Question

我是android新手，我想获取当前的纬度和经度。我正在使用目标api 23，我正在使用位置管理器，我也添加了检查我的活动类中的权限，但我无法获取当前位置的纬度和经度，请帮助我，并提前感谢这里的完整代码是链接https://github.com/akashmalla07/Google

以下是GPSTracker.java的代码

 public class GPSTracker extends Service implements LocationListener {

private final Context mContext;

// flag for GPS status
boolean isGPSEnabled = false;

// flag for network status
boolean isNetworkEnabled = false;

// flag for GPS status
boolean canGetLocation = false;

Location location; // location
double latitude; // latitude
double longitude; // longitude

// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters

// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute

// Declaring a Location Manager
protected LocationManager locationManager;

public GPSTracker(Context context) {
    this.mContext = context;
    getLocation();
}

public Location getLocation() {
    try {
        locationManager = (LocationManager) mContext
                .getSystemService(LOCATION_SERVICE);

        // 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
        } else {
            this.canGetLocation = true;
            // First get location from Network Provider
            if (isNetworkEnabled) {

                locationManager.requestLocationUpdates(

                        LocationManager.NETWORK_PROVIDER,

                        MIN_TIME_BW_UPDATES,

                        MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

                Log.d("Network", "Network");

                if (locationManager != null) {

                    location = locationManager
                            .getLastKnownLocation
                      (LocationManager.NETWORK_PROVIDER);

                    if (location != null) {

                        latitude = location.getLatitude();

                        longitude = location.getLongitude();

                    }

                }


 if (ActivityCompat.checkSelfPermission(this, 

  Manifest.permission.ACCESS_FINE_LOCATION) != 
   PackageManager.PERMISSION_GRANTED && 
  ActivityCompat.checkSelfPermission(this, 
  Manifest.permission.ACCESS_COARSE_LOCATION) != 
    PackageManager.PERMISSION_GRANTED) {

                    return location ;

                }

            }

            if (isGPSEnabled) {
                if (location == null) {
                    locationManager.requestLocationUpdates(
                            LocationManager.GPS_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("GPS Enabled", "GPS Enabled");
                    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;
}

public void stopUsingGPS(){
    if(locationManager != null){
        locationManager.removeUpdates(GPSTracker.this);
    }
}

public double getLatitude(){
    if(location != null){
        latitude = location.getLatitude();
    }

    // return latitude
    return latitude;
}

public double getLongitude(){
    if(location != null){
        longitude = location.getLongitude();
    }

    // return longitude
    return longitude;
}
public boolean canGetLocation() {
    return this.canGetLocation;
}

public void showSettingsAlert(){
    AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);

    // Setting Dialog Title
    alertDialog.setTitle("GPS is settings");

    // Setting Dialog Message
    alertDialog.setMessage("GPS is not enabled. Do you want to go to 
                          settings menu?");

    // On pressing Settings button
    alertDialog.setPositiveButton("Settings", new 
             DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,int which) {
            Intent intent = new 
        Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            mContext.startActivity(intent);
        }
    });

    // on pressing cancel button
    alertDialog.setNegativeButton("Cancel", new 
       DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });

    // Showing Alert Message
    alertDialog.show();
}

@Override
public void onLocationChanged(Location location) {
}

@Override
public void onProviderDisabled(String provider) {
}

@Override
public void onProviderEnabled(String provider) {
}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}

@Override
public IBinder onBind(Intent arg0) {
    return null;
}

}

Answer 1

您可以先查看文档Making Your App Location-Aware。它在此处说明了如何使用应用中的Google Play services location APIs获取当前位置，定期更新位置以及查找地址。该课程包括示例应用和代码段，您可以将其作为向应用添加位置感知的起点。

Google Play服务位置API也是Android框架位置API的首选，可以为您的应用添加位置感知功能。

检查并浏览更多上述链接，了解更多信息，例如如何检索Android设备的最后已知位置，如何检测和应用位置功能的系统设置，如何请求和接收定期位置更新等。< / p>

请查看此相关的SO问题以获取更多信息和示例代码：

想在android target api 23中获取当前位置的经纬度

1 个答案: