Button的点击事件

Button的点击事件

Android1.5测试通过

修改main.xml 布局，添加一个TextView 和一个Button

<?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/show_TextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/Click_Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="点击"
/>
</LinearLayout>

修改strings.xml:

<?xml version="1.0" encoding="UTF-8"?>
<resources>
    <string name="app_name">ButtonApp</string>
    <string name="hello">Hello World!</string>
</resources>

java代码:

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.me.buttonapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

/**
*
* @author LiaoKeCheng<http://hi.baidu.com/wishwingliao>
*/
public class ButtonMainActivity extends Activity
{

    private TextView show;
    private Button press;
    /** Called when the activity is first created. */
    @Override
    public void onCreate( Bundle icicle )
    {
        super.onCreate( icicle );
        // ToDo add your GUI initialization code here
        //获取TextView 和Button 资源
        this.setContentView( R.layout.main );
        this.show = ( TextView ) findViewById( R.id.show_TextView );
        this.press = ( Button ) findViewById( R.id.Click_Button );

        //给Button 添加事件监听器Button.OnClickListener()
        press.setOnClickListener( new Button.OnClickListener()
        {

            @Override
            public void onClick( View v )
            {
                // TODO Auto-generated method stub
            }
        } );

        //处理事件
        press.setOnClickListener( new Button.OnClickListener()
        {

            @Override
            public void onClick( View v )
            {
                show.setText( "Hi , Google Android!" );
            }
        } );
    }
}