一个朋友问我:我在每个cell中都添加了两个按钮(记为btnA和btnB),点击btnA时,对应的cell中添加一个子控件,再点击btnB时,对应的cell中的子控件就移除,怎么做到?

 

百度了一下,发现了解决办法:

首先,创建btn时,给每个btn加一个tag值

//创建cell方法-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString * iden=@"iden";    _cell=[tableView dequeueReusableCellWithIdentifier:iden];    if (_cell==nil) {        _cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:iden];    }        UIButton * btnA=[UIButton buttonWithType:UIButtonTypeCustom];    btnA.frame=CGRectMake(0, 0, 50, 20);    btnA.tag = 1000 + indexPath.row;    btnA.backgroundColor=[UIColor greenColor];    [btnA addTarget:self action:@selector(btnBClick:) forControlEvents:UIControlEventTouchUpInside];        [_cell.contentView addSubview:btnA];        UIButton * btnB=[UIButton buttonWithType:UIButtonTypeCustom];    btnB.tag = 2000 + indexPath.row;    btnB.frame=CGRectMake(100, 0, 50, 20);    btnB.backgroundColor=[UIColor redColor];    [btnB addTarget:self action:@selector(btnAClick:) forControlEvents:UIControlEventTouchUpInside];    [_cell.contentView addSubview:btnB];    return _cell;}

1 //添加子控件按钮代码 2 -(void)btnBClick:(UIButton *)btn 3 { 4     NSString * path=[[NSBundle mainBundle]pathForResource:@"1" ofType:@"mp4"]; 5     NSURL * url=[NSURL fileURLWithPath:path]; 6     _mp=[[MPMoviePlayerViewController alloc]initWithContentURL:url]; 7     _mp.view.backgroundColor=[UIColor purpleColor]; 8     _mp.moviePlayer.controlStyle=MPMovieControlStyleDefault; 9     10     _mp.view.frame=CGRectMake(0, 0, self.view.frame.size.width, 200);11     NSIndexPath *indexPath = [NSIndexPath indexPathForRow:btn.tag - 1000 inSection:0];12     UITableViewCell *cell = [_tableView cellForRowAtIndexPath:indexPath];// 竟然还有这个方法,第一次用13     [cell.contentView addSubview:_mp.view];14     [_tableView reloadData];15 }

1 //移除子控件按钮代码 2 -(void)btnAClick:(UIButton *)btn 3 { 4     NSIndexPath *indexPath = [NSIndexPath indexPathForRow:btn.tag - 2000 inSection:0]; 5     UITableViewCell *cell = [_tableView cellForRowAtIndexPath:indexPath]; 6     if ([cell.contentView.subviews containsObject:_mp.view]) { 7         [_mp.view removeFromSuperview]; 8     } 9     else10         return;11 }

给添加了红色的几行代码,就搞定了!

 

我去，这个方法亮了，我已经被闪瞎了！

NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath]; cell.detailTextLabel.text= [self.dateFormatter stringFromDate:self.pickerView.date];