视图的框架不改变

Question

我有一个 tableview.when 重新加载数据我将配置单元格和更新约束。在那个单元格的layoutSubviews被调用之后，但是视图的框架不能被更新

- (void)configModel:(LKSportActivityEventModel *)model {
 //some code before
   CGFloat titleWidth = 100;
   [self.activityNameView mas_updateConstraints:^(MASConstraintMaker *make) {
        make.width.mas_equalTo(titleWidth);
    }];
 //some code after
}

- (void)layoutSubviews {
    [super layoutSubviews];
    [self setCorner:UIRectCornerBottomRight | UIRectCornerTopLeft
             bounds:self.activityNameView.bounds
         cornerSize:CGSizeMake(4, 4)
         targetView:self.activityNameView
              layer:self.activityNameViewShapLayer];
}

activityNameView 的边界不变

Answer 1

The default implementation uses any constraints you have set to determine the size and position of any subviews.

layoutSubviews 只计算其子视图的大小和位置。它没有布置整个视图子树。

UITableViewCell.layoutSubviews之后，只有content view的框架是对的

修复布局的更简单方法是在 layoutSubviews 中调用 contentView.layoutIfNeeded。

视图的框架不改变

view's frame don't change

ios

autolayout

masonry