在 AndroidManifest.xml 文件中添加以下代码:
在网络请求的代码中,使用 WakefulBroadcastReceiver 来确保设备在执行网络请求时保持唤醒状态:
public class MyWakefulService extends IntentService {
public MyWakefulService() {
super("MyWakefulService");
}
@Override
protected void onHandleIntent(Intent intent) {
PowerManager.WakeLock lock = null;
try {
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
lock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakefulService");
lock.acquire();
//执行网络请求的代码
} finally {
if (lock != null) {
lock.release();
}
}
MyWakefulReceiver.completeWakefulIntent(intent);
}
}
public class MyWakefulReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, MyWakefulService.class);
startWakefulService(context, service);
}
}
在需要执行网络请求的地方,使用以下代码触发 WakefulBroadcastReceiver:
ComponentName receiver = new ComponentName(context, MyWakefulReceiver.class);
PackageManager packageManager = context.getPackageManager();
packageManager.setComponentEnabledSetting(receiver, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
Intent alarmIntent = new Intent(context, MyWakefulReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, alarmIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(ALARM_SERVICE);
alarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 5000, pendingIntent);
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