How to take multiple permission in android at app launch or runtime. | Multiple permission in android.

btnMulti.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        checkPermission();
    }
});

//method

private void checkPermission() {
    if (ActivityCompat.checkSelfPermission(this, permissionsRequired[0]) != PackageManager.PERMISSION_GRANTED ||
            ActivityCompat.checkSelfPermission(this, permissionsRequired[1]) != PackageManager.PERMISSION_GRANTED) {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage("This app needs Camera and Location permissions.");
        builder.setTitle("Need Multiple Permissions");
        builder.setPositiveButton("Grant", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                ActivityCompat.requestPermissions(MultiplePermissionActivity.this, permissionsRequired, 100);
            }
        });

        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        builder.show();
    }
}