如何自动启动AlarmManager以启动预定活动？

Question

本教程来自android-er,主要活动(AndroidScheduledActivity.java)重启启动AlarmManager来触发BroadcastReceiver(MyScheduledReceiver.java).在MyScheduledReceiver的onReceive()方法中,它间接启动另一个活动(MyScheduledActivity.java).这样活动(MyScheduledActivity.java)将在预定的时间间隔内启动.现在我会使用AutoStart自动启动,但我无法编写AutoStartNotifyReceiver.请你能告诉我如何管理它吗？非常感谢 !

主要活动,AndroidScheduledActivity.java:

public class AndroidScheduledActivity extends Activity {

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      Button buttonStart = (Button)findViewById(R.id.start);
      buttonStart.setOnClickListener(new Button.OnClickListener(){

  @Override
  public void onClick(View arg0) {
    Intent myIntent = new Intent(getBaseContext(),
      MyScheduledReceiver.class);

    PendingIntent pendingIntent
     = PendingIntent.getBroadcast(getBaseContext(),
       0, myIntent, 0);

    AlarmManager alarmManager
      = (AlarmManager)getSystemService(ALARM_SERVICE);
    Calendar calendar = Calendar.getInstance();
    calendar.setTimeInMillis(System.currentTimeMillis());
    calendar.add(Calendar.SECOND, 10);
    long interval = 60 * 1000; //
    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
      calendar.getTimeInMillis(), interval, pendingIntent);
    finish();
  }});
  }

}

然后是BroadcastReceiver,MyScheduledReceiver.java

public class MyScheduledReceiver extends BroadcastReceiver {

public void onReceive(Context context, Intent intent) {

 Intent scheduledIntent = new Intent(context, MyScheduledActivity.class);
 scheduledIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
 context.startActivity(scheduledIntent);
}
}

和我的问题AutoStartNotifyReceiver:

public class AutoStartNotifyReceiver extends BroadcastReceiver {

 private final String BOOT_COMPLETED_ACTION = "android.intent.action.BOOT_COMPLETED";

 @Override
 public void onReceive(Context context, Intent intent) {

  if(intent.getAction().equals(BOOT_COMPLETED_ACTION)){

????????????????????

  }

 }
}

Answer 1

您的AutoStartNotifyReceiver extends BroadcastReceiver课程在那里,因为当设备重置时警报会被清除.因此,在onReceive这个类(你有问号)中,你需要使用相同的代码(当然没有finish())在第一次使用onClick方法时再次设置警报AndroidScheduledActivity.

然后,您需要将以下条目放入您Manifest的系统中,让系统知道AutoStartNotifyReceiver在系统启动时启动您:

<receiver android:name=".AutoStartNotifyReceiver">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
        </intent-filter>
</receiver>

以及以下许可Manifest:

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

现在,假设您只有一个警报,并且每次只设置一个警报.如果不是这样的话,那会更复杂一些.但根据您提供的小信息,我的解决方案应该做您想要的.

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