Android 的那些觸摸效果

/** 
     * 觸摸事件 
     */ 
    OnTouchListener onTouchListener = new OnTouchListener() 
    { 
 
        public boolean onTouch(View v, MotionEvent event) { 
            switch (event.getAction()) { 
            case MotionEvent.ACTION_DOWN: 
                v.setBackgroundDrawable(Util.getNinePatchDrawable(R.drawable.button_pressed)); 
                break; 
            case MotionEvent.ACTION_UP: 
                v.setBackgroundDrawable(Util.getNinePatchDrawable(R.drawable.button_normal)); 
                break; 
            case MotionEvent.ACTION_MOVE: 
                break; 
            default: 
                v.setBackgroundDrawable(Util.getNinePatchDrawable(R.drawable.button_normal)); 
                break; 
            } 
            return false; 
        } 
    }; 

當然還有另外一種方式，就是放在xml文件中實現

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
 
    <item android:drawable="@drawable/button_pressed" android:state_selected="true"/> 
    <item android:drawable="@drawable/button_pressed" android:state_focused="true"/> 
    <item android:drawable="@drawable/button_pressed" android:state_pressed="true"/> 
    <item android:drawable="@drawable/button_normal"/> 
 
</selector> 

該文件存放於drawable目錄下

使用時這樣使用：

<Button 
        android:id="@+id/button1" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Button" 
        android:background="@drawable/buttonstyle"  
        /> 

這樣似乎更簡潔

更多Android相關信息見Android 專題頁面 http://www.linuxidc.com/topicnews.aspx?tid=11