顯示在標題上的進度條

若顯示帶進度的進度條：

1 requestWindowFeature(Window.FEATURE_PROGRESS);

2 setProgressBarVisibility(true);

3 setProgress(10); 

 

若顯示不帶進度的進度條：

1 requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

2 setProgressBarIndeterminateVisibility(true);