如何在Android中检测滚动视图方向

Question

Anyone know how to detect ScrollView direction because I have to show and hide ActionBar on scrolling? I can easily detect with help of listview but don't know about ScrollView.

Answer 1

you can extend the scrollView because scrollview doesnt have such listener. just extend the scrolView and call your callback from the overrided onScrollChanged method.

then in your xml file use your CustomScrollView like this:

<my.package.CustomScrollView>xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/my_view"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />

Answer 2

I think what you meant by scroll was detecting which direction, a swipe has been made . Here is an example