您好,为了响应触摸事件,我的应用程序会查看动画。如果用户真的很快并且即使在当前动画发生时再次触摸,那么一切都搞砸了。
有没有一种标准的方法来处理框架提供的这个问题?或者我是以错误的方式做动画?
目前正在检查一个标志(animationInProgress)来处理这个问题,但我想知道这是否是我们必须采取的措施?
以下是代码:
- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
NSMutableArray *c = (NSMutableArray*)context;
UINavigationController *nc = [c objectAtIndex:0];
[nc.view removeFromSuperview];
animationInProgress = NO;
}
- (void)transitionViews:(BOOL)topToBottom {
if (animationInProgress) {
return;
}
animationInProgress = YES;
NSMutableArray *context = [[NSMutableArray alloc] init];
[UIView beginAnimations:@"myanim" context:context];
[UIView setAnimationDuration:0.7f];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];
UIViewController *from;
UIViewController *to;
if (navController3.view.superview == nil ) {
from = navController2;
to = navController3;
} else {
from = navController3;
to = navController2;
}
int height;
if (topToBottom) {
height = -1 * from.view.bounds.size.height;
} else {
height = from.view.bounds.size.height;
}
CGAffineTransform transform = from.view.transform;
[UIView setAnimationsEnabled:NO];
to.view.bounds = from.view.layer.bounds;
to.view.transform = CGAffineTransformTranslate(transform, 0, height);
[window addSubview:to.view];
[UIView setAnimationsEnabled:YES];
from.view.transform = CGAffineTransformTranslate(from.view.transform, 0, -1 * height);
to.view.transform = transform;
[context addObject:from];
[UIView commitAnimations];
return;
}
答案 0 :(得分:10)
正如您所注意到的,框架的默认行为是允许任何事情同时发生。
如果您的目标是阻止特定动画在已经运行时发生,那么使用您正在执行的标记是完全合理的。
如果你想在概念上“升级”并在动画期间停止任何触摸事件进入你的应用程序,你可以使用:
[[UIApplication sharedApplication] beginIgnoringInteractionEvents];
与a:
配对[[UIApplication sharedApplication] endIgnoringInteractionEvents];