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);
  } 

}

如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！