Thread 와 Handler 테스트

package com.naver.tansanc.test01;

 

import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;

 

public class MainActivity extends Activity {

 

    public TextView textView;

 

 

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.test01);

        textView = (TextView) findViewById(R.id.textview);

    }

 

    public void mOnClick(View v) {

        if (v.getId() == R.id.button) {

           Toast.makeText(this, "Hello", Toast.LENGTH_SHORT).show();

          countThread ct = new countThread(mHandler);

           ct.start();

        } else if (v.getId() == R.id.button2) {

           Toast.makeText(this, "Hello2", Toast.LENGTH_SHORT).show();

        }

    }

    Handler mHandler = new Handler() {

        public void handleMessage(Message msg) {

           switch (msg.what) {

           case 3:

               textView.setText((String) msg.obj);

           }

        }

    };

}

class countThread extends Thread {

    public void run() {

        super.run();

        int i = 0;

        while (true) {

           Message msg = new Message();

           msg.what = 3;

           msg.obj = (Object) ("Hello " + i);

           mHandler.sendMessage(msg);

           try {

               Thread.sleep(1000);

           } catch (InterruptedException e) {

               // TODO Auto-generated catch block

               e.printStackTrace();

           }

           i++;

        }

 

    }

    Handler mHandler;

    countThread(Handler mHandler) {

        this.mHandler = mHandler;

    }

}

Test01.XML

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

 

    <TextView

        android:id="@+id/textview"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

    <Button

        android:id="@+id/button"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:onClick="mOnClick"

        android:text="Hello"/>

    <Button

        android:id="@+id/button2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:onClick="mOnClick"

        android:text="Hello2"/>

 

</LinearLayout>