Android alarmmanager取消并开始不工作
我有以下代码在主活动开始时设置警报,并在注销时取消Android alarmmanager取消并开始不工作,android,alarmmanager,Android,Alarmmanager,我有以下代码在主活动开始时设置警报,并在注销时取消 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ... // Schedule alarm Intent intent = new Intent(this, MyReceiver.class); alarmIntent = PendingIntent.ge
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
// Schedule alarm
Intent intent = new Intent(this, MyReceiver.class);
alarmIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
if (PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_NO_CREATE) == null) {
alarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME, 0, AlarmManager.INTERVAL_DAY, alarmIntent);
}
}
private void logOut() {
if (alarmManager != null) {
alarmIntent.cancel();
alarmManager.cancel(alarmIntent);
}
Intent i = new Intent(MainActivity.this, LoginActivity.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i);
finish();
}
但当我注销、重新登录并输入主活动时,将永远无法访问代码alarmManager.setInexactRepeating 该行永远不会到达,因为您正在检查的PendingEvent将始终存在,因为您在前面两行创建了该PendingEvent。由于pendingent存在,FLAG_NO_CREATE调用仍将返回它,这将不等于null。这是因为if语句的计算结果为false。根据您的代码,每次点击if块时,您都会有一个带有该请求的PendingEvent实例