如果不需要，防止 CollapsingToolbarLayout 崩溃 [英] Prevent CollapsingToolbarLayout collapse if not needed

问题描述

使用:

编译'com.android.support:design:23.0.0'编译'com.android.support:appcompat-v7:23.0.0'编译'com.android.support:cardview-v7:23.0.0'编译'com.android.support:recyclerview-v7:23.0.0'

随着项目

解决方案

在 Cheesesquare 中实现此类行为例如，只需将 NestedScrollView 的 android:layout_height 参数修改为 wrap_content.如果它足够小以适合屏幕，它将阻止按内容滚动.

为了防止通过 CollapsingToolbarLayout 滚动，您应该以编程方式将 layout_scrollFlags 参数设置为 AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP 值.

此处描述了如何执行此操作.

Using:

compile 'com.android.support:design:23.0.0'
compile 'com.android.support:appcompat-v7:23.0.0'
compile 'com.android.support:cardview-v7:23.0.0'
compile 'com.android.support:recyclerview-v7:23.0.0'

With the project Cheesesquare updated.

Into the detail of cheese, I remove 2 cards (to have only one). Is there a way to prevent the collapsing of the toolbar that show a blank space?

解决方案

To implement such behaviour in Cheesesquare example just modify android:layout_height param of the NestedScrollView to wrap_content. It will prevent scrolling by content if it is small enough to fit on the screen.

And to prevent scrolling by CollapsingToolbarLayout you should programmatically set layout_scrollFlags parameter to the AppBarLayout.LayoutParams.SCROLL_FLAG_SNAP value.

Here described how you can do this.

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