AlarmManager删除断电所有计划？ [英] AlarmManager delete all schedules on power-off?
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问题描述
我已经设置在特定的时间报警。如果手机关闭闹钟丢失？我已经关掉手机，再次启动，但警报并未在指定时间触发。
的PendingIntent的PendingIntent = PendingIntent.getBroadcast（
Global.a.getApplicationContext（），（INT）cd.e.alarmTime，意图，0）; AlarmManager alarmManager =（AlarmManager）Global.a.getSystemService（Activity.ALARM_SERVICE）;
alarmManager.set（AlarmManager.RTC，cd.e.alarmTime，的PendingIntent）;
解决方案
首先，你需要创建一个广播接收器触发BOOT_COMPLETE
公共类BootReceiver扩展广播接收器{ @覆盖
公共无效的onReceive（最终上下文的背景下，最终的意图意图）{
如果（android.intent.action.BOOT_COMPLETED.equals（intent.getAction（）））{
意图mServiceIntent =新的Intent（）;
mServiceIntent
.setAction（com.crossfire.appname.service.BootService）;
组件名服务= context.startService（mServiceIntent）;
如果（空==服务）{
//东西真的错在这里
Log.e（TAG，无法启动服务）;
}
}其他{
Log.e（TAG，收到意想不到的意图+ intent.toString（））;
}
}
}
然后创建一个服务于所有的报警复位：
公共类BootService延伸服务{ 私人最终字符串标记=BootService; @覆盖
公众的IBinder onBind（最终意向意图）{
返回null;
} @覆盖
公共无效的onCreate（）{
super.onCreate（）;
Trace.i（TAG，创造）;
} @覆盖
公共无效调用onStart（最终意图的意图，最终诠释startId）{
super.onStart（意向，startId）;
Trace.i（TAG，启动）; LoadAlarmsFromDatabase（）; } 私人无效LoadAlarmsFromDatabase（）{
光标C = mDbHelper.getPendingAlarms（）;
如果（c.moveToFirst（））{
做{ INT ID = c.getInt（mDbHelper.ID_COLUMN）;
字符串时间= c.getString（mDbHelper.TIME_COLUMN）;
addNotification（ID，时间）;
}而（c.moveToNext（））;
}
c.close（）;
} 私人无效addNotification（INT apptId，字符串时间）{
Trace.d（TAGaddNotification+ apptId +，+时间）;
意向意图=新意图（BootService.this，
ApptBroadcastReceiver.class）; intent.putExtra（appt_id，Integer.toString（apptId））; 的PendingIntent mAlarmSender = PendingIntent.getBroadcast（
BootService.this，apptId，意向，0）; 长alarmTime = System.currentTimeMillis的（）+ 60000;
日历C = NULL; 尝试{
C = CustomDateUtils.StringToCalendar（时间）;
alarmTime = c.getTimeInMillis（）;
}赶上（ParseException的E）{
Log.e（TAGParseException的）;
} AlarmManager AM =（AlarmManager）getSystemService（ALARM_SERVICE）;
am.set（AlarmManager.RTC_WAKEUP，alarmTime，mAlarmSender）; }
}
最后，添加的权限，并接收到清单
＆LT;使用许可权的android：NAME =android.permission.RECEIVE_BOOT_COMPLETED/＆GT;
＆lt;接收机器人：receiver.BootReceiverNAME =机器人：启用=真正的＆GT;
＆所述;意图滤光器＆gt;
＆lt;作用机器人：名字=android.intent.action.BOOT_COMPLETED＆GT;＆LT; /作用＆gt;
＆所述; /意图滤光器＆gt;
＆LT; /接收器＆GT;
I have set an alarm at specific time. If the phone is turn off the alarm is lost? I have turn off the phone, start it again but the alarm did not trigger at the specified time.
PendingIntent pendingIntent = PendingIntent.getBroadcast(
Global.a.getApplicationContext(), (int) cd.e.alarmTime, intent, 0);
AlarmManager alarmManager = (AlarmManager) Global.a.getSystemService(Activity.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC, cd.e.alarmTime, pendingIntent);
解决方案
First you need to create a BroadcastReceiver to trigger on BOOT_COMPLETE
public class BootReceiver extends BroadcastReceiver {
@Override
public void onReceive(final Context context, final Intent intent) {
if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) {
Intent mServiceIntent = new Intent();
mServiceIntent
.setAction("com.crossfire.appname.service.BootService");
ComponentName service = context.startService(mServiceIntent);
if (null == service) {
// something really wrong here
Log.e(TAG, "Could not start service ");
}
} else {
Log.e(TAG, "Received unexpected intent " + intent.toString());
}
}
}
Then create a service to reset all your alarms:
public class BootService extends Service {
private final String TAG = "BootService";
@Override
public IBinder onBind(final Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
Trace.i(TAG, "created");
}
@Override
public void onStart(final Intent intent, final int startId) {
super.onStart(intent, startId);
Trace.i(TAG, "started");
LoadAlarmsFromDatabase();
}
private void LoadAlarmsFromDatabase() {
Cursor c = mDbHelper.getPendingAlarms();
if (c.moveToFirst()) {
do {
int id = c.getInt(mDbHelper.ID_COLUMN);
String time = c.getString(mDbHelper.TIME_COLUMN);
addNotification(id, time);
} while (c.moveToNext());
}
c.close();
}
private void addNotification(int apptId, String time) {
Trace.d(TAG, "addNotification " + apptId + ", " + time);
Intent intent = new Intent(BootService.this,
ApptBroadcastReceiver.class);
intent.putExtra("appt_id", Integer.toString(apptId));
PendingIntent mAlarmSender = PendingIntent.getBroadcast(
BootService.this, apptId, intent, 0);
long alarmTime = System.currentTimeMillis() + 60000;
Calendar c = null;
try {
c = CustomDateUtils.StringToCalendar(time);
alarmTime = c.getTimeInMillis();
} catch (ParseException e) {
Log.e(TAG, "ParseException");
}
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, alarmTime, mAlarmSender);
}
}
Finally, add the permission and receiver to the manifest
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<receiver android:name=".receiver.BootReceiver" android:enabled="true">
<intent-filter>
<action android:name ="android.intent.action.BOOT_COMPLETED"></action>
</intent-filter>
</receiver>
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