- 自定义等高cell
// 创建自定义cell添加子控件的方法initWithStyle(note:子控件要添加到contentView上)
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier NS_AVAILABLE_IOS(3_0);
// 传统创建自定义view添加子空间的方法
//- (instancetype)initWithFrame:(CGRect)frame
// 自定义xib时调用的方法
//- (void)awakeFromNib;
//- (instancetype)initWithCoder:(NSCoder *)coder
// 布局子控件
- (void)layoutSubviews
{
[super layoutSubviews];
}
//设置数据
- (void)setXX:(模型数据类型 *)XX
- Masonry
- 用Masonry布局子控件frame更简洁易懂，可读性更好。
- 使用Masonry之前需要导入2个宏和Masonry头文件
//除掉前缀 #define MAS_SHORTHAND //可接收数据类型参数 #define MAS_SHORTHAND_GLOBALS #import "Masonry.h" - (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier { if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) { // 常用的间距 CGFloat margin = 10; CGFloat contentViewW = CGRectGetWidth(self.contentView.frame); CGFloat contentViewH = CGRectGetHeight(self.contentView.frame); // 1.图片 UIImageView *icon_ImageView = [[UIImageView alloc] init]; [self.contentView addSubview:icon_ImageView]; //icon_ImageView.backgroundColor = [UIColor blueColor]; self.icon_ImageView = icon_ImageView; [icon_ImageView makeConstraints:^(MASConstraintMaker *make) { // make.left.equalTo(self.contentView.left).offset(margin); // make.top.equalTo(self.contentView.top).offset(margin); make.top.left.equalTo(self.contentView).offset(margin); make.bottom.equalTo(self.contentView.bottom).offset(-margin); make.width.equalTo(80); }]; ｝ - 自定义不等高cell
// 添加子控件（把有可能显示的子控件都加进去）
- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
//布局子空间Frame
- (void)layoutSubviews
{
[super layoutSubviews];
}
// 设置子控件显示的数据
- (void)setXX:(模型数据类型 *)XX
//方案1：在heightForRowAtIndexPath:方法调用之前将所有cell的高度计算清楚
/**
* 返回每一行cell的具体高度
*/
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
JXStatus *status = self.statuses[indexPath.row];
CGFloat margin = 10;
CGFloat cellHeight = 0;
// 头像
CGFloat iconX = margin;
CGFloat iconY = margin;
CGFloat iconWH = 30;
CGRect iconImageViewFrame = CGRectMake(iconX, iconY, iconWH, iconWH);
// 文字
CGFloat textX = iconX;
CGFloat textY = CGRectGetMaxY(iconImageViewFrame) + margin;
CGFloat textW = [UIScreen mainScreen].bounds.size.width - 2 * textX;
CGSize textMaxSize = CGSizeMake(textW, MAXFLOAT);
NSDictionary *textAttrs = @{NSFontAttributeName : [UIFont systemFontOfSize:14]};
CGFloat textH = [status.text boundingRectWithSize:textMaxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:textAttrs context:nil].size.height;
CGRect text_labelFrame = CGRectMake(textX, textY, textW, textH);
// 配图
if (status.picture) {
CGFloat pictureWH = 100;
CGFloat pictureX = textX;
CGFloat pictureY = CGRectGetMaxY(text_labelFrame) + margin;
CGRect pictureImageViewFrame = CGRectMake(pictureX, pictureY, pictureWH, pictureWH);
cellHeight = CGRectGetMaxY(pictureImageViewFrame);
} else {
cellHeight = CGRectGetMaxY(text_labelFrame);
}
cellHeight += margin;
return cellHeight;
}
// 方案2：在模型中计算cell高度，返回高度直接从模型中取出
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
JXStatus *status = self.statuses[indexPath.row];
return status.cellHeight;
}
//模型数据
#import <UIKit/UIKit.h>
@interface JXStatus : NSObject
/**** 文字\图片数据 ****/
/** 姓名 */
@property (nonatomic, copy) NSString *name;
/** 文本 */
@property (nonatomic, copy) NSString *text;
/** 头像 */
@property (nonatomic, copy) NSString *icon;
/** 配图 */
@property (nonatomic, copy) NSString *picture;
/** 是否为会员 */
@property (nonatomic, assign) BOOL vip;
/**** frame数据 ****/
/** 头像的frame */
@property (nonatomic, assign) CGRect iconFrame;
/** 昵称的frame */
@property (nonatomic, assign) CGRect nameFrame;
/** 会员的frame */
@property (nonatomic, assign) CGRect vipFrame;
/** 文字的frame */
@property (nonatomic, assign) CGRect textFrame;
/** 配图的frame */
@property (nonatomic, assign) CGRect pictureFrame;
/** cell的高度 */
@property (nonatomic, assign) CGFloat cellHeight;
@end
#import "JXStatus.h"
@implementation JXStatus
- (CGFloat)cellHeight
{
if (_cellHeight == 0) {
CGFloat margin = 10;
// 头像
CGFloat iconX = margin;
CGFloat iconY = margin;
CGFloat iconWH = 30;
self.iconFrame = CGRectMake(iconX, iconY, iconWH, iconWH);
// 昵称(姓名)
CGFloat nameY = iconY;
CGFloat nameX = CGRectGetMaxX(self.iconFrame) + margin;
// 计算文字所占据的尺寸
NSDictionary *nameAttrs = @{NSFontAttributeName : [UIFont systemFontOfSize:17]};
CGSize nameSize = [self.name sizeWithAttributes:nameAttrs];
self.nameFrame = (CGRect){{nameX, nameY}, nameSize};
// 会员图标
if (self.vip) {
CGFloat vipW = 14;
CGFloat vipH = nameSize.height;
CGFloat vipY = nameY;
CGFloat vipX = CGRectGetMaxX(self.nameFrame) + margin;
self.vipFrame = CGRectMake(vipX, vipY, vipW, vipH);
}
// 文字
CGFloat textX = iconX;
CGFloat textY = CGRectGetMaxY(self.iconFrame) + margin;
CGFloat textW = [UIScreen mainScreen].bounds.size.width - 2 * textX;
CGSize textMaxSize = CGSizeMake(textW, MAXFLOAT);
NSDictionary *textAttrs = @{NSFontAttributeName : [UIFont systemFontOfSize:14]};
CGFloat textH = [self.text boundingRectWithSize:textMaxSize options:NSStringDrawingUsesLineFragmentOrigin attributes:textAttrs context:nil].size.height;
self.textFrame = CGRectMake(textX, textY, textW, textH);
// 配图
if (self.picture) {
CGFloat pictureWH = 100;
CGFloat pictureX = textX;
CGFloat pictureY = CGRectGetMaxY(self.textFrame) + margin;
self.pictureFrame = CGRectMake(pictureX, pictureY, pictureWH, pictureWH);
_cellHeight = CGRectGetMaxY(self.pictureFrame);
} else {
_cellHeight = CGRectGetMaxY(self.textFrame);
}
_cellHeight += margin;
}
return _cellHeight;
}
@end
- 自动布局
- 在Main.storyboard添加好子控件，设置好约束
- 设置子控件显示的数据
- -(void)setXX:(模型数据类型 *)XX
- 在viewDidLoad中自动计算cell高度
// 告诉tableView所有cell的真实高度是自动计算（根据设置的约束来计算） self.tableView.rowHeight = UITableViewAutomaticDimension; // 告诉tableView所有cell的估算高度 self.tableView.estimatedRowHeight = 44;
时间： 2024-10-30 17:08:22