Java 在应用程序关闭时停止销毁通知
我正在制作一个android应用程序,它允许用户按下一个按钮,并在一定时间内显示一个带有计时器的通知。虽然我已使通知保持不变,因此无法解除通知,但当应用程序关闭时,通知将被销毁 是否有任何方法允许通知在应用程序关闭后继续运行而不会被销毁 以下是启动我的通知和计时器的代码:Java 在应用程序关闭时停止销毁通知,java,android,android-notifications,countdowntimer,Java,Android,Android Notifications,Countdowntimer,我正在制作一个android应用程序,它允许用户按下一个按钮,并在一定时间内显示一个带有计时器的通知。虽然我已使通知保持不变,因此无法解除通知,但当应用程序关闭时,通知将被销毁 是否有任何方法允许通知在应用程序关闭后继续运行而不会被销毁 以下是启动我的通知和计时器的代码: final NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "notifyLemubit")
final NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "notifyLemubit")
.setSmallIcon(holder.img_timer.getImageAlpha())
.setContentTitle("Timer Running")
.setContentText("Time Until Your " + timer.getTimer_name() + " Tree has Fully Grown: " + timer.getTimer_duration_s())
.setOngoing(true)
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
final NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(context);
notificationManagerCompat.notify(timer.getTimer_id(), builder.build());
new CountDownTimer(10 * ONE_SECOND, ONE_SECOND) {
@Override
public void onTick(long ms_until_done) {
builder.setContentText("Time Until Your " + timer.getTimer_name() + " Tree has Fully Grown: " + ms_until_done / ONE_SECOND);
notificationManagerCompat.notify(timer.getTimer_id(), builder.build());
}
@Override
public void onFinish() {
notificationManagerCompat.cancel(timer.getTimer_id());
final NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "notifyLemubit")
.setSmallIcon(holder.img_timer.getImageAlpha())
.setContentTitle("Timer Finished")
.setContentText("Your " + timer.getTimer_name() + " is Fully Grown!")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
final NotificationManagerCompat notificationManagerCompat = NotificationManagerCompat.from(context);
notificationManagerCompat.notify(timer.getTimer_id(), builder.build());
}
}.start();
非常感谢您的帮助,谢谢到目前为止,我所知道的唯一方法是通过扩展
服务
或IntentService
类来使用前台服务
在您的活动或适配器中,使用此选项启动服务
context.startService(Intent(context,PersistentNotificationService.class))
对于这里的服务,使用这个
public class PersistentNotificationService extends Service {
private final static int ONE_SECOND = 1000;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
final NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "notifyLemubit")
.setSmallIcon(R.drawable.img_timer)
.setContentTitle("Timer Running")
.setContentText("Your title goes here")
.setOngoing(true)
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
new CountDownTimer(10 * ONE_SECOND, ONE_SECOND) {
@Override
public void onTick(long ms_until_done) {
// Whatever code you want here
}
@Override
public void onFinish() {
// To cancel , just close the service
stopForeground(true);
stopSelf();
}
}.start();
startForeground(2342, builder.build());
return START_STICKY;
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}