showAlertDialog helps to show dialog box with custom title,message and OnClickListener

showAlertDialog.java

private void showAlertDialog(String title, String message, String positiveButtonText, String negativeButtonText, DialogInterface.OnClickListener positiveListener, DialogInterface.OnClickListener negativeListener) {
        AlertDialog dialog = new AlertDialog.Builder(CameraPermission.this)
                .setPositiveButton(positiveButtonText, positiveListener)
                .setNegativeButton(negativeButtonText, negativeListener)
                .create();
        if (title != null || !title.isEmpty()) {
            dialog.setTitle(title);
        }
        dialog.setMessage(message);
        dialog.show();
    }