ios . -- UICollectionView --cell 自适应
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#pragma mark — 视图控制器中使用:(关键) layout.estimatedItemSize = CGSizeMake(WIDTH, 60); // layout约束这边必须要用estimatedItemSize才能实现自适应,使用itemSzie无效
// // 商品详情 容器 详情 cell #import <UIKit/UIKit.h> @interface DetailsViewCell : UICollectionViewCell @property (nonatomic,strong) CategorizeListOfGoodsModel *goodsitemmodel; @end
#import "DetailsViewCell.h" @interface DetailsViewCell() @property (nonatomic,strong) UILabel *titletxt;//标题 @property (nonatomic,strong) UILabel *pracetxt;//价格 @property (nonatomic,strong) UILabel *msaletxt;//销量 @end @implementation DetailsViewCell - (void)setGoodsitemmodel:(CategorizeListOfGoodsModel *)goodsitemmodel { _goodsitemmodel = goodsitemmodel; self.titletxt.text = [NSString stringWithFormat:@"%@",goodsitemmodel.title]; self.pracetxt.text = [NSString stringWithFormat:@"¥%@",goodsitemmodel.voucher_price]; self.msaletxt.text = [NSString stringWithFormat:@"月销%@",goodsitemmodel.m_sale]; [self.contentView mas_makeConstraints:^(MASConstraintMaker *make) { make.left.top.mas_equalTo(0); make.width.mas_equalTo([UIScreen mainScreen].bounds.size.width); make.bottom.mas_equalTo(self.pracetxt.mas_bottom).offset(10); }]; [self.titletxt mas_makeConstraints:^(MASConstraintMaker *make) { make.top.equalTo(self).mas_offset(10); make.left.equalTo(self).mas_offset(10); make.right.equalTo(self).mas_offset(-10); }]; [self.pracetxt mas_makeConstraints:^(MASConstraintMaker *make) { make.top.equalTo(self.titletxt.mas_bottom).mas_offset(10); make.bottom.equalTo(self).mas_offset(-10); make.left.equalTo(self).mas_offset(10); }]; [self.msaletxt mas_makeConstraints:^(MASConstraintMaker *make) { make.top.equalTo(self.titletxt.mas_bottom).mas_offset(10); make.bottom.equalTo(self).mas_offset(-10); make.right.equalTo(self).mas_offset(-10); }]; } - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { [self initWithUIFrame:frame]; } return self; } - (void)initWithUIFrame:(CGRect)rect { self.contentView.backgroundColor = [UIColor whiteColor]; self.titletxt = [[UILabel alloc]init]; self.titletxt.font = [UIFont systemFontOfSize:14]; self.titletxt.textColor = [YColor YColorWithHexString:@"#333333"]; self.titletxt.numberOfLines = 0; [self.contentView addSubview:self.titletxt]; self.pracetxt = [[UILabel alloc]init]; self.pracetxt.font = [UIFont systemFontOfSize:16]; self.pracetxt.textColor = [YColor YColorWithHexString:@"#F32F19"]; [self.contentView addSubview:self.pracetxt]; self.msaletxt = [[UILabel alloc]init]; self.msaletxt.font = [UIFont systemFontOfSize:12]; self.msaletxt.textColor = [YColor YColorWithHexString:@"#999999"]; [self.contentView addSubview:self.msaletxt]; } #pragma mark — 实现自适应文字宽度的关键步骤:item的layoutAttributes - (UICollectionViewLayoutAttributes*)preferredLayoutAttributesFittingAttributes:(UICollectionViewLayoutAttributes*)layoutAttributes { [self setNeedsLayout]; [self layoutIfNeeded]; CGSize size = [self.contentView systemLayoutSizeFittingSize: layoutAttributes.size]; CGRect cellFrame = layoutAttributes.frame; cellFrame.size.height= size.height; layoutAttributes.frame= cellFrame; return layoutAttributes; } @end
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