LocationSettingsRequest-Dialogfeld zum Aktivieren von GPS - onActivityResult () übersprungen

Sie müssen dies Ihrem Ergebnisrückruf hinzufügen:

case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
    try {
        fragment.startIntentSenderForResult(status.getResolution().getIntentSender(), REQUEST_CHECK_SETTINGS, null, 0, 0, 0, null);
    } catch (IntentSender.SendIntentException e) {
        // Ignore the error.
    }
    break;

onActivityResult wird für Ihr Fragment aufgerufen. Sie müssen es in Ihrer Aktivität nicht manuell aufrufen. Dies ist im Wesentlichen wie startResolutionForResult funktioniert.

Wenn Sie möchten, dass Ergebnisse zu Ihrem Fragment zurückkehren, verwenden Sie es 

startIntentSenderForResult(status.getResolution().getIntentSender(), REQUEST_CODE_LOCATION_SETTING, null, 0, 0, 0, null);

anstelle von status.startResolutionForResult(YourActivity, LOCATION_REQUEST);

Die oben beschriebene Methode liefert nur das Ergebnis für Ihr Fragment.

Quellcode

https://drive.google.com/open?id=0BzBKpZ4nzNzUOXM2eEhHM3hOZk0

Abhängigkeit in build.gradle-Datei

"com.google.Android.gms: play-services-location: 7.8.0" kompilieren

Erlaubnis in Manifestdatei

<uses-permission Android:name="Android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission Android:name="Android.permission.INTERNET"/>
<uses-permission Android:name="Android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission Android:name="Android.permission.ACCESS_COARSE_LOCATION"/>


package com.keshav.enablelocationwithokcancelbuttoncontrol;

import Android.content.Context;
import Android.location.Address;
import Android.location.Geocoder;
import Android.os.Bundle;
import Android.os.Handler;
import Android.os.Message;
import Android.util.Log;

import Java.io.IOException;
import Java.util.List;
import Java.util.Locale;

public class LocationAddress
{
    private static final String TAG = "LocationAddress";

    public static void getAddressFromLocation(final double latitude, final double longitude,
                                              final Context context, final Handler handler) {
        Thread thread = new Thread() {
            @Override
            public void run() {
                Geocoder geocoder = new Geocoder(context, Locale.getDefault());
                String result = null;
                try {
                    List<Address> addressList = geocoder.getFromLocation(
                            latitude, longitude, 1);
                    if (addressList != null && addressList.size() > 0) {
                        Address address = addressList.get(0);
                        StringBuilder sb = new StringBuilder();
                        for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
                            sb.append(address.getAddressLine(i)).append("\n");
                        }
                        sb.append(address.getLocality()).append("\n");
                        sb.append(address.getPostalCode()).append("\n");
                        sb.append(address.getCountryName());
                        result = sb.toString();
                    }
                } catch (IOException e) {
                    Log.e(TAG, "Unable connect to Geocoder", e);
                } finally {
                    Message message = Message.obtain();
                    message.setTarget(handler);
                    if (result != null) {
                        message.what = 1;
                        Bundle bundle = new Bundle();
                        result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n\nAddress:\n" + result;
                        bundle.putString("address", result);
                        message.setData(bundle);
                    } else {
                        message.what = 1;
                        Bundle bundle = new Bundle();
                        result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n Unable to get address for this lat-long.";
                        bundle.putString("address", result);
                        message.setData(bundle);
                    }
                    message.sendToTarget();
                }
            }
        };
        thread.start();
    }
}

package com.keshav.enablelocationwithokcancelbuttoncontrol;

import Android.app.AlertDialog;
import Android.app.Service;
import Android.content.Context;
import Android.content.DialogInterface;
import Android.content.Intent;
import Android.location.Location;
import Android.location.LocationListener;
import Android.location.LocationManager;
import Android.os.Bundle;
import Android.os.IBinder;
import Android.provider.Settings;
import Android.util.Log;

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 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);

                        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;
    }

    /**
     * Stop using GPS listener
     * Calling this function will stop using GPS in your app
     * */

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

    /**
     * Function to get latitude
     * */

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

        // return latitude
        return latitude;
    }

    /**
     * Function to get longitude
     * */

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

        // return longitude
        return longitude;
    }

    /**
     * Function to check GPS/wifi enabled
     * @return boolean
     * */

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

    /**
     * Function to show settings alert dialog
     * On pressing Settings button will lauch Settings Options
     * */

    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;
    }
}


package com.keshav.enablelocationwithokcancelbuttoncontrol;

import Android.content.Context;
import Android.location.Address;
import Android.location.Geocoder;
import Android.os.Bundle;
import Android.os.Handler;
import Android.os.Message;
import Android.util.Log;

import Java.io.IOException;
import Java.util.List;
import Java.util.Locale;

public class LocationAddress
{
    private static final String TAG = "LocationAddress";

    public static void getAddressFromLocation(final double latitude, final double longitude,
                                              final Context context, final Handler handler) {
        Thread thread = new Thread() {
            @Override
            public void run() {
                Geocoder geocoder = new Geocoder(context, Locale.getDefault());
                String result = null;
                try {
                    List<Address> addressList = geocoder.getFromLocation(
                            latitude, longitude, 1);
                    if (addressList != null && addressList.size() > 0) {
                        Address address = addressList.get(0);
                        StringBuilder sb = new StringBuilder();
                        for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
                            sb.append(address.getAddressLine(i)).append("\n");
                        }
                        sb.append(address.getLocality()).append("\n");
                        sb.append(address.getPostalCode()).append("\n");
                        sb.append(address.getCountryName());
                        result = sb.toString();
                    }
                } catch (IOException e) {
                    Log.e(TAG, "Unable connect to Geocoder", e);
                } finally {
                    Message message = Message.obtain();
                    message.setTarget(handler);
                    if (result != null) {
                        message.what = 1;
                        Bundle bundle = new Bundle();
                        result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n\nAddress:\n" + result;
                        bundle.putString("address", result);
                        message.setData(bundle);
                    } else {
                        message.what = 1;
                        Bundle bundle = new Bundle();
                        result = "Latitude: " + latitude + " Longitude: " + longitude +
                                "\n Unable to get address for this lat-long.";
                        bundle.putString("address", result);
                        message.setData(bundle);
                    }
                    message.sendToTarget();
                }
            }
        };
        thread.start();
    }
}

Ich sehe, dass Sie für den Anforderungscode unterschiedliche Konstanten REQUEST_CHECK_SETTINGS und REQUEST_LOCATION verwenden. Haben sie den gleichen Wert?

Für den Code: final LocationSettingsStates states = LocationSettingsStates.fromIntent(intent);. 
Der obige Code dient dazu, den aktuellen Status der Standorteinstellung (wie Netzwerk, GPS, ... verwenden) nach einer Änderung der Einstellung abzurufen. 
Ich denke, in Ihrem Code sollte es LocationSettingsStates.fromIntent(data); sein, da die intent hier nicht exixst, vielleicht ist es nur ein Tippfehler.

Das Speichern eines Fragmentfelds in einer Aktivität (wie Daniel vorgeschlagen hat) ist nicht oft eine gute Entscheidung. Ich habe es anders gemacht:

public class MainActivity extends Activity implements PlaceFragment.SettingsModifyHandler {

    private static final int LOCATION_SETTINGS_RESULT = 1;
    private OnResultCallback placeCallback;

    ...

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == LOCATION_SETTINGS_RESULT) {
            if (resultCode == Activity.RESULT_OK) {
                placeCallback.resultOk();
            } else {
                placeCallback.resultFail();
            }
        placeCallback = null;
        }
    }

    @Override
    public void handle(IntentSender intentSender, OnResultCallback callback) {
        placeCallback = callback;
        try {
            startIntentSenderForResult(intentSender, LOCATION_SETTINGS_RESULT, null, 0, 0, 0);
        } catch (IntentSender.SendIntentException e) {
            callback.resultFail();
        }
    }
}

public class PlaceFragment extends Fragment {

    private SettingsModifyHandler settingsModifyHandler;

    ...

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        if (context instanceof SettingsModifyHandler) {
            settingsModifyHandler = (SettingsModifyHandler) context;
        } else {
            throw new RuntimeException("Parent activity must implement PlaceFragment.SettingsModifyHandler interface");
        }
    }

    /* Callback from module, where you implemented status.getStatusCode().LocationSettingsStatusCodes.RESOLUTION_REQUIRED case
    (status is instance of com.google.Android.gms.common.api.Status)
    You provide intentSender here through status.getResolution().getIntentSender() */
    @Override
    public void placeLoadError(IntentSender sender) {
        TextView view_text = (TextView) root.findViewById(R.id.text_error);
        TextView view_btn = (TextView) root.findViewById(R.id.btn_reply);

        view_text.setText("Need to change location settings");
        view_btn.setText("Change");
        view_btn.setOnClickListener(v -> {
            settingsModifyHandler.handle(sender, new SettingsModifyHandler.OnResultCallback() {
                @Override
                public void resultOk() {
                    presenter.loadPlace(placeId);
                }

                @Override
                public void resultFail() {
                    ToastUtils.show("You should change location settings!");
                }
            });
        });
    }

    public interface SettingsModifyHandler {
        void handle(IntentSender intentSender, OnResultCallback callback);

        interface OnResultCallback {
            void resultOk();
            void resultFail();
        }
    }
}

Es liegt an allen in den Fragmenten vorhandenen Google-API-Codes. Versuchen Sie Folgendes:.

1.Erstellen Sie einen leeren Konstruktor für Ihre Fragmente.

2.eine oncreate () -Methode vor der onCreateView () ... 

3. Fügen Sie den Google-API-Code in das oncreate () .... ein.

    public mainFragment(){

}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    try {
        buildGoogleApiClient();
        buildLocationSettingsRequest();

        checkLocationSettings();
        mGoogleApiClient.connect();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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