WebSVN - ES - Diff - Rev 8 and 13 - /trunk/src/de/pointedears/converter/app/LengthsActivity.java


package de.pointedears.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.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import de.pointedears.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 int ITEM_INCHES = 0;
  private static final int ITEM_KILOMETERS = 1;
  private static final int ITEM_METERS = 2;
  private static final int ITEM_MILES = 3;

  /**
   * Maps value strings to internal IDs
   */
  private final static HashMap<String, Integer> valueToId =
    new HashMap<String, Integer>();
  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);
  }

  /* 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;
        try
        {
          value1 = Double.parseDouble(editable1.toString());
        }
        catch (NumberFormatException e)
        {
          value1 = null;
        }

        String string2 = ""; //$NON-NLS-1$
        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;
        try
        {
          value2 = Double.parseDouble(editable2.toString());
        }
        catch (NumberFormatException e)
        {
          value2 = null;
        }

        String string1 = ""; //$NON-NLS-1$
        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 */
      }
    });

    Button buttonClear =
      (Button) this.findViewById(R.id.lengths_button_clear);
    buttonClear.setOnClickListener(new OnClickListener() {

      @SuppressWarnings("nls")
      @Override
      public void onClick(View v)
      {
        editValue1.setText("");
        editValue2.setText("");
      }
    });
  }

  /**
   * @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:
        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);
            break;
        }
        break;

      case ITEM_METERS:
        switch (itemId2)
        {
          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_KILOMETERS:
            newValue = new Double(value * 1.609344);
            break;

          case ITEM_METERS:
            newValue = new Double(value * 1609.344);
            break;
        }
        break;
    }

    return newValue.toString();
  }
}
 

Rev 8	Rev 13
1	package de.pointedears.converter.app;	1	package de.pointedears.converter.app;
2		2
3	import java.util.HashMap;	3	import java.util.HashMap;
4		4
5	import android.app.Activity;	5	import android.app.Activity;
6	import android.os.Bundle;	6	import android.os.Bundle;
7	import android.text.Editable;	7	import android.text.Editable;
8	import android.view.KeyEvent;	8	import android.view.KeyEvent;
9	import android.view.View;	9	import android.view.View;
-		10	import android.view.View.OnClickListener;
10	import android.view.View.OnKeyListener;	11	import android.view.View.OnKeyListener;
11	import android.widget.AdapterView;	12	import android.widget.AdapterView;
12	import android.widget.AdapterView.OnItemSelectedListener;	13	import android.widget.AdapterView.OnItemSelectedListener;
-		14	import android.widget.Button;
13	import android.widget.EditText;	15	import android.widget.EditText;
14	import android.widget.Spinner;	16	import android.widget.Spinner;
15	import de.pointedears.converter.R;	17	import de.pointedears.converter.R;
16		18
17	/**	19	/**
18	* Activity that implements length conversion	20	* Activity that implements length conversion
19	*	21	*
20	* @author pelinux	22	* @author pelinux
21	*/	23	*/
22	public class LengthsActivity extends Activity	24	public class LengthsActivity extends Activity
23	{	25	{
24	/*	26	/*
25	* Constants for mapping value strings to internal IDs	27	* Constants for mapping value strings to internal IDs
26	*/	28	*/
27	private static final String VALUE_INCHES = "inch"; //$NON-NLS-1$	29	private static final String VALUE_INCHES = "inch"; //$NON-NLS-1$
28	private static final String VALUE_KILOMETERS = "km"; //$NON-NLS-1$	30	private static final String VALUE_KILOMETERS = "km"; //$NON-NLS-1$
29	private static final String VALUE_METERS = "m"; //$NON-NLS-1$	31	private static final String VALUE_METERS = "m"; //$NON-NLS-1$
30	private static final String VALUE_MILES = "mi"; //$NON-NLS-1$	32	private static final String VALUE_MILES = "mi"; //$NON-NLS-1$
31	private static final int ITEM_INCHES = 0;	33	private static final int ITEM_INCHES = 0;
32	private static final int ITEM_KILOMETERS = 1;	34	private static final int ITEM_KILOMETERS = 1;
33	private static final int ITEM_METERS = 2;	35	private static final int ITEM_METERS = 2;
34	private static final int ITEM_MILES = 3;	36	private static final int ITEM_MILES = 3;
35		37
36	/**	38	/**
37	* Maps value strings to internal IDs	39	* Maps value strings to internal IDs
38	*/	40	*/
39	private final static HashMap<String, Integer> valueToId =	41	private final static HashMap<String, Integer> valueToId =
40	new HashMap<String, Integer>();	42	new HashMap<String, Integer>();
41	static	43	static
42	{	44	{
43	LengthsActivity.valueToId.put(LengthsActivity.VALUE_INCHES,	45	LengthsActivity.valueToId.put(LengthsActivity.VALUE_INCHES,
44	LengthsActivity.ITEM_INCHES);	46	LengthsActivity.ITEM_INCHES);
45	LengthsActivity.valueToId.put(LengthsActivity.VALUE_KILOMETERS,	47	LengthsActivity.valueToId.put(LengthsActivity.VALUE_KILOMETERS,
46	LengthsActivity.ITEM_KILOMETERS);	48	LengthsActivity.ITEM_KILOMETERS);
47	LengthsActivity.valueToId.put(LengthsActivity.VALUE_METERS,	49	LengthsActivity.valueToId.put(LengthsActivity.VALUE_METERS,
48	LengthsActivity.ITEM_METERS);	50	LengthsActivity.ITEM_METERS);
49	LengthsActivity.valueToId.put(LengthsActivity.VALUE_MILES,	51	LengthsActivity.valueToId.put(LengthsActivity.VALUE_MILES,
50	LengthsActivity.ITEM_MILES);	52	LengthsActivity.ITEM_MILES);
51	}	53	}
52		54
53	/* Unit spinners (dropdowns) */	55	/* Unit spinners (dropdowns) */
54	private Spinner spinnerUnit1;	56	private Spinner spinnerUnit1;
55	private Spinner spinnerUnit2;	57	private Spinner spinnerUnit2;
56		58
57	/** Called when the activity is first created. */	59	/** Called when the activity is first created. */
58		60
59	@Override	61	@Override
60	public void onCreate(Bundle savedInstanceState)	62	public void onCreate(Bundle savedInstanceState)
61	{	63	{
62	super.onCreate(savedInstanceState);	64	super.onCreate(savedInstanceState);
63	this.setContentView(R.layout.activity_lengths);	65	this.setContentView(R.layout.activity_lengths);
64		66
65	final EditText editValue1 = (EditText) this.findViewById(R.id.edit_value1);	67	final EditText editValue1 = (EditText) this.findViewById(R.id.edit_value1);
66	final EditText editValue2 = (EditText) this.findViewById(R.id.edit_value2);	68	final EditText editValue2 = (EditText) this.findViewById(R.id.edit_value2);
67		69
68	final OnKeyListener editValue1OnKey = new OnKeyListener() {	70	final OnKeyListener editValue1OnKey = new OnKeyListener() {
69	@Override	71	@Override
70	public boolean onKey(View v, int keyCode, KeyEvent event)	72	public boolean onKey(View v, int keyCode, KeyEvent event)
71	{	73	{
72	Editable editable1 = ((EditText) v).getText();	74	Editable editable1 = ((EditText) v).getText();
73		75
74	Double value1;	76	Double value1;
75	try	77	try
76	{	78	{
77	value1 = Double.parseDouble(editable1.toString());	79	value1 = Double.parseDouble(editable1.toString());
78	}	80	}
79	catch (NumberFormatException e)	81	catch (NumberFormatException e)
80	{	82	{
81	value1 = null;	83	value1 = null;
82	}	84	}
83		85
84	String string2 = ""; //$NON-NLS-1$	86	String string2 = ""; //$NON-NLS-1$
85	if (value1 != null)	87	if (value1 != null)
86	{	88	{
87	string2 = LengthsActivity.this.getConvertedValue(value1, false);	89	string2 = LengthsActivity.this.getConvertedValue(value1, false);
88	}	90	}
89		91
90	editValue2.setText(string2);	92	editValue2.setText(string2);
91		93
92	return false;	94	return false;
93	}	95	}
94	};	96	};
95	editValue1.setOnKeyListener(editValue1OnKey);	97	editValue1.setOnKeyListener(editValue1OnKey);
96		98
97	final OnKeyListener editValue2OnKey = new OnKeyListener() {	99	final OnKeyListener editValue2OnKey = new OnKeyListener() {
98	@Override	100	@Override
99	public boolean onKey(View v, int keyCode, KeyEvent event)	101	public boolean onKey(View v, int keyCode, KeyEvent event)
100	{	102	{
101	Editable editable2 = ((EditText) v).getText();	103	Editable editable2 = ((EditText) v).getText();
102		104
103	Double value2;	105	Double value2;
104	try	106	try
105	{	107	{
106	value2 = Double.parseDouble(editable2.toString());	108	value2 = Double.parseDouble(editable2.toString());
107	}	109	}
108	catch (NumberFormatException e)	110	catch (NumberFormatException e)
109	{	111	{
110	value2 = null;	112	value2 = null;
111	}	113	}
112		114
113	String string1 = ""; //$NON-NLS-1$	115	String string1 = ""; //$NON-NLS-1$
114	if (value2 != null)	116	if (value2 != null)
115	{	117	{
116	string1 = LengthsActivity.this.getConvertedValue(value2, true);	118	string1 = LengthsActivity.this.getConvertedValue(value2, true);
117	}	119	}
118		120
119	editValue1.setText(string1);	121	editValue1.setText(string1);
120		122
121	return false;	123	return false;
122	}	124	}
123	};	125	};
124	editValue2.setOnKeyListener(editValue2OnKey);	126	editValue2.setOnKeyListener(editValue2OnKey);
125		127
126	this.spinnerUnit1 = (Spinner) this.findViewById(R.id.spinner_unit1);	128	this.spinnerUnit1 = (Spinner) this.findViewById(R.id.spinner_unit1);
127	this.spinnerUnit2 = (Spinner) this.findViewById(R.id.spinner_unit2);	129	this.spinnerUnit2 = (Spinner) this.findViewById(R.id.spinner_unit2);
128		130
129	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {	131	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
130	@Override	132	@Override
131	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	133	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
132	long arg3)	134	long arg3)
133	{	135	{
134	/* Simulate input in second EditText so that first EditText is updated */	136	/* Simulate input in second EditText so that first EditText is updated */
135	editValue2OnKey.onKey(editValue2, 0, null);	137	editValue2OnKey.onKey(editValue2, 0, null);
136	}	138	}
137		139
138	@Override	140	@Override
139	public void onNothingSelected(AdapterView<?> arg0)	141	public void onNothingSelected(AdapterView<?> arg0)
140	{	142	{
141	/* no-op */	143	/* no-op */
142	}	144	}
143	});	145	});
144		146
145	this.spinnerUnit2.setSelection(1);	147	this.spinnerUnit2.setSelection(1);
146	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {	148	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
147	@Override	149	@Override
148	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	150	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
149	long arg3)	151	long arg3)
150	{	152	{
151	/* Simulate input in first EditText so that second EditText is updated */	153	/* Simulate input in first EditText so that second EditText is updated */
152	editValue1OnKey.onKey(editValue1, 0, null);	154	editValue1OnKey.onKey(editValue1, 0, null);
153	}	155	}
154		156
155	@Override	157	@Override
156	public void onNothingSelected(AdapterView<?> arg0)	158	public void onNothingSelected(AdapterView<?> arg0)
157	{	159	{
158	/* no-op */	160	/* no-op */
159	}	161	}
-		162	});
-		163
-		164	Button buttonClear =
-		165	(Button) this.findViewById(R.id.lengths_button_clear);
-		166	buttonClear.setOnClickListener(new OnClickListener() {
-		167
-		168	@SuppressWarnings("nls")
-		169	@Override
-		170	public void onClick(View v)
-		171	{
-		172	editValue1.setText("");
-		173	editValue2.setText("");
-		174	}
160	});	175	});
161	}	176	}
162		177
163	/**	178	/**
164	* @param value	179	* @param value
165	* @return	180	* @return
166	*/	181	*/
167	private String getConvertedValue(double value, boolean reverse)	182	private String getConvertedValue(double value, boolean reverse)
168	{	183	{
169	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();	184	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
170	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();	185	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
171	String[] itemArray =	186	String[] itemArray =
172	this.getResources().getStringArray(R.array.length_units_values);	187	this.getResources().getStringArray(R.array.length_units_values);
173	String selectedItemValue1 = itemArray[selectedItemPosition1];	188	String selectedItemValue1 = itemArray[selectedItemPosition1];
174	String selectedItemValue2 = itemArray[selectedItemPosition2];	189	String selectedItemValue2 = itemArray[selectedItemPosition2];
175		190
176	if (reverse)	191	if (reverse)
177	{	192	{
178	String tmp = selectedItemValue1;	193	String tmp = selectedItemValue1;
179	selectedItemValue1 = selectedItemValue2;	194	selectedItemValue1 = selectedItemValue2;
180	selectedItemValue2 = tmp;	195	selectedItemValue2 = tmp;
181	}	196	}
182		197
183	int itemId1 = LengthsActivity.valueToId.get(selectedItemValue1);	198	int itemId1 = LengthsActivity.valueToId.get(selectedItemValue1);
184	int itemId2 = LengthsActivity.valueToId.get(selectedItemValue2);	199	int itemId2 = LengthsActivity.valueToId.get(selectedItemValue2);
185		200
186	Double newValue = value;	201	Double newValue = value;
187		202
188	switch (itemId1)	203	switch (itemId1)
189	{	204	{
190	case ITEM_INCHES:	205	case ITEM_INCHES:
191	switch (itemId2)	206	switch (itemId2)
192	{	207	{
193	case ITEM_KILOMETERS:	208	case ITEM_KILOMETERS:
194	/* see ITEM_METERS */	209	/* see ITEM_METERS */
195	newValue = new Double((value * 0.0254) / 1000);	210	newValue = new Double((value * 0.0254) / 1000);
196	break;	211	break;
197		212
198	case ITEM_METERS:	213	case ITEM_METERS:
199	newValue = new Double(value * 0.0254);	214	newValue = new Double(value * 0.0254);
200	break;	215	break;
201		216
202	case ITEM_MILES:	217	case ITEM_MILES:
203	/* 12 in/ft and 5280 ft/mi */	218	/* 12 in/ft and 5280 ft/mi */
204	newValue = new Double(value / 12 / 5280);	219	newValue = new Double(value / 12 / 5280);
205	break;	220	break;
206	}	221	}
207	break;	222	break;
208		223
209	case ITEM_KILOMETERS:	224	case ITEM_KILOMETERS:
210	switch (itemId2)	225	switch (itemId2)
211	{	226	{
212	case ITEM_INCHES:	227	case ITEM_INCHES:
213	/* 1 m = 39.370 in */	228	/* 1 m = 39.370 in */
214	newValue = new Double(value * 1000 * 39.370);	229	newValue = new Double(value * 1000 * 39.370);
215	break;	230	break;
216		231
217	case ITEM_METERS:	232	case ITEM_METERS:
218	newValue = new Double(value * 1000);	233	newValue = new Double(value * 1000);
219	break;	234	break;
220		235
221	case ITEM_MILES:	236	case ITEM_MILES:
222	newValue = new Double(value / 1.609344);	237	newValue = new Double(value / 1.609344);
223	break;	238	break;
224	}	239	}
225	break;	240	break;
226		241
227	case ITEM_METERS:	242	case ITEM_METERS:
228	switch (itemId2)	243	switch (itemId2)
229	{	244	{
230	case ITEM_INCHES:	245	case ITEM_INCHES:
231	/* 1 m = 39.370 in */	246	/* 1 m = 39.370 in */
232	newValue = new Double(value * 39.370);	247	newValue = new Double(value * 39.370);
233	break;	248	break;
234		249
235	case ITEM_KILOMETERS:	250	case ITEM_KILOMETERS:
236	newValue = new Double(value / 1000);	251	newValue = new Double(value / 1000);
237	break;	252	break;
238		253
239	case ITEM_MILES:	254	case ITEM_MILES:
240	/* 1 mi = 1609.344 m */	255	/* 1 mi = 1609.344 m */
241	newValue = new Double(value / 1609.344);	256	newValue = new Double(value / 1609.344);
242	break;	257	break;
243	}	258	}
244	break;	259	break;
245		260
246	case ITEM_MILES:	261	case ITEM_MILES:
247	switch (itemId2)	262	switch (itemId2)
248	{	263	{
249	case ITEM_INCHES:	264	case ITEM_INCHES:
250	/* 1 mi = 5280 ft, 1 ft = 12 in */	265	/* 1 mi = 5280 ft, 1 ft = 12 in */
251	newValue = new Double(value * 5280 * 12);	266	newValue = new Double(value * 5280 * 12);
252	break;	267	break;
253		268
254	case ITEM_KILOMETERS:	269	case ITEM_KILOMETERS:
255	newValue = new Double(value * 1.609344);	270	newValue = new Double(value * 1.609344);
256	break;	271	break;
257		272
258	case ITEM_METERS:	273	case ITEM_METERS:
259	newValue = new Double(value * 1609.344);	274	newValue = new Double(value * 1609.344);
260	break;	275	break;
261	}	276	}
262	break;	277	break;
263	}	278	}
264		279
265	return newValue.toString();	280	return newValue.toString();
266	}	281	}
267	}	282	}
268		283

Subversion Repositories ES

(root)/trunk/src/de/pointedears/converter/app/LengthsActivity.java - Rev 8 → 13