android processbar

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ProgressBar
        android:id="@+id/ProgressBar01"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:visibility="gone" />

    <ProgressBar
        android:id="@+id/ProgressBar02"
        style="?android:attr/progressBarStyleLarge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="50"
        android:secondaryProgress="70"
        android:visibility="gone" />

    <Button
        android:id="@+id/Button01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开始" />

</RelativeLayout>

package com.example.processbardemo;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.ProgressBar;

public class MainActivity extends Activity {

	//声明ProgressBar对象
	private ProgressBar xh_ProgressBar;
	private ProgressBar xh_ProgressBar2;
	private Button xh_Button;
	protected static final int GUI_STOP_NOTIFIER = 0x108;
	protected static final int GUI_THREADING_NOTIFIER = 0x109;
	public int intCounter = 0;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//设置窗口模式，因为需要显示进度条在标题栏
		requestWindowFeature(Window.FEATURE_PROGRESS);
		setProgressBarVisibility(true);
		setContentView(R.layout.activity_main);

		//得到ProgressBar
		xh_ProgressBar = (ProgressBar) findViewById(R.id.ProgressBar01);
		xh_ProgressBar2 = (ProgressBar) findViewById(R.id.ProgressBar02);
		xh_Button = (Button) findViewById(R.id.Button01);

		//设置进度条 不为 不确定模式
		xh_ProgressBar.setIndeterminate(false);
		xh_ProgressBar2.setIndeterminate(false);

		//当按钮按下时开始执行
		xh_Button.setOnClickListener(new Button.OnClickListener() {
			@Override
			public void onClick(View v) {
				//设置ProgressBar为可见状态
				xh_ProgressBar.setVisibility(View.VISIBLE);
				xh_ProgressBar2.setVisibility(View.VISIBLE);
				//设置ProgressBar的最大值
				xh_ProgressBar.setMax(100);
				//设置ProgressBar当前值
				xh_ProgressBar.setProgress(0);
				xh_ProgressBar2.setProgress(0);

				//通过线程来改变ProgressBar的值
				new Thread(new Runnable() {
					@Override
					public void run() {
						for (int i = 0; i < 10; i++) {
							try {
								//设置进度值
								intCounter = (i + 1) * 20;
								//睡眠1000毫秒
								Thread.sleep(1000);

								if (i == 4) {
									Message m = new Message();

									m.what = MainActivity.GUI_STOP_NOTIFIER;
									MainActivity.this.myMessageHandler
											.sendMessage(m);
									break;
								} else {
									Message m = new Message();
									m.what = MainActivity.GUI_THREADING_NOTIFIER;
									MainActivity.this.myMessageHandler
											.sendMessage(m);
								}

							} catch (Exception e) {
								e.printStackTrace();
							}
						}
					}

				}).start();
			}

		});
	}

	Handler myMessageHandler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			//ProgressBar已经是最大值
			case MainActivity.GUI_STOP_NOTIFIER:
				xh_ProgressBar.setVisibility(View.GONE);
				xh_ProgressBar2.setVisibility(View.GONE);
				Thread.currentThread().interrupted();
				break;
			case MainActivity.GUI_THREADING_NOTIFIER:
				if (!Thread.currentThread().isInterrupted()) {
					//改变ProgressBar的当前值
					xh_ProgressBar.setProgress(intCounter);
					xh_ProgressBar2.setProgress(intCounter);

					//设置标题栏中前景的一个进度条进度值
					setProgress(intCounter * 100);
				}
				break;
			}
			super.handleMessage(msg);
		}
	};
}