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

@interface ViewController : UITableViewController


@end


// ViewController.m
#import "ViewController.h"
#import "XMGStatusCell.h"
#import "XMGStatus.h"
#import "MJExtension.h"

@interface ViewController ()
/** 所有的微博模型*/
@property (nonatomic ,strong) NSArray *statuses;
@end

@implementation ViewController


- (NSArray *)statuses
{
    if (!_statuses) {
        _statuses = [XMGStatus mj_objectArrayWithFilename:@"statuses.plist"];
    }
    return _statuses;
}

NSString *ID = @"status";
- (void)viewDidLoad {
    [super viewDidLoad];

    // 注册
    [self.tableView registerNib:[UINib nibWithNibName:NSStringFromClass([XMGStatusCell class]) bundle:nil] forCellReuseIdentifier:ID];

    // 大概行高
    self.tableView.estimatedRowHeight = 200;
}

#pragma mark - 数据源方法
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.statuses.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    XMGStatusCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];

    // 传递模型数据
    cell.status = self.statuses[indexPath.row];
    return cell;
}

// 方案:在这个方法返回之前就要确定好cell的高度
XMGStatusCell *cell;
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (cell == nil) {
        cell = [tableView dequeueReusableCellWithIdentifier:ID];
        // 如果没有找到，那么就去storyboard里面找
    }
    cell.status = self.statuses[indexPath.row];
    return cell.cellHeight;
}

@end


// 模型数据
#import <UIKit/UIKit.h>
// XMGStatus.h

#define XMGTextFont [UIFont systemFontOfSize:14]
#define XMGNameFont [UIFont systemFontOfSize:17]
@interface XMGStatus : NSObject

/** 图像*/
@property (nonatomic ,copy) NSString *icon;

/** 昵称*/
@property (nonatomic ,copy) NSString *name;

/** 内容(正文)*/
@property (nonatomic ,copy) NSString *text;

/** vip*/
@property (nonatomic ,assign ,getter=isVip) BOOL vip;

/** 配图*/
@property (nonatomic ,copy) NSString *picture;


@end


// XMGStatus.m
#import "XMGStatus.h"

@implementation XMGStatus

@end


// XMGStatusCell.h

#import <UIKit/UIKit.h>

@class XMGStatus;
@interface XMGStatusCell : UITableViewCell

/** 微博模型*/
@property (nonatomic ,strong) XMGStatus *status;

/** cell的高度*/
- (CGFloat)cellHeight;

@end

// XMGStatusCell.m
#import "XMGStatusCell.h"
#import "XMGStatus.h"


@interface XMGStatusCell ()
/** 图像*/
@property (nonatomic ,weak) IBOutlet UIImageView *iconImageView;

/** 昵称*/
@property (nonatomic ,weak) IBOutlet UILabel *nameLabel;

/** vip*/
@property (nonatomic ,weak) IBOutlet UIImageView *vipImageView;

/** 正文*/
@property (nonatomic ,weak) IBOutlet UILabel *text_Label;

/** 配图*/
@property (nonatomic ,weak)IBOutlet UIImageView *pictureImageView;


@end

@implementation XMGStatusCell

- (void)awakeFromNib
{
    // 手动设置label的文字的最大宽度(目的:为了能够计算label的高度,得到最真实的尺寸)
    self.text_Label.preferredMaxLayoutWidth = [UIScreen mainScreen].bounds.size.width - 20;
}

// 设置数据
- (void)setStatus:(XMGStatus *)status
{
    _status = status;
    self.iconImageView.image = [UIImage imageNamed:status.icon];

    self.nameLabel.text = status.name;

    if (status.isVip) { // 是VIP
        self.vipImageView.hidden = NO;
        self.nameLabel.textColor = [UIColor orangeColor];
    } else {
        self.vipImageView.hidden = YES;
        self.nameLabel.textColor = [UIColor blackColor];
    }

    self.text_Label.text = status.text;

    if (status.picture) { // 有配图
        self.pictureImageView.hidden = NO;
        self.pictureImageView.image = [UIImage imageNamed:status.picture];
    } else {
        self.pictureImageView.hidden = YES;
    }
}

- (CGFloat)cellHeight
{
    // 强制布局(目的:让label根据设置的约束计算自己最真实尺寸)
    [self layoutIfNeeded];

    CGFloat cellHeight = 0;

    if (self.status.picture) { // 有配图
        cellHeight = CGRectGetMaxY(self.pictureImageView.frame) + 10;
    } else {
        cellHeight = CGRectGetMaxY(self.text_Label.frame) + 10;
    }

    return cellHeight;
}


@end

xib图解: