Unbalanced calls to begin/end appearance transitions for <uivewcontroller>
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Unbalanced calls to begin/end appearance transitions for <uivewcontroller>
原因就是上次动画还没结束,然后又开始了新的动画。 这样就导致不能成功切换页面,而是一个白色无内容的页面。
出现unbalanced calls to begin/end appearance transitions for uiviewcontroller这样的log,其原因就是在容器类的UIViewController(如,UINavigationController, UITabBarController)中动画没做完,然后又开始新的动画.。解决办法就是让动画完后再做新的动画。
解决方法1:去掉动画
解决方法2:监听当前view的动画是否完成
解决方法就是,加一个BOOL型的变量,检查是否在做动画。
if (transiting) {
return;
}
transiting = YES;
[self transitionFromViewController:_currentVC toViewController:newVC duration:0.5 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
} completion:^(BOOL finished) {
transiting = NO;
}];
原因就是上次动画还没结束,然后又开始了新的动画。 这样就导致不能成功切换页面,而是一个白色无内容的页面。
出现unbalanced calls to begin/end appearance transitions for uiviewcontroller这样的log,其原因就是在容器类的UIViewController(如,UINavigationController, UITabBarController)中动画没做完,然后又开始新的动画.。解决办法就是让动画完后再做新的动画。
解决方法1:去掉动画
解决方法2:监听当前view的动画是否完成
解决方法就是,加一个BOOL型的变量,检查是否在做动画。
if (transiting) {
return;
}
transiting = YES;
[self transitionFromViewController:_currentVC toViewController:newVC duration:0.5 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
} completion:^(BOOL finished) {
transiting = NO;
}];
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