Android笔记之使用LocationManager获取经纬度

LocationManager.getLastKnownLocation(String provider)有可能返回null，概率还挺高

        findViewById(R.id.llMain).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {AndPermission.with(MainActivity.this).runtime().permission(Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION).onGranted(new Action<List<String>>() {@Overridepublic void onAction(List<String> data) {boolean fineLocationPermissionGranted = PermissionChecker.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;boolean coarseLocationPermissionGranted = PermissionChecker.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;if (fineLocationPermissionGranted && coarseLocationPermissionGranted) {LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);if (location == null) {new AlertDialog.Builder(MainActivity.this).setMessage("无法获取位置").show();} else {double longitude = location.getLongitude();double latitude = location.getLatitude();Log.d(TAG, longitude + ", " + latitude);new AlertDialog.Builder(MainActivity.this).setMessage("经度：" + longitude + "\n纬度：" + latitude).show();}}}}).onDenied(new Action<List<String>>() {@Overridepublic void onAction(List<String> data) {new AlertDialog.Builder(MainActivity.this).setMessage("位置权限被拒绝").show();}}).start();}});

以下是通过requestSingleUpdate获取经纬度，不过，LocationManager.requestSingleUpdate是异步的，获取到Location的时间不好控制，如果对经纬度的要求不是必须的，还是建议使用第一种

        findViewById(R.id.btnGetLongitudeAndLatitude).setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {AndPermission.with(MainActivity.this).runtime().permission(Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION).onGranted(new Action<List<String>>() {@Overridepublic void onAction(List<String> data) {boolean fineLocationPermissionGranted = PermissionChecker.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;boolean coarseLocationPermissionGranted = PermissionChecker.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;if (fineLocationPermissionGranted && coarseLocationPermissionGranted) {LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);locationManager.requestSingleUpdate(LocationManager.NETWORK_PROVIDER, new LocationListener() {@Overridepublic void onLocationChanged(Location location) {double longitude = location.getLongitude();double latitude = location.getLatitude();Log.d(TAG, longitude + ", " + latitude);new AlertDialog.Builder(MainActivity.this).setMessage("经度：" + longitude + "\n纬度：" + latitude).show();}@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {}@Overridepublic void onProviderEnabled(String provider) {}@Overridepublic void onProviderDisabled(String provider) {}}, null);} else {new AlertDialog.Builder(MainActivity.this).setMessage("位置权限被拒绝").show();}}}).onDenied(new Action<List<String>>() {@Overridepublic void onAction(List<String> data) {new AlertDialog.Builder(MainActivity.this).setMessage("位置权限被拒绝").show();}}).start();}});