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據我所知,在啓動應用程序20秒後,我應該在Logcat中看到日誌「鬧鐘」,但沒有發生。我錯過了什麼?Android AlarmManager無法工作
public class MainActivity extends Activity {
private PendingIntent pendingIntent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(MainActivity.this, MainActivity.class);
pendingIntent = PendingIntent.getService(MainActivity.this, 1, intent, 1);
AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
manager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 20000, pendingIntent);
Log.d("alarm", "alarm");
}
}