android ImageButton示例

package com.xiaohang;  

import android.app.Activity;  
import android.app.AlertDialog;  
import android.app.Dialog;  
import android.app.AlertDialog.Builder;  
import android.content.DialogInterface;  
import android.os.Bundle;  
import android.view.View;  
import android.widget.Button;  
import android.widget.ImageButton;  
import android.widget.TextView;  

public class Activity01 extends Activity {  
    /** Called when the activity is first created. */  
    TextView textView;  
    ImageButton imageButton1,imageButton2,imageButton3,imageButton4;  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  

        textView = (TextView)findViewById(R.id.TextView01);  
        imageButton1 = (ImageButton)findViewById(R.id.ImageButton01);  
        imageButton2 = (ImageButton)findViewById(R.id.ImageButton02);  
        imageButton3 = (ImageButton)findViewById(R.id.ImageButton03);  
        imageButton4 = (ImageButton)findViewById(R.id.ImageButton04);  

        //给按钮设置使用的图标,由于button1,button2,button3,已经在xml文件中设置了这里就不设置了  
        imageButton4.setImageDrawable(getResources().getDrawable(android.R.drawable.sym_call_incoming));  

        //以下分别为每个按钮设置事件监听 setOnClickListener  
        imageButton1.setOnClickListener(new Button.OnClickListener(){  
            public void onClick(View v) {  
                //对话框   Builder是AlertDialog的静态内部类  
                Dialog dialog = new AlertDialog.Builder(Activity01.this)  
                //设置对话框的标题  
                    .setTitle("小航提示")  
                //设置对话框要显示的消息  
                    .setMessage("我真的是ImageButton1")  
                //给对话框来个按钮 叫“确定定” ，并且设置监听器 这种写法也真是有些BT  
                    .setPositiveButton("确定定", new DialogInterface.OnClickListener(){  

                        public void onClick(DialogInterface dialog, int which) {  
                            //点击 "确定定" 按钮之后要执行的操作就写在这里  
                        }  
                    }).create();//创建按钮  
                    dialog.show();//显示一把  
            }  
        });  

        imageButton2.setOnClickListener(new Button.OnClickListener(){  
            public void onClick(View v) {  
                Builder dialog = new AlertDialog.Builder(Activity01.this);  
                dialog.setTitle("提示");  
                dialog.setMessage("我是ImageButton2,我要使用ImageButton3的图标");  
                dialog.setPositiveButton("确定", new DialogInterface.OnClickListener(){  
                    public void onClick(DialogInterface dialog, int which) {  
                        //好了我成功把Button3的图标掠夺过来  
                        imageButton2.setImageDrawable(getResources().getDrawable(R.drawable.button3));  
                    }  
                }).create();//创建按钮  
                dialog.show();  
            }  
        });  

        imageButton3.setOnClickListener(new Button.OnClickListener(){  
            public void onClick(View v) {  
                Builder dialog = new AlertDialog.Builder(Activity01.this);  
                dialog.setTitle("提示");  
                dialog.setMessage("我是ImageButton3,我要使用系统打电话图标");  
                dialog.setPositiveButton("确定", new DialogInterface.OnClickListener(){  
                    public void onClick(DialogInterface dialog, int which) {  
                        //把imageButton3的图标设置为系统的打电话图标  
                        imageButton3.setImageDrawable(getResources().getDrawable(android.R.drawable.sym_action_call));  
                    }  
                }).create();//创建按钮  
                dialog.show();  
            }  
        });  

        imageButton4.setOnClickListener(new Button.OnClickListener(){  
            public void onClick(View v) {  
                Builder dialog = new AlertDialog.Builder(Activity01.this);  
                dialog.setTitle("提示");  
                dialog.setMessage("我没钱买图标使用的是系统图标");  
                dialog.setPositiveButton("确定", new DialogInterface.OnClickListener(){  
                    public void onClick(DialogInterface dialog, int which) {  

                    }  
                }).create();//创建按钮  
                dialog.show();  
            }  
        });  
    }  
}

布局文件

<?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" 
    > 
<TextView  
android:id="@+id/TextView01" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello" 
    /> 

<ImageButton 
android:id="@+id/ImageButton01" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:src="@drawable/button1" 
/> 

<ImageButton 
android:id="@+id/ImageButton02" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:src="@drawable/button2" 
/> 

<ImageButton 
android:id="@+id/ImageButton03" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:src="@drawable/button3" 
/> 

<ImageButton 
android:id="@+id/ImageButton04" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"/> 

</LinearLayout>