Android之多线程通讯handler和Message(一)

package com.bvin.test.thread;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MessageActivity extends Activity implements View.OnClickListener{
/** Called when the activity is first created. */
Button bt;
Handler handler = new Handler(){

@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
if(msg.what==0){
Log.e("哈哈", "接收到了消息哦");
}
}

};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
initViews();
}

void initViews(){
bt = (Button)findViewById(R.id.bt);
bt.setOnClickListener(this);

}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v == bt){
//Message msg = new Message();
Message msg = Message.obtain();
msg.what = 0;
handler.sendMessage(msg);
}
}

}