在Layout.xml中設(shè)置隱藏
<ProgressBar
android:id="@+id/progressBar001"
android:visibility="gone"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
解釋
android:visibility有三個(gè)參數(shù):
- visible:可見,默認(rèn)參數(shù)
- invisible:不可見,占居LinearLayout的空間
- gone:不可見,并且不占據(jù)空間
在代碼中修改可見
if (progressBar.getVisibility() == View.GONE) {
progressBar.setVisibility(View.VISIBLE);
} else {
progressBar.setVisibility(View.GONE);
}
