android响应事件（按钮）的三种方式

方式1 采用匿名内部类方法

   button1.setOnClickListener(new View.OnClickListener()

   {

     @Override

     public void onClick(View arg0) {

          System.out.println("button1 clicked");

        }

   });

 

 

方式2 采用activity实现OnClickListener接口

        public class TaskActivity extends Activity implements ClickListener

    {  

       public void onClick(View arg0)

       {

                 if(arg0==button1)

            System.out.println("button1 clicked");

                       else if (arg0==button2)

                               System.out.println("button2 clicked");

                      ...

                   }

    }

 方式3  修改XML android:onClick 属性

  

  <Button

     android:layout_height="wrap_content"

     android:layout_width="wrap_content"

     android:text="@string/self_destruct"

     android:onClick="selfDestruct" />

     Now, when a user clicks the button, the Android system calls the activity's selfDestruct(View) method. In order for this to work, the method must be public and accept a View as its only parameter. For example:

 

   public void selfDestruct(View arg0) {

       System.out.println("button1 clicked");

   }