iOS 7自定义转换故障
这段视频显示了我遇到的问题。 我正在尝试使用UIPangestureRecognitor创建自定义推式交互转换。我有一个交互式过渡代理(使用UIPercentDrivenInteractiveTransition)和一个过渡动画师 以下是平移手势如何控制过渡:iOS 7自定义转换故障,ios,objective-c,uiviewcontroller,ios7,Ios,Objective C,Uiviewcontroller,Ios7,这段视频显示了我遇到的问题。 我正在尝试使用UIPangestureRecognitor创建自定义推式交互转换。我有一个交互式过渡代理(使用UIPercentDrivenInteractiveTransition)和一个过渡动画师 以下是平移手势如何控制过渡: - (void) panGestureRecognized:(UIPanGestureRecognizer *) gestureRecogznier { CGPoint translation = [gestureRecogz
- (void) panGestureRecognized:(UIPanGestureRecognizer *) gestureRecogznier {
CGPoint translation = [gestureRecogznier translationInView:gestureRecogznier.view];
if (gestureRecogznier.state == UIGestureRecognizerStateBegan) {
self.interactiveTransitionAnimator = [[UIPercentDrivenInteractiveTransition alloc] init];
EVDetailViewController *detailViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"EVDetailViewController"];
[self.navigationController pushViewController:detailViewController animated:YES];
}
else if (gestureRecogznier.state == UIGestureRecognizerStateChanged) {
CGFloat d = (translation.x / CGRectGetWidth(self.view.bounds)) * -1;
[self.interactiveTransitionAnimator updateInteractiveTransition:d];
}
else if (gestureRecogznier.state == UIGestureRecognizerStateEnded) {
if ([gestureRecogznier velocityInView:self.view].x < 0) {
[self.interactiveTransitionAnimator finishInteractiveTransition];
} else {
[self.interactiveTransitionAnimator cancelInteractiveTransition];
}
self.interactiveTransitionAnimator = nil;
}
}
-(void)PangestureRecognited:(UIPangestureRecognitizer*)手势识别器{
CGPoint translation=[gestureRecogznier translationView:gestureRecogznier.view];
if(gestureRecogznier.state==UIgestureRecognizerStateStart){
self.interactiveTransitionAnimator=[[UIPercentDriventerActivityTransition alloc]init];
EVDetailViewController*detailViewController=[self.storyboard实例化EVEWCONTROLLER WITHIDER:@“EVDetailViewController”];
[self.navigationController pushViewController:detailViewController动画:是];
}
else if(gestureRecogznier.state==UIGestureRecognizerStateChanged){
CGFloat d=(translation.x/CGRectGetWidth(self.view.bounds))*-1;
[self.interactiveTransitionAnimator updateInteractiveTransition:d];
}
else if(gestureRecogznier.state==UIGestureRecognizerStateEnded){
if([gestureRecogznier velocityInView:self.view].x<0){
[self.interactiveTransitionAnimator finishInteractiveTransition];
}否则{
[self.interactiveTransitionAnimator cancelInteractiveTransition];
}
self.interactiveTransitionAnimator=nil;
}
}
UINavigationControllerDelegate处理两个转换代理对象的出售,这在调用pushViewController:时触发
“transition animator”有一个非常简单的动画:
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext {
UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
[[transitionContext containerView] addSubview:toViewController.view];
CGRect finalToVCFrame = [transitionContext finalFrameForViewController:toViewController];
if (self.operation == UINavigationControllerOperationPush) {
// set offscreen to the right
toViewController.view.frame = CGRectMake(320.0f, 0.0f, 320.0f, 568.0f);
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0f options:0 animations:^{
toViewController.view.frame = finalToVCFrame;
} completion:^(BOOL finished) {
// *** When this is called, the glitch occurs
[transitionContext completeTransition:YES];
}];
}
}
-(void)animateTransfion:(id)transitionContext{
UIViewController*toViewController=[transitionContext ViewControllerWorky:UITransitionContextToViewControllerKey];
[[transitionContext containerView]添加子视图:toViewController.view];
CGRect finalToVCFrame=[transitionContext finalFrameForViewController:toViewController];
if(self.operation==UINavigationControllerOperationPush){
//将屏幕外设置为右侧
toViewController.view.frame=CGRectMake(320.0f、0.0f、320.0f、568.0f);
[UIView animateWithDuration:[self-transitionDuration:transitionContext]延迟:0.0f选项:0个动画:^{
toViewController.view.frame=finalToVCFrame;
}完成:^(布尔完成){
//***调用此命令时,会出现故障
[transitionContext completeTransition:是];
}];
}
}
在视频中,平移手势结束了大约60%的行程,这将触发finishInteractiveTransition调用。一切都会顺利进行,直到基于UIView块的动画中的完成块调用completeTransition:。调用此方法时,toViewController会不必要地重新设置推送动画最后一部分的动画。在视频中,红色视图是窗口。动画持续时间为3秒
我不明白为什么会这样。它看起来像是手势结束和调用completeTransition:之间的动画发生了两次。有什么想法吗?如果调用
[transitionContext completeTransition:YES]会发生什么调用finishInteractiveTransition
后立即执行以下操作:
else if (gestureRecogznier.state == UIGestureRecognizerStateEnded) {
if ([gestureRecogznier velocityInView:self.view].x < 0) {
[self.interactiveTransitionAnimator finishInteractiveTransition];
[transitionContext completeTransition:YES];
} else {
[self.interactiveTransitionAnimator cancelInteractiveTransition];
}
self.interactiveTransitionAnimator = nil;
}
else if(gesturererecogznier.state==UIGestureRecognizerStateEnded){
if([gestureRecogznier velocityInView:self.view].x<0){
[self.interactiveTransitionAnimator finishInteractiveTransition];
[transitionContext completeTransition:是];
}否则{
[self.interactiveTransitionAnimator cancelInteractiveTransition];
}
self.interactiveTransitionAnimator=nil;
}
我有一个没有故障的例子。如果您还有其他问题,请告诉我。从iOS 7.1开始,我可以在模拟器中复制,但不能在实际设备上复制。无论如何,似乎有一个解决办法:
self.interactiveTransitionAnimator.completionSpeed = 0.999;
此错误有一个雷达:或者,如观察到的,您也可以延迟完成感知
或自己驱动自定义交互控制器:
我见过类似的事情。我有两个可能的解决办法。一种是在动画完成处理程序中使用延迟性能:
} completion:^(BOOL finished) {
double delayInSeconds = 0.1;
dispatch_time_t popTime =
dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
BOOL cancelled = [transitionContext transitionWasCancelled];
[transitionContext completeTransition:!cancelled];
});
self.interacting = NO;
}];
另一种可能性是:不要使用百分比驱动动画!当我自己手动驾驶交互式自定义动画时,我从来没有遇到过这样的问题
它看起来像completeTransition:必须在finishInteractiveTransition完成剩余动画后调用。所以我在延迟后做了一个performSelector,这就成功了。然而,使用此方法,后退按钮V形符号会短暂闪烁。缺少project.pbxproj文件。哦,天哪,你刚刚为我节省了这么多时间!我真不敢相信我花了多长时间才发现这一点,因为苹果的一个臭虫。非常感谢。