Android开发之Button事件实现方法的总结

下面介绍Button事件实现的两种方法

main.xml

<?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:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="@string/hello"

/>

<Button

android:id="@+id/myButton1"

android:text=" 按钮1 "

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

<Button

android:id="@+id/myButton2"

android:text=" 按钮2 "

android:layout_width="wrap_content"

android:layout_height="wrap_content"

/>

</LinearLayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

<string name="hello">Hello World, ButtonDemoActivity!</string>

<string name="app_name">ButtonDemo</string>

</resources>

第一种：

ButtonDemoActivity.java

package com.android.ButtonDemo.activity;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class ButtonDemoActivity extends Activity {

Button myButton1,myButton2;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

myButton1=(Button)findViewById(R.id.myButton1);

myButton2=(Button)findViewById(R.id.myButton2);

//使用匿名类注册Button事件

myButton1.setOnClickListener(new OnClickListener()

{

public void onClick(View v)

{

Toast.makeText(ButtonDemoActivity.this, "你点击了按钮1",Toast.LENGTH_LONG).show();

}

});

myButton2.setOnClickListener(new OnClickListener()

{

public void onClick(View v)

{

Toast.makeText(ButtonDemoActivity.this, "你点击了按钮2",Toast.LENGTH_LONG).show();

}

});

}

}

第二种：

ButtonDemoActivity.java

package com.android.ButtonDemo.activity;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class ButtonDemoActivity extends Activity {

Button myButton1,myButton2;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

myButton1=(Button)findViewById(R.id.myButton1);

myButton2=(Button)findViewById(R.id.myButton2);

myButton1.setOnClickListener(new ButtonClick());

myButton2.setOnClickListener(new ButtonClick());

}

//创建一个类，来响应OnClickListener

class ButtonClick implements OnClickListener

{

public void onClick(View v)

{

switch (v.getId()) {

case R.id.myButton1:

Toast.makeText(ButtonDemoActivity.this, "你点击了按钮1",Toast.LENGTH_LONG).show();

break;

case R.id.myButton2:

Toast.makeText(ButtonDemoActivity.this, "你点击了按钮2",Toast.LENGTH_LONG).show();

break;

default:

break;

}

}

}

}