ios-新浪微博

导入素材 plist 和图片

status 封装数据 statuscell 构造cell模块 statusframe 来计算cell的高度 同时也可以把一部分 数据封装和 计算位置 写进去

//
//  HMStatus.h
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface HMStatus : NSObject

@property(nonatomic,copy) NSString *name;
@property(nonatomic,copy) NSString *icon;
@property(nonatomic,copy) NSString *text;
@property(nonatomic,copy) NSString *picture;
@property(nonatomic,assign) BOOL vip;

- (instancetype)initWithDict:(NSDictionary *)dict;
+ (instancetype)statusWithDict:(NSDictionary *)dict;
+ (NSArray *)statuses;


@end

//
//  HMStatus.m
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import "HMStatus.h"

@implementation HMStatus

- (instancetype)initWithDict:(NSDictionary *)dict
{
    self = [super init];
    if (self) {
        [self setValuesForKeysWithDictionary:dict];
    }
    return self;
}

+ (instancetype)statusWithDict:(NSDictionary *)dict
{
    return [[self alloc] initWithDict:dict];
}

+ (NSArray *)statuses
{
    NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"statuses.plist" ofType:nil]];
    NSMutableArray *arrayM = [NSMutableArray array];
    for (NSDictionary *dict in array) {
        [arrayM addObject:[self statusWithDict:dict]];
    }
    
    return arrayM;
}
 
@end

//
//  HMStatusCell.h
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import <UIKit/UIKit.h>
@class HMStatus;
@interface HMStatusCell : UITableViewCell

@property (nonatomic, strong) HMStatus *status;

@end

//
//  HMStatusCell.m
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import "HMStatusCell.h"
#import "HMStatus.h"
/** 姓名字体 */
#define kNameFont   [UIFont systemFontOfSize:14]
/** 正文字体 */
#define kTextFont   [UIFont systemFontOfSize:16]

@interface HMStatusCell()

@property (nonatomic, strong) UIImageView *iconView;
@property (nonatomic, strong) UILabel *nameView;
@property (nonatomic, strong) UIImageView *vipView;
@property (nonatomic, strong) UILabel *textView;
@property (nonatomic, strong) UIImageView *pictureView;

@end

@implementation HMStatusCell


- (UIImageView *)iconView
{
    if (_iconView == nil) {
        _iconView = [[UIImageView alloc] init];
        [self.contentView addSubview:_iconView];
    }
    return _iconView;
}

- (UILabel *)nameView
{
    if (_nameView == nil) {
        _nameView = [[UILabel alloc] init];
        // 默认字体是17号
        _nameView.font = kNameFont;
        [self.contentView addSubview:_nameView];
    }
    return _nameView;
}

- (UIImageView *)vipView
{
    if (_vipView == nil) {
        _vipView = [[UIImageView alloc] init];
        _vipView.image = [UIImage imageNamed:@"vip"];
        _vipView.hidden = YES;
        
        [self.contentView addSubview:_vipView];
    }
    return _vipView;
}

- (UILabel *)textView
{
    if (_textView == nil) {
        _textView = [[UILabel alloc] init];
        _textView.font = kTextFont;
        _textView.numberOfLines = 0;
        
        [self.contentView addSubview:_textView];
    }
    return _textView;
}

- (UIImageView *)pictureView
{
    if (_pictureView == nil) {
        _pictureView = [[UIImageView alloc] init];
        [self.contentView addSubview:_pictureView];
    }
    return _pictureView;
}


- (void)setStatus:(HMStatus *)status
{
    _status = status;
    
    // 1> 设置数据
    [self settingData];
    
    // 2> 设置位置
    [self settingFrame];
}

- (void)settingData
{
    // 头像
    self.iconView.image = [UIImage imageNamed:self.status.icon];
    // 姓名
    self.nameView.text = self.status.name;
    // vip(可选的)
    if (self.status.vip) {
        self.vipView.hidden = NO;
        self.nameView.textColor = [UIColor redColor];
    } else {
        self.vipView.hidden = YES;
        self.nameView.textColor = [UIColor blackColor];
    }
    
    // 正文
    self.textView.text = self.status.text;
    
    // 配图(可选参数)
    // imageNamed:nil CUICatalog: Invalid asset name supplied: (null), or invalid scale factor: 2.000000
    if (self.status.picture.length > 0) {
        self.pictureView.hidden = NO;
        self.pictureView.image = [UIImage imageNamed:self.status.picture];
    } else {
        self.pictureView.hidden = YES;
    }
}

- (void)settingFrame
{
    // 0. 定义间距
    CGFloat padding = 10;
    
    // 1. 头像
    CGFloat iconX = padding;
    CGFloat iconY = padding;
    CGFloat iconW = 30;
    CGFloat iconH = 30;
    self.iconView.frame = CGRectMake(iconX, iconY, iconW, iconH);
    
    // 2. 姓名大小由文字的长度来决定
    // boundingRectWithSize计算给定文本字符串所占的区域
    // 返回值是一个x,y = 0的CGRect,w,h是计算好的宽高
    //
    // 如果要计算多行的准确高度，需要传入NSStringDrawingUsesLineFragmentOrigin选项
    // dict用于指定字体的相关属性的字典，UIKit框架中的第一个头文件
    // context: nil
    NSDictionary *nameDict = @{NSFontAttributeName: kNameFont};
    CGRect nameFrame = [self.status.name boundingRectWithSize:CGSizeMake(MAXFLOAT, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:nameDict context:nil];
    nameFrame.origin.x = CGRectGetMaxX(self.iconView.frame) + padding;
    nameFrame.origin.y = padding + (self.iconView.bounds.size.height - nameFrame.size.height) * 0.5;
    self.nameView.frame = nameFrame;
    
    // vip图标
    CGFloat vipX = CGRectGetMaxX(self.nameView.frame) + padding;
    CGFloat vipY = self.nameView.frame.origin.y;
    CGFloat vipW = 14;
    CGFloat vipH = 14;
    self.vipView.frame = CGRectMake(vipX, vipY, vipW, vipH);
    
    // 正文
    NSDictionary *textDict = @{NSFontAttributeName: kTextFont};
    CGRect textFrame = [self.status.text boundingRectWithSize:CGSizeMake(300, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:textDict context:nil];
    textFrame.origin.x = padding;
    textFrame.origin.y = CGRectGetMaxY(self.iconView.frame) + padding;
    self.textView.frame = textFrame;
    
    CGFloat cellHeight;
    
    if (self.status.picture.length > 0) {
        // 配图
        CGFloat pictureX = padding;
        CGFloat pictureY = CGRectGetMaxY(textFrame) + padding;
        CGFloat pictureW = 100;
        CGFloat pictureH = 100;
        self.pictureView.frame = CGRectMake(pictureX, pictureY, pictureW, pictureH);
        
        cellHeight = CGRectGetMaxY(self.pictureView.frame) + padding;
    } else {
        cellHeight = CGRectGetMaxY(self.textView.frame) + padding;
    }
}

- (void)awakeFromNib {
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

@end

//
//  StatusFrame.h
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@class HMStatus;


@interface StatusFrame : NSObject

@property (nonatomic, assign) CGRect iconf;
@property (nonatomic, assign) CGRect namef;
@property (nonatomic, assign) CGRect vipf;
@property (nonatomic, assign) CGRect textf;
@property (nonatomic, assign) CGRect picturef;

/** 行高 */
@property (nonatomic, assign) CGFloat cellHeight;

/** 所有控件的尺寸都可以通过Status来计算得出 */
@property (nonatomic, strong) HMStatus *status;

/** 所有的statusFrame数据数组 */
+ (NSArray *)statusFrames;

@end

//
//  StatusFrame.m
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import "StatusFrame.h"
#import "HMStatus.h"

/** 姓名字体 */
#define kNameFont   [UIFont systemFontOfSize:14]
/** 正文字体 */
#define kTextFont   [UIFont systemFontOfSize:16]
@implementation StatusFrame

-(void)setStatus:(HMStatus *)status
{
    _status = status;
    
    // 0. 定义间距
    CGFloat padding = 10;
    
    // 1. 头像
    CGFloat iconX = padding;
    CGFloat iconY = padding;
    CGFloat iconW = 30;
    CGFloat iconH = 30;
    self.iconf = CGRectMake(iconX, iconY, iconW, iconH);
    
    // 2. 姓名大小由文字的长度来决定
    // boundingRectWithSize计算给定文本字符串所占的区域
    // 返回值是一个x,y = 0的CGRect,w,h是计算好的宽高
    //
    // 如果要计算多行的准确高度，需要传入NSStringDrawingUsesLineFragmentOrigin选项
    // dict用于指定字体的相关属性的字典，UIKit框架中的第一个头文件
    // context: nil
    NSDictionary *nameDict = @{NSFontAttributeName: kNameFont};
    CGRect nameFrame = [self.status.name boundingRectWithSize:CGSizeMake(MAXFLOAT, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:nameDict context:nil];
    nameFrame.origin.x = CGRectGetMaxX(self.iconf) + padding;
    nameFrame.origin.y = padding + (self.iconf.size.height - nameFrame.size.height) * 0.5;
    self.namef = nameFrame;
    
    // vip图标
    CGFloat vipX = CGRectGetMaxX(self.namef) + padding;
    CGFloat vipY = self.namef.origin.y;
    CGFloat vipW = 14;
    CGFloat vipH = 14;
    self.vipf = CGRectMake(vipX, vipY, vipW, vipH);
    
    // 正文
    NSDictionary *textDict = @{NSFontAttributeName: kTextFont};
    CGRect textFrame = [self.status.text boundingRectWithSize:CGSizeMake(300, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:textDict context:nil];
    textFrame.origin.x = padding;
    textFrame.origin.y = CGRectGetMaxY(self.iconf) + padding;
    self.textf = textFrame;
    
    //CGFloat cellHeight;
    
    if (self.status.picture.length > 0) {
        // 配图
        CGFloat pictureX = padding;
        CGFloat pictureY = CGRectGetMaxY(textFrame) + padding;
        CGFloat pictureW = 100;
        CGFloat pictureH = 100;
        self.picturef = CGRectMake(pictureX, pictureY, pictureW, pictureH);
        
        self.cellHeight = CGRectGetMaxY(self.picturef) + padding;
    } else {
        self.cellHeight = CGRectGetMaxY(self.textf) + padding;
    }

}

+ (NSArray *)statusFrames
{
    NSArray *array = [NSArray arrayWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"statuses.plist" ofType:nil]];
    
    NSMutableArray *arrayM = [NSMutableArray array];
    for (NSDictionary *dict in array) {
        // 要添加statusFrame对象
        StatusFrame *statusFrame = [[StatusFrame alloc] init];
        
        // 实例化一个新的Status模型
        HMStatus *status = [HMStatus statusWithDict:dict];
        
        // 调用自己的setter方法，保存status数据模型，同时计算出所有控件的位置
        statusFrame.status = status;
        
        // 将statusFrame添加到数组
        [arrayM addObject:statusFrame];
    }
    
    return arrayM;
}


@end

//
//  ViewController.h
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UITableViewController


@end

//
//  ViewController.m
//  新浪微博
//
//  Created by YaguangZhu on 15/8/26.
//  Copyright (c) 2015年 YaguangZhu. All rights reserved.
//

#import "ViewController.h"
#import "HMStatus.h"
#import "HMStatusCell.h"
#import "StatusFrame.h"

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

@implementation ViewController

//- (NSArray *)statusFrames
//{
//    if (_statuseFrames ==nil) {
//        _statuseFrames = [StatusFrame statusFrames];
//    }
//    return _statuseFrames;
//}

- (NSArray *)statuses
{
    if (_statuses ==nil) {
        _statuses = [HMStatus statuses];
    }
    return _statuses;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    //return self.statuseFrames.count;
    return self.statuses.count;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *ID =@"cell";
    
   // UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
//    if (cell ==nil) {
//        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID];
//    }
    HMStatusCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    
   if (cell ==nil) {
    cell = [[HMStatusCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:ID];
         }
    
//    HMStatus *status = self.statuses[indexPath.row];
//    cell.textLabel.text =status.name;
    
    
    cell.status = self.statuses[indexPath.row];
    
//    StatusFrame *statusFrame = self.statuseFrames[indexPath.row];
//    cell.status = statusFrame.status;
    return cell;
}

#pragma mark - 代理方法
/** 计算单元格行高 */
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    /**
     计算行高的方法，会在加载表格数据时，有多少行计算多少次 contentSize
     
     问题：此方法执行的时候，cell还没有被实例化！
     但是：行高计算是在实例化cell时，通过设置status属性，计算的=>有了status模型，就可以知道行高！
     
     问题：如何在cell实例化之前，获得行高？
     解决方法：通过status可以计算得到行高！=》再建立一个模型，专门计算所有控件的位置
     */
    
    StatusFrame *statusFrame = [[StatusFrame alloc] init];
    statusFrame.status =self.statuses[indexPath.row];
    return statusFrame.cellHeight;
    
    
    //return 400;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.tableView.rowHeight = 400;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end