Android 在xml布局配置文件中给Button按钮添加事件

【转】http://blog.csdn.net/sky123123/article/details/5954446

在Android里面，添加Listener，具体步骤如下：

1.首先在layout里面定义Button并指定响应的Listener

http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
    android:text="Button01"
    android:id="@+id/Button01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="myClickH1"
    />
    android:text="Button02"
    android:id="@+id/Button02"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:onClick="myClick2"
    />
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />

其中以下这两行就是新增的特性：

android:onClick="myClick1"

android:onClick="myClick2"

2.在活动里面定义public的方法myClick1、和myClick2

 

 

import android.app.Activity;
import android.os.Bundle;
import android.view.View;

public class TestOnClickListener extends Activity {
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       

    }
    public void myClickHandler01(View v){
        setTitle("myClick1");
    }
    public void myClick2(View v){
        setTitle("myClick2");
    }
}

 

 

import android.app.Activity;
import android.os.Bundle;
import android.view.View;

public class TestOnClickListener extends Activity {
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       

    }
    public void myClick1(View v){
        setTitle("myClick1");
    }
    public void myClick2(View v){
        setTitle("myClick2");
    }
}

也可以采用这种写法，将两个按钮设置到同一个Listener 代码如下所示：

android:onClick="onClick"

android:onClick="onClick"

 

import android.app.Activity;
import android.os.Bundle;
import android.view.View;

public class TestOnClickListener extends Activity {
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
    public void myClickHandler(View v){
         switch (v.getId()) {
         case R.id.Button01:
             setTitle("Click1");
             break;
         case R.id.Button2:
             setTitle("Click2");
             break;
         }
    }
}