【发布时间】：2013-10-10 05:33:02
【问题描述】：
我正在实现自定义导航转换，并使用 UIPercentDrivenInteractiveTransition 来解决问题。
我的非交互式转换工作正常，我正在使用动画块来处理转换动画，但是一旦我添加了交互式转换，如果我取消转换，屏幕现在会变黑。
这是我跟踪手势的代码：
-(void)userDidPan:(UIScreenEdgePanGestureRecognizer *)recognizer {
CGPoint location = [recognizer locationInView:nil];
if (recognizer.state == UIGestureRecognizerStateBegan) {
// We're being invoked via a gesture recognizer – we are necessarily interactive
self.hasActiveInteraction = YES;
self.interactiveTransition = [BXTPercentDrivenInteractiveTransition new];
[[BXTNavigationController sharedNavigationController] popViewControllerAnimated:YES];
}
else if (recognizer.state == UIGestureRecognizerStateChanged) {
CGFloat ratio = location.x / CGRectGetWidth(recognizer.view.frame);
NSLog(@"Percentage complete: %0.2f",ratio*100);
[self.interactiveTransition updateInteractiveTransition:ratio];
}
else if (recognizer.state == UIGestureRecognizerStateEnded) {
// Depending on our state and the velocity, determine whether to cancel or complete the transition.
CGFloat ratio = location.x / CGRectGetWidth(recognizer.view.frame);
if (ratio > 0.50) {
NSLog(@"Completing");
[self.interactiveTransition finishInteractiveTransition];
}
else {
NSLog(@"Canceling");
[self.interactiveTransition cancelInteractiveTransition];
}
}
}
...当我从视图控制器中弹出时，这是我的动画块的（缩写）：
[UIView animateWithDuration:kBXTNavigationTimingDuration
delay:0
options:animationOption
animations:^{
toVC.view.frame = destinationFrameForPoppedView;
fromVC.view.frame = CGRectOffset(fromVC.view.frame, fromVC.view.frame.size.width, 0);
} completion:^(BOOL finished) {
[darkeningView removeFromSuperview];
[_transition.secondaryTransitionViews enumerateObjectsUsingBlock:^(BXTTransitionView *transitionView, NSUInteger idx, BOOL *stop) {
[transitionView.view removeFromSuperview];
}];
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
任何想法为什么在使用自定义导航转换取消从左侧滑动弹出动画时屏幕变黑？
【问题讨论】：
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我的项目中遇到了完全相同的问题...我正在使用this 教程，看起来也像您...教程的示例项目工作正常，我看不到我做错了什么，除了我只有 1 个用于 push 和 pop 的动画对象而不是 2 个。