我想在地图上显示位置。但每次我重新安装应用程序时,它都会在我第一次启动应用程序时要求两次位置许可。
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
LatLng googleHeadquater = new LatLng(37.421949, -122.084261);
mMap.addMarker(new MarkerOptions().position(googleHeadquater).title("Google Headquater"));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(googleHeadquater, 16));
//mMap.setOnMyLocationButtonClickListener(this);
enableMyLocation();
}
private void enableMyLocation() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);
} else if (mMap != null) {
// Access to the location
mMap.setMyLocationEnabled(true);
}
}
清单
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
获取位置:
protected synchronized void builGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
@Override
public void onConnected(Bundle bundle ) {
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setFastestInterval(3000); // 3 second
if(ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);
} else {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
在征得许可之后,除非我去另一项活动并回来,否则它不会更新位置。