titlebar 标题栏显示进度条

@Overridepublic void onCreate(Bundle icicle) {    super.onCreate(icicle);    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);    setContentView(R.layout.your_layout);}然后你可任意调用setProgressBarIndeterminateVisibility(true);setProgressBarIndeterminateVisibility(false);