Android UI设计 图片按钮ImageButton用法

图片按钮ImageButton可以把一张图片设为一个按钮，代替Button组件功能，以增加程序美感。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:Android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">

<ImageButton 
android:id="@+id/ib" android:src="@drawable/bookmark_001"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>

</LinearLayout>
   

package com.pocketdigi;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
public class main extends Activity {
    /** Called when the activity is first created. */
    ImageButton ib;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ib=(ImageButton)findViewById(R.id.ib);
        ib.setOnClickListener(ibLis);
    }

    private OnClickListener ibLis=new OnClickListener(){
        @Override
        public void onClick(View v) {
// TODO Auto-generated method stub
       setTitle("图片按钮被点了");
    }};
}