Android---ProgressBar

进度条用于进行耗时操作时，给用户显示一操作的进行状态。

进度条的样式有圆圈状：progressBarStyleLarge、默认、progressBarStyleSmall和条状：rogressBarStyleHorizontal

进度条常用属性设置

进度条的状态：setVisibility(int v)View.GONE:隐藏、View.VISIBLE:可见

进度条当前进度：setProgress(int progress)

进度条的最大进度：setMax(int max)

状态栏中显示的两种进度条

//长方形进度条

 this.requestWindowFeature(Window.FEATURE_PROGRESS);

 this.setProgressBarVisibility(true);

 

//圆形进度条
 this.requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
 this.setProgressBarIndeterminateVisibility(true);