Android:全屏系统可见性破坏了窗口插图 [英] Android : Fullscreen system visibility screws up window insets

问题描述

我正在编写一个具有一个活动和一堆片段的应用程序，其中一个片段是全屏显示.为了实现这一点，我正在尝试使用系统UI可见性"标志.

I'm writing an app that has one activity and a bunch of fragments and one of those fragments is fullscreen. In order to achieve that, I'm trying to use the System UI Visibility flags.

对于全屏片段，我设置可见性:

For the fullscreen fragment, I set the visibility:

layout.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);

我这样做后，窗口插图立即更改为似乎没有任何意义的值.然后，当我退出该全屏片段时，我的视图上出现了错误的填充(基于奇怪的插图)

As soon as I do that, the window insets change to values that don't seem to make any sense. Then, when I exit that fullscreen fragment, I wind up with wrong padding on my view (based on the weird insets)

有人知道这是怎么回事吗?我理解窗口插图的方式一定是错误的，因为这种行为似乎完全违背了直觉.任何见识将不胜感激.

Does anyone know what's going on here? The way I understand the window insets must be wrong, because this behavior seems completely counter intuitive. Any insight would be appreciated.

要查看我为说明问题而编写的测试应用程序的完整源代码，请访问此处:

To view the full source of the test app I wrote to illustrate the problem go here:

https://github.com/dapp/visibilitytest

推荐答案

我今天遇到了同样的问题.我正在使用设计库中的NavigationView.当我退出全屏显示时，NavigationView的顶部和底部都有昆虫，这很丑.

I have the same problem today. I am using a NavigationView from design library. When I exit full screen, there are insects on top and bottom of NavigationView, which is ugly.

我调试并挖掘了NavigationView的源代码，并找到以下解决方案:

I debug and dig into the source code of NavigationView and find following solution:

1. 请在您的视图中使用setFitsSystemWindows(false)方法(在我的情况下，对于NavigationView)，以避免影响状态栏和导航栏更改.

1. Please use setFitsSystemWindows(false) method for your view, in my case, for NavigationView, to avoid impact of status bar and navigation bar changes.

我发现NavigationView的超类ScrimInsetsFrameLayout中有OnApplyWindowInsetsListener，然后我通过使用ViewCompat.setOnApplyWindowInsetsListener(mNavigationView，null)清除了此侦听器，以避免在启用/禁用全屏时产生影响.

I found there is OnApplyWindowInsetsListener in NavigationView's super class: ScrimInsetsFrameLayout, then I clear this listener to avoid impact when full screen is enabled/disabled, by using ViewCompat.setOnApplyWindowInsetsListener(mNavigationView, null).

现在，当退出全屏显示时，NavigationView可以正常运行，希望这对您的问题有所帮助.

Now the NavigationView behaves correctly when exit full screen, hope this helps for your problem.

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