WebSVN - ES - Diff - Rev 13 and 14 - /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(); //$NON-NLS-1$
            }
            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(); //$NON-NLS-1$
            }
            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(); //$NON-NLS-1$
        }
        break;
    }

    return newValue.toString();
  }
}
 

Rev 13	Rev 14
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.OnClickListener;
11	import android.view.View.OnKeyListener;	11	import android.view.View.OnKeyListener;
12	import android.widget.AdapterView;	12	import android.widget.AdapterView;
13	import android.widget.AdapterView.OnItemSelectedListener;	13	import android.widget.AdapterView.OnItemSelectedListener;
14	import android.widget.Button;	14	import android.widget.Button;
15	import android.widget.EditText;	15	import android.widget.EditText;
16	import android.widget.Spinner;	16	import android.widget.Spinner;
17	import android.widget.TextView;	17	import android.widget.TextView;
18	import de.pointedears.converter.R;	18	import de.pointedears.converter.R;
19		19
20	/**	20	/**
21	* Activity that implements length conversion	21	* Activity that implements length conversion
22	*	22	*
23	* @author pelinux	23	* @author pelinux
24	*/	24	*/
25	public class TemperaturesActivity extends Activity	25	public class TemperaturesActivity extends Activity
26	{	26	{
27	/*	27	/*
28	* Constants for mapping value strings to internal IDs	28	* Constants for mapping value strings to internal IDs
29	*/	29	*/
30	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$	30	private static final String VALUE_CELSIUS = "C"; //$NON-NLS-1$
31	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$	31	private static final String VALUE_FAHRENHEIT = "F"; //$NON-NLS-1$
32	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$	32	private static final String VALUE_KELVIN = "K"; //$NON-NLS-1$
33	private static final int ITEM_CELSIUS = 0;	33	private static final int ITEM_CELSIUS = 0;
34	private static final int ITEM_FAHRENHEIT = 1;	34	private static final int ITEM_FAHRENHEIT = 1;
35	private static final int ITEM_KELVIN = 2;	35	private static final int ITEM_KELVIN = 2;
36		36
37	/**	37	/**
38	* Maps value strings to internal IDs	38	* Maps value strings to internal IDs
39	*/	39	*/
40	private final static HashMap<String, Integer> valueToId =	40	private final static HashMap<String, Integer> valueToId =
41	new HashMap<String, Integer>();	41	new HashMap<String, Integer>();
42		42
43	/* Unit spinners (dropdowns) */	43	/* Unit spinners (dropdowns) */
44	private Spinner spinnerUnit1;	44	private Spinner spinnerUnit1;
45	private Spinner spinnerUnit2;	45	private Spinner spinnerUnit2;
46		46
47	/* Hint that value is off scale */	47	/* Hint that value is off scale */
48	private TextView textOffScale;	48	private TextView textOffScale;
49		49
50	static	50	static
51	{	51	{
52	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,	52	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_CELSIUS,
53	TemperaturesActivity.ITEM_CELSIUS);	53	TemperaturesActivity.ITEM_CELSIUS);
54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,	54	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_FAHRENHEIT,
55	TemperaturesActivity.ITEM_FAHRENHEIT);	55	TemperaturesActivity.ITEM_FAHRENHEIT);
56	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,	56	TemperaturesActivity.valueToId.put(TemperaturesActivity.VALUE_KELVIN,
57	TemperaturesActivity.ITEM_KELVIN);	57	TemperaturesActivity.ITEM_KELVIN);
58	}	58	}
59		59
60	/** Called when the activity is first created. */	60	/** Called when the activity is first created. */
61		61
62	@Override	62	@Override
63	public void onCreate(Bundle savedInstanceState)	63	public void onCreate(Bundle savedInstanceState)
64	{	64	{
65	super.onCreate(savedInstanceState);	65	super.onCreate(savedInstanceState);
66	this.setContentView(R.layout.activity_temperatures);	66	this.setContentView(R.layout.activity_temperatures);
67		67
68	this.textOffScale =	68	this.textOffScale =
69	(TextView) this.findViewById(R.id.temperatures_text_off_scale);	69	(TextView) this.findViewById(R.id.temperatures_text_off_scale);
70		70
71	final EditText editValue1 =	71	final EditText editValue1 =
72	(EditText) this.findViewById(R.id.temperatures_edit_value1);	72	(EditText) this.findViewById(R.id.temperatures_edit_value1);
73	final EditText editValue2 =	73	final EditText editValue2 =
74	(EditText) this.findViewById(R.id.temperatures_edit_value2);	74	(EditText) this.findViewById(R.id.temperatures_edit_value2);
75		75
76	final OnKeyListener editValue1OnKey = new OnKeyListener() {	76	final OnKeyListener editValue1OnKey = new OnKeyListener() {
77	@Override	77	@Override
78	public boolean onKey(View v, int keyCode, KeyEvent event)	78	public boolean onKey(View v, int keyCode, KeyEvent event)
79	{	79	{
80	Editable editable1 = ((EditText) v).getText();	80	Editable editable1 = ((EditText) v).getText();
81		81
82	Double value1;	82	Double value1;
83	try	83	try
84	{	84	{
85	value1 = Double.parseDouble(editable1.toString());	85	value1 = Double.parseDouble(editable1.toString());
86	}	86	}
87	catch (NumberFormatException e)	87	catch (NumberFormatException e)
88	{	88	{
89	value1 = null;	89	value1 = null;
90	}	90	}
91		91
92	String string2 = ""; //$NON-NLS-1$	92	String string2 = ""; //$NON-NLS-1$
93	if (value1 != null)	93	if (value1 != null)
94	{	94	{
95	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);	95	string2 = TemperaturesActivity.this.getConvertedValue(value1, false);
96	}	96	}
97		97
98	editValue2.setText(string2);	98	editValue2.setText(string2);
99		99
100	return false;	100	return false;
101	}	101	}
102	};	102	};
103	editValue1.setOnKeyListener(editValue1OnKey);	103	editValue1.setOnKeyListener(editValue1OnKey);
104		104
105	final OnKeyListener editValue2OnKey = new OnKeyListener() {	105	final OnKeyListener editValue2OnKey = new OnKeyListener() {
106	@Override	106	@Override
107	public boolean onKey(View v, int keyCode, KeyEvent event)	107	public boolean onKey(View v, int keyCode, KeyEvent event)
108	{	108	{
109	Editable editable2 = ((EditText) v).getText();	109	Editable editable2 = ((EditText) v).getText();
110		110
111	Double value2;	111	Double value2;
112	try	112	try
113	{	113	{
114	value2 = Double.parseDouble(editable2.toString());	114	value2 = Double.parseDouble(editable2.toString());
115	}	115	}
116	catch (NumberFormatException e)	116	catch (NumberFormatException e)
117	{	117	{
118	value2 = null;	118	value2 = null;
119	}	119	}
120		120
121	String string1 = ""; //$NON-NLS-1$	121	String string1 = ""; //$NON-NLS-1$
122	if (value2 != null)	122	if (value2 != null)
123	{	123	{
124	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);	124	string1 = TemperaturesActivity.this.getConvertedValue(value2, true);
125	}	125	}
126		126
127	editValue1.setText(string1);	127	editValue1.setText(string1);
128		128
129	return false;	129	return false;
130	}	130	}
131	};	131	};
132	editValue2.setOnKeyListener(editValue2OnKey);	132	editValue2.setOnKeyListener(editValue2OnKey);
133		133
134	this.spinnerUnit1 =	134	this.spinnerUnit1 =
135	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);	135	(Spinner) this.findViewById(R.id.temperatures_spinner_unit1);
136	this.spinnerUnit2 =	136	this.spinnerUnit2 =
137	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);	137	(Spinner) this.findViewById(R.id.temperatures_spinner_unit2);
138		138
139	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {	139	this.spinnerUnit1.setOnItemSelectedListener(new OnItemSelectedListener() {
140	@Override	140	@Override
141	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	141	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
142	long arg3)	142	long arg3)
143	{	143	{
144	/* Simulate input in second EditText so that first EditText is updated */	144	/* Simulate input in second EditText so that first EditText is updated */
145	editValue2OnKey.onKey(editValue2, 0, null);	145	editValue2OnKey.onKey(editValue2, 0, null);
146	}	146	}
147		147
148	@Override	148	@Override
149	public void onNothingSelected(AdapterView<?> arg0)	149	public void onNothingSelected(AdapterView<?> arg0)
150	{	150	{
151	/* no-op */	151	/* no-op */
152	}	152	}
153	});	153	});
154		154
155	this.spinnerUnit2.setSelection(1);	155	this.spinnerUnit2.setSelection(1);
156	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {	156	this.spinnerUnit2.setOnItemSelectedListener(new OnItemSelectedListener() {
157	@Override	157	@Override
158	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,	158	public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
159	long arg3)	159	long arg3)
160	{	160	{
161	/* Simulate input in first EditText so that second EditText is updated */	161	/* Simulate input in first EditText so that second EditText is updated */
162	editValue1OnKey.onKey(editValue1, 0, null);	162	editValue1OnKey.onKey(editValue1, 0, null);
163	}	163	}
164		164
165	@Override	165	@Override
166	public void onNothingSelected(AdapterView<?> arg0)	166	public void onNothingSelected(AdapterView<?> arg0)
167	{	167	{
168	/* no-op */	168	/* no-op */
169	}	169	}
170	});	170	});
171		171
172	Button buttonClear =	172	Button buttonClear =
173	(Button) this.findViewById(R.id.temperatures_button_clear);	173	(Button) this.findViewById(R.id.temperatures_button_clear);
174	buttonClear.setOnClickListener(new OnClickListener() {	174	buttonClear.setOnClickListener(new OnClickListener() {
175		175
176	@SuppressWarnings("nls")	176	@SuppressWarnings("nls")
177	@Override	177	@Override
178	public void onClick(View v)	178	public void onClick(View v)
179	{	179	{
180	editValue1.setText("");	180	editValue1.setText("");
181	editValue2.setText("");	181	editValue2.setText("");
182	}	182	}
183	});	183	});
184	}	184	}
185		185
186	/**	186	/**
187	* @param value	187	* @param value
188	* @return	188	* @return
189	*/	189	*/
190	private String getConvertedValue(double value, boolean reverse)	190	private String getConvertedValue(double value, boolean reverse)
191	{	191	{
192	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();	192	int selectedItemPosition1 = this.spinnerUnit1.getSelectedItemPosition();
193	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();	193	int selectedItemPosition2 = this.spinnerUnit2.getSelectedItemPosition();
194	String[] itemArray =	194	String[] itemArray =
195	this.getResources().getStringArray(R.array.temperature_units_values);	195	this.getResources().getStringArray(R.array.temperature_units_values);
196	String selectedItemValue1 = itemArray[selectedItemPosition1];	196	String selectedItemValue1 = itemArray[selectedItemPosition1];
197	String selectedItemValue2 = itemArray[selectedItemPosition2];	197	String selectedItemValue2 = itemArray[selectedItemPosition2];
198		198
199	if (reverse)	199	if (reverse)
200	{	200	{
201	String tmp = selectedItemValue1;	201	String tmp = selectedItemValue1;
202	selectedItemValue1 = selectedItemValue2;	202	selectedItemValue1 = selectedItemValue2;
203	selectedItemValue2 = tmp;	203	selectedItemValue2 = tmp;
204	}	204	}
205		205
206	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);	206	int itemId1 = TemperaturesActivity.valueToId.get(selectedItemValue1);
207	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);	207	int itemId2 = TemperaturesActivity.valueToId.get(selectedItemValue2);
208		208
209	Double newValue = value;	209	Double newValue = value;
210		210
211	this.textOffScale.setVisibility(View.INVISIBLE);	211	this.textOffScale.setVisibility(View.INVISIBLE);
212		212
213	switch (itemId1)	213	switch (itemId1)
214	{	214	{
215	case ITEM_CELSIUS:	215	case ITEM_CELSIUS:
216	switch (itemId2)	216	switch (itemId2)
217	{	217	{
218	case ITEM_FAHRENHEIT:	218	case ITEM_FAHRENHEIT:
219	newValue = new Double(value * 9.0 / 5 + 32);	219	newValue = new Double(value * 9.0 / 5 + 32);
220	break;	220	break;
221		221
222	case ITEM_KELVIN:	222	case ITEM_KELVIN:
223	newValue = new Double(value + 273.15);	223	newValue = new Double(value + 273.15);
224		224
225	if (newValue < 0.0)	225	if (newValue < 0.0)
226	{	226	{
227	this.textOffScale.setVisibility(View.VISIBLE);	227	this.textOffScale.setVisibility(View.VISIBLE);
228	return "*" + newValue.toString();	228	return "*" + newValue.toString(); //$NON-NLS-1$
229	}	229	}
230	break;	230	break;
231	}	231	}
232	break;	232	break;
233		233
234	case ITEM_FAHRENHEIT:	234	case ITEM_FAHRENHEIT:
235	switch (itemId2)	235	switch (itemId2)
236	{	236	{
237	case ITEM_CELSIUS:	237	case ITEM_CELSIUS:
238	newValue = new Double((value - 32) * 5.0 / 9);	238	newValue = new Double((value - 32) * 5.0 / 9);
239	break;	239	break;
240		240
241	case ITEM_KELVIN:	241	case ITEM_KELVIN:
242	newValue = new Double((value + 459.67) * 5.0 / 9);	242	newValue = new Double((value + 459.67) * 5.0 / 9);
243		243
244	if (newValue < 0.0)	244	if (newValue < 0.0)
245	{	245	{
246	this.textOffScale.setVisibility(View.VISIBLE);	246	this.textOffScale.setVisibility(View.VISIBLE);
247	return "*" + newValue.toString();	247	return "*" + newValue.toString(); //$NON-NLS-1$
248	}	248	}
249	break;	249	break;
250	}	250	}
251	break;	251	break;
252		252
253	case ITEM_KELVIN:	253	case ITEM_KELVIN:
254	switch (itemId2)	254	switch (itemId2)
255	{	255	{
256	case ITEM_CELSIUS:	256	case ITEM_CELSIUS:
257	newValue = new Double(value - 273.15);	257	newValue = new Double(value - 273.15);
258	break;	258	break;
259		259
260	case ITEM_FAHRENHEIT:	260	case ITEM_FAHRENHEIT:
261	newValue = new Double(value * 9.0 / 5 - 459.67);	261	newValue = new Double(value * 9.0 / 5 - 459.67);
262	break;	262	break;
263	}	263	}
264		264
265	if (value < 0.0)	265	if (value < 0.0)
266	{	266	{
267	this.textOffScale.setVisibility(View.VISIBLE);	267	this.textOffScale.setVisibility(View.VISIBLE);
268	return "*" + newValue.toString();	268	return "*" + newValue.toString(); //$NON-NLS-1$
269	}	269	}
270	break;	270	break;
271	}	271	}
272		272
273	return newValue.toString();	273	return newValue.toString();
274	}	274	}
275	}	275	}
276		276

Subversion Repositories ES

(root)/trunk/src/de/pointedears/converter/app/TemperaturesActivity.java - Rev 13 → 14