Unbalanced calls to begin/end appearance transitions for
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在pop控制器的时候,出现了这种情况
原因就是上次动画还没结束,然后又开始了新的动画
第一种:
可以 把动画设为NO,这是比较简单的处理方法
popViewControllerAnimated:NO
第二种:
多线程延迟动画执行的时间
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.3 * NSEC_PER_SEC)),dispatch_get_main_queue(), ^{
[self.navigationControllerpopViewControllerAnimated:NO];
});
今天发现了这个问题产生的根本原因:
A控制器动画没有完成,然后push了B控制器,当B控制器pop回到A控制器的时候,由于也产生动画,就跟A中未执行完的动画冲突了,因此产生了此问题
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