android 主线程与分线程 做同步

直接上代码

package com.example.handlerthreaddemo;



import android.app.Activity;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.Menu;

import android.view.View;



public class MainActivity extends Activity {

    Test t;

    Handler mh=new Handler(){



        @Override

        public void handleMessage(Message msg) {

            String s = (String) msg.obj;

            Bundle data = msg.getData();

            String title = data.getString("title");

            String info = data.getString("info");

            System.out.println("title is " + title + ", info is"

                    + info);

            System.out.println("msg.obj is " + s);

            System.out.println("handlerMessage() is "+Thread.currentThread().getId());

        }

        

    };

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        t=new Test(mh);

        

    }

    public void OnClick(View v){

        switch (v.getId()) {

        case R.id.button1:

            t.send();

            break;



        default:

            break;

        }

        

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.activity_main, menu);

        return true;

    }

}

分线程代码:

package com.example.handlerthreaddemo;



import android.os.Bundle;

import android.os.Handler;

import android.os.HandlerThread;

import android.os.Message;



public class Test {

    HandlerThread mhandlerThread1, mhandlerThread2;

    Handler mhandler1;

    Handler mhandler2;



    public Test(Handler mh) {

        mhandler2=mh;

        mhandlerThread1 = new HandlerThread("update");

        mhandlerThread1.setDaemon(true);

        mhandlerThread1.start();

        mhandler1 = new Handler(mhandlerThread1.getLooper()) {



            @Override

            public void handleMessage(Message msg) {

                String s = (String) msg.obj;

                Bundle data = msg.getData();

                String title = data.getString("title");

                String info = data.getString("info");

                System.out.println("title is " + title + ", info is"

                        + info);

                System.out.println("msg.obj is " + s);

                System.out.println("handlerMessage() is "+Thread.currentThread().getId());

                

                //----------------------------

                Message msg1 = new Message();



                msg1.obj = "abc";



                Bundle data1 = new Bundle();



                data1.putString("title", "你好吗");



                data1.putString("info", "哈哈哈哈");



                msg1.setData(data1);

                mhandler2.sendMessage(msg1);

            }

        };

    }



    public void send() {

        System.out.println("send() is "+Thread.currentThread().getId());

        Message msg = new Message();



        msg.obj = "abc";



        Bundle data = new Bundle();



        data.putString("title", "你好吗");



        data.putString("info", "哈哈哈哈");



        msg.setData(data);

        mhandler1.sendMessage(msg);

        

        // 将msg发送到对象，所谓的目标对象就是生成该msg对象的Handler对象



    }

}

xml文件

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity" >



    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:text="@string/hello_world" />



    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_alignRight="@+id/textView1"

        android:layout_marginRight="16dp"

        android:layout_marginTop="44dp"

        android:text="Button"

        android:onClick="OnClick" />



</RelativeLayout>

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