Android中button的onClick事件几种方法

android中button的onclick事件几种方法

利用三种方法，学习button的监听事件。

方法一源码如下：

package com.example.androidtest; 
 
import android.os.bundle; 
import android.app.activity; 
import android.content.intent; 
import android.view.menu; 
import android.widget.button; 
import android.widget.edittext; 
import android.widget.toast; 
import android.view.view; 
import android.widget.textview;  
import android.view.view.onclicklistener; 
import android.widget.button;  
//import android.text.editable;  
//import android.text.textwatcher;  
import android.widget.edittext; 
 
public class mainactivity extends activity  
{   
  @override 
 protected void oncreate(bundle savedinstancestate) 
  { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 
    button    button1 = (button)findviewbyid(r.id.button1);   
    button    button2 = (button)findviewbyid(r.id.button2);  
    //方法一： 
    //增加事件响应   
    button1.setonclicklistener(new button.onclicklistener() 
    {   
      public void onclick(view v)  
      {         
        intent intent =new intent(); 
        intent.setclass(mainactivity.this, testactivity.class); 
        mainactivity.this.startactivity(intent); 
      }      
    }); 
     
    button2.setonclicklistener(new button.onclicklistener() 
    {   
      public void onclick(view v)  
      {         
        intent intent =new intent(); 
        intent.setclass(mainactivity.this, tactivity.class); 
        mainactivity.this.startactivity(intent); 
      }      
    }); 
  

}   

方法二：

package com.example.androidtest; 
 
import android.os.bundle; 
import android.app.activity; 
import android.content.intent; 
import android.view.menu; 
import android.widget.button; 
import android.widget.edittext; 
import android.widget.toast; 
import android.view.view; 
import android.widget.textview;  
import android.view.view.onclicklistener; 
import android.widget.button;  
//import android.text.editable;  
//import android.text.textwatcher;  
import android.widget.edittext; 
 
public class mainactivity extends activity  
{   
  @override 


  { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 
    button    button1 = (button)findviewbyid(r.id.button1);   
    button    button2 = (button)findviewbyid(r.id.button2);  
  }       
 
  //方法二： 
  public void myclickhandler(view target){  
    switch (target.getid()) {  
    case r.id.button1:   
      intent music=new intent(); 
      music.setclass(mainactivity.this, testactivity.class); 
      mainactivity.this.startactivity(music); 
     // settitle("myclickhandler01");  
      break;  
    case r.id.button2:   
     // settitle("myclickhandler02");  
      intent moive=new intent(); 
      moive.setclass(mainactivity.this, tactivity.class); 
      mainactivity.this.startactivity(moive); 
      break;  
    }  
  } 


} 

方法三：

 package com.example.androidtest; 
 
import android.os.bundle; 
import android.app.activity; 
import android.content.intent; 
import android.view.menu; 
import android.widget.button; 
import android.widget.edittext; 
import android.widget.toast; 
import android.view.view; 
import android.widget.textview;  
import android.view.view.onclicklistener; 
import android.widget.button;  
//import android.text.editable;  
//import android.text.textwatcher;  
import android.widget.edittext; 
 
public class mainactivity extends activity  
{   
  protected void oncreate(bundle savedinstancestate) 
  { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.activity_main); 


    } 
//方法三： 
  public void myclickhandler01(view target){  
    //设置activity的头标题 
    // settitle("myclickhandler01");  
    intent music=new intent(); 
    music.setclass(mainactivity.this, testactivity.class); 
    mainactivity.this.startactivity(music); 
  }  
  public void myclickhandler02(view target){  
    //设置activity的头标题 
   // settitle("myclickhandler02");  
    intent moive=new intent(); 
    moive.setclass(mainactivity.this, tactivity.class); 
    mainactivity.this.startactivity(moive); 
  } 



} 

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