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我有一個奇怪的問題，我似乎無法弄清楚。如果我在手機上打開地圖應用程序，我幾乎可以馬上得到修復程序，但另一方面，我的應用程序有時需要很長時間才能修復，有時候甚至拒絕徹底修復！我使用FragmentActivity btw。這裏是我的代碼：地圖API V2位置更新需要很長的時間
的onCreate
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setUpMapIfNeeded();
//This keeps the screen On while app is running
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
LocationManager lm = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
// Creating a criteria object to retrieve provider
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setSpeedRequired(false);
// Getting the name of the best provider
String bestProvider = lm.getBestProvider(criteria, true);
// Getting Current Location with GPS
//loc = lm.getLastKnownLocation(lm.GPS_PROVIDER);
//lm.requestLocationUpdates(lm.GPS_PROVIDER, 1000, 1, this);
loc = lm.getLastKnownLocation(bestProvider);
lm.requestLocationUpdates(bestProvider, 1000, 1, this);
Log.d(TAG, "Location " + loc);
broadcastReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent){
Object tmp = intent.getParcelableExtra(ActivityRecognitionService.RECOGNITION_RESULT);
addUpdate((ActivityRecognitionResult)tmp);
}
};
}
正如你可以看到我試着指定GPS作爲提供者，但由於我使用的是手機，只有並沒有真正改變任何事情GPS和Wifi（基本上是一款平板電腦）。忽略廣播接收器的東西那裏仍然是爲動作識別像，散步，In_Vehicle等
setupMapIfNeeded和setupMap
private void setUpMapIfNeeded() {
// TODO Auto-generated method stub
// Do a null check to confirm that we have not already instantiated the map.
if (map == null)
{
// Try to obtain the map from the SupportMapFragment.
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
// Check if we were successful in obtaining the map.
if (map != null)
{
setUpMap();
}
//This is how you register the LocationSource
map.setLocationSource(this);
}
}
/**
* This is where we can add markers or lines, add listeners or move the camera.
* This should only be called once and when we are sure that {@link #mMap} is not null.
*/
private void setUpMap()
{
map.setMyLocationEnabled(true);
map.setOnMapLongClickListener(this);
}
這都是直線前進。
onLocationChangedListener
Override
public void activate(OnLocationChangedListener locationChangedListener) {
// TODO Auto-generated method stub
locListener = locationChangedListener;
}
@Override
public void deactivate() {
// TODO Auto-generated method stub
locListener = null;
}
@Override
public void onLocationChanged(Location loc) {
//Push location updates to the registered listener
//This ensures my-location layer retrieves the new/received location
if (locListener != null) {
locListener.onLocationChanged(loc);
Utils.showInfoMessage(this, "Got a location");
Log.d(TAG, "onLocationChanged");
if(loc.hasSpeed()){
float speed = loc.getSpeed();
Log.d(TAG, "Speed = " + speed);
};
//Animate camera to center of phone location
map.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(loc.getLatitude(), loc.getLongitude())));
// Toast.makeText(getApplicationContext(), "Location Changed",
// Toast.LENGTH_SHORT).show();
}
}
所以，是的，我不知道爲什麼它確實是，但我有一種感覺它得到的東西與我取得在logcat中的所有郵件過濾器這一反覆出現的錯誤。其中一人說：
Service com.android.exchange.ExchangeService has leaked ServiceConnection [email protected]36178 that was originally bound here
而其他這樣說：
java.lang.SecurityException: Permission Denial: get/set setting for user asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL
有人可以幫我嗎？它變得非常令人沮喪，因爲有一天，應用程序似乎在下一個不工作，它將我送上了牆！這也是我的Uni論文！
經過一番測試，我發現「map.setLocationSource（this）;」是這個問題的罪魁禍首。我不明白爲什麼艱難或如何解決它。 –