10.13TableView3 展开和删除 二级联动

点击cell后展开和删除 联动

#import "ViewController.h"
#import "CustomTableViewCell.h"

@interface ViewController ()<UITableViewDelegate,UITableViewDataSource,CustomTableViewCellDelegate>
{
    UITableView *_tableView;
    NSMutableArray *_datas;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    //因为有两个索引，所以我们建一个数组
    _datas = @[@0,@0].mutableCopy;
    
    _tableView = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStylePlain];
    _tableView.delegate = self;
    _tableView.dataSource = self;
    [self.view addSubview:_tableView];
    [_tableView registerClass:[CustomTableViewCell class] forCellReuseIdentifier:@"cell"];
   
//    NSLog(@"-->%@",[_tableView subviews]);
}


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

    return _datas.count;
}

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

    CustomTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    cell.delegate = self;
    if([_datas[indexPath.row] isEqual:@0]||[_datas[indexPath.row] isEqual:@1]){
    
        //索引等于0和1的时候
        cell.textLabel.text = @"项目";
        cell.textLabel.textColor = [UIColor blackColor];
        cell.backgroundColor = [UIColor grayColor];
    }else{
        //索引不等0和1的时候
        cell.backgroundColor = [UIColor blackColor];
        cell.textLabel.textColor = [UIColor whiteColor];
        cell.textLabel.text = @"开工······";
    }
    return cell;
}



- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    //判断展开
    if([_datas[indexPath.row]isEqual:@0]){//exp
    
        NSMutableArray *indexPaths = [NSMutableArray array];
        for (NSInteger i = 1; i<4; i++) {
            
            [_datas insertObject:@2 atIndex:indexPath.row+1];
            NSIndexPath *customIndexPath = [NSIndexPath indexPathForRow:(indexPath.row+i) inSection:0];
            [indexPaths addObject:customIndexPath];
        }
        //在索引的地方插入，并展开动画
        [tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationTop];
      
#if 0
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.35 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            
            dispatch_async(dispatch_get_main_queue(), ^{
                
               [tableView reloadData];
            });
        });
#endif
        
        _datas[indexPath.row] = @1;
        
        return;
    }
    //判断关闭（删除）
    if([_datas[indexPath.row]isEqual:@1]){//close
    
        NSMutableArray *indexPaths = [NSMutableArray array];
        for (NSInteger i = 1; i<4; i++) {
            
            [_datas removeObjectAtIndex:indexPath.row+1];
            NSIndexPath *customIndexPath = [NSIndexPath indexPathForRow:(indexPath.row+i) inSection:0];
            [indexPaths addObject:customIndexPath];
        }
        
        [tableView deleteRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationBottom];
        _datas[indexPath.row] = @0;
        
        return;
    }
   
    if(![_datas[indexPath.row]isEqual:@0] && ![_datas[indexPath.row]isEqual:@1]){
        
        NSLog(@"*");
    }
   
}


@end

效果如下：

Paste_Image.png

如果你的产品经理已经规定了label需要的颜色字体，我们在扩###展的时候就不要把它暴露出去，要固化。我们写一个扩展。

新建CustomTableViewCell

CustomTableViewCell.h

#import <UIKit/UIKit.h>

@protocol CustomTableViewCellDelegate <NSObject>

@optional
- (void)tableViewCell:(UITableViewCell*)cell Clicked:(NSIndexPath*)indexPath;
@end

@interface CustomTableViewCell : UITableViewCell

//@property (nonatomic,strong)UILabel *contentLabel;   接口暴露，没有固化
@property (nonatomic,copy)NSString *contentString;
@property (nonatomic,weak)id <CustomTableViewCellDelegate> delegate;
@end

CustomTableViewCell.m

#import "CustomTableViewCell.h"


@interface CustomTableViewCell ()
{
    UILabel *_contentLabel;
    UIButton *_button;
}
@end

@implementation CustomTableViewCell

- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{

    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
    if (self) {
        
        _contentLabel = [UILabel new];
        [self.contentView addSubview:_contentLabel];
        _contentLabel.frame  = CGRectMake(5, 5, 100, 30);
        _contentLabel.backgroundColor = [UIColor redColor];
        
        _button = [UIButton buttonWithType:UIButtonTypeCustom];
        [_button setTitle:@"button" forState:UIControlStateNormal];
        _button.backgroundColor = [UIColor blueColor];
        [_button setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
        [_button addTarget:self action:@selector(buttonCliced:) forControlEvents:UIControlEventTouchUpInside];
        _button.frame = CGRectMake(200, 5, 100, 20);
        [self.contentView addSubview:_button];
    }
    
    return self;
}

- (void)buttonCliced:(UIButton*)sender{

    CGPoint point = [sender convertPoint:CGPointZero toView:[self findTableView]];
    
    //找到索引位置就可以传值出去，可是没有TableView怎么传？
    //我们用下面的那个findTableView自己写的方法递归查找到UITableView
    NSIndexPath *indexPath = [[self findTableView] indexPathForRowAtPoint:point];
    if([self.delegate respondsToSelector:@selector(tableViewCell:Clicked:)]){
        
        [self.delegate tableViewCell:self Clicked:indexPath];
    }
//    NSLog(@"--->%@",[self findTableView]);
}

- (UITableView*)findTableView{

    UIResponder *responder = self;
    //从cell出发往父视图递归查找，直到找到UITableView
    while (![responder isKindOfClass:[UITableView class]]) {
        
        responder = responder.nextResponder;
    }
    
    return (UITableView*)responder;
}


- (void)setContentString:(NSString *)contentString{

    _contentLabel.text = contentString;
}

- (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

在ViewController.m中实现

- (void)tableViewCell:(UITableViewCell *)cell Clicked:(NSIndexPath *)indexPath{
    
    NSLog(@"%ld",indexPath.row);
}

编译运行，结果如下：

Paste_Image.png

没有暴露接口，也不需要填什么数据，直接使用。