Requesting permission in run time in Android

If we are making an app for Android greater than SDK 23, we need to request some sensitive permissions (for example, to write file in external storage) in run time.

Here is a snippet to do so:

if (Build.VERSION.SDK_INT >= 23) {
	if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
			== PackageManager.PERMISSION_GRANTED) {
	} else {

		ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
	}
}