public class MainActivity extends AppCompatActivity {
    private double latitude = 0.0;
    private double longitude = 0.0;
    private Button info;
    private LocationManager myLocationManager;
    private Button btRequest;
    private TextView tv_Info;
    private static final int REQUEST_PERMISSION
 
 = 0;

    private int GPS_REQUEST_CODE = 10;

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

    private void init() {
        btRequest = findViewById
 
(R.id.bt_Request);
        info = findViewById(R.id.bt_Info);
        tv_Info = findViewById(R.id.tv_Info);
        myLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    }

    private void myClick() {
        info.setOnClickListener(new View.OnClickListener() {
            @Override
            public
 
 void onClick(View v) {
                PackageManager pkgManager = getPackageManager();
                // 讀寫 sd card 許可權非常重要, android6.0預設禁止的, 建議初始化之前就彈窗讓使用者賦予該許可權
                boolean gpsPermission = pkgManager.checkPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE, getPackageName()) == PackageManager.PERMISSION_GRANTED;
                if (Build.VERSION.SDK_INT >= 23 && !gpsPermission) {
                    requestPermission();
                } else {
                    checkGPSIsStart();
                }
            }
        });
    }

    /**
     * 申請許可權
     */
    private void requestPermission() {
        ActivityCompat.requestPermissions(this,
                new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE,
                        Manifest.permission.READ_PHONE_STATE,
                        Manifest.permission.ACCESS_FINE_LOCATION},
                REQUEST_PERMISSION);
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        //回撥，判斷使用者到底點選是還是否。
        //如果同時申請多個許可權，可以for迴圈遍歷
        if (requestCode == 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            //寫入你需要許可權才能使用的方法
            checkGPSIsStart();
        } else {
            // 沒有獲取 到許可權，從新請求，或者關閉app
            Toast.makeText(this, "需要獲得XXX許可權", Toast.LENGTH_SHORT).show();
            requestPermission();
        }
    }

    /**
     * 判斷當前位置服務是否開啟
     * 如果未開啟進行跳轉到設定服務介面，然後延遲進行獲取經緯度
     * @return
     */
    private void checkGPSIsStart() {
        boolean isOpen = false;
        isOpen = myLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        if (isOpen) {
            getLocation();
        } else {
            //跳轉GPS設定介面
            Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
            startActivityForResult(intent, GPS_REQUEST_CODE);
            new Handler() {
            }.postDelayed(new Runnable() {
                @Override
                public void run() {
                    getLocation();
                }
            }, 2000);
        }
    }

    /**
     * 獲取經緯度進行顯示
     */
    private String getLocation() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return "";
        }
        //查詢到位置服務
        Criteria criteria=new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);//高精度
        criteria.setAltitudeRequired(false);
        criteria.setBearingRequired(false);
        criteria.setCostAllowed(true);
        criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗

        String provider = myLocationManager.getBestProvider(criteria,true); // 獲取GPS資訊

        Location location = myLocationManager.getLastKnownLocation(provider);
        if (location != null) {
            latitude = location.getLatitude();
            longitude = location.getLongitude();
        } else {
            myLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, myLocationListener);
        }
        return "緯度：" + latitude + "\n" + "經度：" + longitude;
    }

    /**
     *獲取GPS位置監聽器，包含四個不同觸發方式
     */
    LocationListener myLocationListener = new LocationListener() {
        // Provider的狀態在可用、暫時不可用和無服務三個狀態直接切換時觸發此函式
        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        // 當位置獲取（GPS）開啟時呼叫此方法
        @Override
        public void onProviderEnabled(String provider) {
            Log.d("執行，GPS的開啟", provider);
        }

        // 當位置獲取（GPS）關閉時呼叫此方法
        @Override
        public void onProviderDisabled(String provider) {
            Log.d("執行，GPS關閉", provider);
        }

        // 當座標改變時觸發此方法，如果獲取到相同座標，它就不會被觸發
        @Override
        public void onLocationChanged(Location location) {
            if (location != null) {
                latitude = location.getLatitude(); // 經度
                longitude = location.getLongitude(); // 緯度
                Log.d("執行，座標發生改變", "Lat: " + location.getLatitude() + " Lng: " + location.getLongitude());
            }
        }
    };
}
 
 遠端門，已上傳git：https://github.com/kyzgxiaoguo/AzGetGPS_master/tree/master