java - 护眼宝app屏保如何实现全屏

Question

最近在编写类似的app过程中发现，利用悬浮窗在app上添加一个view用来调节颜色，但是总是发现navigation bar处的颜色无法改变，显得很奇怪，android 版本6.0，
想知道护眼宝那样的app是如何实现整个屏幕变化的

Answer 1

I don’t know if you are talking about the color of the virtual buttons or the color of the navigation bar in the app?
This part can be set windowTranslucentNavigation This is the virtual key position transparency

SystemBarTintManager-github has an open source project that sets the color of the status bar and virtual button area in version 4.4.