Iphone 单击自定义单元格中的按钮时如何更改该单元格中的标签文本
我已经创建了一个带有标签和按钮的自定义tableView。在单元格中单击按钮时,我只想更改该单元格中的标签文本。我的问题是当我点击按钮时,其他单元格中相应的标签也会发生变化。这是我的密码Iphone 单击自定义单元格中的按钮时如何更改该单元格中的标签文本,iphone,uitableview,Iphone,Uitableview,我已经创建了一个带有标签和按钮的自定义tableView。在单元格中单击按钮时,我只想更改该单元格中的标签文本。我的问题是当我点击按钮时,其他单元格中相应的标签也会发生变化。这是我的密码 -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ static NSString *CellIdentifier=@"CellIdentifier"; U
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier=@"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: CellIdentifier];
if (cell == nil) { cell = [[[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier: CellIdentifier] autorelease];
UILabel *labelOne = [[UILabel alloc]initWithFrame:CGRectMake(70, 10, 100, 20)];
labelOne.tag = 100;
labelOne.backgroundColor=[UIColor clearColor];
labelOne.font=[UIFont systemFontOfSize:14];
[cell.contentView addSubview:labelOne];
[labelOne release];
UIButton *minusbutton=[[UIButton alloc]initWithFrame:CGRectMake(152, 5, 15, 20)];
minusbutton.backgroundColor=[UIColor clearColor];
[minusbutton addTarget:self action:@selector(DecreaseTickets:) forControlEvents:UIControlEventTouchUpInside];
[minusbutton setTitle:@"-" forState:UIControlStateNormal];
[minusbutton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[minusbutton setBackgroundImage:[UIImage imageNamed:@"button-green1.png"] forState:UIControlStateNormal];
[cell.contentView addSubview:minusbutton];
[minusbutton release];
UILabel *quantity = [[UILabel alloc]initWithFrame:CGRectMake(170, 5, 20, 20)];
quantity.tag = 103;
quantity.backgroundColor=[UIColor clearColor];
quantity.font=[UIFont systemFontOfSize:12];
[cell.contentView addSubview:quantity];
[quantity release];
UIButton *addbutton=[[UIButton alloc]initWithFrame:CGRectMake(192, 5, 15, 20)];
addbutton.backgroundColor=[UIColor clearColor];
[addbutton addTarget:self action:@selector(IncreaseTickets:) forControlEvents:UIControlEventTouchUpInside];
[addbutton setTitle:@"+" forState:UIControlStateNormal];
[addbutton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[addbutton setBackgroundImage:[UIImage imageNamed:@"button-green1.png"] forState:UIControlStateNormal];
[cell.contentView addSubview:addbutton];
[addbutton release];
UILabel *labelTwo = [[UILabel alloc]initWithFrame:CGRectMake(260, 10, 140, 20)];
labelTwo.tag = 101;
labelTwo.backgroundColor=[UIColor clearColor];
labelTwo.font=[UIFont systemFontOfSize:14];
labelTwo.textColor=[UIColor colorWithRed:0.25098 green:0.447059 blue:0.07451 alpha:1];
[cell.contentView addSubview:labelTwo];
[labelTwo release];
UILabel *label3 = [[UILabel alloc]initWithFrame:CGRectMake(70, 30, 230, 30)];
label3.tag = 102;
label3.backgroundColor=[UIColor clearColor];
label3.numberOfLines=2;
label3.font=[UIFont systemFontOfSize:12];
[cell.contentView addSubview:label3];
[label3 release];
}
UILabel *labelOne = (UILabel *) [cell.contentView viewWithTag:100];
NSString *ss2=[[NSString alloc]initWithFormat:@"%@",[[eventTicketListArray objectAtIndex:indexPath.row ]tit] ];
labelOne.text = ss2;
UILabel *labelTwo = (UILabel *) [cell.contentView viewWithTag:101];
labelTwo.text = [[NSString alloc]initWithFormat:@"%@",[[eventTicketListArray objectAtIndex:indexPath.row ]price] ];
UILabel *label3 = (UILabel *) [cell.contentView viewWithTag:102];
label3.text=[[NSString alloc]initWithFormat:@"%@",[[eventTicketListArray objectAtIndex:indexPath.row ]desc ] ];
UILabel *label4 = (UILabel *) [cell.contentView viewWithTag:103];
label4.text=[[NSString alloc]initWithFormat:@"%d",qty];
}
return cell;
}
现在我希望当我点击addbutton时,单元格的数量增加。这是我的按钮点击事件
-(void)IncreaseTickets:(id)sender{
NSIndexPath *indexPath =[ticketTable indexPathForCell:(UITableViewCell *)[[sender superview] superview]];
//NSUInteger row = indexPath.row;
UITableViewCell *currentCell = (UITableViewCell *)[[sender superview] superview] ;
UILabel *label4 = (UILabel *) [currentCell.contentView viewWithTag:103];
label4.text=[[[NSString alloc]initWithFormat:@"%d",qty++] ;
//NSLog(@"%d",row);
[ticketTable reloadData];
}
但问题是当我点击按钮时,所有单元格的数量都会增加。请指导我怎么做。任何帮助都将不胜感激 当你打电话时
[ticketTable reloadData];
重新加载所有数据并再次初始化表
UITable magic是重用几个分配的单元格,即所需的最小单元格数:屏幕上一段时间内的可视单元格,然后在滚动时,您应该使用新的数据设置重用它们,通常在表数据委托中使用NSArray
和:在哪里定义数量?这似乎是一个全局变量,而不是每个单元格的变量
您最好阅读一些苹果示例代码或一些教程这样设置条件。。
在全局变量NSUInteger myRow上设置
myRow = indexPath.row;//Set Selected index path.
在cellForRowAtIndexPath中设置条件
if(myRow == indexPath.row)
{
NSUInteger newqty = qty + 1;
UILabel *label4 = (UILabel *) [cell.contentView viewWithTag:103];
label4.text=[[NSString alloc]initWithFormat:@"%d",newqty];
}
esle
{
UILabel *label4 = (UILabel *) [cell.contentView viewWithTag:103];
label4.text=[[NSString alloc]initWithFormat:@"%d",qty];
}
并为此设置一些逻辑。您最好编写一个自定义单元格,其中包含按钮和标签。然后,该单元处理按钮按下,并使用代理向控制器发回信号。
if(myRow == indexPath.row)
{
NSUInteger newqty = qty + 1;
UILabel *label4 = (UILabel *) [cell.contentView viewWithTag:103];
label4.text=[[NSString alloc]initWithFormat:@"%d",newqty];
}
esle
{
UILabel *label4 = (UILabel *) [cell.contentView viewWithTag:103];
label4.text=[[NSString alloc]initWithFormat:@"%d",qty];
}