[英]How to make a clearColor for superview on iOS 8
請幫助。 如何在iOS 8上為模式視圖制作清晰的顏色,寫成
self.view.superview.backgroundColor = [UIColor clearColor];
在iOS 7上可以運行,但不能在iOS 8上運行。
嘗試像這樣更改alpha值:-
[[UIColor clearColor] colorWithAlphaComponent:0.6];
如果您為UIViewController主視圖設置背景色,則需要先進行設置:
- (void)setupModalPresentationStyle
{
self.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")) {
self.modalPresentationStyle = UIModalPresentationOverFullScreen;
}
}
- (void)awakeFromNib
{
[super awakeFromNib];
[self setupModalPresentationStyle];
}
當您展示此UIViewController時,您需要設置當前展示的UIViewController:
- (void)doneButtonTap:(id)sender {
self.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentViewController:detailsViewController animated:YES completion:nil];
}
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