objective-c - 视图view.window返回当前keywindow吗?

Question

UIView.window属性来源于当前UIApplication.keyWindow，可以通过此属性让UIView间接获取到该视图的UIViewController类。

Answer 1

I think UIView.window returns the window where the current view is located, not necessarily the keywindow

Answer 2

self.view.window 只是当前view的window,可能是keywindow
@property(nonatomic, readonly) UIWindow *window
Description	
The receiver’s window object, or nil if it has none. (read-only)
This property is nil if the view has not yet been added to a window.

[[UIApplication sharedApplication] keyWindow]
@property(nonatomic, readonly) UIWindow *keyWindow
This property holds the UIWindow object in the windows array that is most recently sent the makeKeyAndVisible message.

[[UIApplication sharedApplication] windows]
@property(nonatomic, readonly) NSArray *windows
This property returns an array of the application's visible and hidden windows. The windows are ordered back to front.

Answer 3

In case view is a certain area on the keyboard, view.window is the window of the keyboard.

Answer 4

Not necessarily.

Can be judged by view.window.keyWindow.