Android中利用LinearLayout继承实现ImageButton

 
原理：通过继承Linearlayout，摆放自己所需的imageview和textview，形成ImageButton

直接上源码：

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1. import android.widget.TextView;  
2.    
3. public class ImageButton1 extends LinearLayout  
4. {  
5.   private ImageView mImage;  
6.   private TextView mText;  
7.    
8.   public ImageButton1(Context context, AttributeSet attrs)  
9.   {  
10.     super(context,attrs);  
11.    
12.     mImage = new ImageView(context,attrs);  
13.     mImage.setPadding(0,0,0,0);  
14.     mText = new TextView(context,attrs);  
15.     //mText.setGravity(android.view.Gravity.CENTER_HORIZONTAL);   
16.   //  mText.setGravity(android.view.Gravity.CENTER_VERTICAL);   
17.     mText.setPadding(0,0,0,0);  
18.      
19.       
20.     setClickable(true);  
21.     setFocusable(true);  
22.     setBackgroundResource(android.R.drawable.btn_default);  
23.     setOrientation(LinearLayout.VERTICAL);  
24.     addView(mImage);  
25.     addView(mText);  
26.   }  
27. }  

import android.widget.TextView; public class ImageButton1 extends LinearLayout{ private ImageView mImage; private TextView mText; public ImageButton1(Context context, AttributeSet attrs) { super(context,attrs); mImage = new ImageView(context,attrs); mImage.setPadding(0,0,0,0); mText = new TextView(context,attrs); //mText.setGravity(android.view.Gravity.CENTER_HORIZONTAL); // mText.setGravity(android.view.Gravity.CENTER_VERTICAL); mText.setPadding(0,0,0,0); setClickable(true); setFocusable(true); setBackgroundResource(android.R.drawable.btn_default); setOrientation(LinearLayout.VERTICAL); addView(mImage); addView(mText); }}

调用自己编写的ImageButton1

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1. <com.test.b.ImageButton1     
2.     android:id="@+id/imbtn01"  
3.     android:layout_width="wrap_content"      
4.     android:layout_height="wrap_content"      
5.     android:src="@drawable/icon"    
6.     android:text="MOAR"    
7.     android:textColor="#ff000000"    
8.     />   

<com.test.b.ImageButton1 android:id="@+id/imbtn01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/icon" android:text="MOAR" android:textColor="#ff000000" />

注意调用ImageButton1时，要用全名：com.test.b.ImageButton1 

效果：button中上图下文字