ios - 奇怪的索引超出范围异常

我正在尝试动画化scrollView内部视图的删除。 scrollView的子视图是从对象数组中填充的。每个对象都有一个表示它的视图。有时我删除时会收到indexOutOfBounds异常。这是我的删除代码：

-(void)deleteView:(UIView *)viewToDelete{
    [self.myObjects removeObjectAtIndex:viewToDelete.tag];
    [UIView animateWithDuration:0.5 animations:^{
        viewToDelete.alpha = 0.0;
        for (NSInteger index = viewToDelete.tag+1; index<self.myViews.count; index++){
            UIView *view = [self.myViews objectAtIndex:index];
            view.center = CGPointMake(view.center.x,view.center.y-viewToDelete.frame.size.height);
        }
    }]; completion:^(BOOL finished) {
        [view removeFromSuperview];
    }];

    [self.myViews removeObjectAtIndex:viewToDelete.tag];
    for (NSInteger index=0; index<self.myVies.count; index++){
        UIView *view = [self.myViews objectAtIndex:index];
        view.tag = index;
    }

}

最佳答案

问题出在动画块上

您应该知道动画块是异步处理的，因此您最后的和平代码可能会在动画过程中被调用，并在动画块内的迭代循环中造成混乱。你应该移动

[self.myViews removeObjectAtIndex:viewToDelete.tag];
for (NSInteger index=0; index<self.myVies.count; index++){
    UIView *view = [self.myViews objectAtIndex:index];
    view.tag = index;
}

到完成块

关于ios - 奇怪的索引超出范围异常，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15247787/