Android控件(View)之TextView, Button, ImageButton, ImageView, CheckBox

< !--

ImageButton - 图片按钮控件

-->

< ImageButton android:id="@+id/imageButton"

android:layout_width="wrap_content" android:layout_height="wrap_content">

< /ImageButton>

< /LinearLayout>

_ImageButton.java

代码

package com.webabcd.view;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.ImageButton;

import android.widget.TextView;

public class _ImageButton extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

this.setContentView(R.layout.imagebutton);

setTitle("ImageButton");

ImageButton imgButton = (ImageButton) this.findViewById(R.id.imageButton);

// 设置图片按钮的背景

imgButton.setBackgroundResource(R.drawable.icon01);

// setOnClickListener() - 响应图片按钮的鼠标单击事件

imgButton.setOnClickListener(new Button.OnClickListener(){

@Override

public void onClick(View v) {

TextView txt = (TextView) _ImageButton.this.findViewById(R.id.textView);

txt.setText("图片按钮被单击了");

}

});

}

}

4、ImageView 的 Demo

imageview.xml

代码

< ?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">

< !--

ImageView - 图片显示控件

-->

< ImageView android:id="@+id/imageView"