GUI Layouting

res/layout/rbs_main.xml

         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_below="@id/views"
-        android:scrollbarAlwaysDrawVerticalTrack="false" >
-
-        <ScrollView
+        android:scrollbarAlwaysDrawVerticalTrack="false" ><ScrollView
             android:id="@+id/paramsScrollView"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_height="match_parent"
             android:orientation="vertical" >
 
-            <ch.spherIC.recurvebowsight.components.XTextView
-                android:id="@+id/flightCurveTxtFld"
+            <ScrollView
+                android:id="@+id/flightCurveScrollVIew"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
                 android:layout_margin="8dp"
-                android:background="@color/white"
-                android:ems="10"
-                android:inputType="textMultiLine"
-                android:padding="4dp"
-                android:textSize="14sp"
-                app:drawBorder="true"
-                app:drawBorderColor="@color/semi_translucent_black"
-                app:drawBorderWidth="2dp" />
+                android:scrollbars="vertical" >
+
+                <ch.spherIC.recurvebowsight.components.XTextView
+                    android:id="@+id/flightCurveTxtFld"
+                    android:layout_width="match_parent"
+                    android:layout_height="match_parent"
+                    android:background="@color/white"
+                    android:ems="10"
+                    android:inputType="textMultiLine"
+                    android:padding="4dp"
+                    android:textSize="14sp"
+                    app:drawBorder="true"
+                    app:drawBorderColor="@color/semi_translucent_black"
+                    app:drawBorderWidth="2dp" />
+            </ScrollView>
         </LinearLayout>
 
         <ScrollView

src/ch/spherIC/recurvebowsight/RBSMainActivity.java

 import android.os.Bundle;
 import android.os.Handler;
 
+import android.text.SpannableString;
+
+import android.text.style.TabStopSpan;
+
 import android.view.Gravity;
 import android.view.Menu;
 import android.view.MenuItem;
     private static final int MIN_DISTANCE = 50;
     private static final double CENTI = 0.01;
     private static final double MILLI = 0.001;
+    private static final String TAB = "\u0009";
 
     private ViewFlipper viewFlipper;
     private ScrollView paramsScrollView;
             this.scSightSpinner.setSelectedSight(archerySetup.getSight());
             this.scSightSpinner.fireSelectionChangedEvent();
             this.scVertScaleMiddleTxtFld.setText(DF.format(archerySetup.getSightVertSkalaMiddle()));
+
+            this.airTemperatureTxtFld.setText("25");
+            this.airRelativeHumidityTxtFld.setText("50");
+            this.shootingDistanzTxtFld.setText("18");
+
         } else {
             this.arrowDiameterTxtFld.setText("");
             this.arrowDiameterTxtFld.setText("");
         if (allParamFieldsValid()) {
 
             InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
-            imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
+            if (getCurrentFocus() != null) {
+                imm.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
+            }
 
             CalculationTask calcTask = new CalculationTask();
             TrajectoryCalculator calculator = new TrajectoryCalculator(Double.valueOf(this.arrowDiameterTxtFld.getText().toString().trim()) * MILLI, //
                                                                        Double.valueOf(this.arrowWeightTxtFld.getText().toString().trim()) * MILLI, //
                                                                        Double.valueOf(this.arrowV0TxtFld.getText().toString().trim()), //
                                                                        Double.valueOf(this.shootingDistanzTxtFld.getText().toString().trim()), //
-                                                                       Double.valueOf(this.arrowNockHeightTxtFld.getText().toString().trim())
-                                                                       - Double.valueOf(this.targetCenterHeightTxtFld.getText().toString().trim()), //
+                                                                       Double.valueOf(this.targetCenterHeightTxtFld.getText().toString().trim())
+                                                                       - Double.valueOf(this.arrowNockHeightTxtFld.getText().toString().trim()), //
                                                                        Double.valueOf(this.airTemperatureTxtFld.getText().toString().trim()), //
                                                                        Double.valueOf(this.airRelativeHumidityTxtFld.getText().toString().trim())
                                                                        * CENTI,                      //
         this.startAngle = startAngle;
 
         this.flightCurveTxtFld.setText("");
-        this.flightCurveTxtFld.append("Abschusswinkel:\t" + DF_FC.format(startAngle) + " °\n");
-        this.flightCurveTxtFld.append("Max. Höhe der Flugbahn:\t" + DF_FC.format(maxHCurve[0])
+        this.flightCurveTxtFld.append("Abschusswinkel:" + TAB + DF_FC.format(startAngle) + " °\n");
+        this.flightCurveTxtFld.append("Max. Höhe der Flugbahn:" + TAB + DF_FC.format(maxHCurve[0])
                                       + " m / " + DF_FC.format(maxHCurve[0] + Double.valueOf(this.arrowNockHeightTxtFld.getText().toString().trim()))
-                                      + " m,  [t = " + DF_FC.format(maxHCurve[1]) + " sec]\n");
-        this.flightCurveTxtFld.append("Flugzeit:\t\t"
+                                      + " m,  [t = " + DF_FC.format(maxHCurve[1]) + " s]\n");
+        this.flightCurveTxtFld.append("Flugzeit:" + TAB + TAB
                                       + DF_FC.format(flightCurve[flightCurve.length - 1][TrajectoryCalculator.IDX_T])
                                       + " sec\n\n");
-        this.flightCurveTxtFld.append("t [sec]\tVx [m/s]\tVy [m/s]\tx [m]\ty [m]\n\n");
-
-        for (int i = 0; i < flightCurve.length; i++) {
-            Double[] r1 = flightCurve[i];
-            StringBuffer line = new StringBuffer();
-            line.append(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");
-            this.flightCurveTxtFld.append(line.toString());
-        }
+
+        SpannableString line = new SpannableString("t [sec]\tVx [m/s]\tVy [m/s]\tx [m]\ty [m]\n\n");
+        line.setSpan(new TabStopSpan.Standard(100), 7, 9, 0);
+        line.setSpan(new TabStopSpan.Standard(200), 17, 19, 0);
+        line.setSpan(new TabStopSpan.Standard(300), 27, 29, 0);
+        line.setSpan(new TabStopSpan.Standard(400), 34, 36, 0);
+        this.flightCurveTxtFld.append(line);
+
+
+//        this.flightCurveTxtFld.append("t [sec]" + TAB + TAB + "Vx [m/s]" + TAB + TAB + "Vy [m/s]" + TAB + TAB + "x [m]" + TAB + TAB + "y [m]\n\n");
+//
+//        for (int i = 0; i < flightCurve.length; i++) {
+//            Double[] r1 = flightCurve[i];
+//            StringBuffer line = new StringBuffer();
+//            line.append(DF_FC.format(r1[TrajectoryCalculator.IDX_T]) + TAB + TAB
+//                        + DF_FC.format(r1[TrajectoryCalculator.IDX_VX]) + TAB + TAB + TAB
+//                        + DF_FC.format(r1[TrajectoryCalculator.IDX_VY]) + TAB + TAB + TAB + TAB
+//                        + DF_FC.format(r1[TrajectoryCalculator.IDX_X]) + TAB + TAB
+//                        + DF_FC.format(r1[TrajectoryCalculator.IDX_Y]) + "\n");
+//            this.flightCurveTxtFld.append(line.toString());
+//        }
 
         calculateSettings();
 
             Double a = Double.valueOf(this.bowPulloutTxtFld.getText().toString()) * 10;
             Double heVs = this.scHeVSSpinner.getVisibility() == View.VISIBLE ? Double.valueOf(this.scHeVSSpinner.getSelectedItem().toString()) : Double.valueOf(this.scHeVSTxtFld.getText().toString());
             Double lhNA = this.selectedArcherySetup.getHNA() * 10;
-            Double dltH = (Double.valueOf(this.arrowNockHeightTxtFld.getText().toString())
-                           - Double.valueOf(this.targetCenterHeightTxtFld.getText().toString())) * Math.pow(10, 3);
+            Double dltH = (Double.valueOf(this.targetCenterHeightTxtFld.getText().toString())
+                           - Double.valueOf(this.arrowNockHeightTxtFld.getText().toString())) * Math.pow(10, 3);
             Double ldistH = Double.valueOf(this.shootingDistanzTxtFld.getText().toString()) * Math.pow(10, 3);
             Double minSkala = this.scVertScaleRngTxtFld.getText().toString().contains("-") ? Double.valueOf(this.scVertScaleRngTxtFld.getText().toString().substring(0,
                                                                                                                                                                      this.scVertScaleRngTxtFld.getText().toString().indexOf('-'))) : 0d;