android 对话框中的进度条 (ProgressDialog)

先上效果图：
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[img]http://dl.iteye.com/upload/attachment/0071/4979/18abb476-835a-35ec-acbe-c92c4201f5ff.jpg[/img]
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[img]
[img]http://dl.iteye.com/upload/attachment/0071/4981/a1e67ba0-f3f4-3b95-95c5-1c12cd564344.jpg[/img]
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[img]
[img]http://dl.iteye.com/upload/attachment/0071/4983/2caed2b8-382a-32e9-a880-c50565f83db0.jpg[/img]
[/img]

main.xml:

<?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"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<Button
	android:id="@+id/Button01"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="圆形进度条"/>

<Button
	android:id="@+id/Button02"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="长形进度条"/>
</LinearLayout>

Activity01

package xiaohang.zhimeng;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class Activity01 extends Activity {

	private Button xhButton01, xhButton02;

	int xh_count = 0;
	// 声明进度条对话框
	ProgressDialog my_pDialog;

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

		// 得到按钮对象
		xhButton01 = (Button) findViewById(R.id.Button01);
		xhButton02 = (Button) findViewById(R.id.Button02);

		// 设置xhButton01的事件监听
		xhButton01.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 创建ProgressDialog对象
				my_pDialog = new ProgressDialog(Activity01.this);

				// 设置进度条风格，风格为圆形，旋转的
				my_pDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

				// 设置ProgressDialog 标题
				my_pDialog.setTitle("提示");

				// 设置ProgressDialog提示信息
				my_pDialog.setMessage("这是一个圆形进度条对话框");

				// 设置ProgressDialog标题图标
				my_pDialog.setIcon(R.drawable.img1);

				// 设置ProgressDialog 的进度条是否不明确 false 就是不设置为不明确
				my_pDialog.setIndeterminate(false);

				// 设置ProgressDialog 是否可以按退回键取消
				my_pDialog.setCancelable(true);

				// 设置ProgressDialog 的一个Button
				my_pDialog.setButton("确定", new Bt1DialogListener());

				// 让ProgressDialog显示
				my_pDialog.show();
			}

		});

		// 设置xhButton02的事件监听
		xhButton02.setOnClickListener(new Button.OnClickListener() {

			@Override
			public void onClick(View v) {

				xh_count = 0;

				// 创建ProgressDialog对象
				my_pDialog = new ProgressDialog(Activity01.this);

				// 设置进度条风格，风格为圆形，旋转的
				my_pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

				// 设置ProgressDialog 标题
				my_pDialog.setTitle("提示");

				// 设置ProgressDialog提示信息
				my_pDialog.setMessage("这是一个长形进度条对话框");

				// 设置ProgressDialog标题图标
				my_pDialog.setIcon(R.drawable.img2);

				// 设置ProgressDialog 的进度条是否不明确 false 就是不设置为不明确
				my_pDialog.setIndeterminate(false);

				// 设置ProgressDialog 进度条进度
				my_pDialog.setProgress(100);

				// 设置ProgressDialog 是否可以按退回键取消
				my_pDialog.setCancelable(true);

				// 让ProgressDialog显示
				my_pDialog.show();

				new Thread() {
					@Override
					public void run() {
						try {
							while (xh_count <= 100) {
								// 由线程来控制进度
								my_pDialog.setProgress(xh_count++);
								Thread.sleep(100);
							}
							my_pDialog.cancel();
						} catch (Exception e) {
							my_pDialog.cancel();
						}
					}
				}.start();

			}

		});
	}

	// xhButton01的监听器类
	class Bt1DialogListener implements DialogInterface.OnClickListener {
		@Override
		public void onClick(DialogInterface dialog, int which) {
			// 点击“确定”按钮取消对话框
			dialog.cancel();
		}
	}
}