Java cancelAlarm方法不实际取消我的AlarmManager
我使用了堆栈上另一个著名答案中的Java cancelAlarm方法不实际取消我的AlarmManager,java,android,service,alarm,Java,Android,Service,Alarm,我使用了堆栈上另一个著名答案中的cancelAlarm方法,但它没有完成工作,我不知道为什么它不起作用 我有一个活动,其中一个按钮将启动一个警报,该警报将在每个给定的时间间隔发出。然后,我有另一个按钮,将取消报警。以下是第一个按钮: start.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { setupAl
cancelAlarm
方法,但它没有完成工作,我不知道为什么它不起作用
我有一个活动,其中一个按钮将启动一个警报,该警报将在每个给定的时间间隔发出。然后,我有另一个按钮,将取消报警。以下是第一个按钮:
start.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setupAlarm(10);
}
});
stop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try{
cancelAlarm(ALARM_ID);
} catch(Exception e){
Toast.makeText(getApplicationContext(), "ERROR", Toast.LENGTH_SHORT).show();
}
}
});
下面是我的setupAlarm
和cancelAlarm
方法:
private void setupAlarm(int seconds) {
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
Intent i = new Intent(getBaseContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
MainActivity.this, ALARM_ID, i, PendingIntent.FLAG_UPDATE_CURRENT);
Calendar t = Calendar.getInstance();
t.setTimeInMillis(System.currentTimeMillis());
int interval = seconds*1000;
am.setRepeating(AlarmManager.RTC_WAKEUP, t.getTimeInMillis(), interval, pendingIntent);
MainActivity.this.finish();
}
private void cancelAlarm(int alarmId){
Intent i = new Intent(getBaseContext(), AlarmManager.class);
PendingIntent sender = PendingIntent.getBroadcast(MainActivity.this, alarmId, i, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(sender);
sender.cancel();
}
我记得用相同的ID创建另一个报警管理器,然后调用alarmManager.cancel(发送方)在pendingent
上选择code>,但它似乎没有做任何事情,因为我的服务无论如何都会重新启动
报警接收器等级:
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent)
{
Context oAppContext = context.getApplicationContext();
if (oAppContext == null) {
oAppContext = context;
}
Intent serviceIntent = new Intent(oAppContext, MyService.class);
oAppContext.startService(serviceIntent);
}
}
MyService类:
public class MyService extends Service implements SensorEventListener{
private PowerManager.WakeLock wakeLock;
Sensor mSensor;
SensorManager mSensorManager;
String toastString = "";
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate(){
mSensorManager = (SensorManager)getSystemService(SENSOR_SERVICE);
mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
mSensorManager.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_NORMAL);
PowerManager mgr = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
wakeLock = mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakeLock");
wakeLock.acquire();
Toast.makeText(this, "onCreate Successful", Toast.LENGTH_SHORT).show();
}
@Override
public int onStartCommand(Intent intent, int flags, int startid) {
Toast.makeText(this, "onStart Successful", Toast.LENGTH_SHORT).show();
return Service.START_STICKY;
}
@Override
public void onSensorChanged(SensorEvent event) {
//record some data from the accelerometer
quit();
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
private void quit(){
mSensorManager.unregisterListener(MyService.this);
wakeLock.release();
this.stopSelf();
}
}
我的MyService
类不断向我敬酒,告诉我我的onCreate
和onStart
被成功实例化,即使调用了我的cancelAlarm
方法。使用与创建Alarm
时相同的pendingContent
。在意图中使用AlarmReceiver.class
而不是AlarmManager.class
:
Intent i = new Intent(getBaseContext(), AlarmReceiver.class);
更新cancelAlarm()
方法如下:
private void cancelAlarm(int alarmId){
Intent i = new Intent(getBaseContext(), AlarmReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(MainActivity.this, alarmId, i, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(sender);
sender.cancel();
}
希望这会有所帮助~你能发布你的AlarmReceiver代码吗?以及你的MyServiceclass@AndrewEl-Masry添加了bothDo您是否在android清单中注册了广播接收器?为什么在创建时使用ALARM\u ID
,取消时的alarmId
?添加PendingEvent.FLAG\u UPDATE\u CURRENT
是否是此处唯一的更改?如果是这样,我只是测试了它,它没有效果。不,在您的Intent>Intent I=newintent(getBaseContext(),AlarmReceiver.class)中使用AlarmReceiver.class
而不是AlarmManager.class
代码>