我正在创建一个服务，当活动处于后台以及整个应用程序被销毁时，该服务应该可以工作。
我每隔 1 分钟调用一次服务中的位置坐标。
但是，当我尝试这样做时，该服务会在 12-15 分钟后自动关闭。
我希望该服务能够无休止地工作，直到并且除非它被用户交互活动的完成所破坏。
我的服务类别如下：
public class SensorService extends Service {
public int counter=0;
public static final int NINTY_SECONDS = 90000;
public static Boolean isRunning = false;
public LocationManager mLocationManager;
public Get_Coordinates mLocationListener;
public GetSharedPreference sharedPreference;
@Override
public void onCreate() {
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocationListener = new Get_Coordinates(getApplicationContext());
sharedPreference = new GetSharedPreference(getApplicationContext());
startTimer();
super.onCreate();
}
public SensorService(Context applicationContext) {
super();
Log.i("HERE", "here I am!");
}
public SensorService() {
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
return START_STICKY;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.i("EXIT", "ondestroy!");
Intent broadcastIntent = new Intent("com.android.startBgService");
broadcastIntent.putExtra("abc","abcd");
sendBroadcast(broadcastIntent);
stoptimertask();
}
private Timer timer;
private TimerTask timerTask;
long oldTime=0;
public void startTimer() {
//set a new Timer
timer = new Timer();
//initialize the TimerTask's job
initializeTimerTask();
//schedule the timer, to wake up every 1 second
timer.schedule(timerTask, NINTY_SECONDS, NINTY_SECONDS); //
}
/**
* it sets the timer to print the counter every x seconds
*/
public void initializeTimerTask() {
timerTask = new TimerTask() {
public void run() {
// Log.i("in Etro Sendor", "in timer ++++ "+ (counter++));
if (Check_Internet_Con.isConnectingToInternet(getApplicationContext())) {
if (!isRunning) {
startListening();
}
try {
if (sharedPreference.getActiveUserId() > 0) {
mLocationListener.getLocation();
mLocationListener.insertCoordinatesInSqlite();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
};
}
/**
* not needed
*/
public void stoptimertask() {
//stop the timer, if it's not already null
if (timer != null) {
timer.cancel();
timer = null;
}
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public void startListening() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
if (mLocationManager.getAllProviders().contains(LocationManager.NETWORK_PROVIDER))
mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, mLocationListener, Looper.getMainLooper());
if (mLocationManager.getAllProviders().contains(LocationManager.GPS_PROVIDER))
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, mLocationListener,Looper.getMainLooper());
}
isRunning = true;
}
}
这是我的清单
<service
android:name="com.lunetta.etro.e_tro.SensorService"
android:enabled="true"></service>
<service
android:name="com.lunetta.etro.e_tro.SecondService"
android:enabled="true" >
</service>
<receiver
android:name=".SensorRestarterBroadcastReceiver"
android:enabled="true"
android:exported="true"
android:label="RestartServiceWhenStopped">
<intent-filter>
<action android:name="com.android.startBgService" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
这是 SensorRestarterBroadcastReceiver 类
public class SensorRestarterBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Log.i(SensorRestarterBroadcastReceiver.class.getSimpleName(), "Service Stops! Oooooooooooooppppssssss!!!!");
context.startService(new Intent(context, SensorService.class));
}
}
https://developer.android.com/guide/components/bound-services.html
“绑定服务通常仅在为另一个应用程序组件提供服务时才存在，并且不会无限期地在后台运行。”
要使其无限期地运行，您需要将服务绑定到无限期存在的 UI 组件。您可以使用 Android 通知。这是一个前台服务。
https://developer.android.com/guide/components/services.html#Foreground
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