我創建了一個具有LocationListener的服務。 在片段中,我有一個成功從服務接收位置的BroadcastReceiver。當手機連接到我的電腦時,一切正常,我按了「運行」(不是調試模式)。我可以在Android手機的「運行」控制檯中看到手機屏幕關閉時持續接收位置信息。Android - 位置服務不在後臺運行,僅在連接到計算機時
但是,當我從電腦斷開手機並關閉屏幕時,我停止接收位置更新。或者,在停止之前,我只獲得了一個或兩個位置更新。然後,當再次打開屏幕時,服務開始發送位置更新。
我曾嘗試在片段和服務上使用WakeLock,但它似乎沒有任何效果。
有人可以幫我嗎?!?,(
在我的服務我設置一個包含緯度和時間戳putExtra()一ArrayList->字符串,這樣我可以,如果LocationListener的看沒有更新的位置,當屏幕被鎖定,在該片段中我在視圖中顯示結果,這樣我可以手動調試
這裏是我的服務代碼:。
public class GpsService extends Service {
private LocationListener listener;
private LocationManager locationManager;
private Intent mIntent;
private ArrayList<String> latTimeArrayList = new ArrayList<>();
private PowerManager.WakeLock wakeLock;
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
mIntent = new Intent("location_update");
PowerManager mgr = (PowerManager) getSystemService(Context.POWER_SERVICE);
wakeLock = mgr.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakeLock");
wakeLock.acquire();
return START_NOT_STICKY;
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
listener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
mIntent.putExtra("Latitude", location.getLatitude());
mIntent.putExtra("Longitude", location.getLongitude());
if(latTimeArrayList.size() < 10){
latTimeArrayList.add(location.getLatitude() + " -> " + new Date());
}else if(latTimeArrayList.size() == 10){
mIntent.putExtra("latTimeArray", latTimeArrayList);
}
sendBroadcast(mIntent);
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
};
//noinspection MissingPermission
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 100, 0, listener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 100, 0, listener);
}
@Override
public void onDestroy() {
super.onDestroy();
if(locationManager != null){
//noinspection MissingPermission
locationManager.removeUpdates(listener);
wakeLock.release();
}
}
}
private BroadcastReceiver broadcastReceiver;
ArrayList<String> aString = new ArrayList<>();
private String mmtext = "";
TextView debugtext = (TextView) mView.findViewById(R.id.hasCompletedTrack);
int doagain = 0;
@Override
public void onResume() {
super.onResume();
if(broadcastReceiver == null){
broadcastReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
try{
if (doagain == 0){
aString = (ArrayList<String>)intent.getExtras().get("latTimeArray");
if(aString != null || aString.size() != 0){
for (int i =0; i< aString.size(); i++){
mmtext += aString.get(i) + "\n";
}
doagain = 1;
debugtext.setText(mmtext);
}
}
}catch(NullPointerException e){}