WebSVN - ES - Diff - Rev 6 and 7 - /trunk/src/ch/ffhs/converter/app/LengthsActivity.java

 package ch.ffhs.converter.app;
 import java.util.HashMap;
 import android.app.Activity;
 import android.os.Bundle;
 import android.text.Editable;
 import android.view.KeyEvent;
 import android.view.View;
 import android.view.View.OnKeyListener;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemSelectedListener;
 import android.widget.EditText;
 import android.widget.Spinner;
 import ch.ffhs.converter.R;
 /**
  * Activity that implements length conversion
+ *
  * @author pelinux
  */
 public class LengthsActivity extends Activity
+{
   /*
    * Constants for mapping value strings to internal IDs
    */
   private static final String VALUE_INCHES = "inch"; //$NON-NLS-1$
+  private static final String VALUE_KILOMETERS = "km"; //$NON-NLS-1$
   private static final String VALUE_METERS = "m"; //$NON-NLS-1$
   private static final String VALUE_MILES = "mi"; //$NON-NLS-1$
-  private static final String VALUE_KILOMETERS = "km"; //$NON-NLS-1$
   private static final int ITEM_INCHES = 0;
-  private static final int ITEM_METERS = 1;
+  private static final int ITEM_KILOMETERS = 1;
-  private static final int ITEM_MILES = 2;
+  private static final int ITEM_METERS = 2;
-  private static final int ITEM_KILOMETERS = 3;
+  private static final int ITEM_MILES = 3;
   /**
    * Maps value strings to internal IDs
    */
   private final static HashMap<String, Integer> valueToId =
     new HashMap<String, Integer>();
-  /* Unit spinners (dropdowns) */
-  private Spinner spinnerUnit1;
-  private Spinner spinnerUnit2;
   static
+  {
     LengthsActivity.valueToId.put(LengthsActivity.VALUE_INCHES,
       LengthsActivity.ITEM_INCHES);
+    LengthsActivity.valueToId.put(LengthsActivity.VALUE_KILOMETERS,
+      LengthsActivity.ITEM_KILOMETERS);
     LengthsActivity.valueToId.put(LengthsActivity.VALUE_METERS,
       LengthsActivity.ITEM_METERS);
     LengthsActivity.valueToId.put(LengthsActivity.VALUE_MILES,
       LengthsActivity.ITEM_MILES);
-    LengthsActivity.valueToId.put(LengthsActivity.VALUE_KILOMETERS,
-      LengthsActivity.ITEM_KILOMETERS);
+  }
+  /* Unit spinners (dropdowns) */
+  private Spinner spinnerUnit1;
+  private Spinner spinnerUnit2;
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState)
+  {
     super.onCreate(savedInstanceState);
     this.setContentView(R.layout.activity_lengths);
     final EditText editValue1 = (EditText) this.findViewById(R.id.edit_value1);
     final EditText editValue2 = (EditText) this.findViewById(R.id.edit_value2);
     final OnKeyListener editValue1OnKey = new OnKeyListener() {
       @Override
       public boolean onKey(View v, int keyCode, KeyEvent event)
+      {
         Editable editable1 = ((EditText) v).getText();
-        double value1;
+        Double value1;
         try
+        {
           value1 = Double.parseDouble(editable1.toString());
+        }
         catch (NumberFormatException e)
+        {
-          value1 = -1.0;
+          value1 = null;
+        }
         String string2 = ""; //$NON-NLS-1$
-        if (value1 >= 0.0)
+        if (value1 != null)
+        {
           string2 = LengthsActivity.this.getConvertedValue(value1, false);
+        }
         editValue2.setText(string2);
         return false;
+      }
     };
     editValue1.setOnKeyListener(editValue1OnKey);
     final OnKeyListener editValue2OnKey = new OnKeyListener() {
       @Override
       public boolean onKey(View v, int keyCode, KeyEvent event)
+      {
         Editable editable2 = ((EditText) v).getText();
-        double value2;
+        Double value2;
         try
+        {
           value2 = Double.parseDouble(editable2.toString());
+        }
         catch (NumberFormatException e)
+        {
-          value2 = -1.0;
+          value2 = null;
+        }
         String string1 = ""; //$NON-NLS-1$
-        if (value2 >= 0.0)
+        if (value2 != null)
+        {
           string1 = LengthsActivity.this.getConvertedValue(value2, true);
+        }
         editValue1.setText(string1);
         return false;
+      }
     };
     editValue2.setOnKeyListener(editValue2OnKey);
     this.spinnerUnit1 = (Spinner) this.findViewById(R.id.spinner_unit1);
     this.spinnerUnit2 = (Spinner) this.findViewById(R.id.spinner_unit2);
     this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
       @Override
       public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
         long arg3)
+      {
         /* Simulate input in second EditText so that first EditText is updated */
         editValue2OnKey.onKey(editValue2, 0, null);
+      }
       @Override
       public void onNothingSelected(AdapterView<?> arg0)
+      {
         /* no-op */
+      }
     });
+    this.spinnerUnit2.setSelection(1);
     this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
       @Override
       public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
         long arg3)
+      {
         /* Simulate input in first EditText so that second EditText is updated */
         editValue1OnKey.onKey(editValue1, 0, null);
+      }
       @Override
       public void onNothingSelected(AdapterView<?> arg0)
+      {
         /* no-op */
+      }
     });
+  }
   /**
    * @param value
    * @return
    */
   private String getConvertedValue(double value, boolean reverse)
+  {
     int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
     int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
     String[] itemArray =
       this.getResources().getStringArray(R.array.length_units_values);
     String selectedItemValue1 = itemArray[selectedItemPosition1];
     String selectedItemValue2 = itemArray[selectedItemPosition2];
     if (reverse)
+    {
       String tmp = selectedItemValue1;
       selectedItemValue1 = selectedItemValue2;
       selectedItemValue2 = tmp;
+    }
     int itemId1 = LengthsActivity.valueToId.get(selectedItemValue1);
     int itemId2 = LengthsActivity.valueToId.get(selectedItemValue2);
     Double newValue = value;
     switch (itemId1)
+    {
       case ITEM_INCHES:
         switch (itemId2)
+        {
+          case ITEM_KILOMETERS:
+            /* see ITEM_METERS */
+            newValue = new Double((value * 0.0254) / 1000);
+            break;
           case ITEM_METERS:
             newValue = new Double(value * 0.0254);
             break;
           case ITEM_MILES:
             /* 12 in/ft and 5280 ft/mi */
             newValue = new Double(value / 12 / 5280);
             break;
+        }
+        break;
-          case ITEM_KILOMETERS:
+      case ITEM_KILOMETERS:
+        switch (itemId2)
+        {
+          case ITEM_INCHES:
+            /* 1 m = 39.370 in */
+            newValue = new Double(value * 1000 * 39.370);
+            break;
-            /* see ITEM_METERS */
+          case ITEM_METERS:
-            newValue = new Double((value * 0.0254) / 1000);
+            newValue = new Double(value * 1000);
+            break;
+          case ITEM_MILES:
+            newValue = new Double(value / 1.609344);
             break;
+        }
         break;
       case ITEM_METERS:
         switch (itemId2)
+        {
-          case ITEM_KILOMETERS:
-            newValue = new Double(value / 1000);
-            break;
           case ITEM_INCHES:
             /* 1 m = 39.370 in */
             newValue = new Double(value * 39.370);
             break;
+          case ITEM_KILOMETERS:
+            newValue = new Double(value / 1000);
+            break;
           case ITEM_MILES:
             /* 1 mi = 1609.344 m */
             newValue = new Double(value / 1609.344);
             break;
+        }
         break;
       case ITEM_MILES:
         switch (itemId2)
+        {
           case ITEM_INCHES:
             /* 1 mi = 5280 ft, 1 ft = 12 in */
             newValue = new Double(value * 5280 * 12);
             break;
-          case ITEM_METERS:
-            newValue = new Double(value * 1609.344);
-            break;
           case ITEM_KILOMETERS:
             newValue = new Double(value * 1.609344);
             break;
-        }
-        break;
-      case ITEM_KILOMETERS:
-        switch (itemId2)
-        {
-          case ITEM_INCHES:
-            /* 1 m = 39.370 in */
-            newValue = new Double(value * 1000 * 39.370);
-            break;
           case ITEM_METERS:
-            newValue = new Double(value * 1000);
-            break;
-          case ITEM_MILES:
-            newValue = new Double(value / 1.609344);
+            newValue = new Double(value * 1609.344);
             break;
+        }
+        break;
+    }
     return newValue.toString();
+  }
+}

Subversion Repositories ES

(root)/trunk/src/ch/ffhs/converter/app/LengthsActivity.java - Rev 6 → 7