تغییر ظاهر Toast در برنامه

سلام سورسی که من توسعه دادم و جواب هم گرفتم

 package com.boomrangco.generally;

import android.app.Activity;
import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;
import com.boomrangco.fast_order.R;

/**
 * ضzelle‏tirilmi‏ toast mesajlar‎n‎ gِsterilmek üzere tasarlanm‎‏ s‎n‎ft‎r.
 * 
 * @author فsmail KOCACAN
 * 
 */
public class HelperToast {

    private final static int TOAST_LAYOUT_ID_FAIL       = R.layout.toast_fail;
    private final static int TOAST_LAYOUT_ID_SUCCSESS   = R.layout.toast_success;

    private final static int TOAST_ID_TEXTVIEW_SUCCSESS = R.id.toast_message;
    private final static int TOAST_ID_TEXTVIEW_FAIL     = R.id.toast_fail_message;



    /**
     * Ba‏ar‎l‎ bir bir toast mesaj‎ gِsterilmesini saًlar.
     * 
     * @param activity Activity nesnesi.
     * @param message Gِstrilecek olan mesaj metnidir.
     */
    public static void showSuccessToast(Activity activity, String message) {
        LayoutInflater inflater = activity.getLayoutInflater();
        View layout = inflater.inflate(TOAST_LAYOUT_ID_SUCCSESS, (ViewGroup) activity.findViewById(TOAST_ID_TEXTVIEW_SUCCSESS));
        ((TextView) layout.findViewById(TOAST_ID_TEXTVIEW_SUCCSESS)).setText(message);
        Toast toast = new Toast(activity.getApplicationContext());
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.setView(layout);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL, 0, 0);
        //  toast.setMargin(0, 1);
        toast.show();
    }



    /**
     * Ba‏ar‎l‎ bir bir toast mesaj‎ gِsterilmesini saًlar.
     * 
     * @param context Context nesnesi.
     * @param message Gِstrilecek olan mesaj metnidir.
     */
    public static void showSuccessToast(Context context, String message) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(TOAST_LAYOUT_ID_SUCCSESS, null);
        TextView toast_message = (TextView) view.findViewById(TOAST_ID_TEXTVIEW_SUCCSESS);
        toast_message.setText(message);
        Toast toast = new Toast(context);
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.setView(view);
        //toast.setGravity(Gravity.CENTER, Gravity.CENTER_HORIZONTAL, Gravity.CENTER_VERTICAL);
        // toast.setMargin(0, 1);
        toast.show();
    }



    /**
     * Ba‏ar‎s‎z bir toast mesaj‎ gِsterilmesini saًlar.
     * 
     * @param activity Activity nesnesi.
     * @param message Gِstrilecek olan mesaj metnidir.
     */
    public static void showFailToast(Activity activity, String message) {
        LayoutInflater inflater = activity.getLayoutInflater();
        View layout = inflater.inflate(TOAST_LAYOUT_ID_FAIL, (ViewGroup) activity.findViewById(TOAST_ID_TEXTVIEW_FAIL));
        ((TextView) layout.findViewById(TOAST_ID_TEXTVIEW_FAIL)).setText(message);
        Toast toast = new Toast(activity.getApplicationContext());
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.setView(layout);
        //toast.setGravity(Gravity.CENTER, Gravity.CENTER_HORIZONTAL, Gravity.CENTER_VERTICAL);
        //toast.setMargin(0, 1);
        toast.show();
    }



    /**
     * Ba‏ar‎s‎z bir toast mesaj‎ gِsterilmesini saًlar.
     * 
     * @param context Context nesnesi
     * @param message Gِstrilecek olan mesaj metnidir.
     */
    public static void showFailToast(Context context, String message) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(TOAST_LAYOUT_ID_FAIL, null);
        TextView toast_message = (TextView) view.findViewById(TOAST_ID_TEXTVIEW_FAIL);
        toast_message.setText(message);
        Toast toast = new Toast(context);
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.setView(view);
        //toast.setGravity(Gravity.CENTER, Gravity.CENTER_HORIZONTAL, Gravity.CENTER_VERTICAL);
        //toast.setMargin(0, 1);
        toast.show();
    }
}

این هم نحوه فراخوانی

                         HelperToast.showFailToast(G.context, "false");
                HelperToast.showSuccessToast(G.context, "true"));