Android闹钟最终版【android源码闹钟解析】

我以前写了个复杂闹钟的demo，参见 Android闹钟【复杂版】【大明进化十五】 . 但是里面的bug有一些，好多人留言，所以我就看看源码，找找原因？顺便把源码代码整理出来，弄成一个完整的可以运行的apk，今天上午就整理了一下，才发现，源码处理的逻辑多一些，考虑的情况多，比如开机后接收一个广播，然后从数据库中取时间和当前时间对比，设置闹钟，当时区改变了，也会发送广播，对闹钟进行设置的。

转载请标明出处：http://blog.youkuaiyun.com/wdaming1986/article/details/7461043

有人问我：“当设置一个闹钟后，然后调系统时间超过设置的闹钟的时间，这时候闹钟响了？？”

通过源码，我发现这种情况是正常的。不是bug。可以理解。

以下是我发现的几点闹钟中重要的点，分享一下：

（1）在闹钟中有AudioManager管理机制，这个机制可以申请和释放OnAudioFocusChangeListener监听。

还有mTelephonyManager对象，处理在闹钟响的时候，来电铃声的切换。

（2）广播接收闹钟，通过广播启动AlarmKlaxon这个Service，隐式启动service：

public static final String ALARM_INTENT_EXTRA = "intent.extra.alarm";

[java] view plain copy print ?

1. // Play the alarm alert and vibrate the device.
2. Intent playAlarm = new Intent(Alarms.ALARM_ALERT_ACTION);
3. playAlarm.putExtra(Alarms.ALARM_INTENT_EXTRA, alarm);
4. context.startService(playAlarm);

// Play the alarm alert and vibrate the device.
        Intent playAlarm = new Intent(Alarms.ALARM_ALERT_ACTION);
        playAlarm.putExtra(Alarms.ALARM_INTENT_EXTRA, alarm);
        context.startService(playAlarm);

在mainfest中，AlarmKlaxon这个服务的定义如下：

[java] view plain copy print ?

1. <service android:name="AlarmKlaxon"
2. android:description="@string/alarm_klaxon_service_desc"
3. >
4. <intent-filter>
5. <action android:name="com.cn.daming.deskclock.ALARM_ALERT" />
6. </intent-filter>
7. </service>

<service android:name="AlarmKlaxon"
                android:description="@string/alarm_klaxon_service_desc"
                >
            <intent-filter>
                <action android:name="com.cn.daming.deskclock.ALARM_ALERT" />
            </intent-filter>
        </service>

这个service做的是允许别的Activity打断正在响铃的铃声，播放其他的铃声，例如，闹钟响的时候来电话了。

（3）在listview中包含checkbox，这时候闹钟的处理时，activity实现一个OnItemClickListener的监听，点击每一项的监听。然后在checkbox单独拿出去写一个类，继承LinearLayout，重写setPressed（）这个方法，以实现“当点击checkbox的时候不触发parent的click事件”。关键代码如下：

[java] view plain copy print ?

1. <SPAN style="FONT-SIZE: 18px"> @Override
2. public void setPressed(boolean pressed) {
3. // If the parent is pressed, do not set to pressed.
4. if (pressed && ((View) getParent()).isPressed()) {
5. return;
6. }
7. super.setPressed(pressed);
8. }</SPAN>

 @Override
    public void setPressed(boolean pressed) {
        // If the parent is pressed, do not set to pressed.
        if (pressed && ((View) getParent()).isPressed()) {
            return;
        }
        super.setPressed(pressed);
    }

下面看看我的程序截图：

红色圈的图标为我的闹钟。 点击“玲闹钟”后的界面

点击新建闹钟出现的界面 设置好时间弹出的toast。

下面我把我的主要入口类的代码贴出来：

DeskClockMainActivity.java

[java] view plain copy print ?

1. <SPAN style="FONT-SIZE: 18px">package com.cn.daming.deskclock;
3. import java.util.Calendar;
5. import android.app.Activity;
6. import android.app.AlertDialog;
7. import android.content.Context;
8. import android.content.DialogInterface;
9. import android.content.Intent;
10. import android.content.SharedPreferences;
11. import android.database.Cursor;
12. import android.graphics.Typeface;
13. import android.os.Bundle;
14. import android.view.LayoutInflater;
15. import android.view.Menu;
16. import android.view.MenuItem;
17. import android.view.View;
18. import android.view.ContextMenu;
19. import android.view.ContextMenu.ContextMenuInfo;
20. import android.view.View.OnClickListener;
21. import android.view.ViewGroup;
22. import android.widget.AdapterView;
23. import android.widget.AdapterView.AdapterContextMenuInfo;
24. import android.widget.AdapterView.OnItemClickListener;
25. import android.widget.CheckBox;
26. import android.widget.CursorAdapter;
27. import android.widget.ImageButton;
28. import android.widget.ImageView;
29. import android.widget.ListView;
30. import android.widget.TextView;
32. public class DeskClockMainActivity extends Activity implements OnItemClickListener{
34. static final String PREFERENCES = "AlarmClock";
36. /** This must be false for production. If true, turns on logging,
37. test code, etc. */
38. static final boolean DEBUG = false;
40. private SharedPreferences mPrefs;
41. private LayoutInflater mFactory;
42. private ListView mAlarmsList;
43. private Cursor mCursor;
45. @Override
46. public void onCreate(Bundle savedInstanceState) {
47. super.onCreate(savedInstanceState);
49. //取自定义布局的LayoutInflater
50. mFactory = LayoutInflater.from(this);
51. //取getSharedPreferences中key==“AlarmClock”的值
52. mPrefs = getSharedPreferences(PREFERENCES, 0);
53. //获取闹钟的cursor
54. mCursor = Alarms.getAlarmsCursor(getContentResolver());
56. //更新布局界面
57. updateLayout();
59. }
61. //加载更新界面布局
62. private void updateLayout() {
63. setContentView(R.layout.alarm_clock);
64. mAlarmsList = (ListView) findViewById(R.id.alarms_list);
65. AlarmTimeAdapter adapter = new AlarmTimeAdapter(this, mCursor);
66. mAlarmsList.setAdapter(adapter);
67. mAlarmsList.setVerticalScrollBarEnabled(true);
68. mAlarmsList.setOnItemClickListener(this);
69. mAlarmsList.setOnCreateContextMenuListener(this);
71. View addAlarm = findViewById(R.id.add_alarm);
72. addAlarm.setOnClickListener(new View.OnClickListener() {
73. public void onClick(View v) {
74. addNewAlarm();
75. }
76. });
77. // Make the entire view selected when focused.
78. addAlarm.setOnFocusChangeListener(new View.OnFocusChangeListener() {
79. public void onFocusChange(View v, boolean hasFocus) {
80. v.setSelected(hasFocus);
81. }
82. });
84. ImageButton deskClock =
85. (ImageButton) findViewById(R.id.desk_clock_button);
86. deskClock.setOnClickListener(new View.OnClickListener() {
87. public void onClick(View v) {
89. }
90. });
91. }
93. private void addNewAlarm() {
94. startActivity(new Intent(this, SetAlarm.class));
95. }
97. /**
98. * listview的适配器继承CursorAdapter
99. * @author wangxianming
100. * 也可以使用BaseAdapter
101. */
102. private class AlarmTimeAdapter extends CursorAdapter {
103. public AlarmTimeAdapter(Context context, Cursor cursor) {
104. super(context, cursor);
105. }
107. public View newView(Context context, Cursor cursor, ViewGroup parent) {
108. View ret = mFactory.inflate(R.layout.alarm_time, parent, false);
110. DigitalClock digitalClock =
111. (DigitalClock) ret.findViewById(R.id.digitalClock);
112. digitalClock.setLive(false);
113. return ret;
114. }
116. //把view绑定cursor的每一项
117. public void bindView(View view, Context context, Cursor cursor) {
118. final Alarm alarm = new Alarm(cursor);
120. View indicator = view.findViewById(R.id.indicator);
122. // Set the initial resource for the bar image.
123. final ImageView barOnOff =
124. (ImageView) indicator.findViewById(R.id.bar_onoff);
125. barOnOff.setImageResource(alarm.enabled ?
126. R.drawable.ic_indicator_on : R.drawable.ic_indicator_off);
128. // Set the initial state of the clock "checkbox"
129. final CheckBox clockOnOff =
130. (CheckBox) indicator.findViewById(R.id.clock_onoff);
131. clockOnOff.setChecked(alarm.enabled);
133. // Clicking outside the "checkbox" should also change the state.
134. //对checkbox设置监听，使里外一致
135. indicator.setOnClickListener(new OnClickListener() {
136. public void onClick(View v) {
137. clockOnOff.toggle();
138. updateIndicatorAndAlarm(clockOnOff.isChecked(),
139. barOnOff, alarm);
140. }
141. });
143. DigitalClock digitalClock =
144. (DigitalClock) view.findViewById(R.id.digitalClock);
146. // set the alarm text
147. final Calendar c = Calendar.getInstance();
148. c.set(Calendar.HOUR_OF_DAY, alarm.hour);
149. c.set(Calendar.MINUTE, alarm.minutes);
150. digitalClock.updateTime(c);
151. digitalClock.setTypeface(Typeface.DEFAULT);
153. // Set the repeat text or leave it blank if it does not repeat.
154. TextView daysOfWeekView =
155. (TextView) digitalClock.findViewById(R.id.daysOfWeek);
156. final String daysOfWeekStr =
157. alarm.daysOfWeek.toString(DeskClockMainActivity.this, false);
158. if (daysOfWeekStr != null && daysOfWeekStr.length() != 0) {
159. daysOfWeekView.setText(daysOfWeekStr);
160. daysOfWeekView.setVisibility(View.VISIBLE);
161. } else {
162. daysOfWeekView.setVisibility(View.GONE);
163. }
165. // Display the label
166. TextView labelView =
167. (TextView) view.findViewById(R.id.label);
168. if (alarm.label != null && alarm.label.length() != 0) {
169. labelView.setText(alarm.label);
170. labelView.setVisibility(View.VISIBLE);
171. } else {
172. labelView.setVisibility(View.GONE);
173. }
174. }
175. };
177. //更新checkbox
178. private void updateIndicatorAndAlarm(boolean enabled, ImageView bar,
179. Alarm alarm) {
180. bar.setImageResource(enabled ? R.drawable.ic_indicator_on
181. : R.drawable.ic_indicator_off);
182. Alarms.enableAlarm(this, alarm.id, enabled);
183. if (enabled) {
184. SetAlarm.popAlarmSetToast(this, alarm.hour, alarm.minutes,
185. alarm.daysOfWeek);
186. }
187. }
189. /*
190. * (non-Javadoc)
191. * @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
192. * 创建上下文菜单
193. */
194. @Override
195. public boolean onContextItemSelected(final MenuItem item) {
196. final AdapterContextMenuInfo info =
197. (AdapterContextMenuInfo) item.getMenuInfo();
198. final int id = (int) info.id;
199. // Error check just in case.
200. if (id == -1) {
201. return super.onContextItemSelected(item);
202. }
203. switch (item.getItemId()) {
204. case R.id.delete_alarm:
205. // Confirm that the alarm will be deleted.
206. new AlertDialog.Builder(this)
207. .setTitle(getString(R.string.delete_alarm))
208. .setMessage(getString(R.string.delete_alarm_confirm))
209. .setPositiveButton(android.R.string.ok,
210. new DialogInterface.OnClickListener() {
211. public void onClick(DialogInterface d,
212. int w) {
213. Alarms.deleteAlarm(DeskClockMainActivity.this, id);
214. }
215. })
216. .setNegativeButton(android.R.string.cancel, null)
217. .show();
218. return true;
220. case R.id.enable_alarm:
221. final Cursor c = (Cursor) mAlarmsList.getAdapter()
222. .getItem(info.position);
223. final Alarm alarm = new Alarm(c);
224. Alarms.enableAlarm(this, alarm.id, !alarm.enabled);
225. if (!alarm.enabled) {
226. SetAlarm.popAlarmSetToast(this, alarm.hour, alarm.minutes,
227. alarm.daysOfWeek);
228. }
229. return true;
231. case R.id.edit_alarm:
232. Intent intent = new Intent(this, SetAlarm.class);
233. intent.putExtra(Alarms.ALARM_ID, id);
234. startActivity(intent);
235. return true;
237. default:
238. break;
239. }
240. return super.onContextItemSelected(item);
241. }
243. /*
244. * (non-Javadoc)
245. * @see android.app.Activity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
246. * 创建菜单
247. */
248. @Override
249. public void onCreateContextMenu(ContextMenu menu, View view,
250. ContextMenuInfo menuInfo) {
251. // Inflate the menu from xml.
252. getMenuInflater().inflate(R.menu.context_menu, menu);
254. // Use the current item to create a custom view for the header.
255. final AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
256. final Cursor c =
257. (Cursor) mAlarmsList.getAdapter().getItem((int) info.position);
258. final Alarm alarm = new Alarm(c);
260. // Construct the Calendar to compute the time.
261. final Calendar cal = Calendar.getInstance();
262. cal.set(Calendar.HOUR_OF_DAY, alarm.hour);
263. cal.set(Calendar.MINUTE, alarm.minutes);
264. final String time = Alarms.formatTime(this, cal);
266. // Inflate the custom view and set each TextView's text.
267. final View v = mFactory.inflate(R.layout.context_menu_header, null);
268. TextView textView = (TextView) v.findViewById(R.id.header_time);
269. textView.setText(time);
270. textView = (TextView) v.findViewById(R.id.header_label);
271. textView.setText(alarm.label);
273. // Set the custom view on the menu.
274. menu.setHeaderView(v);
275. // Change the text based on the state of the alarm.
276. if (alarm.enabled) {
277. menu.findItem(R.id.enable_alarm).setTitle(R.string.disable_alarm);
278. }
279. }
281. /*
282. * (non-Javadoc)
283. * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
284. * 设置菜单的点击事件的处理
285. */
286. @Override
287. public boolean onOptionsItemSelected(MenuItem item) {
288. switch (item.getItemId()) {
289. case R.id.menu_item_settings:
290. startActivity(new Intent(this, SettingsActivity.class));
291. return true;
292. case R.id.menu_item_desk_clock:
293. //modify by wangxianming in 2012-4-14
294. // startActivity(new Intent(this, DeskClock.class));
295. return true;
296. case R.id.menu_item_add_alarm:
297. addNewAlarm();
298. return true;
299. default:
300. break;
301. }
302. return super.onOptionsItemSelected(item);
303. }
305. /*
306. * (non-Javadoc)
307. * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
308. * 创建菜单
309. */
310. @Override
311. public boolean onCreateOptionsMenu(Menu menu) {
312. getMenuInflater().inflate(R.menu.alarm_list_menu, menu);
313. return super.onCreateOptionsMenu(menu);
314. }
316. /*
317. * (non-Javadoc)
318. * @see android.widget.AdapterView.OnItemClickListener#onItemClick(android.widget.AdapterView, android.view.View, int, long)
319. * 创建菜单的点击事件响应
320. */
321. public void onItemClick(AdapterView<?> adapterView, View v, int pos, long id) {
322. Intent intent = new Intent(this, SetAlarm.class);
323. intent.putExtra(Alarms.ALARM_ID, (int) id);
324. startActivity(intent);
326. }
328. @Override
329. protected void onDestroy() {
330. super.onDestroy();
331. ToastMaster.cancelToast();
332. mCursor.close();
333. }
334. }</SPAN>

package com.cn.daming.deskclock;

import java.util.Calendar;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.CheckBox;
import android.widget.CursorAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class DeskClockMainActivity extends Activity implements OnItemClickListener{
	
    static final String PREFERENCES = "AlarmClock";

    /** This must be false for production.  If true, turns on logging,
        test code, etc. */
    static final boolean DEBUG = false;

    private SharedPreferences mPrefs;
    private LayoutInflater mFactory;
    private ListView mAlarmsList;
    private Cursor mCursor;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        //取自定义布局的LayoutInflater
        mFactory = LayoutInflater.from(this);
        //取getSharedPreferences中key==“AlarmClock”的值
        mPrefs = getSharedPreferences(PREFERENCES, 0);
        //获取闹钟的cursor
        mCursor = Alarms.getAlarmsCursor(getContentResolver());
        
        //更新布局界面
        updateLayout();

    }
    
    //加载更新界面布局
    private void updateLayout() {
    	setContentView(R.layout.alarm_clock);
        mAlarmsList = (ListView) findViewById(R.id.alarms_list);
        AlarmTimeAdapter adapter = new AlarmTimeAdapter(this, mCursor);
        mAlarmsList.setAdapter(adapter);
        mAlarmsList.setVerticalScrollBarEnabled(true);
        mAlarmsList.setOnItemClickListener(this);
        mAlarmsList.setOnCreateContextMenuListener(this);

        View addAlarm = findViewById(R.id.add_alarm);
        addAlarm.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    addNewAlarm();
                }
            });
        // Make the entire view selected when focused.
        addAlarm.setOnFocusChangeListener(new View.OnFocusChangeListener() {
                public void onFocusChange(View v, boolean hasFocus) {
                    v.setSelected(hasFocus);
                }
        });

        ImageButton deskClock =
                (ImageButton) findViewById(R.id.desk_clock_button);
        deskClock.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {
                    
                }
        });
    }
    
    private void addNewAlarm() {
        startActivity(new Intent(this, SetAlarm.class));
    }
    
    /**
     * listview的适配器继承CursorAdapter
     * @author wangxianming
     * 也可以使用BaseAdapter
     */
    private class AlarmTimeAdapter extends CursorAdapter {
        public AlarmTimeAdapter(Context context, Cursor cursor) {
            super(context, cursor);
        }

        public View newView(Context context, Cursor cursor, ViewGroup parent) {
            View ret = mFactory.inflate(R.layout.alarm_time, parent, false);

            DigitalClock digitalClock =
                    (DigitalClock) ret.findViewById(R.id.digitalClock);
            digitalClock.setLive(false);
            return ret;
        }

        //把view绑定cursor的每一项
        public void bindView(View view, Context context, Cursor cursor) {
            final Alarm alarm = new Alarm(cursor);

            View indicator = view.findViewById(R.id.indicator);

            // Set the initial resource for the bar image.
            final ImageView barOnOff =
                    (ImageView) indicator.findViewById(R.id.bar_onoff);
            barOnOff.setImageResource(alarm.enabled ?
                    R.drawable.ic_indicator_on : R.drawable.ic_indicator_off);

            // Set the initial state of the clock "checkbox"
            final CheckBox clockOnOff =
                    (CheckBox) indicator.findViewById(R.id.clock_onoff);
            clockOnOff.setChecked(alarm.enabled);

            // Clicking outside the "checkbox" should also change the state.
            //对checkbox设置监听，使里外一致
            indicator.setOnClickListener(new OnClickListener() {
                    public void onClick(View v) {
                        clockOnOff.toggle();
                        updateIndicatorAndAlarm(clockOnOff.isChecked(),
                                barOnOff, alarm);
                    }
            });

            DigitalClock digitalClock =
                    (DigitalClock) view.findViewById(R.id.digitalClock);

            // set the alarm text
            final Calendar c = Calendar.getInstance();
            c.set(Calendar.HOUR_OF_DAY, alarm.hour);
            c.set(Calendar.MINUTE, alarm.minutes);
            digitalClock.updateTime(c);
            digitalClock.setTypeface(Typeface.DEFAULT);

            // Set the repeat text or leave it blank if it does not repeat.
            TextView daysOfWeekView =
                    (TextView) digitalClock.findViewById(R.id.daysOfWeek);
            final String daysOfWeekStr =
                    alarm.daysOfWeek.toString(DeskClockMainActivity.this, false);
            if (daysOfWeekStr != null && daysOfWeekStr.length() != 0) {
                daysOfWeekView.setText(daysOfWeekStr);
                daysOfWeekView.setVisibility(View.VISIBLE);
            } else {
                daysOfWeekView.setVisibility(View.GONE);
            }

            // Display the label
            TextView labelView =
                    (TextView) view.findViewById(R.id.label);
            if (alarm.label != null && alarm.label.length() != 0) {
                labelView.setText(alarm.label);
                labelView.setVisibility(View.VISIBLE);
            } else {
                labelView.setVisibility(View.GONE);
            }
        }
    };
    
    //更新checkbox
    private void updateIndicatorAndAlarm(boolean enabled, ImageView bar,
            Alarm alarm) {
        bar.setImageResource(enabled ? R.drawable.ic_indicator_on
                : R.drawable.ic_indicator_off);
        Alarms.enableAlarm(this, alarm.id, enabled);
        if (enabled) {
            SetAlarm.popAlarmSetToast(this, alarm.hour, alarm.minutes,
                    alarm.daysOfWeek);
        }
    }
    
    /*
     * (non-Javadoc)
     * @see android.app.Activity#onContextItemSelected(android.view.MenuItem)
     * 创建上下文菜单
     */
    @Override
    public boolean onContextItemSelected(final MenuItem item) {
        final AdapterContextMenuInfo info =
                (AdapterContextMenuInfo) item.getMenuInfo();
        final int id = (int) info.id;
        // Error check just in case.
        if (id == -1) {
            return super.onContextItemSelected(item);
        }
        switch (item.getItemId()) {
            case R.id.delete_alarm:
                // Confirm that the alarm will be deleted.
                new AlertDialog.Builder(this)
                        .setTitle(getString(R.string.delete_alarm))
                        .setMessage(getString(R.string.delete_alarm_confirm))
                        .setPositiveButton(android.R.string.ok,
                                new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface d,
                                            int w) {
                                        Alarms.deleteAlarm(DeskClockMainActivity.this, id);
                                    }
                                })
                        .setNegativeButton(android.R.string.cancel, null)
                        .show();
                return true;

            case R.id.enable_alarm:
                final Cursor c = (Cursor) mAlarmsList.getAdapter()
                        .getItem(info.position);
                final Alarm alarm = new Alarm(c);
                Alarms.enableAlarm(this, alarm.id, !alarm.enabled);
                if (!alarm.enabled) {
                    SetAlarm.popAlarmSetToast(this, alarm.hour, alarm.minutes,
                            alarm.daysOfWeek);
                }
                return true;

            case R.id.edit_alarm:
                Intent intent = new Intent(this, SetAlarm.class);
                intent.putExtra(Alarms.ALARM_ID, id);
                startActivity(intent);
                return true;

            default:
                break;
        }
        return super.onContextItemSelected(item);
    }
    
    /*
     * (non-Javadoc)
     * @see android.app.Activity#onCreateContextMenu(android.view.ContextMenu, android.view.View, android.view.ContextMenu.ContextMenuInfo)
     * 创建菜单
     */
    @Override
    public void onCreateContextMenu(ContextMenu menu, View view,
            ContextMenuInfo menuInfo) {
        // Inflate the menu from xml.
        getMenuInflater().inflate(R.menu.context_menu, menu);

        // Use the current item to create a custom view for the header.
        final AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
        final Cursor c =
                (Cursor) mAlarmsList.getAdapter().getItem((int) info.position);
        final Alarm alarm = new Alarm(c);

        // Construct the Calendar to compute the time.
        final Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, alarm.hour);
        cal.set(Calendar.MINUTE, alarm.minutes);
        final String time = Alarms.formatTime(this, cal);

        // Inflate the custom view and set each TextView's text.
        final View v = mFactory.inflate(R.layout.context_menu_header, null);
        TextView textView = (TextView) v.findViewById(R.id.header_time);
        textView.setText(time);
        textView = (TextView) v.findViewById(R.id.header_label);
        textView.setText(alarm.label);

        // Set the custom view on the menu.
        menu.setHeaderView(v);
        // Change the text based on the state of the alarm.
        if (alarm.enabled) {
            menu.findItem(R.id.enable_alarm).setTitle(R.string.disable_alarm);
        }
    }
    
    /*
     * (non-Javadoc)
     * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem)
     * 设置菜单的点击事件的处理
     */
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_item_settings:
                startActivity(new Intent(this, SettingsActivity.class));
                return true;
            case R.id.menu_item_desk_clock:
            	//modify by wangxianming in 2012-4-14
//                startActivity(new Intent(this, DeskClock.class));
                return true;
            case R.id.menu_item_add_alarm:
                addNewAlarm();
                return true;
            default:
                break;
        }
        return super.onOptionsItemSelected(item);
    }
   
    /*
     * (non-Javadoc)
     * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
     * 创建菜单
     */
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.alarm_list_menu, menu);
        return super.onCreateOptionsMenu(menu);
    }
    
    /*
     * (non-Javadoc)
     * @see android.widget.AdapterView.OnItemClickListener#onItemClick(android.widget.AdapterView, android.view.View, int, long)
     * 创建菜单的点击事件响应
     */
	public void onItemClick(AdapterView<?> adapterView, View v, int pos, long id) {
		Intent intent = new Intent(this, SetAlarm.class);
        intent.putExtra(Alarms.ALARM_ID, (int) id);
        startActivity(intent);
		
	}
	
   @Override
    protected void onDestroy() {
        super.onDestroy();
        ToastMaster.cancelToast();
        mCursor.close();
    }
}

【说明】想要源码的可以留下邮箱，我看到后就给你发过去！

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