Question

ios开发中怎么把全屏view加到window上面

Answer 1

下面是比较严谨的获取方法：
- (UIWindow *)lastWindow
{
NSArray *windows = [UIApplication sharedApplication].windows;
for(UIWindow *window in [windows reverseObjectEnumerator]) {

if ([window isKindOfClass:[UIWindow class]] &&
CGRectEqualToRect(window.bounds, [UIScreen mainScreen].bounds))

return window;
}

return [UIApplication sharedApplication].keyWindow;
}