WebSVN - ES - Diff - Rev 8 and 13 - /trunk/src/de/pointedears/converter/app/TemperaturesActivity.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 android.widget.TextView;
import de.pointedears.converter.R;

/**
 * Activity that implements length conversion
 *
 * @author pelinux
 */
public class TemperaturesActivity extends Activity
{
  /*
   * Constants for mapping value strings to internal IDs
   */
  private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$
  private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$
  private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$
  private static final int ITEM_CELSIUS = 0;
  private static final int ITEM_FAHRENHEIT = 1;
  private static final int ITEM_KELVIN = 2;

  /**
   * 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;

  /* Hint that value is off scale */
  private TextView textOffScale;

  static
  {
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,
      TemperaturesActivity.ITEM_CELSIUS);
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,
      TemperaturesActivity.ITEM_FAHRENHEIT);
    TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,
      TemperaturesActivity.ITEM_KELVIN);
  }

  /** Called when the activity is first created. */

  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.activity_temperatures);

    this.textOffScale =
      (TextView) this.findViewById(R.id.temperatures_text_off_scale);

    final EditText editValue1 =
      (EditText) this.findViewById(R.id.temperatures_edit_value1);
    final EditText editValue2 =
      (EditText) this.findViewById(R.id.temperatures_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 = TemperaturesActivity.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 = TemperaturesActivity.this.getConvertedValue(value2, true);
        }

        editValue1.setText(string1);

        return false;
      }
    };
    editValue2.setOnKeyListener(editValue2OnKey);

    this.spinnerUnit1 =
      (Spinner) this.findViewById(R.id.temperatures_spinner_unit1);
    this.spinnerUnit2 =
      (Spinner) this.findViewById(R.id.temperatures_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.temperatures_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.temperature_units_values);
    String selectedItemValue1 = itemArray[selectedItemPosition1];
    String selectedItemValue2 = itemArray[selectedItemPosition2];

    if (reverse)
    {
      String tmp = selectedItemValue1;
      selectedItemValue1 = selectedItemValue2;
      selectedItemValue2 = tmp;
    }

    int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);
    int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);

    Double newValue = value;

    this.textOffScale.setVisibility(View.INVISIBLE);

    switch (itemId1)
    {
      case ITEM_CELSIUS:
        switch (itemId2)
        {
          case ITEM_FAHRENHEIT:
            newValue = new Double(value * 9.0 / 5 + 32);
            break;

          case ITEM_KELVIN:
            newValue = new Double(value + 273.15);

            if (newValue < 0.0)
            {
              this.textOffScale.setVisibility(View.VISIBLE);
              return "*" + newValue.toString();
            }
            break;
        }
        break;

      case ITEM_FAHRENHEIT:
        switch (itemId2)
        {
          case ITEM_CELSIUS:
            newValue = new Double((value - 32) * 5.0 / 9);
            break;

          case ITEM_KELVIN:
            newValue = new Double((value + 459.67) * 5.0 / 9);

            if (newValue < 0.0)
            {
              this.textOffScale.setVisibility(View.VISIBLE);
              return "*" + newValue.toString();
            }
            break;
        }
        break;

      case ITEM_KELVIN:
        switch (itemId2)
        {
          case ITEM_CELSIUS:
            newValue = new Double(value - 273.15);
            break;

          case ITEM_FAHRENHEIT:
            newValue = new Double(value * 9.0 / 5 - 459.67);
            break;
        }

        if (value < 0.0)
        {
          this.textOffScale.setVisibility(View.VISIBLE);
          return "*" + newValue.toString();
        }
        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 android.widget.TextView;	17	import android.widget.TextView;
16	import de.pointedears.converter.R;	18	import de.pointedears.converter.R;
17		19
18	/**	20	/**
19	* Activity that implements length conversion	21	* Activity that implements length conversion
20	*	22	*
21	* @author pelinux	23	* @author pelinux
22	*/	24	*/
23	public class TemperaturesActivity extends Activity	25	public class TemperaturesActivity extends Activity
24	{	26	{
25	/*	27	/*
26	* Constants for mapping value strings to internal IDs	28	* Constants for mapping value strings to internal IDs
27	*/	29	*/
28	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$	30	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$
29	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$	31	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$
30	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$	32	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$
31	private static final int ITEM_CELSIUS = 0;	33	private static final int ITEM_CELSIUS = 0;
32	private static final int ITEM_FAHRENHEIT = 1;	34	private static final int ITEM_FAHRENHEIT = 1;
33	private static final int ITEM_KELVIN = 2;	35	private static final int ITEM_KELVIN = 2;
34		36
35	/**	37	/**
36	* Maps value strings to internal IDs	38	* Maps value strings to internal IDs
37	*/	39	*/
38	private final static HashMap<String, Integer> valueToId =	40	private final static HashMap<String, Integer> valueToId =
39	new HashMap<String, Integer>();	41	new HashMap<String, Integer>();
40		42
41	/* Unit spinners (dropdowns) */	43	/* Unit spinners (dropdowns) */
42	private Spinner spinnerUnit1;	44	private Spinner spinnerUnit1;
43	private Spinner spinnerUnit2;	45	private Spinner spinnerUnit2;
44		46
45	/* Hint that value is off scale */	47	/* Hint that value is off scale */
46	private TextView textOffScale;	48	private TextView textOffScale;
47		49
48	static	50	static
49	{	51	{
50	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,	52	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,
51	TemperaturesActivity.ITEM_CELSIUS);	53	TemperaturesActivity.ITEM_CELSIUS);
52	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,	54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,
53	TemperaturesActivity.ITEM_FAHRENHEIT);	55	TemperaturesActivity.ITEM_FAHRENHEIT);
54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,	56	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,
55	TemperaturesActivity.ITEM_KELVIN);	57	TemperaturesActivity.ITEM_KELVIN);
56	}	58	}
57		59
58	/** Called when the activity is first created. */	60	/** Called when the activity is first created. */
59		61
60	@Override	62	@Override
61	public void onCreate(Bundle savedInstanceState)	63	public void onCreate(Bundle savedInstanceState)
62	{	64	{
63	super.onCreate(savedInstanceState);	65	super.onCreate(savedInstanceState);
64	this.setContentView(R.layout.activity_temperatures);	66	this.setContentView(R.layout.activity_temperatures);
65		67
66	this.textOffScale =	68	this.textOffScale =
67	(TextView) this.findViewById(R.id.temperatures_text_off_scale);	69	(TextView) this.findViewById(R.id.temperatures_text_off_scale);
68		70
69	final EditText editValue1 =	71	final EditText editValue1 =
70	(EditText) this.findViewById(R.id.temperatures_edit_value1);	72	(EditText) this.findViewById(R.id.temperatures_edit_value1);
71	final EditText editValue2 =	73	final EditText editValue2 =
72	(EditText) this.findViewById(R.id.temperatures_edit_value2);	74	(EditText) this.findViewById(R.id.temperatures_edit_value2);
73		75
74	final OnKeyListener editValue1OnKey = new OnKeyListener() {	76	final OnKeyListener editValue1OnKey = new OnKeyListener() {
75	@Override	77	@Override
76	public boolean onKey(View v, int keyCode, KeyEvent event)	78	public boolean onKey(View v, int keyCode, KeyEvent event)
77	{	79	{
78	Editable editable1 = ((EditText) v).getText();	80	Editable editable1 = ((EditText) v).getText();
79		81
80	Double value1;	82	Double value1;
81	try	83	try
82	{	84	{
83	value1 = Double.parseDouble(editable1.toString());	85	value1 = Double.parseDouble(editable1.toString());
84	}	86	}
85	catch (NumberFormatException e)	87	catch (NumberFormatException e)
86	{	88	{
87	value1 = null;	89	value1 = null;
88	}	90	}
89		91
90	String string2 = ""; //$NON-NLS-1$	92	String string2 = ""; //$NON-NLS-1$
91	if (value1 != null)	93	if (value1 != null)
92	{	94	{
93	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);	95	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);
94	}	96	}
95		97
96	editValue2.setText(string2);	98	editValue2.setText(string2);
97		99
98	return false;	100	return false;
99	}	101	}
100	};	102	};
101	editValue1.setOnKeyListener(editValue1OnKey);	103	editValue1.setOnKeyListener(editValue1OnKey);
102		104
103	final OnKeyListener editValue2OnKey = new OnKeyListener() {	105	final OnKeyListener editValue2OnKey = new OnKeyListener() {
104	@Override	106	@Override
105	public boolean onKey(View v, int keyCode, KeyEvent event)	107	public boolean onKey(View v, int keyCode, KeyEvent event)
106	{	108	{
107	Editable editable2 = ((EditText) v).getText();	109	Editable editable2 = ((EditText) v).getText();
108		110
109	Double value2;	111	Double value2;
110	try	112	try
111	{	113	{
112	value2 = Double.parseDouble(editable2.toString());	114	value2 = Double.parseDouble(editable2.toString());
113	}	115	}
114	catch (NumberFormatException e)	116	catch (NumberFormatException e)
115	{	117	{
116	value2 = null;	118	value2 = null;
117	}	119	}
118		120
119	String string1 = ""; //$NON-NLS-1$	121	String string1 = ""; //$NON-NLS-1$
120	if (value2 != null)	122	if (value2 != null)
121	{	123	{
122	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);	124	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);
123	}	125	}
124		126
125	editValue1.setText(string1);	127	editValue1.setText(string1);
126		128
127	return false;	129	return false;
128	}	130	}
129	};	131	};
130	editValue2.setOnKeyListener(editValue2OnKey);	132	editValue2.setOnKeyListener(editValue2OnKey);
131		133
132	this.spinnerUnit1 =	134	this.spinnerUnit1 =
133	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);	135	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);
134	this.spinnerUnit2 =	136	this.spinnerUnit2 =
135	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);	137	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);
136		138
137	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {	139	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
138	@Override	140	@Override
139	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	141	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
140	long arg3)	142	long arg3)
141	{	143	{
142	/* Simulate input in second EditText so that first EditText is updated */	144	/* Simulate input in second EditText so that first EditText is updated */
143	editValue2OnKey.onKey(editValue2, 0, null);	145	editValue2OnKey.onKey(editValue2, 0, null);
144	}	146	}
145		147
146	@Override	148	@Override
147	public void onNothingSelected(AdapterView<?> arg0)	149	public void onNothingSelected(AdapterView<?> arg0)
148	{	150	{
149	/* no-op */	151	/* no-op */
150	}	152	}
151	});	153	});
152		154
153	this.spinnerUnit2.setSelection(1);	155	this.spinnerUnit2.setSelection(1);
154	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {	156	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
155	@Override	157	@Override
156	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	158	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
157	long arg3)	159	long arg3)
158	{	160	{
159	/* Simulate input in first EditText so that second EditText is updated */	161	/* Simulate input in first EditText so that second EditText is updated */
160	editValue1OnKey.onKey(editValue1, 0, null);	162	editValue1OnKey.onKey(editValue1, 0, null);
161	}	163	}
162		164
163	@Override	165	@Override
164	public void onNothingSelected(AdapterView<?> arg0)	166	public void onNothingSelected(AdapterView<?> arg0)
165	{	167	{
166	/* no-op */	168	/* no-op */
167	}	169	}
-		170	});
-		171
-		172	Button buttonClear =
-		173	(Button) this.findViewById(R.id.temperatures_button_clear);
-		174	buttonClear.setOnClickListener(new OnClickListener() {
-		175
-		176	@SuppressWarnings("nls")
-		177	@Override
-		178	public void onClick(View v)
-		179	{
-		180	editValue1.setText("");
-		181	editValue2.setText("");
-		182	}
168	});	183	});
169	}	184	}
170		185
171	/**	186	/**
172	* @param value	187	* @param value
173	* @return	188	* @return
174	*/	189	*/
175	private String getConvertedValue(double value, boolean reverse)	190	private String getConvertedValue(double value, boolean reverse)
176	{	191	{
177	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();	192	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
178	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();	193	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
179	String[] itemArray =	194	String[] itemArray =
180	this.getResources().getStringArray(R.array.temperature_units_values);	195	this.getResources().getStringArray(R.array.temperature_units_values);
181	String selectedItemValue1 = itemArray[selectedItemPosition1];	196	String selectedItemValue1 = itemArray[selectedItemPosition1];
182	String selectedItemValue2 = itemArray[selectedItemPosition2];	197	String selectedItemValue2 = itemArray[selectedItemPosition2];
183		198
184	if (reverse)	199	if (reverse)
185	{	200	{
186	String tmp = selectedItemValue1;	201	String tmp = selectedItemValue1;
187	selectedItemValue1 = selectedItemValue2;	202	selectedItemValue1 = selectedItemValue2;
188	selectedItemValue2 = tmp;	203	selectedItemValue2 = tmp;
189	}	204	}
190		205
191	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);	206	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);
192	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);	207	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);
193		208
194	Double newValue = value;	209	Double newValue = value;
195		210
196	this.textOffScale.setVisibility(View.INVISIBLE);	211	this.textOffScale.setVisibility(View.INVISIBLE);
197		212
198	switch (itemId1)	213	switch (itemId1)
199	{	214	{
200	case ITEM_CELSIUS:	215	case ITEM_CELSIUS:
201	switch (itemId2)	216	switch (itemId2)
202	{	217	{
203	case ITEM_FAHRENHEIT:	218	case ITEM_FAHRENHEIT:
204	newValue = new Double(value * 9.0 / 5 + 32);	219	newValue = new Double(value * 9.0 / 5 + 32);
205	break;	220	break;
206		221
207	case ITEM_KELVIN:	222	case ITEM_KELVIN:
208	newValue = new Double(value + 273.15);	223	newValue = new Double(value + 273.15);
209		224
210	if (newValue < 0.0)	225	if (newValue < 0.0)
211	{	226	{
212	this.textOffScale.setVisibility(View.VISIBLE);	227	this.textOffScale.setVisibility(View.VISIBLE);
213	return "*" + newValue.toString();	228	return "*" + newValue.toString();
214	}	229	}
215	break;	230	break;
216	}	231	}
217	break;	232	break;
218		233
219	case ITEM_FAHRENHEIT:	234	case ITEM_FAHRENHEIT:
220	switch (itemId2)	235	switch (itemId2)
221	{	236	{
222	case ITEM_CELSIUS:	237	case ITEM_CELSIUS:
223	newValue = new Double((value - 32) * 5.0 / 9);	238	newValue = new Double((value - 32) * 5.0 / 9);
224	break;	239	break;
225		240
226	case ITEM_KELVIN:	241	case ITEM_KELVIN:
227	newValue = new Double((value + 459.67) * 5.0 / 9);	242	newValue = new Double((value + 459.67) * 5.0 / 9);
228		243
229	if (newValue < 0.0)	244	if (newValue < 0.0)
230	{	245	{
231	this.textOffScale.setVisibility(View.VISIBLE);	246	this.textOffScale.setVisibility(View.VISIBLE);
232	return "*" + newValue.toString();	247	return "*" + newValue.toString();
233	}	248	}
234	break;	249	break;
235	}	250	}
236	break;	251	break;
237		252
238	case ITEM_KELVIN:	253	case ITEM_KELVIN:
239	switch (itemId2)	254	switch (itemId2)
240	{	255	{
241	case ITEM_CELSIUS:	256	case ITEM_CELSIUS:
242	newValue = new Double(value - 273.15);	257	newValue = new Double(value - 273.15);
243	break;	258	break;
244		259
245	case ITEM_FAHRENHEIT:	260	case ITEM_FAHRENHEIT:
246	newValue = new Double(value * 9.0 / 5 - 459.67);	261	newValue = new Double(value * 9.0 / 5 - 459.67);
247	break;	262	break;
248	}	263	}
249		264
250	if (value < 0.0)	265	if (value < 0.0)
251	{	266	{
252	this.textOffScale.setVisibility(View.VISIBLE);	267	this.textOffScale.setVisibility(View.VISIBLE);
253	return "*" + newValue.toString();	268	return "*" + newValue.toString();
254	}	269	}
255	break;	270	break;
256	}	271	}
257		272
258	return newValue.toString();	273	return newValue.toString();
259	}	274	}
260	}	275	}
261		276

Subversion Repositories ES

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