我有一个IntentService,最初是通过单击按钮启动的:
Intent intent = new Intent(this, ProximityService.class);
intent.putExtra("com.hybris.proxi.triggerTime", 5000l);
PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, 0);
long trigger = System.currentTimeMillis() + (5*1000);
alarmManager.set(AlarmManager.RTC_WAKEUP, trigger, pendingIntent);
这很好用。但后来我试图从intentservice中再次执行相同的intentservice。这里的想法是我可以改变下一个执行时间以节省电池。
@Override
protected void onHandleIntent(Intent intent) {
Log.d("demo", "ProximityService... STARTING");
Log.d("demo", "Intent has extra with key com.hybris.proxi.triggerTime" + intent.hasExtra("com.hybris.proxi.triggerTime"));
long lastTriggerTime = intent.getLongExtra("com.hybris.proxi.triggerTime", -1);
Log.d("demo", "Last trigger time: " + lastTriggerTime);
alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
//trigger me again - TODO change this based on closeness to store
//TODO does not work, somehow triggertime is not incremented
if (lastTriggerTime < 50000)
{
long newTriggerTime = lastTriggerTime * 2;
Intent serviceIntent = new Intent(this, ProximityService.class);
serviceIntent.putExtra("com.hybris.proxi.triggerTime", (long)newTriggerTime);
Log.d("demo","New triggerTime set in new intent is : " + serviceIntent.getLongExtra("com.hybris.proxi.triggerTime", -1));
PendingIntent pendingIntent = PendingIntent.getService(this, 0, serviceIntent, 0);
long trigger = System.currentTimeMillis() + newTriggerTime;
alarmManager.set(AlarmManager.RTC_WAKEUP, trigger, pendingIntent);
Log.d("demo", "Alarm was set with trigger time " + newTriggerTime);
}
else {
Log.d("demo", "Not rescheduling alarm: lastTriggerTime is " + lastTriggerTime);
}
Log.d("demo", "ProximityService... DONE");
}
问题在于
intent.getLongExtra(“com.hybris.proxi.triggerTime”, - 1);
始终返回初始值5000 - 因此下一个警报不会在紧急触发时间内安排。不知何故,为新的触发时间设置额外的意图不起作用......
有什么想法吗?
答案 0 :(得分:10)
您需要使用PendingIntent.FLAG_UPDATE_CURRENT
更改您的代码
PendingIntent pendingIntent = PendingIntent.getService(this, 0, serviceIntent, 0);
到
PendingIntent pendingIntent = PendingIntent.getService(this,
0, serviceIntent, PendingIntent.FLAG_UPDATE_CURRENT);