写了这么一段代码 可放在虚拟机运行的时候 点击按钮没反应 Android简单的两种进度对话框

public class MainActivity extends Activity implements OnClickListener{

private static final int MAX_PROGERSS=100;
private ProgressDialog progressDialog;
private Handler progressHandler;
private int progress;
//显示进度对话框，style 表示进度对话框的风格
private void showProgressDialog(int style){
    //创建ProgressDialog类的对象实例
    progressDialog=new ProgressDialog(this);
    progressDialog.setIcon(R.drawable.waitting);
    progressDialog.setTitle("正在处理数据…");
    progressDialog.setMessage("请稍后……");
    //设置进度对话框的风格
    progressDialog.setProgressStyle(style);
    //设置进度对话框的进度最大值
    progressDialog.setMax(MAX_PROGERSS);
    //设置进度对话框的‘暂停’按钮
    progressDialog.setButton("暂停", new DialogInterface.OnClickListener() {

        public void onClick(DialogInterface dialog, int whichButton) {
            // 删除消息队列中的消息来停止定时器
            progressHandler.removeMessages(1);

        }
    });
    //设置进度对话框的‘取消’按钮
    progressDialog.setButton2("取消", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int whichButton) {
            // 删除消息队列中的消息来停止定时器
            progressHandler.removeMessages(1);
            //恢复进度初始值
            progress=0;
            progressDialog.setProgress(0);
        }
    });
    progressDialog.show();
    progressHandler=new Handler(){
        public void handleMessage(Message msg){
            super.handleMessage(msg);
            if(progress>=MAX_PROGERSS){
                //进度达到最大值，关闭对话框
                progress=0;
                progressDialog.dismiss();
            }
            else{
                progress++;
                //将进度递增1
                progressDialog.incrementProgressBy(1);
                //随机设置下一次递增进度（调用handleMessage方法）的时间间隔
                //第一个参数表示消息代码，第2个参数表示下一次调用handleMessage要等待的毫秒数
                progressHandler.sendEmptyMessageAtTime(1, 
                        50+new Random().nextInt(500));
            }
        }
    };
    //设置进度初始值
    progress=(progress>0)?progress:0;
    progressDialog.setProgress(progress);
    //立即设置进度对话框中的进度值，第一个参数表示消息代码
    progressHandler.sendEmptyMessage(1);
}

public void onClick(View view){
    switch(view.getId()){
        case R.id.button1:
            //显示水平进度对话框
            showProgressDialog(ProgressDialog.STYLE_HORIZONTAL);
            break;
        case R.id.button2:
            //显示圆形进度对话框
            showProgressDialog(ProgressDialog.STYLE_SPINNER);
            break;
    }
}
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button button1=(Button)findViewById(R.id.button1);
    Button button2=(Button)findViewById(R.id.button2);
    button1.setOnClickListener(this);
    button2.setOnClickListener(this);
}

}

你试试将setButton和setButton2换成setPositiveButton和setNegativeButton看看可以否