安卓点击事件button

java端代码

 1 package com.example.test;

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

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //获得buttonID
        Button button = (Button)findViewById(R.id.myBytton);
        //监听Button
        button.setOnClickListener(new Button.OnClickListener()
        {
            @Override
            public void onClick(View v) {
                //实现显示消息
                DisplayToast("事件触发了");
            }
        });
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
    private void DisplayToast(String string) {
        // TODO Auto-generated method stub
        Toast.makeText(this, string, Toast.LENGTH_LONG).show();
    }
}

 layout代码

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <Button 
        android:id="@+id/myBytton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:text="点我" />
</RelativeLayout>

以上的代码实现的是点击Button事件. 源码下载