Android组件 稍等提示（ProgressDialog）

/res/layout/main.xml代码如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <Button
        android:id="@+id/btn_circle"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="圆形进度条" />
    <Button
        android:id="@+id/btn_long"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="长形进度条" />
</LinearLayout>

Java代码如下：

package com.demo.android.progressDialog;

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

public class MainActivity extends Activity {
    private Button btnCircle;
    private Button btnLong;
    private ProgressDialog progressDialog;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        findViews();
    }
    private void findViews() {
        btnCircle=(Button) findViewById(R.id.btn_circle);
        btnCircle.setOnClickListener(btnCircleOnClickListener);
        btnLong=(Button) findViewById(R.id.btn_long);
        btnLong.setOnClickListener(btnLongOnClickListener);
    }
    /**
     * 显示圆形进度条
     */
    private View.OnClickListener btnCircleOnClickListener=new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            progressDialog=new ProgressDialog(MainActivity.this);
            //设置进度条的样式为圆形
            progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
            progressDialog.setTitle("提示");
            progressDialog.setMessage("数据加载中，请稍后....");
            //设置进度条的图标
            progressDialog.setIcon(R.drawable.android);
            //设置进度条是否为不明确
            progressDialog.setIndeterminate(false);
            //设置进度条是否按返回键取消
            progressDialog.setCancelable(true);
            progressDialog.setButton("确定", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    progressDialog.cancel();
                }
            });
            progressDialog.show();
        }
    };
    /**
     * 显示长形进度条
     */
    private View.OnClickListener btnLongOnClickListener=new View.OnClickListener() {
        int count=0;

        @Override
        public void onClick(View v) {
            progressDialog=new ProgressDialog(MainActivity.this);
            progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            progressDialog.setTitle("提示");
            progressDialog.setMessage("数据加载中，请稍后....");
            progressDialog.setIcon(R.drawable.android);
            progressDialog.setIndeterminate(false);
            progressDialog.setCancelable(true);
            progressDialog.setMax(200);  //设置最大值
            progressDialog.setProgress(0);  //设置当前默认进度为0
            progressDialog.setSecondaryProgress(100);  //设置第二进度条的值为100
            progressDialog.setButton("取消", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    progressDialog.cancel();
                }
            });
            progressDialog.show();

            //定义线程动态改变当前进度条的值
            new Thread(){
                public void run(){
                    while(count<=200){
                        progressDialog.setProgress(count++);
                        try {
                            Thread.sleep(100);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    };
                }
            }.start();
        }
    };
}

效果如下：