遇到的需求如下

需求需要對(duì)住宿類型進(jìn)行添加覆糟，有多個(gè)需要商戶輸入的元素，比如價(jià)格馋记，時(shí)間，房間類型懊烤，圖片......
在這個(gè)情況下肯定選用tableView來(lái)實(shí)現(xiàn)梯醒，但是tableViewCell的復(fù)用會(huì)導(dǎo)致數(shù)據(jù)的錯(cuò)亂，如果不復(fù)用又會(huì)內(nèi)存消耗比較大奸晴，如果找到復(fù)用cell且數(shù)據(jù)不錯(cuò)亂的方法就成了最優(yōu)選擇。

這個(gè)問(wèn)題其實(shí)只需要找到tableView的代理方法就行了日麸。

//cell移出屏幕顯示是回調(diào)的代理
- (void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath NS_AVAILABLE_IOS(6_0);

在這個(gè)代理里面更新cell的數(shù)據(jù)到對(duì)應(yīng)的model中即可寄啼。
ViewController.m代碼如下

#import "ViewController.h"
#import "InputTableViewCell.h"
#import "RoomModel.h"

static NSString *identifier = @"cell";

@interface ViewController ()<UITableViewDelegate, UITableViewDataSource>

@property (weak, nonatomic) IBOutlet UITableView *mainTB;

@property (nonatomic, strong) NSMutableArray *rooms;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.mainTB.rowHeight = 200;
    
    self.rooms = [[NSMutableArray alloc]init];
    
    for (NSInteger i = 0; i < 30; i++) {
        RoomModel *model = [[RoomModel alloc]init];
        model.name = @"";
        model.price = @"";
        [self.rooms addObject:model];
    }
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    return 30;
}


- (void)tableView:(UITableView *)tableView didEndDisplayingCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath*)indexPath{
    RoomModel *model = self.rooms[indexPath.row];
    
    InputTableViewCell *inputCell = (InputTableViewCell *)cell;
    
    model.name = inputCell.nameTF.text;
    model.price = inputCell.priceTF.text;
    
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    InputTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
    if (cell == nil) {
        cell = [[InputTableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
    }
    cell.indexLabel.text = [NSString stringWithFormat:@"%ld", indexPath.row + 1];
    
    RoomModel *model = self.rooms[indexPath.row];
    cell.nameTF.text = model.name;
    cell.priceTF.text = model.price;
    
    return cell;
}


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


@end

RoomModel類代碼如下

//RoomModel.h
#import <Foundation/Foundation.h>

@interface RoomModel : NSObject

@property (nonatomic, copy) NSString *name;
@property (nonatomic, strong) NSString *price;

@end


//RoomModel.m
#import "RoomModel.h"

@implementation RoomModel

@end

InputTableViewCell類代碼如下

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

@interface InputTableViewCell : UITableViewCell

@property (nonatomic, strong) UITextField *nameTF;
@property (nonatomic, strong) UITextField *priceTF;

@property (nonatomic, strong) UILabel *indexLabel;

@end

//InputTableViewCell.m
#import "InputTableViewCell.h"
#import "Masonry.h"

@implementation InputTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        self.indexLabel = [[UILabel alloc]init];
        [self.contentView addSubview:self.indexLabel];
        
        self.nameTF = [[UITextField alloc]init];
        self.nameTF.borderStyle = UITextBorderStyleRoundedRect;
        [self.contentView addSubview:self.nameTF];
        
        self.priceTF = [[UITextField alloc]init];
        self.priceTF.borderStyle = UITextBorderStyleRoundedRect;
        [self.contentView addSubview:self.priceTF];
        
        [self.indexLabel mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.top.bottom.equalTo(self.contentView).offset(0);
            make.width.equalTo(@30);
        }];
        
        [self.nameTF mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(self.indexLabel.mas_right).offset(8);
            make.top.equalTo(self.contentView).offset(8);
            make.right.equalTo(self.contentView).offset(-8);
            make.bottom.equalTo(self.priceTF.mas_top).offset(-8);
            make.height.equalTo(self.priceTF.mas_height);
        }];
        
        [self.priceTF mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.equalTo(self.indexLabel.mas_right).offset(8);
            make.right.bottom.equalTo(self.contentView).offset(-8);
        }];
        
    }
    return self;
}

- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

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

    // Configure the view for the selected state
}

@end

這樣就通過(guò)復(fù)用TableViewCell來(lái)實(shí)現(xiàn)數(shù)據(jù)的管理，多看一下TableView的方法代箭，也許問(wèn)題就很簡(jiǎn)單了墩划。

示例工程