ProgressBar更新

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页面上现有ProgressBar控件progressBar，请用书写线程以10秒的的时间完成其进度显示工作。（10分）答案
publicclass ProgressBarStu extends Activity {

       private ProgressBar progressBar = null;
       protected void onCreate(BundlesavedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.progressbar);
              //从这到下是关键
              progressBar = (ProgressBar)findViewById(R.id.progressBar);

              Thread thread = new Thread(newRunnable() {

                     @Override
                     public void run() {
                            int progressBarMax =progressBar.getMax();
                            try {
                                   while(progressBarMax!=progressBar.getProgress())
                                   {

                                          intstepProgress = progressBarMax/10;
                                          intcurrentprogress = progressBar.getProgress();
                                          progressBar.setProgress(currentprogress+stepProgress);
                                          Thread.sleep(1000);
                                   }

                            } catch(InterruptedException e) {
                                   // TODO Auto-generatedcatch block
                                   e.printStackTrace();
                            }

                     }
              });

              thread.start();

              //关键结束
       }

}