源码-020501-自定义非等高cell-storyboard

//
//  XMGStatusesViewController.m
//  备课03-不等高的cell-非代码

#import "XMGStatusesViewController.h"
#import "XMGStatus.h"
#import "XMGStatusCell.h"

@interface XMGStatusesViewController ()
@property (strong, nonatomic) NSArray *statuses;
@end

@implementation XMGStatusesViewController

- (NSArray *)statuses
{
    if (_statuses == nil) {
        // 加载plist中的字典数组
        NSString *path = [[NSBundle mainBundle] pathForResource:@"statuses.plist" ofType:nil];
        NSArray *dictArray = [NSArray arrayWithContentsOfFile:path];
        
        // 字典数组 -> 模型数组
        NSMutableArray *statusArray = [NSMutableArray array];
        for (NSDictionary *dict in dictArray) {
            XMGStatus *status = [XMGStatus statusWithDict:dict];
            [statusArray addObject:status];
        }
        _statuses = statusArray;
    }
    return _statuses;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
}

#pragma mark - Table view data source
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.statuses.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    XMGStatusCell *cell = [XMGStatusCell cellWithTableView:tableView];
    cell.status = self.statuses[indexPath.row];
    return cell;
}

#pragma mark - 代理方法
/**
 *  返回每一行的高度
 */
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    XMGStatus *staus = self.statuses[indexPath.row];
    return staus.cellHeight;
}
/**
 * 返回每一行的估计高度
 * 只要返回了估计高度，那么就会先调用tableView:cellForRowAtIndexPath:方法创建cell，
　　再调用tableView:heightForRowAtIndexPath:方法获取cell的真实高度
 */
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return 200;
}
@end

//
//  XMGStatus.h
#import <UIKit/UIKit.h>

@interface XMGStatus : NSObject
@property (strong, nonatomic) NSString *name;
@property (strong, nonatomic) NSString *text;
@property (strong, nonatomic) NSString *icon;
@property (strong, nonatomic) NSString *picture;
@property (assign, nonatomic, getter=isVip) BOOL vip;

/** cell的高度 */
@property (assign, nonatomic) CGFloat cellHeight;

+ (instancetype)statusWithDict:(NSDictionary *)dict;
@end

//
//  XMGStatusCell.m
//  07-自定义非等高cell-xib
#import "XMGStatusCell.h"
#import "XMGStatus.h"

@interface XMGStatusCell()
@property (weak, nonatomic) IBOutlet UIImageView *iconView;
@property (weak, nonatomic) IBOutlet UILabel *nameLabel;
@property (weak, nonatomic) IBOutlet UIImageView *vipView;
@property (weak, nonatomic) IBOutlet UILabel *contentLabel;
@property (weak, nonatomic) IBOutlet UIImageView *pictureView;

@end

@implementation XMGStatusCell

+ (instancetype)cellWithTableView:(UITableView *)tableView
{
    return [tableView dequeueReusableCellWithIdentifier:@"status"];
}

- (void)awakeFromNib
{
    // 设置label每一行文字的最大宽度
    // 为了保证计算出来的数值 跟 真正显示出来的效果 一致
    self.contentLabel.preferredMaxLayoutWidth = [UIScreen mainScreen].bounds.size.width - 20;
}

- (void)setStatus:(XMGStatus *)status
{
    _status = status;
    
    if (status.isVip) {
        self.nameLabel.textColor = [UIColor orangeColor];
        self.vipView.hidden = NO;
    } else {
        self.nameLabel.textColor = [UIColor blackColor];
        self.vipView.hidden = YES;
    }
    
    self.nameLabel.text = status.name;
    self.iconView.image = [UIImage imageNamed:status.icon];
    if (status.picture) {
        self.pictureView.hidden = NO;
        self.pictureView.image = [UIImage imageNamed:status.picture];
    } else {
        self.pictureView.hidden = YES;
    }
    self.contentLabel.text = status.text;
    
    // 强制布局
    [self layoutIfNeeded];
    
    // 计算cell的高度
    if (self.pictureView.hidden) { // 没有配图
        status.cellHeight = CGRectGetMaxY(self.contentLabel.frame) + 10;
    } else { // 有配图
        status.cellHeight = CGRectGetMaxY(self.pictureView.frame) + 10;
    }
}

@end