PermissionUtils 无法解析

Question

我试图在我的应用程序中获取我当前的位置，但PermissionUtils出现错误。这没有得到解决。我从google 的官方 github 教程中得到了代码。public class MapsActivity extends FragmentActivity implements GoogleMap.OnMyLocationButtonClickListener,        GoogleMap.OnMyLocationClickListener,        OnMapReadyCallback,        ActivityCompat.OnRequestPermissionsResultCallback {    /**     * Request code for location permission request.     *     * @see #onRequestPermissionsResult(int, String[], int[])     */    private static final int LOCATION_PERMISSION_REQUEST_CODE = 1;    /**     * Flag indicating whether a requested permission has been denied after returning in     * {@link #onRequestPermissionsResult(int, String[], int[])}.     */    private boolean mPermissionDenied = false;    private GoogleMap mMap;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_maps);        SupportMapFragment mapFragment =                (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);        mapFragment.getMapAsync(this);    }    @Override    public void onMapReady(GoogleMap googleMap) {        mMap = googleMap;        mMap.setOnMyLocationButtonClickListener(this);        mMap.setOnMyLocationClickListener(this);        enableMyLocation();    }    private void enableMyLocation() {        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)                != PackageManager.PERMISSION_GRANTED) {            // Permission to access the location is missing.            PermissionUtils.requestPermission(this, LOCATION_PERMISSION_REQUEST_CODE,                    Manifest.permission.ACCESS_FINE_LOCATION, true);        } else if (mMap != null) {            // Access to the location has been granted to the app.            mMap.setMyLocationEnabled(true);        }    }

Answer 1

您是否在清单中设置了使用权限？如果没有，你应该先设置它。

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

Answer 2

PermissionUtils是示例项目定义的类。如果你想使用它，你必须将它复制到你的项目中。