用switch-case一个OnClickListener触发多个button的事件

//在activity_main 中随便放2个button
1.用setTag把button标记为数字，然后用V.getTag（）获取后赋值给key

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

import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

 Button button1,button2;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  button1=(Button) findViewById(R.id.button1);
  button2=(Button) findViewById(R.id.button2);;
  button1.setOnClickListener(new Mytest());
  button1.setTag(1);
  button2.setOnClickListener(new Mytest());
  button2.setTag(2);
 }

 class Mytest implements OnClickListener{
  @Override
  public void onClick(View v) {
   int key=(Integer) v.getTag();
   switch (key) {
   case 1:
    Toast.makeText(MainActivity.this, "button1", 3000).show();
    break;
   case 2:
    Toast.makeText(MainActivity.this, "button2", 3000).show();
    break;

   default:
    break;
   }
  }

 }

}

1.直接获取传进来的button的view,用其getid（）方法直接获取id ，在case后面为button的id，即R.id.button1和R.id.button2

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

import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

 Button button1,button2;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  button1=(Button) findViewById(R.id.button1);
  button2=(Button) findViewById(R.id.button2);;
  button1.setOnClickListener(new Mytest());
  button2.setOnClickListener(new Mytest());
 }

 class Mytest implements OnClickListener{
  @Override
  public void onClick(View v) {
   int key=v.getId();
   switch (key) {
   case R.id.button1:
    Toast.makeText(MainActivity.this, "button1", 3000).show();
    break;
   case R.id.button2:
    Toast.makeText(MainActivity.this, "button2", 3000).show();
    break;

   default:
    break;
   }
  }

 }

}