위치권한을 요청하고, GPS 기능까지 켜도록 하는 예제

위치권한을 요청하고, GPS 기능까지 켜도록 하는 예제입니다.

화면의 버튼을 누르면 우선 위치권한을 확인하고 없다면 요청합니다.

사용자가 거부를 누른다면 환경설정에서 위치권한을 바꿀 수 있도록 팝업을 보여줍니다.

위치권한이 허용 상태일때 GPS 기능이 비활성된 상태라면 다시 팝업을 보여주고, 사용자가 OK를 누르면 GPS 기능을 활성화 시킵니다.

전체소스를 아래에 공개합니다.

 

https://youtu.be/MQEogskVkRQ

 

package com.test.locationcheckex;

import android.Manifest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.PackageManager;
import android.location.Location;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;

import com.google.android.gms.common.api.ResolvableApiException;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationCallback;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.LocationSettingsRequest;
import com.google.android.gms.location.LocationSettingsResponse;
import com.google.android.gms.location.SettingsClient;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_PERMISSIONS_REQUEST_CODE = 1981;
    private static final int REQUEST_CODE_LOCATION_SETTINGS = 2981;

    private static final String[] PERMISSIONS = new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION};

    /**
     * Provides access to the Fused Location Provider API.
     */
    private FusedLocationProviderClient mFusedLocationClient;
    /**
     * Provides access to the Location Settings API.
     */
    private SettingsClient mSettingsClient;
    /**
     * Stores parameters for requests to the FusedLocationProviderApi.
     */
    private LocationRequest mLocationRequest;
    /**
     * Callback for Location events.
     */
    private LocationCallback mLocationCallback;

    private LocationSettingsRequest mLocationSettingsRequest;

    private Location mLastLocation;

    private Button btnCheck;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        init();

        btnCheck = (Button) findViewById(R.id.btnCheck);
        btnCheck.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkLocation();
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE_LOCATION_SETTINGS) {
            switch (resultCode) {
                case Activity.RESULT_OK:
                    Toast.makeText(MainActivity.this, "Result OK", Toast.LENGTH_SHORT).show();
                    break;
                case Activity.RESULT_CANCELED:
                    Toast.makeText(MainActivity.this, "Result Cancel", Toast.LENGTH_SHORT).show();
                    break;
                default:
                    break;
            }
        }
    }

    private void init() {
        if (mFusedLocationClient == null) {
            mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
        }

        mSettingsClient = LocationServices.getSettingsClient(this);

        mLocationRequest = new LocationRequest();
        mLocationRequest.setInterval(20 * 1000);
        //mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

        LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
        builder.addLocationRequest(mLocationRequest);
        mLocationSettingsRequest = builder.build();
    }

    private void checkLocation() {
        if (isPermissionGranted()) {
            startLocationUpdates();
        } else {
            requestPermissions();
        }
    }

    private boolean isPermissionGranted() {
        for (String permission : PERMISSIONS) {
            if (permission.equals(Manifest.permission.ACCESS_BACKGROUND_LOCATION) && Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
                continue;
            }
            final int result = ContextCompat.checkSelfPermission(this, permission);

            if (PackageManager.PERMISSION_GRANTED != result) {
                return false;
            }
        }
        return true;
    }

    private void requestPermissions() {
        requestPermissions(PERMISSIONS, REQUEST_PERMISSIONS_REQUEST_CODE);
    }

    private void startLocationUpdates() {
        mSettingsClient.checkLocationSettings(mLocationSettingsRequest).addOnSuccessListener(this, new OnSuccessListener<LocationSettingsResponse>() {
            @SuppressLint("MissingPermission")
            @Override
            public void onSuccess(LocationSettingsResponse locationSettingsResponse) {
            }
        }).addOnFailureListener(this, new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {
                if (e instanceof ResolvableApiException) {
                    resolveLocationSettings(e);
                } else {
                }
            }
        });
    }

    public void resolveLocationSettings(Exception exception) {
        ResolvableApiException resolvable = (ResolvableApiException) exception;
        try {
            resolvable.startResolutionForResult(this, REQUEST_CODE_LOCATION_SETTINGS);
        } catch (IntentSender.SendIntentException e1) {
            e1.printStackTrace();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_PERMISSIONS_REQUEST_CODE) {
            if (grantResults.length <= 0) {
                // If user interaction was interrupted, the permission request is cancelled and you
                // receive empty arrays.
            } else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission granted.
                startLocationUpdates();
            } else {
                // Permission denied.
                for (String permission:permissions) {
                    if ("android.permission.ACCESS_FINE_LOCATION".equals(permission)) {
                        AlertDialog.Builder builder = new AlertDialog.Builder(this);
                        builder.setTitle("알림");
                        builder.setMessage("위치 정보 권한이 필요합니다.\n\n[설정]->[권한]에서 '위치' 항목을 사용으로 설정해 주세요.");
                        builder.setPositiveButton("OK", new DialogInterface.OnClickListener(){
                            @Override
                            public void onClick(DialogInterface dialog, int id)
                            {
                                Intent intent = new Intent();
                                intent.setAction(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                                intent.setData(Uri.fromParts("package", getPackageName(), null));
                                startActivity(intent);
                            }
                        });
                        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener(){
                            @Override
                            public void onClick(DialogInterface dialog, int id)
                            {
                                Toast.makeText(MainActivity.this, "Cancel Click", Toast.LENGTH_SHORT).show();
                            }
                        });
                        AlertDialog alertDialog = builder.create();
                        alertDialog.show();
                    }
                }
            }
        }
    }
}

MainActivity.java

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