proper file headers

.idea/codeStyles/Project.xml

+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <codeStyleSettings language="XML">
+      <option name="FORCE_REARRANGE_MODE" value="1" />
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+      </indentOptions>
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="PREFERRED_PROJECT_CODE_STYLE" value="Default" />
+  </state>
+</component>

.idea/workspace.xml

   </component>
   <component name="ChangeListManager">
     <list default="true" id="41369230-c648-4299-baf3-de5f13bcb18c" name="Changes" comment="">
+      <change afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/SuspendableTextWatcher.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/RBSMainActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/RBSMainActivity.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/BallisticResults.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/BallisticResults.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/FlightCurveChart.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/FlightCurveChart.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/FontTextView.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/FontTextView.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/XTextView.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components/XTextView.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/RBSDatabaseHelper.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/RBSDatabaseHelper.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/ArcherySetupDao.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/ArcherySetupDao.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/DAO.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/DAO.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/RiserDao.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/RiserDao.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/SightDao.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/dao/SightDao.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/data/TblRBSArcherySetup.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/data/TblRBSArcherySetup.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSRiser.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSRiser.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSSight.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSSight.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/CalculationTask.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/CalculationTask.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculation.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculation.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculator.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculator.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/ArcherySetup.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/ArcherySetup.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IArcherySetup.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IArcherySetup.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IEntity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IEntity.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IRiser.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/IRiser.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/ISight.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/ISight.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/Riser.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/Riser.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/Sight.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/model/Sight.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightCollectionAdapter.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightCollectionAdapter.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightFragment.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersFragment.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersViewModel.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersViewModel.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingFragment.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingViewModel.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingViewModel.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryFragment.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/app/src/main/res/layout/fragment_calcsight_trajectory.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/layout/fragment_calcsight_trajectory.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/app/src/main/res/values/colors.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/values/colors.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryViewModel.java" beforeDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationViewModel.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationViewModel.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationViewModel.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationViewModel.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationActivity.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationActivity.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationViewModel.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationViewModel.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/AddEquipmentFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/AddEquipmentFragment.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/ChooseEquipmentFragment.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/ChooseEquipmentFragment.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/EquipmentRecyclerViewAdapter.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/EquipmentRecyclerViewAdapter.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/utilities/PlatformUtils.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/utilities/PlatformUtils.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/utilities/UnitConverter.java" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/utilities/UnitConverter.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/app/src/main/res/values/attr.xml" beforeDir="false" afterPath="$PROJECT_DIR$/app/src/main/res/values/attr.xml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <property name="format.on.save" value="true" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/components" />
     <property name="optimize.imports.on.save" value="true" />
-    <property name="settings.editor.selected.configurable" value="preferences.editor.code.editing" />
+    <property name="settings.editor.selected.configurable" value="preferences.sourceCode.Java" />
   </component>
   <component name="RecentsManager">
     <key name="android.template.-1377507120">
   <component name="XDebuggerManager">
     <breakpoint-manager>
       <breakpoints>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/database/RBSDatabaseHelper.java</url>
-          <line>99</line>
-          <option name="timeStamp" value="4" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java</url>
-          <line>99</line>
-          <option name="timeStamp" value="37" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java</url>
-          <line>173</line>
-          <option name="timeStamp" value="40" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java</url>
-          <line>129</line>
-          <option name="timeStamp" value="42" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationActivity.java</url>
-          <line>74</line>
-          <option name="timeStamp" value="43" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationViewModel.java</url>
-          <line>108</line>
-          <option name="timeStamp" value="46" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java</url>
-          <line>92</line>
-          <option name="timeStamp" value="50" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationViewModel.java</url>
-          <line>115</line>
-          <option name="timeStamp" value="52" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java</url>
-          <line>186</line>
-          <option name="timeStamp" value="53" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java</url>
-          <line>208</line>
-          <option name="timeStamp" value="54" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationActivity.java</url>
-          <line>120</line>
-          <option name="timeStamp" value="55" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java</url>
-          <line>190</line>
-          <option name="timeStamp" value="56" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$USER_HOME$/AppData/Local/Android/Sdk/sources/android-32/android/widget/TextView.java</url>
-          <line>6178</line>
-          <option name="timeStamp" value="68" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryFragment.java</url>
-          <line>68</line>
-          <option name="timeStamp" value="79" />
-        </line-breakpoint>
-        <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
-          <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryFragment.java</url>
-          <line>53</line>
-          <option name="timeStamp" value="90" />
-        </line-breakpoint>
         <line-breakpoint enabled="true" suspend="THREAD" type="java-line">
           <url>file://$PROJECT_DIR$/app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersFragment.java</url>
-          <line>212</line>
-          <option name="timeStamp" value="108" />
+          <line>247</line>
+          <option name="timeStamp" value="110" />
         </line-breakpoint>
       </breakpoints>
     </breakpoint-manager>

app/src/main/java/ch/spherIC/recurvebowsight/RBSMainActivity.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight;
         SplashScreen splashScreen = androidx.core.splashscreen.SplashScreen.installSplashScreen(this);
 
         super.onCreate(savedInstanceState);
-        binding = ActivityMainBinding.inflate(getLayoutInflater());
+        this.binding = ActivityMainBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
         setSupportActionBar(binding.appBarMain.toolbar);
 

app/src/main/java/ch/spherIC/recurvebowsight/components/FlightCurveChart.java

-/**
- * Copyright (C) 2005-2012 XELOG AG
+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.components;
 
 import android.content.Context;
-
 import android.graphics.Color;
 
-import ch.spherIC.recurvebowsight.R;
-import ch.spherIC.recurvebowsight.logic.TrajectoryCalculator;
-
 import org.achartengine.ChartFactory;
 import org.achartengine.GraphicalView;
-
 import org.achartengine.model.XYMultipleSeriesDataset;
 import org.achartengine.model.XYSeries;
-
 import org.achartengine.renderer.XYMultipleSeriesRenderer;
 import org.achartengine.renderer.XYSeriesRenderer;
 
 import java.text.DecimalFormat;
 
+import ch.spherIC.recurvebowsight.R;
+import ch.spherIC.recurvebowsight.logic.TrajectoryCalculator;
+
 
 /**
- * @author  FC Smilari
+ * @author FC Smilari
  */
 public class FlightCurveChart {
 
 
         this.mRenderer = new XYMultipleSeriesRenderer();
         this.mRenderer.addSeriesRenderer(renderer);
-        this.mRenderer.setMargins(new int[] { 60, 80, 60, 60 }); // top, left, bottom, right
+        this.mRenderer.setMargins(new int[]{60, 80, 60, 60}); // top, left, bottom, right
         this.mRenderer.setShowLegend(true);
         this.mRenderer.setAntialiasing(true);
         this.mRenderer.setLabelsColor(Color.BLACK);
     }
 
     /**
-     * @return  the dataSet
+     * @return the dataSet
      */
     public XYMultipleSeriesDataset getDataSet() {
         return this.dataSet;
     }
 
     /**
-     * @return  the mRenderer
+     * @return the mRenderer
      */
     public XYMultipleSeriesRenderer getMultiRenderer() {
         return this.mRenderer;

app/src/main/java/ch/spherIC/recurvebowsight/components/FontTextView.java

-/**
- * Copyright (C) 2012 - Florindo Smilari (spherIC)
+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.components;
 

app/src/main/java/ch/spherIC/recurvebowsight/components/SuspendableTextWatcher.java

+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
+ */
+package ch.spherIC.recurvebowsight.components;
+
+import android.text.Editable;
+import android.text.TextWatcher;
+
+/**
+ * An TextWatcher whose execution of the update methods events can be suspended.
+ */
+public abstract class SuspendableTextWatcher implements TextWatcher {
+
+    private boolean suspended = false;
+
+    /**
+     * Checks if this listener is in suspended mode.
+     *
+     * @return True if <code>suspended</code>, otherwise false
+     */
+    public synchronized boolean isSuspended() {
+        return suspended;
+    }
+
+    /**
+     * Sets this listener to suspended mode, means the value of <code>suspended</code> is set to true.
+     */
+    public synchronized void suspend() {
+        this.suspended = true;
+    }
+
+    /**
+     * Resumes this listener from suspended mode, means the value of <code>suspended</code> is set to false.
+     */
+    public synchronized void resume() {
+        this.suspended = false;
+    }
+
+    @Override
+    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+        if (!isSuspended()) {
+            onBeforeTextChanged(s, start, count, after);
+        }
+    }
+
+    @Override
+    public void onTextChanged(final CharSequence s, final int start, final int before, final int count) {
+        if (!isSuspended()) {
+            onTextHasChanged(s, start, before, count);
+        }
+    }
+
+
+    @Override
+    public void afterTextChanged(final Editable s) {
+        if (!isSuspended()) {
+            onAfterTextChanged(s);
+        }
+    }
+
+    protected abstract void onBeforeTextChanged(CharSequence s, int start, int count, int after);
+
+    protected abstract void onTextHasChanged(final CharSequence s, final int start, final int before, final int count);
+
+    protected abstract void onAfterTextChanged(final Editable s);
+
+}

app/src/main/java/ch/spherIC/recurvebowsight/components/XTextView.java

 /*
- * $URL$
- * $Revision$
- * $LastChangedBy$
- * $LastChangedDate$
- *
- * Copyright (c) 2011 spherIC, Switzerland
- * All rights reserved.
- *
- * This software is the confidential and proprietary information
- * of spherIC. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only
- * in accordance with the terms of the license agreement you
- * entered into with spherIC.
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.components;
 
     /**
      * Creates a new $class.name$ object.
      *
-     * @param context  DOCUMENT ME!
-     * @param attrs    DOCUMENT ME!
+     * @param context DOCUMENT ME!
+     * @param attrs DOCUMENT ME!
      * @param defStyle DOCUMENT ME!
      */
     public XTextView(final Context context, final AttributeSet attrs, final int defStyle) {
      * Creates a new $class.name$ object.
      *
      * @param context DOCUMENT ME!
-     * @param attrs   DOCUMENT ME!
+     * @param attrs DOCUMENT ME!
      */
     public XTextView(final Context context, final AttributeSet attrs) {
         super(context, attrs);
 
         if (this.drawborder) {
             setPadding(getPaddingLeft() + this.drawborderWidth, getPaddingTop() + this.drawborderWidth, getPaddingRight() + this.drawborderWidth,
-                    getPaddingBottom() + this.drawborderWidth);
+                       getPaddingBottom() + this.drawborderWidth);
         }
         a.recycle();
     }

app/src/main/java/ch/spherIC/recurvebowsight/database/RBSDatabaseHelper.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database;

app/src/main/java/ch/spherIC/recurvebowsight/database/dao/ArcherySetupDao.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.dao;
         IRiser riser = RiserDao.getInstance().loadById(cursor.getLong(3));
 
         IArcherySetup archerySetup = new ArcherySetup(cursor.getLong(0), cursor.getString(1), sight, riser, cursor.getDouble(4), //
-                cursor.getDouble(5), cursor.getDouble(6), cursor.getDouble(7), cursor.getDouble(8),
-                cursor.getDouble(9), cursor.getDouble(10), cursor.getDouble(11), cursor.getDouble(12),
-                cursor.getDouble(13), cursor.getDouble(14), cursor.getDouble(15), cursor.getDouble(16),
-                cursor.getDouble(17));
+                                                      cursor.getDouble(5), cursor.getDouble(6), cursor.getDouble(7), cursor.getDouble(8),
+                                                      cursor.getDouble(9), cursor.getDouble(10), cursor.getDouble(11), cursor.getDouble(12),
+                                                      cursor.getDouble(13), cursor.getDouble(14), cursor.getDouble(15), cursor.getDouble(16),
+                                                      cursor.getDouble(17));
         return archerySetup;
     }
 

app/src/main/java/ch/spherIC/recurvebowsight/database/dao/DAO.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.dao;

app/src/main/java/ch/spherIC/recurvebowsight/database/dao/RiserDao.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.dao;
     @Override
     protected IRiser cursorToEntity(final Cursor cursor) {
         return new Riser(cursor.getLong(0), cursor.getString(1), cursor.getString(2), cursor.getDouble(3), cursor.getDouble(4),
-                cursor.getDouble(5));
+                         cursor.getDouble(5));
     }
 
     @Override

app/src/main/java/ch/spherIC/recurvebowsight/database/dao/SightDao.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.dao;
     protected ISight cursorToEntity(final Cursor cursor) {
 
         ISight sight = new Sight(cursor.getLong(0), cursor.getString(1), cursor.getString(2), cursor.getDouble(3), //
-                cursor.getDouble(4), cursor.getString(5), cursor.getDouble(6), cursor.getDouble(7), //
-                cursor.getDouble(8));
+                                 cursor.getDouble(4), cursor.getString(5), cursor.getDouble(6), cursor.getDouble(7), //
+                                 cursor.getDouble(8));
         return sight;
     }
 

app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/data/TblRBSArcherySetup.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.scheme.data;

app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSRiser.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.scheme.masterdata;

app/src/main/java/ch/spherIC/recurvebowsight/database/scheme/masterdata/TblRBSSight.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.database.scheme.masterdata;

app/src/main/java/ch/spherIC/recurvebowsight/logic/CalculationTask.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.logic;
     protected void onProgressUpdate(final Integer... values) {
         super.onProgressUpdate(values);
         this.calculator.getListener().updateTrajectoryTxtFld(values[0], this.calculator.getFlightCurve()[values[1]], this.calculator.getStartAngle(),
-                this.calculator.getMaxHCurve());
+                                                             this.calculator.getMaxHCurve());
     }
 
     @Override

app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculation.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.logic;

app/src/main/java/ch/spherIC/recurvebowsight/logic/TrajectoryCalculator.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.logic;

app/src/main/java/ch/spherIC/recurvebowsight/model/ArcherySetup.java

-/**
- * Copyright (C) 2022 F. Smilari
+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;
 
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
         ArcherySetup that = (ArcherySetup) o;
         return id == that.id && name.equals(that.name);
     }

app/src/main/java/ch/spherIC/recurvebowsight/model/IArcherySetup.java

-/**
- * Copyright (C) 2022 F. Smilari
+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;
 

app/src/main/java/ch/spherIC/recurvebowsight/model/IEntity.java

-/**
- * Copyright (C) 2022 F. Smilari
+/*
+ * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;
 

app/src/main/java/ch/spherIC/recurvebowsight/model/IRiser.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;

app/src/main/java/ch/spherIC/recurvebowsight/model/ISight.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;

app/src/main/java/ch/spherIC/recurvebowsight/model/Riser.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
         Riser riser = (Riser) o;
         return id == riser.id && manufacturer.equals(riser.manufacturer) && model.equals(riser.model);
     }

app/src/main/java/ch/spherIC/recurvebowsight/model/Sight.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.model;
 
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
         Sight sight = (Sight) o;
         return id == sight.id && manufacturer.equals(sight.manufacturer) && model.equals(sight.model);
     }

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightCollectionAdapter.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;
 import android.app.ProgressDialog;
 import android.content.Context;
 import android.os.Bundle;
+import android.text.Editable;
 import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 import ch.spherIC.recurvebowsight.R;
+import ch.spherIC.recurvebowsight.components.SuspendableTextWatcher;
 import ch.spherIC.recurvebowsight.databinding.FragmentCalcsightParametersBinding;
 import ch.spherIC.recurvebowsight.logic.BallisticResults;
 import ch.spherIC.recurvebowsight.logic.CalculationTask;
 
 public class CalculateSightParametersFragment extends Fragment implements TrajectoryCalculation {
 
+    public static final DecimalFormat DF = new DecimalFormat("0.##");
+    public static final DecimalFormat DF_1 = new DecimalFormat("0.00");
+    public static final DecimalFormat DF_2 = new DecimalFormat("0.0##");
+    public static final DecimalFormat DF_EVS = new DecimalFormat("0.#");
     private static final double CENTI = 0.01;
     private static final double MILLI = 0.001;
-
+    private static final int MAX_TRAJ_POINTS = 200;
     private FragmentCalcsightParametersBinding binding;
     private CalculateSightParametersViewModel calculateSightViewModel;
     private ProgressDialog progressDialog;
+    private SuspendableTextWatcher accuracyOptimizingTextWatcher;
 
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
         this.calculateSightViewModel = new ViewModelProvider(this).get(CalculateSightParametersViewModel.class);
         this.binding.fabCalculate.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
+                accuracyOptimizingTextWatcher.suspend();
                 updateModelFromUI();
+                accuracyOptimizingTextWatcher.resume();
                 calculate();
             }
         });
 
         loadCalculationAccuracies(root);
         loadCalculationTimeIntervals(root);
+        addValueChangeListeners();
         addObservers();
 
         return root;
         binding = null;
     }
 
+    @Override
+    public void updateTrajectoryTxtFld(Integer step, Double[] flightCurveRow, Double startAngle, Double[] maxHCurve) {
+    }
+
+    @Override
+    public void onCalculationDone(BallisticResults ballisticResults) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable("ballisticResults", ballisticResults);
+        getParentFragmentManager().setFragmentResult("ballisticResults", bundle);
+
+        if (this.progressDialog != null) {
+            this.progressDialog.dismiss();
+        }
+
+        ((CalculateSightFragment) getParentFragment()).scrollToTab(1);
+    }
+
     private void addObservers() {
-        DecimalFormat dF = new DecimalFormat("#.#");
-        DecimalFormat dF2 = new DecimalFormat("#.##");
-        DecimalFormat dF3 = new DecimalFormat("#.###");
-        this.calculateSightViewModel.getArrowDiameter().observe(getViewLifecycleOwner(), arrowDiameter -> this.binding.arrowDiameterTxt.setText(arrowDiameter != null ? dF.format(arrowDiameter) : ""));
-        this.calculateSightViewModel.getArrowCw().observe(getViewLifecycleOwner(), arrowCw -> this.binding.arrowCwTxt.setText(arrowCw != null ? dF.format(arrowCw) : ""));
-        this.calculateSightViewModel.getArrowWeight().observe(getViewLifecycleOwner(), arrowWeight -> this.binding.arrowWeightTxt.setText(arrowWeight != null ? dF.format(arrowWeight) : ""));
-        this.calculateSightViewModel.getBowPullout().observe(getViewLifecycleOwner(), bowPullout -> this.binding.bowPulloutTxt.setText(bowPullout != null ? dF.format(bowPullout) : ""));
-        this.calculateSightViewModel.getArrowV0().observe(getViewLifecycleOwner(), arrowV0 -> this.binding.arrowV0Txt.setText(arrowV0 != null ? dF.format(arrowV0) : ""));
-        this.calculateSightViewModel.getHNA().observe(getViewLifecycleOwner(), hNA -> this.binding.hNATxt.setText(hNA != null ? dF.format(hNA) : ""));
-        this.calculateSightViewModel.getNockRaising().observe(getViewLifecycleOwner(), nockRaising -> this.binding.nockRaisingTxt.setText(nockRaising != null ? dF.format(nockRaising) : ""));
-        this.calculateSightViewModel.getBraceHeight().observe(getViewLifecycleOwner(), braceHeight -> this.binding.braceHeightTxt.setText(braceHeight != null ? dF.format(braceHeight) : ""));
-        this.calculateSightViewModel.getAirTemperature().observe(getViewLifecycleOwner(), airTemp -> this.binding.airTemperatureTxt.setText(airTemp != null ? dF.format(airTemp) : ""));
-        this.calculateSightViewModel.getRelativeAirHumidity().observe(getViewLifecycleOwner(), relAirHumidity -> this.binding.airRelativeHumidityTxt.setText(relAirHumidity != null ? dF.format(relAirHumidity) : ""));
-        this.calculateSightViewModel.getShootingDistance().observe(getViewLifecycleOwner(), shootingDistance -> this.binding.shootingDistanzTxt.setText(shootingDistance != null ? dF.format(shootingDistance) : ""));
-        this.calculateSightViewModel.getArrowNockHeight().observe(getViewLifecycleOwner(), arrowNockHeight -> this.binding.arrowNockHeightTxt.setText(arrowNockHeight != null ? dF2.format(arrowNockHeight) : ""));
-        this.calculateSightViewModel.getTargetCenterHeight().observe(getViewLifecycleOwner(), targetCenterHeight -> this.binding.targetCenterHeightTxt.setText(targetCenterHeight != null ? dF2.format(targetCenterHeight) : ""));
-        this.calculateSightViewModel.getDeltaTime().observe(getViewLifecycleOwner(), deltaTime -> this.binding.deltaTimeTxt.setText(deltaTime != null ? dF3.format(deltaTime) : ""));
-        this.calculateSightViewModel.getCalcPrecision().observe(getViewLifecycleOwner(), calcPrecision -> this.binding.calcPrecisionTxt.setText(calcPrecision != null ? dF.format(calcPrecision) : ""));
+        this.calculateSightViewModel.getArrowDiameter().observe(getViewLifecycleOwner(), arrowDiameter -> this.binding.arrowDiameterTxt.setText(arrowDiameter != null ? DF.format(arrowDiameter) : ""));
+        this.calculateSightViewModel.getArrowCw().observe(getViewLifecycleOwner(), arrowCw -> this.binding.arrowCwTxt.setText(arrowCw != null ? DF.format(arrowCw) : ""));
+        this.calculateSightViewModel.getArrowWeight().observe(getViewLifecycleOwner(), arrowWeight -> this.binding.arrowWeightTxt.setText(arrowWeight != null ? DF.format(arrowWeight) : ""));
+        this.calculateSightViewModel.getBowPullout().observe(getViewLifecycleOwner(), bowPullout -> this.binding.bowPulloutTxt.setText(bowPullout != null ? DF.format(bowPullout) : ""));
+        this.calculateSightViewModel.getArrowV0().observe(getViewLifecycleOwner(), arrowV0 -> this.binding.arrowV0Txt.setText(arrowV0 != null ? DF.format(arrowV0) : ""));
+        this.calculateSightViewModel.getHNA().observe(getViewLifecycleOwner(), hNA -> this.binding.hNATxt.setText(hNA != null ? DF.format(hNA) : ""));
+        this.calculateSightViewModel.getNockRaising().observe(getViewLifecycleOwner(), nockRaising -> this.binding.nockRaisingTxt.setText(nockRaising != null ? DF.format(nockRaising) : ""));
+        this.calculateSightViewModel.getBraceHeight().observe(getViewLifecycleOwner(), braceHeight -> this.binding.braceHeightTxt.setText(braceHeight != null ? DF.format(braceHeight) : ""));
+        this.calculateSightViewModel.getAirTemperature().observe(getViewLifecycleOwner(), airTemp -> this.binding.airTemperatureTxt.setText(airTemp != null ? DF.format(airTemp) : ""));
+        this.calculateSightViewModel.getRelativeAirHumidity().observe(getViewLifecycleOwner(), relAirHumidity -> this.binding.airRelativeHumidityTxt.setText(relAirHumidity != null ? DF.format(relAirHumidity) : ""));
+        this.calculateSightViewModel.getShootingDistance().observe(getViewLifecycleOwner(), shootingDistance -> this.binding.shootingDistanzTxt.setText(shootingDistance != null ? DF.format(shootingDistance) : ""));
+        this.calculateSightViewModel.getArrowNockHeight().observe(getViewLifecycleOwner(), arrowNockHeight -> this.binding.arrowNockHeightTxt.setText(arrowNockHeight != null ? DF_1.format(arrowNockHeight) : ""));
+        this.calculateSightViewModel.getTargetCenterHeight().observe(getViewLifecycleOwner(), targetCenterHeight -> this.binding.targetCenterHeightTxt.setText(targetCenterHeight != null ? DF_1.format(targetCenterHeight) : ""));
+        this.calculateSightViewModel.getDeltaTime().observe(getViewLifecycleOwner(), deltaTime -> this.binding.deltaTimeTxt.setText(deltaTime != null ? DF_2.format(deltaTime) : ""));
+        this.calculateSightViewModel.getCalcPrecision().observe(getViewLifecycleOwner(), calcPrecision -> this.binding.calcPrecisionTxt.setText(calcPrecision != null ? DF.format(calcPrecision) : ""));
     }
 
     private void updateModelFromUI() {
             InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
             imm.hideSoftInputFromWindow(this.binding.getRoot().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
 
-            this.progressDialog = ProgressDialog.show(binding.getRoot().getContext(), null, getResources().getString(R.string.caption_Calculating), true, false);
+            this.progressDialog = ProgressDialog.show(binding.getRoot().getContext(), null, getResources().getString(R.string.caption_Calculating),
+                                                      true, false);
 
             CalculationTask calcTask = new CalculationTask();
-            TrajectoryCalculator calculator = new TrajectoryCalculator(
-                    Double.valueOf(this.binding.arrowDiameterTxt.getText().toString().trim()) * MILLI,
-                    Double.valueOf(this.binding.arrowCwTxt.getText().toString().trim()),
-                    Double.valueOf(this.binding.arrowWeightTxt.getText().toString().trim()) * MILLI,
-                    Double.valueOf(this.binding.arrowV0Txt.getText().toString().trim()),
-                    Double.valueOf(this.binding.shootingDistanzTxt.getText().toString().trim()),
-                    Double.valueOf(this.binding.targetCenterHeightTxt.getText().toString().trim())
-                            - Double.valueOf(this.binding.arrowNockHeightTxt.getText().toString().trim()),
-                    Double.valueOf(this.binding.airTemperatureTxt.getText().toString().trim()),
-                    Double.valueOf(this.binding.airRelativeHumidityTxt.getText().toString().trim()) * CENTI,
-                    Double.valueOf(this.binding.deltaTimeTxt.getText().toString().trim()),
-                    Double.valueOf(this.binding.calcPrecisionTxt.getText().toString().trim()) * CENTI,
-                    this);
+            TrajectoryCalculator calculator = new TrajectoryCalculator(Double.valueOf(this.binding.arrowDiameterTxt.getText().toString().trim()) * MILLI,
+                                                                       Double.valueOf(this.binding.arrowCwTxt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.arrowWeightTxt.getText().toString().trim()) * MILLI,
+                                                                       Double.valueOf(this.binding.arrowV0Txt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.shootingDistanzTxt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.targetCenterHeightTxt.getText().toString().trim())
+                                                                               - Double.valueOf(this.binding.arrowNockHeightTxt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.airTemperatureTxt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.airRelativeHumidityTxt.getText().toString().trim()) * CENTI,
+                                                                       Double.valueOf(this.binding.deltaTimeTxt.getText().toString().trim()),
+                                                                       Double.valueOf(this.binding.calcPrecisionTxt.getText().toString().trim()) * CENTI,
+                                                                       this);
             calculator.setStartAngle(0d);
             calcTask.execute(calculator);
 
         return true;
     }
 
-    @Override
-    public void updateTrajectoryTxtFld(Integer step, Double[] flightCurveRow, Double startAngle, Double[] maxHCurve) {
+
+    private void addValueChangeListeners() {
+        this.accuracyOptimizingTextWatcher = new SuspendableTextWatcher() {
+            @Override
+            protected void onBeforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            protected void onTextHasChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            protected void onAfterTextChanged(Editable s) {
+                if (!binding.arrowV0Txt.getText().toString().isEmpty() && !binding.shootingDistanzTxt.getText().toString().isEmpty()) {
+                    calculateAndSetPerformantAccuracy(Double.valueOf(binding.arrowV0Txt.getText().toString()),
+                                                      Double.valueOf(binding.shootingDistanzTxt.getText().toString()));
+                }
+            }
+        };
+
+        this.binding.arrowV0Txt.addTextChangedListener(this.accuracyOptimizingTextWatcher);
+        this.binding.shootingDistanzTxt.addTextChangedListener(this.accuracyOptimizingTextWatcher);
     }
 
-    @Override
-    public void onCalculationDone(BallisticResults ballisticResults) {
-        Bundle bundle = new Bundle();
-        bundle.putParcelable("ballisticResults", ballisticResults);
-        getParentFragmentManager().setFragmentResult("ballisticResults", bundle);
+    private void calculateAndSetPerformantAccuracy(final Double v0, final Double shootingDistance) {
+        String[] calcAccuracies = getResources().getStringArray(R.array.CalculationTimeIntervals);
+        String calcAccuracyToSet = calcAccuracies[calcAccuracies.length - 1];
+        Double approxFlightTime = shootingDistance / v0;
+        Double approxIntervalTime = approxFlightTime / MAX_TRAJ_POINTS;
 
-        if (this.progressDialog != null) {
-            this.progressDialog.dismiss();
+        for (int i = 0; i < calcAccuracies.length - 1; i++) {
+            Double accLow = Double.valueOf(calcAccuracies[i]);
+            Double accHigh = Double.valueOf(calcAccuracies[i + 1]);
+            if (accHigh < approxIntervalTime && approxIntervalTime <= accLow) {
+                calcAccuracyToSet = calcAccuracies[i];
+                break;
+            }
         }
 
-        ((CalculateSightFragment) getParentFragment()).scrollToTab(1);
+        this.binding.deltaTimeTxt.setText(calcAccuracyToSet);
     }
 }

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightParametersViewModel.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightSightSettingViewModel.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.calcsight;
 import org.achartengine.model.XYSeries;
 
 import java.text.DecimalFormat;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.stream.Collectors;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentResultListener;
-import androidx.lifecycle.ViewModelProvider;
 import ch.spherIC.recurvebowsight.R;
 import ch.spherIC.recurvebowsight.components.FlightCurveChart;
 import ch.spherIC.recurvebowsight.components.XTextView;
 
 public class CalculateSightTrajectoryFragment extends Fragment {
 
-    public static final DecimalFormat DF = new DecimalFormat("0.##");
     public static final DecimalFormat DF_FC = new DecimalFormat("0.000");
-    public static final DecimalFormat DF_1 = new DecimalFormat("0.00");
-    public static final DecimalFormat DF_EVS = new DecimalFormat("0.#");
 
     private FragmentCalcsightTrajectoryBinding binding;
     private FlightCurveChart flightCurveChart;
     }
 
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        CalculateSightTrajectoryViewModel calculateSightTrajectoryViewModel = new ViewModelProvider(this).get(CalculateSightTrajectoryViewModel.class);
-        binding = FragmentCalcsightTrajectoryBinding.inflate(inflater, container, false);
-        View root = binding.getRoot();
+        this.binding = FragmentCalcsightTrajectoryBinding.inflate(inflater, container, false);
+        View root = this.binding.getRoot();
         this.flightCurveTxtFld = (XTextView) root.findViewById(R.id.flightCurveTxtFld);
 
         GraphicalView flightCurveChartView;
         layout = (LinearLayout) root.findViewById(R.id.ballisticResults);
         layout.addView(flightCurveChartView, 0, new LinearLayout.LayoutParams(ViewGroup.MarginLayoutParams.MATCH_PARENT, 0, 1f));
 
-        getParentFragmentManager().setFragmentResultListener("ballisticResults", this, new FragmentResultListener() {
-            @Override
-            public void onFragmentResult(@NonNull String requestKey, @NonNull Bundle bundle) {
+        getParentFragmentManager().setFragmentResultListener("ballisticResults", this, (requestKey, bundle) -> {
+            if (requestKey.equals("ballisticResults")) {
                 BallisticResults ballisticResults = bundle.getParcelable("ballisticResults");
                 updateFlightCurveChart(ballisticResults.getFlightCurve());
                 updateTrajectoryTxtFld(ballisticResults);
         binding = null;
     }
 
-    private Double[] convert(double[] values) {
-        return Arrays.stream(values).boxed().collect(Collectors.toCollection(ArrayList::new)).toArray(new Double[]{});
-    }
-
     /**
      * Updates the graph.
      *
 
         XYSeries series = new XYSeries(this.binding.getRoot().getResources().getString(R.string.fcChart_TitleLable));
 
-        for (int i = 0; i < flightCurve.length; i++) {
-            series.add(flightCurve[i][TrajectoryCalculator.IDX_X], flightCurve[i][TrajectoryCalculator.IDX_Y]);
+        for (Double[] doubles : flightCurve) {
+            series.add(doubles[TrajectoryCalculator.IDX_X], doubles[TrajectoryCalculator.IDX_Y]);
         }
 
         this.flightCurveChart.getDataSet().removeSeries(0);
     private void updateTrajectoryTxtFld(BallisticResults ballisticResults) {
         updateTrajectoryTxtFld(0, ballisticResults.getFlightCurve()[0], ballisticResults.getStartAngle(), ballisticResults.getMaxHCurve(), ballisticResults.getFlightDuration());
         Double[][] flightCurve = ballisticResults.getFlightCurve();
-        for (int i = 0; i < flightCurve.length; i++) {
-            updateTrajectoryTxtFld(1, flightCurve[i], null, null, null);
+        for (Double[] doubles : flightCurve) {
+            updateTrajectoryTxtFld(1, doubles, null, null, null);
         }
     }
 
      * Updates the text table field.
      *
      * @param flightCurveRow values to text one flight curve row
-     * @param startAngle     the start angle to display
-     * @param maxHCurve      max values of the flight curve
+     * @param startAngle the start angle to display
+     * @param maxHCurve max values of the flight curve
      */
     private void updateTrajectoryTxtFld(final Integer step, final Double[] flightCurveRow, final Double startAngle, final Double[] maxHCurve, final Double flightDuration) {
         int width = getParentFragment().getView().findViewById(R.id.fragment_calcsight_parameters).getMeasuredWidth() - UnitConverter.dpToPxH(2 * 8);
-        Double[] r1 = flightCurveRow;
 
         switch (step) {
             case 0:
                 this.flightCurveTxtFld.setText("");
                 this.flightCurveTxtFld.append(getResources().getString(R.string.fcChart_StartAngle) + DF_FC.format(startAngle) + " °\n\n");
                 this.flightCurveTxtFld.append(getResources().getString(R.string.fcChart_MaxHeight) + DF_FC.format(maxHCurve[0])
-                        + " m / "
-                        + DF_FC.format(maxHCurve[0] + Double.valueOf(arrowNockHeightTxtFld.getText().toString().trim()))
-                        + " m,  [t = " + DF_FC.format(maxHCurve[1]) + " s]\n\n");
+                                                      + " m / "
+                                                      + DF_FC.format(maxHCurve[0] + Double.parseDouble(arrowNockHeightTxtFld.getText().toString().trim()))
+                                                      + " m,  [t = " + DF_FC.format(maxHCurve[1]) + " s]\n\n");
                 this.flightCurveTxtFld.append(getResources().getString(R.string.fcChart_FlightDuration)
-                        + DF_FC.format(flightDuration)
-                        + " sec\n\n");
+                                                      + DF_FC.format(flightDuration)
+                                                      + " sec\n\n");
 
 
                 SpannableString line = new SpannableString("t [sec]\tVx [m/s]\tVy [m/s]\tx [m]\ty [m]\n\n");
                 break;
 
             case 1:
-                line = new SpannableString(DF_FC.format(r1[TrajectoryCalculator.IDX_T]) + '\t'
-                        + DF_FC.format(r1[TrajectoryCalculator.IDX_VX]) + '\t'
-                        + DF_FC.format(r1[TrajectoryCalculator.IDX_VY]) + '\t'
-                        + DF_FC.format(r1[TrajectoryCalculator.IDX_X]) + '\t'
-                        + DF_FC.format(r1[TrajectoryCalculator.IDX_Y]) + "\n");
+                line = new SpannableString(DF_FC.format(flightCurveRow[TrajectoryCalculator.IDX_T]) + '\t'
+                                                   + DF_FC.format(flightCurveRow[TrajectoryCalculator.IDX_VX]) + '\t'
+                                                   + DF_FC.format(flightCurveRow[TrajectoryCalculator.IDX_VY]) + '\t'
+                                                   + DF_FC.format(flightCurveRow[TrajectoryCalculator.IDX_X]) + '\t'
+                                                   + DF_FC.format(flightCurveRow[TrajectoryCalculator.IDX_Y]) + "\n");
                 line.setSpan(new TabStopSpan.Standard(width / 5), 0, line.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                 line.setSpan(new TabStopSpan.Standard(width / 5 * 2), 0, line.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                 line.setSpan(new TabStopSpan.Standard(width / 5 * 3), 0, line.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

app/src/main/java/ch/spherIC/recurvebowsight/ui/calcsight/CalculateSightTrajectoryViewModel.java

-/**
- * Copyright (C) 2022 - Florindo Smilari (spherIC)
- */
-package ch.spherIC.recurvebowsight.ui.calcsight;
-
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;
-import androidx.lifecycle.ViewModel;
-
-public class CalculateSightTrajectoryViewModel extends ViewModel {
-
-    private final MutableLiveData<String> mText;
-
-    public CalculateSightTrajectoryViewModel() {
-        mText = new MutableLiveData<>();
-        mText.setValue("This is the \"Calculate Sight Trajectory\" fragment");
-    }
-
-    public LiveData<String> getText() {
-        return mText;
-    }
-}

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationActivity.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;
 
     private void addNewArcherySetup() {
         IArcherySetup newArcherySetup = new ArcherySetup(0, "", null, null, null, null,
-                null, null, null, null, null, null, null,
-                null, null, null, null, null);
+                                                         null, null, null, null, null, null, null,
+                                                         null, null, null, null, null);
         this.archerySetupConfigurationViewModel.setArcherySetup(newArcherySetup);
         String strMandatory = getString(R.string.caption_mandatory);
         this.binding.asArcherySetupSelectionTxt.setText(null, false);

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/ArcherySetupConfigurationViewModel.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationActivity.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/RiserConfigurationViewModel.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationActivity.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;

app/src/main/java/ch/spherIC/recurvebowsight/ui/configuration/SightConfigurationViewModel.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.configuration;

app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/AddEquipmentFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.equipment;

app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/ChooseEquipmentFragment.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.equipment;

app/src/main/java/ch/spherIC/recurvebowsight/ui/equipment/EquipmentRecyclerViewAdapter.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.ui.equipment;
             @Override
             public void onClick(View v) {
                 Toast.makeText(EquipmentRecyclerViewAdapter.this.context,
-                        context.getString(R.string.caption_setup_choosen) + holder.archerySetup,
-                        Toast.LENGTH_SHORT).show();
+                               context.getString(R.string.caption_setup_choosen) + holder.archerySetup,
+                               Toast.LENGTH_SHORT).show();
 
                 Bundle bundle = new Bundle();
                 bundle.putParcelable("setup", holder.archerySetup);

app/src/main/java/ch/spherIC/recurvebowsight/utilities/PlatformUtils.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.utilities;

app/src/main/java/ch/spherIC/recurvebowsight/utilities/UnitConverter.java

-/**
+/*
  * Copyright (C) 2022 - Florindo Smilari (spherIC)
  */
 package ch.spherIC.recurvebowsight.utilities;

app/src/main/res/values/attr.xml

         <attr name="drawBorderColor" format="color" />
     </declare-styleable>
 
-    <declare-styleable name="FontTextView">
-        <!-- <attr name="font" format="string" />-->
-    </declare-styleable>
-
 </resources>