android - Android 架构中的窗口管理器

Question

我是 Android 新手，正在学习 Android 架构。我不明白 WindowManager 应该做什么。

窗口管理器在 Android 中有什么作用？

Answer 1

正如 Dianne Hackborn 在 android-framework 邮件列表中所写:

The window manager creates surfaces for the application, and applicationsdraw directly into those surfaces without going through the window manager. (source)

[T]he window manager is responsible for organizing the screen,applications don't get to decide that. The window manager allocatessurfaces and decides where they go and how they are layered; it nevertouches their bits, which is up to the application. (source)