警报管理器和唤醒锁

本文介绍了警报管理器和唤醒锁的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想在我的活动中使用闹钟管理器.我像这样在 main Activity 的 onPause 方法设置了闹钟，

I want to use an alarm manager in my activity. I set up an alarm at the onPause method of main activity like this,

Intent intent= new Intent(namaz_vakti_activity.this, namaz_vakti_activity.class); PendingIntent sender = PendingIntent.getActivity(this, 1234567, intent,Intent.FLAG_ACTIVITY_NEW_TASK); AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); eltime=Calendar.getInstance().getTime().getHours()*60+Calendar.getInstance().getTime().getMinutes(); eltime=(long)(Sun_Rise*60)-eltime; if (eltime<0) eltime=eltime+24*60; eltime=eltime-pre_time; if (eltime<=0) eltime=eltime+24*60; if (uyandirma) { am.set(AlarmManager.RTC_WAKEUP, Calendar.getInstance().getTimeInMillis()+eltime*60000, sender); Toast.makeText(this,"Uyandirma saati "+ConvertTime(Sun_Rise-pre_time/60.0),Toast.LENGTH_SHORT).show(); } else { am.cancel(sender); }

namaz_vakti_activity 是我的主要活动.onPause 和 onResume 方法属于它.

namaz_vakti_activity is my main activity. the onPause and onResume methods belong to it.

我还在 onResume 方法中使用唤醒锁来防止睡眠模式发生.

I also use a wakelock at onResume method to prevent asleep mode to occur.

pm = (PowerManager)this.getSystemService(Context.POWER_SERVICE); wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK |PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE,"namaz_vakti_activity"); wl.acquire();

代码的主要目的是在特定时间再次启动我的主要活动 (namaz_vakti_activitiy).如果设备未处于睡眠模式，则代码运行良好.但是，如果它处于睡眠模式，则会出现错误并停止工作.我认为解决方案很简单，而且我是代码盲.

The main purpose of the code is start my main activity (namaz_vakti_activitiy) again at a specific time. If the device is not in asleep mode the code works well. However if it is in asleep mode it gives an error and stops working. I think the solution is simple, and I am in code blidness.

推荐答案

现在下面的代码完美运行.

Now the below code works perfectly.

• alarmmanager 运行良好.但是，它不在屏幕上，所以我必须使用唤醒锁
• alarmmanager 唤醒了设备(你说得对，黄)，但活动无法获得焦点.所以我必须定义一个新行(Android 2.0 或更高版本支持这些标志:getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

总结代码如下.

public void onCreate(Bundle savedInstanceState) ... getWindow().addFlags( WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD| WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON| WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); ... protected void onResume() ... //pm = (PowerManager)this.getSystemService(Context.POWER_SERVICE); //wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK,"namaz_vakti_activity"); //wl.acquire(); MPX=MediaPlayer.create(this, R.raw.azan1); ... if (eltime==0 && uyandirma && !MPX.isPlaying()) { MPX.setVolume(1,1); MPX.start(); } protected void onPause() ... Intent intent= new Intent(namaz_vakti_activity.this, namaz_vakti_activity.class); PendingIntent sender = PendingIntent.getActivity(this, 1234567, intent,Intent.FLAG_ACTIVITY_NEW_TASK); AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE); eltime=Calendar.getInstance().getTime().getHours()*60+Calendar.getInstance().getTime().getMinutes(); eltime=(long)(Sun_Rise*60)-eltime; if (eltime<0) eltime=eltime+24*60; eltime=eltime-pre_time; if (eltime<=0) eltime=eltime+24*60; if (uyandirma) { am.set(AlarmManager.RTC_WAKEUP, Calendar.getInstance().getTimeInMillis()+eltime*60000, sender); Toast.makeText(this,"Uyandirma saati "+ConvertTime(Sun_Rise-pre_time/60.0),Toast.LENGTH_SHORT).show(); } else { am.cancel(sender); } if (MPX.isPlaying()) { MPX.pause(); MPX.release(); } //if (wl.isHeld()) wl.release();