我认为这个问题被问了很多次，stackoverflow但仍然有很多人在努力解决它。
在我的 android 应用程序中，我必须每半小时唤醒一次设备以获取当前位置并将其发送到服务器。为此，我使用AlarmManager了setExactAndAllowWhileIdle()方法和WakefulBroadcastReceiver. 它在三星、LG（Nexus）、索尼、松下、联想、摩托罗拉、Micro max 等几乎所有标准/流行设备上都能正常工作....但其他一些设备大多是中国设备不支持或不允许设备唤醒从打盹模式与setExactAndAllowWhileIdle(). 我已经在leeco letV (Android OS 6.1)不允许警报管理器在特定时间间隔唤醒的设备中对其进行了测试。
我在下面提到的代码部分：
UserTrackingReceiverIntentService.java
public class UserTrackingReceiverIntentService extends IntentService {
public static final String TAG = "UserTrackingReceiverIntentService";
Context context;
public UserTrackingReceiverIntentService() {
super("UserTrackingReceiverIntentService");
}
@TargetApi(Build.VERSION_CODES.M)
@Override
protected void onHandleIntent(Intent intent) {
this.context = this;
if (!Util.isMyServiceRunning(LocationService.class, context)) {
context.startService(new Intent(context, LocationService.class));
}
Calendar calendar = Calendar.getInstance();
//********************************** SETTING NEXT ALARM *********************************************
Intent intentWakeFullBroacastReceiver = new Intent(context, SimpleWakefulReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(context, 1001, intentWakeFullBroacastReceiver, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);
if (calendar.get(Calendar.MINUTE) >= 0 && calendar.get(Calendar.MINUTE) < 30) {
calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY));
calendar.set(Calendar.MINUTE, 30);
calendar.set(Calendar.SECOND, 0);
} else if (calendar.get(Calendar.MINUTE) >= 30) {
if (calendar.get(Calendar.HOUR_OF_DAY) == 23) {
calendar.set(Calendar.HOUR_OF_DAY, 0);
calendar.add(Calendar.DAY_OF_MONTH, 1);
} else {
calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY) + 1);
}
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
} else {
calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY));
calendar.set(Calendar.MINUTE, 0);
calendar.set(Calendar.SECOND, 0);
}
//MARSHMALLOW OR ABOVE
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), sender);
}
//LOLLIPOP 21 OR ABOVE
else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
AlarmManager.AlarmClockInfo alarmClockInfo = new AlarmManager.AlarmClockInfo(calendar.getTimeInMillis(), sender);
alarmManager.setAlarmClock(alarmClockInfo, sender);
}
//KITKAT 19 OR ABOVE
else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
alarmManager.setExact(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), sender);
}
//FOR BELOW KITKAT ALL DEVICES
else {
alarmManager.set(AlarmManager.RTC_WAKEUP,
calendar.getTimeInMillis(), sender);
}
Util.registerHeartbeatReceiver(context);
SimpleWakefulReceiver.completeWakefulIntent(intent);
}
}
每次上述服务都会在呼叫后 30 分钟后设置下一个警报。
public class SimpleWakefulReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// This is the Intent to deliver to our service.
Calendar calendar = Calendar.getInstance();
Intent service = new Intent(context, UserTrackingReceiverIntentService.class);
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
String DateTime = sdf.format(date);
DateTime = Util.locatToUTC(DateTime);
service.putExtra("date", String.valueOf(DateTime));
String latitude = Util.ReadSharePrefrence(context, "track_lat");
String longitude = Util.ReadSharePrefrence(context, "track_lng");
service.putExtra("lat", latitude);
service.putExtra("lon", longitude);
Log.i("SimpleWakefulReceiver", "Starting service @ " + calendar.get(Calendar.HOUR_OF_DAY) + " : " + calendar.get(Calendar.MINUTE) + " : " + calendar.get(Calendar.SECOND));
// Start the service, keeping the device awake while it is launching.
startWakefulService(context, service);
}
}
因为我已经从leeco letV设置 > 电池 > 对齐唤醒 > 禁用这两个选项等设备手动更改了一些设置。如果启用电池可以忽略应用程序的强制唤醒。
我的问题：
在这种设备中发生了什么？为什么他们不允许警报在特定时间间隔内触发？
在某些设备中，例如 Gionee 的 plus 警报延迟 2-3 分钟...为什么？
android.net.conn.CONNECTIVITY_CHANGE广播接收器在网络连接发生变化时收听......当它在某些设备（如 Gionee s plus）中不工作时该怎么办？不同制造商的电池优化设置有很多变化......如果是这样的话，它会损害我们应用程序的后台服务吗？然后是什么解决方案。
