目標C-自定義情節提要Segue黑屏

Question

我有一個自定義情節提要segue，可顯示從右到左的視圖。 但是在動畫過程中，會顯示一個短暫的黑屏，這會給您帶來鋸齒狀的體驗。

這是我的代碼：

    UIViewController *srcViewController = (UIViewController *) self.sourceViewController;
    srcViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
    UIViewController *destViewController = (UIViewController *) self.destinationViewController;

    CATransition *transition = [CATransition animation];
    transition.duration = 0.1;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionPush;
    transition.subtype = kCATransitionFromRight;
    [srcViewController.view.window.layer addAnimation:transition forKey:nil];

    [srcViewController presentViewController:destViewController animated:NO completion:nil];

Answer 1

確保您的destViewController在viewDidLoad中將其視圖的背景色設置為某種顏色：

//DestViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
}

或者，我不確定100％是否可行，但是我更適合您的代碼：

UIViewController *destViewController = (UIViewController *)self.destinationViewController;
destViewController.view.backgroundColor = [UIColor whiteColor];

//Now do all the CATransitions, etc.