CoordinatorLayout与滚动的处理
转自 泡在网上的日子 CoordinatorLayout与滚动的处理
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概览
CoordinatorLayout 实现了多种Material Design中提到的滚动效果。目前这个框架提供了几种不用写动画代码就能工作的方法，这些效果包括：
- 让浮动操作按钮上下滑动，为Snackbar留出空间。
- 扩展或者缩小Toolbar或者头部，让主内容区域有更多的空间。
- 控制哪个view应该扩展还是收缩，以及其显示大小比例，包括视差滚动效果动画。
首要
遵循Design Support Library设计规范
Features
The support design library has the following key features:
1.FloatingActionButton - A round button at the bottom right denoting a primary action on your interface. Promoting key actions within a modern material design app.
2.TabLayout - An easier way to put tabs around a ViewPager which acts as sliding tabs between fragments within an app.
3.NavigationView - An easier way to provide a modern navigation drawer from the left with a header and a series of navigation items.
4.SnackBar - Shown on the bottom of the screen and contains text with an optional single action. They automatically time out after the given time length by animating off the screen.
5.TextInputLayout - Float the hint above any text field as the user is entering information and/or add a character counter.
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6.CoordinatorLayout - Provides an additional level of control over scroll and touch events between child views.
AppBarLayout allows your toolbar and other views to react to scroll events.
CollapsingToolbarLayout extend this to allow the toolbar to collapse as the user scrolls through a view.
Bottom Sheets to expose a sheet of material that slides up from the bottom of the screen.
7.PercentRelativeLayout and PercentFrameLayout to enable views to occupy percentage-based dimensions.
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8.Vector Drawables to reduce the need to include images for every density size.
- Vector drawables are compatible back to Android 2.1 (API 7), but animated vector drawables are only back-ported to Android 3.0 (API 11).
9.Animating view hierarchies using the Transitions framework down to Android 4.0 (API 14) . Currently, there is no backported support for activity/fragment transitions used in this API.
10.Bottom Navigation Views for easily switching from 3 to 5 tabbed items.