java - 无法解析 MY_PERMISSION_ACCESS_COURSE_LOCATION

Question

在下面的代码中，我无法解析 if block 内第 11 行的 MY_PERMISSION_ACCESS_COURSE_LOCATION，我检查了所有可能的内容，并在依赖项中编译了 google play 服务，但无法解析:| 我应该怎么办 ？ 我实际上每 5 分钟跟踪一次用户的位置并显示它。 错误是

Error:(60, 41) error: cannot find symbol variable MY_PERMISSION_ACCESS_COURSE_LOCATION

谁能帮帮我吗？

public Location getLocation() {
    try {
        if ( ContextCompat.checkSelfPermission( this, android.Manifest.permission.ACCESS_COARSE_LOCATION )
                != PackageManager.PERMISSION_GRANTED )
        {
            ActivityCompat.requestPermissions( this, new String[]
                    {  android.Manifest.permission.ACCESS_COARSE_LOCATION
                    },
                    LocationServices.MY_PERMISSION_ACCESS_COURSE_LOCATION
            );
            Toast.makeText(GPSTracker.this, "open gps", Toast.LENGTH_SHORT).show();
        }
        Log.i("ok", "outside IF location");
        locationManager = (LocationManager) mContext
                .getSystemService(LOCATION_SERVICE);
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
                10000,   // 3 sec
                10, this);
        // getting GPS status
        isGPSEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);

        // getting network status
        isNetworkEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (!isGPSEnabled && !isNetworkEnabled) {
            // no network provider is enabled
            Toast.makeText(GPSTracker.this, "open it", Toast.LENGTH_SHORT).show();
        }

            this.canGetLocation = true;
            if (isNetworkEnabled) {
                locationManager.requestLocationUpdates(
                        LocationManager.NETWORK_PROVIDER,
                        MIN_TIME_BW_UPDATES,
                        MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                if (locationManager != null) {
                    location = locationManager
                            .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                    if (location != null) {
                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                    }
                }
            }
            // if GPS Enabled get lat/long using GPS Services
            if (isGPSEnabled) {
                if (location == null) {
                    locationManager.requestLocationUpdates(
                            LocationManager.GPS_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

                    if (locationManager != null) {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();

                        }
                    }
                }
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    return location;
}

Answer 1

我只是检查您是否指的是 MY_PERMISSION_ACCESS_COARSE_LOCATION 而不是 MY_PERMISSION_ACCESS_COURSE_LOCATION