安卓谷歌地图不工作在棉花糖

Question

我正在应用程序中工作，从中可以检索用户当前位置，到目前为止，应用程序在棒棒糖版本中工作正常，但当我在棉花糖中测试它时，用户位置无法检索。

MainActivity.class

public class MapsActivity extends FragmentActivity implements
        OnMapReadyCallback,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        GoogleMap.OnMarkerDragListener,
        GoogleMap.OnMapLongClickListener,
        View.OnClickListener{
    //Our Map
    private GoogleMap mMap;
    //To store longitude and latitude from map
    private double longitude;
    private double latitude;
    //Buttons
    private ImageButton buttonSave;
    private ImageButton buttonCurrent;
    private ImageButton buttonView;
    //Google ApiClient
    private GoogleApiClient googleApiClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        //Initializing googleapi client
        googleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        //Initializing views and adding onclick listeners
        buttonSave = (ImageButton) findViewById(R.id.buttonSave);
        buttonCurrent = (ImageButton) findViewById(R.id.buttonCurrent);
        buttonView = (ImageButton) findViewById(R.id.buttonView);
        buttonSave.setOnClickListener(this);
        buttonCurrent.setOnClickListener(this);
        buttonView.setOnClickListener(this);
    }
    @Override
    protected void onStart() {
        googleApiClient.connect();
        super.onStart();
    }
    @Override
    protected void onStop() {
        googleApiClient.disconnect();
        super.onStop();
    }
    //Getting current location
    private void getCurrentLocation() {
        mMap.clear();
        //Creating a location object
        Location location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
        if (location != null) {
            //Getting longitude and latitude
            longitude = location.getLongitude();
            latitude = location.getLatitude();
            //moving the map to location
            moveMap();
        }
    }
    //Function to move the map
    private void moveMap() {
        //String to display current latitude and longitude
        String msg = latitude + ", "+longitude;
        //Creating a LatLng Object to store Coordinates
        LatLng latLng = new LatLng(latitude, longitude);
        //Adding marker to map
        mMap.addMarker(new MarkerOptions()
                .position(latLng) //setting position
                .draggable(true) //Making the marker draggable
                .title("Current Location")); //Adding a title
        //Moving the camera
        mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
        //Animating the camera
        mMap.animateCamera(CameraUpdateFactory.zoomTo(15));
        //Displaying current coordinates in toast
        Toast.makeText(this, msg, Toast.LENGTH_LONG).show();
    }
    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;
        LatLng latLng = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(latLng).draggable(true));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
        mMap.setOnMarkerDragListener(this);
        mMap.setOnMapLongClickListener(this);
    }
    @Override
    public void onConnected(Bundle bundle) {
        getCurrentLocation();
    }
    @Override
    public void onConnectionSuspended(int i) {
    }
    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
    }
    @Override
    public void onMapLongClick(LatLng latLng) {
        //Clearing all the markers
        mMap.clear();
        //Adding a new marker to the current pressed position
        mMap.addMarker(new MarkerOptions()
                .position(latLng)
                .draggable(true));
    }
    @Override
    public void onMarkerDragStart(Marker marker) {
    }
    @Override
    public void onMarkerDrag(Marker marker) {
    }
    @Override
    public void onMarkerDragEnd(Marker marker) {
        //Getting the coordinates
        latitude = marker.getPosition().latitude;
        longitude = marker.getPosition().longitude;
        //Moving the map
        moveMap();
    }
    @Override
    public void onClick(View v) {
        if(v == buttonCurrent){
            getCurrentLocation();
            moveMap();
        }
    }
}

Answer 1

将此代码添加到您的MainActivity或HomeActivity

private void fn_permission() {
    if ((ContextCompat.checkSelfPermission(getApplicationContext(),
            Manifest.permission.ACCESS_FINE_LOCATION) !=  PackageManager.PERMISSION_GRANTED)) {
(ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.READ_EXTERNAL_STORAGE)) &&  (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this,
                Manifest.permission.ACCESS_FINE_LOCATION))) {
        } else {
            ActivityCompat.requestPermissions(MainActivity.this, new   String[]{ Manifest.permission.ACCESS_FINE_LOCATION
                    },
                    REQUEST_PERMISSIONS);
        }
    }else {
    }
}