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">
  <Button
      android:id="@+id/btn"
      android:layout_height="wrap_content"
      android:layout_width="wrap_content"
      android:text="查找网络连接"/>      
  
</LinearLayout>


.java代码如下： 

package org.lxh.demo;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.Spinner;
import android.widget.TextView;

public class Hello extends Activity {
  private Button btn = null;
  private static final int MAX_PROGRESS=100;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState); // 生命周期方法
    super.setContentView(R.layout.main); // 设置要使用的布局管理器
    this.btn = (Button) super.findViewById(R.id.btn);
    this.btn.setOnClickListener(new OnClickListenerImpl());
  }

  private class OnClickListenerImpl implements OnClickListener {

    public void onClick(View v) {
      final ProgressDialog proDialog=new ProgressDialog(Hello.this);
      proDialog.setTitle("搜索网络");
      proDialog.setMessage("请耐心等待...");
      proDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
      proDialog.setMax(MAX_PROGRESS);
      proDialog.setProgress(30);
      proDialog.setButton("后台处理", new DialogInterface.OnClickListener() {
        
        public void onClick(DialogInterface arg0, int arg1) {
          proDialog.dismiss();
          
        }
      });
      proDialog.onStart();
      new Thread(){
        public void run(){
          for(int x=0;x<MAX_PROGRESS;x++){
          try {
            Thread.sleep(500);
          } catch (InterruptedException e) {
            
            e.printStackTrace();
          }
          proDialog.incrementProgressBy(1);
        }
          proDialog.dismiss();
      }}.start();
      proDialog.show();
    }

  }

}



效果运行如下：

安卓-进度处理对话框（ProgressDialog）_android