CoordinatorLayout：隐藏/显示一半可见的工具栏？ [英] CoordinatorLayout: Hiding/Showing half visible toolbar?

问题描述

我还想来达到类似的效果为一个你可以看到在谷歌Play商店，其中通过滚动含量工具栏熄灭-screen为您滚动。

Id like to achieve a similar effect as the one you can see in Google Play store, where by scrolling the content the Toolbar goes off-screen as you scroll.

这工作正常的 CoordinatorLayout （<一href="http://developer.android.com/reference/android/support/design/widget/CoordinatorLayout.html">1)在推出的＃io15 ，但是：如果停止滚动中途工具栏仍保留在屏幕上，但减少了一半：我希望它关屏动画，就像在谷歌Play商店。我怎样才能做到这一点？

This works fine with the CoordinatorLayout (1) introduced at #io15, however: If you stop the scroll "mid-way" the Toolbar remains on screen, but is cut in half: I want it to animate off-screen, just like in the Google Play store. How can I achieve that?

推荐答案

现在Android的支持库23.1.0有一个新的滚动标记 SCROLL_FLAG_SNAP ，它允许你实现这个的效果。

Now the Android Support Library 23.1.0 has a new scroll flag SCROLL_FLAG_SNAP which allows you to achieve this effect.

AppBarLayout支持一些滚动的旗帜，影响孩子的意见，以滚动（如滚动关闭屏幕）的反应。这次发布的新品是SCROLL_FLAG_SNAP，确保滚动结束时，认为不剩部分可见。相反，它会被滚动到其最近的边缘，使得完全可见或滚动完全在屏幕上。

AppBarLayout supports a number of scroll flags which affect how children views react to scrolling (e.g. scrolling off the screen). New to this release is SCROLL_FLAG_SNAP, ensuring that when scrolling ends, the view is not left partially visible. Instead, it will be scrolled to its nearest edge, making fully visible or scrolled completely off the screen.

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