package com.google.mcommerce.sample.android.chapter06.handler;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import com.google.mcommerce.sample.android.R;
public class LooperThreadActivity extends Activity {
/** Called when the activity is first created. */
private final int MSG_HELLO = 0;
private Handler mHandler;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.c06_handler_test03);
new CustomThread().start();// 新建并启动CustomThread实例
findViewById(R.id.send_btn).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {// 点击界面时发送消息
String str = "hello";
Log.d("Test", "MainThread is ready to send msg:" + str);
mHandler.obtainMessage(MSG_HELLO, str).sendToTarget();// 发送消息到CustomThread实例
}
});
}
class CustomThread extends Thread {
@Override
public void run() {
// 建立消息循环的步骤
Looper.prepare();// 1、初始化Looper
mHandler = new Handler() {// 2、绑定handler到CustomThread实例的Looper对象
public void handleMessage(Message msg) {// 3、定义处理消息的方法
switch (msg.what) {
case MSG_HELLO:
Log.d("Test", "CustomThread receive msg:"
+ (String) msg.obj);
}
}
};
Looper.loop();// 4、启动消息循环
}
}
}