Android Toast Custom (特制烤土司)

要如何烤一片特制的烤土司？
最精簡的方法在下面的code
不需要 xml ui
真正的純 java code

src/edu.android.mytoast/MyToast.java

 package edu.android.mytoast;  
 import android.app.Activity;  
 import android.graphics.Color;  
 import android.os.Bundle;  
 import android.view.Gravity;  
 import android.widget.TextView;  
 import android.widget.Toast;  
 public class MyToast extends Activity {  
   /** Called when the activity is first created. */  
   @Override  
   public void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
     TextView tv = new TextView(this);  
     tv.setBackgroundColor(Color.BLACK);  
     tv.setTextColor(Color.RED);  
     tv.setTextSize(50);  
     tv.setPadding(10,10,10,10);  
     tv.setText("自訂Toast");  

     Toast toast = new Toast(this);  
     toast.setView(tv);  
     toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);  
     toast.setDuration(Toast.LENGTH_LONG);      
     toast.show();  
     
   }  
 }  

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