这是获取经度和纬度的源代码,但是如何在Location Listener中实现语句,我是新手,我真的需要帮助,请提供帮助,谢谢.

public class Location extends AppCompatActivity{

LocationManager locationManager=(LocationManager)getSystemService(LOCATION_SERVICE);

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_location);

isLocationEnabled();

}

LocationListener locationListenerGPS=new LocationListener() {

@Override

public void onLocationChanged(android.location.Location location) {

double latitude=location.getLatitude();

double longitude=location.getLongitude();

String msg="New Latitude: "+latitude + "New Longitude: "+longitude;

Toast.makeText(getBaseContext(),msg,Toast.LENGTH_LONG).show();

}

@Override

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

}

@Override

public void onProviderEnabled(String provider) {

}

@Override

public void onProviderDisabled(String provider) {

}

};

protected void onResume(){

super.onResume();

isLocationEnabled();

}

private void isLocationEnabled() {

if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){

AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);

alertDialog.setTitle("Enable Location");

alertDialog.setMessage("Your locations setting is not enabled. Please enabled it in settings menu.");

alertDialog.setPositiveButton("Location Settings", new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

Intent intent=new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);

startActivity(intent);

}

});

alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

dialog.cancel();

}

});

AlertDialog alert=alertDialog.create();

alert.show();

}

else{

AlertDialog.Builder alertDialog=new AlertDialog.Builder(this);

alertDialog.setTitle("Confirm Location");

alertDialog.setMessage("Your Location is enabled, please enjoy");

alertDialog.setNegativeButton("Back to interface",new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

dialog.cancel();

}

});

AlertDialog alert=alertDialog.create();

alert.show();

}

}

}

最佳答案

只需使用此代码：

public class Location extends AppCompatActivity {

LocationManager locationManager;

Context mContext;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_location);

mContext=this;

locationManager=(LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);

locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER,

2000,

10, locationListenerGPS);

isLocationEnabled();

}

LocationListener locationListenerGPS=new LocationListener() {

@Override

public void onLocationChanged(android.location.Location location) {

double latitude=location.getLatitude();

double longitude=location.getLongitude();

String msg="New Latitude: "+latitude + "New Longitude: "+longitude;

Toast.makeText(mContext,msg,Toast.LENGTH_LONG).show();

}

@Override

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

}

@Override

public void onProviderEnabled(String provider) {

}

@Override

public void onProviderDisabled(String provider) {

}

};

protected void onResume(){

super.onResume();

isLocationEnabled();

}

private void isLocationEnabled() {

if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){

AlertDialog.Builder alertDialog=new AlertDialog.Builder(mContext);

alertDialog.setTitle("Enable Location");

alertDialog.setMessage("Your locations setting is not enabled. Please enabled it in settings menu.");

alertDialog.setPositiveButton("Location Settings", new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

Intent intent=new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);

startActivity(intent);

}

});

alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

dialog.cancel();

}

});

AlertDialog alert=alertDialog.create();

alert.show();

}

else{

AlertDialog.Builder alertDialog=new AlertDialog.Builder(mContext);

alertDialog.setTitle("Confirm Location");

alertDialog.setMessage("Your Location is enabled, please enjoy");

alertDialog.setNegativeButton("Back to interface",new DialogInterface.OnClickListener(){

public void onClick(DialogInterface dialog, int which){

dialog.cancel();

}

});

AlertDialog alert=alertDialog.create();

alert.show();

}

}

}

The parameters of requestLocationUpdates methods are as follows:

provider: the name of the provider with which we would like to register.

minTime: minimum time interval between location updates (in milliseconds).

minDistance: minimum distance between location updates (in meters).

listener: a LocationListener whose onLocationChanged(Location) method will be called for each location update.

Permissions:

Add above permissions to manifest file for the version lower than lollipop and for marshmallow and higher version use runtime permission.