UITableViewCell约束使用UITextView滚动错误

Question

我有一个UITableViewCell的子类，使用Masonry设置约束取决于我的单元格样式（枚举）。例如，我有一个带有一些按钮的正确包装器，有时我想在我的包装器的宽度不等于零时使用我的UITextView的排除路径。只有在我向下滚动到此单元格并再次向上和向下滚动后，所有工作才有效。在第一次尝试时我有

我向上和向下滚动后

- (void)setCellType:(ReservationCellType)cellType
{
    self->_cellType = cellType;
    CGFloat rightButtonsWrapperWidth = 0;
    CGFloat rightButtonsWrapperHeight = 0;
    if (cellType == ReservationCellTypeSeating) {
        if (self.reservationStatus == ReservationStatusArrived) {
            rightButtonsWrapperWidth = 100.f;
            rightButtonsWrapperHeight = 100.f;
        } else {
            rightButtonsWrapperWidth = 0;
            rightButtonsWrapperHeight = 0;
        }
    }

    [self.rightButtonsWrapper mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.width.mas_equalTo(rightButtonsWrapperWidth);
        make.height.mas_equalTo(rightButtonsWrapperHeight);
    }];

    if (cellType == ReservationCellTypeSeating) {
        if (self.reservationStatus == ReservationStatusArrived) {
            [self addRightButtonsWrapperExcludedPathWidth:rightButtonsWrapperWidth height:rightButtonsWrapperHeight];
        }
    }

}

addRightButtonsWrapperExcludedPathWidth:height:

的代码

- (void)addRightButtonsWrapperExcludedPathWidth:(CGFloat)width height:(CGFloat)height
{
    CGRect frame = CGRectMake(CGRectGetMinX(self.rightButtonsWrapper.frame), CGRectGetMinY(self.rightButtonsWrapper.frame), width, height);
    CGRect rightWrapperExclusionRect = [self.noteTextView convertRect:frame fromView:self.wrapper];
    UIBezierPath *rightWrapperExcludedPath = [UIBezierPath bezierPathWithRect:rightWrapperExclusionRect];
    self.noteTextView.textContainer.exclusionPaths = @[rightWrapperExcludedPath];
    [self.wrapper layoutIfNeeded];
}

在cellForRowAtIndexPath:我致电[cell layoutIfNeeded];请帮帮我。第二个问题是 - 在调用reloadData之前，我的计算总是错误的。经过一些滚动，我遇到了很多布局问题。求你帮帮我。