iOS實現(xiàn)折疊單元格

//ViewController.h 中

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property UITableView *tableView;
@property UIButton *button;   
@property NSMutableArray *imageViewArr; 
@property NSMutableArray *labelArr;  
@property BOOL select;    //記錄單元格展開收縮狀態(tài)

@end

//ViewController.m 中

#import "ViewController.h"
#import "ViewTableViewCell.h"
#import "Masonry.h"

@interface ViewController () <UITableViewDelegate, UITableViewDataSource>

@end

@implementation ViewController

- (void)viewDidLoad {
 [super viewDidLoad];
 
 self.view.backgroundColor = [UIColor colorWithWhite:0.92 alpha:1];
 
 _imageViewArr = [[NSMutableArray alloc] initWithObjects:@"1", @"2", @"3", @"4", @"5", nil];
 _labelArr = [[NSMutableArray alloc] initWithObjects:@"發(fā)起群聊", @"添加朋友", @"掃一掃", @"收付款", @"幫助與反饋", nil];
 
 _tableView = [[UITableView alloc] init];
 [self.view addSubview:_tableView];

 _tableView.frame = CGRectMake(100, 100, 130, 35);
 //以下使用Masonry對tableView進(jìn)行約束， 約束不是很規(guī)范 可忽略
// [_tableView mas_makeConstraints:^(MASConstraintMaker *make) {
//  make.height.mas_offset(self.view.frame.size.height * 0.0485);
//  make.width.mas_offset(self.view.frame.size.width * 0.335);
//  make.left.equalTo(self.view.mas_left).offset(self.view.frame.size.width * 0.6);
//  make.top.equalTo(self.view.mas_top).offset(self.view.frame.size.height * 0.046);
//
// }];
 
 _tableView.delegate = self;
 _tableView.dataSource = self;
 [_tableView registerClass:[ViewTableViewCell class] forCellReuseIdentifier:@"cell"];
 
 _button = [UIButton buttonWithType:UIButtonTypeCustom];
 [self.view addSubview:_button];

 [_button mas_makeConstraints:^(MASConstraintMaker *make) {
  make.left.equalTo(_tableView.mas_right).offset(-28);
  make.top.equalTo(_tableView.mas_top).offset(4);
  make.height.mas_offset(self.view.frame.size.height * 0.0495 * 0.68);
  make.width.mas_offset(self.view.frame.size.width * 0.335 * 0.22);
  
 }];
 [_button setImage:[UIImage imageNamed:@"shou"] forState:UIControlStateNormal];
 [_button addTarget:self action:@selector(press) forControlEvents:UIControlEventTouchUpInside];
 //默認(rèn)單元格為收縮 select為0
 _select = 0;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
 return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
 //根據(jù)select的值來判斷收縮展開狀態(tài)，返回相應(yīng)的行數(shù) 
 if(_select == 0) {
  return 1;
 } else {
  return 5;
 }
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
 return 40;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 
 ViewTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
 cell.iimageView.image = [UIImage imageNamed:_imageViewArr[indexPath.row]];
 cell.label.text = [NSString stringWithString:_labelArr[indexPath.row]];
 return cell;
}

//點擊當(dāng)前單元格
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

 //記錄當(dāng)前單元格的imageView 和 Label的內(nèi)容
 NSString *imageViewStr = [NSString stringWithString:_imageViewArr[indexPath.row]];
 NSString *labelStr = [NSString stringWithString:_labelArr[indexPath.row]];

 //將當(dāng)前單元格的內(nèi)容插入可變數(shù)組，作為第一個元素
 [_imageViewArr insertObject:imageViewStr atIndex:0];
 [_labelArr insertObject:labelStr atIndex:0];
 
 //同時刪除可變數(shù)組中當(dāng)前單元格的原本所在位置
 [_imageViewArr removeObjectAtIndex:indexPath.row + 1];
 [_labelArr removeObjectAtIndex:indexPath.row + 1];
 
 //更新tableView
 [_tableView reloadData];
 
 //調(diào)用press方法， 變更tableView的高度 和 button的image
 [self press];
 
}


- (void)press {

 //通過判斷select的值， 判斷單元格的展開與收縮，更改tableView的高度 和 button的image
 if (_select == 0) {
  _select = 1;
  
  _tableView.frame = CGRectMake(100, 100, 130, 200);
  
  //以下使用masonry對tableView進(jìn)行更新約束 （以下代碼為更新tableView的高度）
//  [_tableView mas_updateConstraints:^(MASConstraintMaker *make) {
//   make.height.mas_offset(200);
//  }];

  [_button setImage:[UIImage imageNamed:@"kai"] forState:UIControlStateNormal];
  
 } else {
  _select = 0;
  _tableView.frame = CGRectMake(100, 100, 130, 35);
//  [_tableView mas_updateConstraints:^(MASConstraintMaker *make) {
//   make.height.mas_offset(self.view.frame.size.height * 0.0485);
//  }];

  [_button setImage:[UIImage imageNamed:@"shou"] forState:UIControlStateNormal];
 }
 [_tableView reloadData];
}

@end

// ViewTableViewCell.h 中

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface ViewTableViewCell : UITableViewCell

@property UIImageView *iimageView;
@property UILabel *label;

@end

//ViewTableViewCell.m中

#import "ViewTableViewCell.h"

@implementation ViewTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
 self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
 
 _iimageView = [[UIImageView alloc] init];
 [self.contentView addSubview:_iimageView];
 
 _label = [[UILabel alloc] init];
 [self.contentView addSubview:_label];
 return self;
}

- (void)layoutSubviews {
 [super layoutSubviews];
 _iimageView.frame = CGRectMake(5, 5, 25, 25);
 _label.frame = CGRectMake(37, 5, 80, 25);
 _label.font = [UIFont systemFontOfSize:15];
}

@end