ImageButton 练习（android）

ImageButton 是就图片按纽，指定一个图片资源，就可以，其它的使用和 Button 是一样的，这里再熟悉一下对话框的使用，代码如下

xml 代码

 

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

    <TextView
        android:layout_width= " fill_parent "
        android:layout_height= " wrap_content "
        android:text= " @string/hello " />
    <ImageButton 
        android:id= " @+id/ib1 "
        android:layout_width= " wrap_content "
        android:layout_height= " wrap_content "
        />
    <ImageButton 
        android:id= " @+id/ib2 "
        android:layout_width= " wrap_content "
        android:layout_height= " wrap_content "
        />
    <ImageButton 
        android:id= " @+id/ib3 "
        android:layout_width= " wrap_content "
        android:layout_height= " wrap_content "
        />
    <ImageButton 
        android:id= " @+id/ib4 "
        android:layout_width= " wrap_content "
        android:layout_height= " wrap_content "
        />
</LinearLayout>

 

java代码

package zziss.android.imagebuttontest;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.Toast;

public  class ImageButtonTestActivity  extends Activity  implements android.view.View.OnClickListener
,android.content.DialogInterface.OnClickListener {
     /**  Called when the activity is first created.  */
    
     private ImageButton ib1 ;
     private ImageButton ib2 ;
     private ImageButton ib3 ;
     private ImageButton ib4 ;
    @Override
     public  void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ib1 = (ImageButton) this.findViewById(R.id.ib1);
        ib2 = (ImageButton) this.findViewById(R.id.ib2);
        ib3 = (ImageButton) this.findViewById(R.id.ib3);
        ib4 = (ImageButton) this.findViewById(R.id.ib4);
        
        ib1.setImageResource(R.drawable.phone);
        ib2.setImageResource(R.drawable.tetris);
        ib3.setImageResource(android.R.drawable.btn_star);
        ib4.setImageResource(android.R.drawable.sym_action_call);
        
        ib1.setOnClickListener( this);
        ib2.setOnClickListener( this);
        ib3.setOnClickListener( this);
        ib4.setOnClickListener( this);
    }
    
    @Override
     public  void onClick(View v) {
         //  TODO Auto-generated method stub
        ImageButton ib = (ImageButton)v;
        AlertDialog dlg =  new AlertDialog.Builder( this)
                .setTitle("按纽点击")
                .setMessage(Integer.toString(ib.getId()))
                .setPositiveButton("确定", this )
                .setNegativeButton("取消", this)
                .create();
        dlg.show();
    }

    @Override
     public  void onClick(DialogInterface dialog,  int which) {
         //  TODO Auto-generated method stub
         if (which == DialogInterface.BUTTON_POSITIVE)
        {
        Toast toast = Toast.makeText( this, "对话框", Toast.LENGTH_LONG);
        toast.show();
        }
         else
        {
        Toast toast = Toast.makeText( this, "对话框222", Toast.LENGTH_LONG);
        toast.show();
        }    
    }
    
    
    
    
}