在滾動的視圖觀測滾動事件的Android庫：Android-ObservableScrollView

jopen 10年前發布 | 90K 次閱讀 Android開發移動開發 Android-ObservableScrollView

在滾動的視圖觀測滾動事件的Android庫
它易于與在Android 5.0 Lollipop中引入的工具條Toolbar相交互，并能夠幫助實現Material Design apps的外觀。

支持的控件

Widget	Since	Note
ListView	v1.0.0
ScrollView	v1.0.0
WebView	v1.0.0
RecyclerView	v1.1.0	It's supported but RecyclerView provides scroll states and position with OnScrollListener. You should use it if you don't have any reason.
GridView	-

    @Override
    public void onUpOrCancelMotionEvent(ScrollState scrollState) {
        ActionBar ab = getSupportActionBar();
        if (scrollState == ScrollState.UP) {
            if (ab.isShowing()) {
                ab.hide();
            }
        } else if (scrollState == ScrollState.DOWN) {
            if (!ab.isShowing()) {
                ab.show();
            }
        }
    }