Tableview自适应展示

最新推荐文章于 2023-11-21 14:28:33 发布

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最新推荐文章于 2023-11-21 14:28:33 发布

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分类专栏： iOS

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本文介绍如何使用UITableView并实现自动计算单元格的高度。通过设置tableview样式和利用Masonry进行优先级布局，确保cell能够根据内容自适应调整高度。同时详细展示了如何设置cell内各控件的布局约束。

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设置UITableView自动计算高度

设置tableview的样式

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return 0.01;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    return UITableViewAutomaticDimension;
}

设置cell布局的形式，垂直的方向布局上需要有距离底部的布局
Masonry优先级的布局

   self.titleLbl.preferredMaxLayoutWidth = self.contentView.frame.size.width -120;
   [self.titleLbl setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical];
    [self.titleLbl mas_updateConstraints:^(MASConstraintMaker *make) {
        make.top.left.mas_equalTo(10);
        make.right.mas_equalTo(self.iconImgV.mas_left);
        make.bottom.mas_equalTo(self.contentView).offset(-10);
    }];
    [self.iconImgV mas_updateConstraints:^(MASConstraintMaker *make) {
        make.top.mas_equalTo(self.titleLbl);
        make.height.mas_equalTo(40);
        make.left.mas_equalTo(self.titleLbl.mas_right);
        make.width.mas_equalTo(40);
        make.right.mas_equalTo(self.subtitleLbl.mas_left);
    }];
    [self.subtitleLbl mas_updateConstraints:^(MASConstraintMaker *make) {
        make.right.mas_equalTo(self).offset(-10);
        make.top.bottom.mas_equalTo(self.titleLbl);
        make.left.mas_lessThanOrEqualTo(self.iconImgV.mas_right);
    }];
    [self.titleLbl setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
    [self.iconImgV setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
    [self.subtitleLbl setContentCompressionResistancePriority:UILayoutPriorityDefaultLow forAxis:UILayoutConstraintAxisHorizontal];
    
  设置控件自适应高度
[self.titleLbl setContentHuggingPriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisVertical]

设置控件伸缩和拉伸的优先级

 [self.titleLbl setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
 [self.iconImgV setContentCompressionResistancePriority:UILayoutPriorityRequired forAxis:UILayoutConstraintAxisHorizontal];
 [self.subtitleLbl setContentCompressionResistancePriority:UILayoutPriorityDefaultLow forAxis:UILayoutConstraintAxisHorizontal];