android - PlayStore新视差效果怎么做

Question

有谁知道我怎样才能实现新的视差滚动效果 - 当您在 PlayStore 上打开应用并尝试向下滚动时，您可以看到效果，内容会超出顶部图像。我怎样才能做到这一点？

Answer 1

Google 最近宣布了 Design support library并且它支持实现折叠工具栏。

In addition to pinning a view, you can use app:layout_collapseMode="parallax" (and optionally app:layout_collapseParallaxMultiplier="0.7" to set the parallax multiplier) to implement parallax scrolling (say of a sibling ImageView within the CollapsingToolbarLayout)

例子:

<android.support.design.widget.AppBarLayout
        android:layout_height="192dp"
        android:layout_width="match_parent">
    <android.support.design.widget.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">
        <android.support.v7.widget.Toolbar
                android:layout_height="?attr/actionBarSize"
                android:layout_width="match_parent"
                app:layout_collapseMode="pin"/>
        </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>