点击单个cell高度变化的动画效果

//
//  Model.h
//  TableViewTapAnimation
//
//  Created by YouXianMing on 15/9/18.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

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

@interface Model : NSObject

@property (nonatomic) CGFloat  normalHeight;
@property (nonatomic) CGFloat  expendHeight;
@property (nonatomic) BOOL     expend;

+ (instancetype)ModelWithNormalHeight:(CGFloat)normalHeight expendHeight:(CGFloat)expendHeight expend:(BOOL)expend;

@end

//
//  Model.m
//  TableViewTapAnimation
//
//  Created by YouXianMing on 15/9/18.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import "Model.h"

@implementation Model

+ (instancetype)ModelWithNormalHeight:(CGFloat)normalHeight expendHeight:(CGFloat)expendHeight expend:(BOOL)expend {

    Model *model = [[Model alloc] init];
    
    model.normalHeight = normalHeight;
    model.expendHeight = expendHeight;
    model.expend       = expend;
    
    return model;
}

@end

//
//  InfoCell.h
//  TableViewTapAnimation
//
//  Created by YouXianMing on 15/9/18.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "Model.h"

@interface InfoCell : UITableViewCell

@property (nonatomic, weak) NSIndexPath  *indexPath;
@property (nonatomic, weak) UITableView  *tableView;

- (void)loadData:(id)data;

@end

//
//  InfoCell.m
//  TableViewTapAnimation
//
//  Created by YouXianMing on 15/9/18.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import "InfoCell.h"

@interface InfoCell ()

@property (nonatomic, strong) UIButton *button;
@property (nonatomic, weak)   Model    *model;
@property (nonatomic, strong) UIView   *lineView;
@property (nonatomic, strong) UILabel  *infoLabel;

@end

@implementation InfoCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
    
    if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
        
        [self setup];
    }
    
    return self;
}

- (void)setup {
    
    self.selectionStyle = UITableViewCellSelectionStyleNone;
    
    self.button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 320, 100)];
    [self.button addTarget:self action:@selector(buttonEvent) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:self.button];
    
    self.lineView                 = [[UIView alloc] initWithFrame:CGRectMake(0, 49.5, 320, 0.5f)];
    self.lineView.backgroundColor = [[UIColor redColor] colorWithAlphaComponent:0.5f];
    [self addSubview:self.lineView];
    
    self.infoLabel      = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 100, 50)];
    self.infoLabel.text = @"Demo";
    [self addSubview:self.infoLabel];
}

- (void)buttonEvent {
    
    if (self.model.expend == YES) {
        
        self.model.expend = NO;
        [self.tableView beginUpdates];
        [self.tableView endUpdates];
        
        [self normalStateWithAnimated:YES];
        
    } else {
        
        self.model.expend = YES;
        [self.tableView beginUpdates];
        [self.tableView endUpdates];
    
        [self expendStateWithAnimated:YES];
    }
}

- (void)loadData:(id)data {
    
    self.model = data;
    
    if (self.model.expend == YES) {
        
        self.lineView.frame  = CGRectMake(0, 99.5f, 320, 0.5f);
        self.infoLabel.frame = CGRectMake(30, 0, 100, 50);
        
    } else {
    
        self.lineView.frame  = CGRectMake(0, 49.5, 320, 0.5f);
        self.infoLabel.frame = CGRectMake(10, 0, 100, 50);
    }
}

- (void)normalStateWithAnimated:(BOOL)animated {
    
    if (animated == YES) {
        
        [UIView animateWithDuration:0.35f animations:^{
            
            self.lineView.frame  = CGRectMake(0, 49.5, 320, 0.5f);
            self.infoLabel.frame = CGRectMake(10, 0, 100, 50);
        }];
        
    } else {
    
        self.lineView.frame  = CGRectMake(0, 49.5, 320, 0.5f);
        self.infoLabel.frame = CGRectMake(10, 0, 100, 50);
    }
}

- (void)expendStateWithAnimated:(BOOL)animated {
    
    if (animated == YES) {
        
        [UIView animateWithDuration:0.35f animations:^{
            
            self.lineView.frame  = CGRectMake(0, 99.5f, 320, 0.5f);
            self.infoLabel.frame = CGRectMake(30, 0, 100, 50);
        }];
        
    } else {
        
        self.lineView.frame  = CGRectMake(0, 99.5f, 320, 0.5f);
        self.infoLabel.frame = CGRectMake(30, 0, 100, 50);
    }
}

@end

//
//  ViewController.m
//  TableViewTapAnimation
//
//  Created by YouXianMing on 15/9/18.
//  Copyright © 2015年 YouXianMing. All rights reserved.
//

#import "ViewController.h"
#import "InfoCell.h"
#import "Model.h"

#define INFO_CELL @"INFO_CELL"

@interface ViewController () <UITableViewDelegate, UITableViewDataSource>

@property (nonatomic, strong) NSMutableArray *datasArray;
@property (nonatomic, strong) UITableView    *tableView;

@end

@implementation ViewController

- (void)viewDidLoad {
    
    [super viewDidLoad];
    
    self.datasArray = [NSMutableArray array];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:NO]];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:YES]];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:YES]];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:YES]];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:YES]];
    [self.datasArray addObject:[Model ModelWithNormalHeight:50.f expendHeight:100.f expend:YES]];
    
    self.tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
    self.tableView.delegate       = self;
    self.tableView.dataSource     = self;
    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    [self.tableView registerClass:[InfoCell class] forCellReuseIdentifier:INFO_CELL];
    [self.view addSubview:self.tableView];
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return _datasArray.count;
}

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

    InfoCell *cell = [tableView dequeueReusableCellWithIdentifier:INFO_CELL];
    cell.indexPath = indexPath;
    cell.tableView = tableView;
    
    [cell loadData:_datasArray[indexPath.row]];
    
    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

    Model *model = _datasArray[indexPath.row];
    
    if (model.expend) {
        
        return model.expendHeight;
        
    } else {
    
        return model.normalHeight;
    }
}

@end