Android---Handler多线程通信示例(ProgressBar)

1、修改main.xml文件

[html]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ProgressBar
        style="?android:attr/progressBarStyleHorizontal"
        android:id="@+id/progressBar1"
        android:max="100"
        android:progress="0"
        android:secondaryProgress="0"
        android:visibility="visible"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"></ProgressBar>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ProgressBar
  style="?android:attr/progressBarStyleHorizontal"
  android:id="@+id/progressBar1"
  android:max="100"
  android:progress="0"
  android:secondaryProgress="0"
  android:visibility="visible"
  android:layout_height="wrap_content"
  android:layout_width="match_parent"></ProgressBar>
</LinearLayout>2、声明子线程SonThread.java

[java]
package com.bison;

import android.os.Message;

public class SonThread extends Thread {
    private int i = 0;

    @Override
    public void run() {
        while (i < 100) {
            i = i + 10;
            Message msg = new Message();
            msg.arg1 = i;
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            HandlerTestActivity.myHandler.sendMessage(msg);

        }
        if (i == 100) {
            HandlerTestActivity.myHandler.removeCallbacks(this);
        }
    }
}
package com.bison;

import android.os.Message;

public class SonThread extends Thread {
private int i = 0;

@Override
public void run() {
  while (i < 100) {
   i = i + 10;
   Message msg = new Message();
   msg.arg1 = i;
   try {
    Thread.sleep(1000);
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
   HandlerTestActivity.myHandler.sendMessage(msg);

  }
  if (i == 100) {
   HandlerTestActivity.myHandler.removeCallbacks(this);
  }
}
}3、MainActivity代码

[java]
package com.bison;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ProgressBar;

public class HandlerTestActivity extends Activity {
    private ProgressBar progressBar;
    private SonThread myThread;

    public static Handler myHandler;

    public void init() {
        progressBar = (ProgressBar) findViewById(R.id.progressBar1);
        myThread = new SonThread();
        myThread.start();
        myHandler = new Handler() {

            @Override
            public void handleMessage(Message msg) {

                super.handleMessage(msg);
                progressBar.setProgress(msg.arg1);
            }
        };
    }

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

}
package com.bison;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ProgressBar;

public class HandlerTestActivity extends Activity {
private ProgressBar progressBar;
private SonThread myThread;

public static Handler myHandler;

public void init() {
  progressBar = (ProgressBar) findViewById(R.id.progressBar1);
  myThread = new SonThread();
  myThread.start();
  myHandler = new Handler() {

@Override
public void handleMessage(Message msg) {

    super.handleMessage(msg);
    progressBar.setProgress(msg.arg1);
   }
  };
}

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

补充：移动开发 , Android ,