【发布时间】：2012-12-27 09:12:24
【问题描述】：
我有一个表格视图，我使用的是custom cell。我在每个名为“编辑”和“取消”的表格视图单元格上有两个按钮，它们在cellForRow 中都有图像。我想要的是，当用户同时单击编辑按钮时，相同的行取消按钮应该更改其图像。代码正在运行，但它没有更改相同的行取消按钮图像。它改变了另一行取消按钮图像。如何维护每个按钮的状态。
这是代码
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
simpleTableIdentifier = @"MenuNameCell";
MenuNameCell *cell = (MenuNameCell *)[tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell== nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:@"MenuNameCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
NSLog(@"---------new cell agin");
}
else
[cell.contentView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];
// Creating Label Menu Name
_nameLabel = [[UILabel alloc] initWithFrame:CGRectMake(8, 11, 82, 21)];
_nameLabel.backgroundColor = [UIColor clearColor];
_nameLabel.text = [_hotel._orderedMenus objectAtIndex:indexPath.row];
// Creating Label Menu Cost
_amountMenu = [[UILabel alloc] initWithFrame:CGRectMake(167, 13, 44, 21)];
_amountMenu.backgroundColor = [UIColor clearColor];
_amountMenu.text = [[_hotel._menuPrices objectAtIndex:indexPath.row] stringValue];
// Creating Text Field For Order Quantity
_textFieldQuantity = [[UITextField alloc] initWithFrame:CGRectMake(125,14,42,21)];
_textFieldQuantity.userInteractionEnabled = NO;
_textFieldQuantity.text = [[_hotel._selectedQuantity objectAtIndex:indexPath.row] stringValue];
//Creating Button For CANCEL Order
_cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_cancelButton setFrame:CGRectMake(265, 13, 25, 28)];
[_cancelButton setBackgroundImage:[UIImage imageNamed:@"cancel.png"] forState:UIControlStateNormal];
[_cancelButton setTag:indexPath.row];
[_cancelButton addTarget:self action:@selector(cancelOreder:) forControlEvents:UIControlEventTouchUpInside];
// Creating Button For Check Order
_checkButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_checkButton setFrame:CGRectMake(232, 13, 25, 28)];
[_checkButton setTag:indexPath.row];
[_checkButton setBackgroundImage:[UIImage imageNamed:@"edit.png"]forState:UIControlStateNormal];
[_checkButton addTarget:self action:@selector(editQuantity:) forControlEvents:UIControlEventTouchUpInside];
// Adding All To Content View
[cell.contentView addSubview:_nameLabel];
[cell.contentView addSubview:_amountMenu];
[cell.contentView addSubview:_textFieldQuantity];
[cell.contentView addSubview:_checkButton];
[cell.contentView addSubview:_cancelButton];
//objc_setAssociatedObject(_checkButton, iindex, indexPath,OBJC_ASSOCIATION_RETAIN );
return cell;
}
-(void)editQuantity:(id)sender{
NSLog(@"count of the array is----%d",[imageViewArray count]);
button = (UIButton *)sender;
row = button.tag;
NSLog(@"---rowww%d",row);
_textFieldQuantity.userInteractionEnabled = YES;
UIImage *buttonImage = [UIImage imageNamed:@"edit_over.png"];
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
UIImage *buttonImageCancel = [UIImage imageNamed:@"check.png"];
[_cancelButton setBackgroundImage:buttonImageCancel forState:UIControlStateNormal];
_cancelButton.tag = 0;
}
-(void)cancelOreder:(id)sender{
button = (UIButton *)sender;
row = button.tag;
NSLog(@"The Row Selected iS At Cancel Order ISSSS----%d", row);
if (_cancelButton.tag == 0){
_textFieldQuantity.userInteractionEnabled = NO;
UIImage *buttonImageCancel = [UIImage imageNamed:@"check_over.png"];
[_cancelButton setBackgroundImage:buttonImageCancel forState:UIControlStateNormal];
UIImage *buttonImageCancel1 = [UIImage imageNamed:@"cancel.png"];
[_cancelButton setBackgroundImage:buttonImageCancel1 forState:UIControlStateNormal];
UIImage *buttonImage = [UIImage imageNamed:@"edit.png"];
[_checkButton setBackgroundImage:buttonImage forState:UIControlStateNormal];
_cancelButton.tag = 1;
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"iHomeDelivery" message:@"Do You Want To Cancel the Order" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
[alert release];
}
}
【问题讨论】：
-
为什么不将按钮放在自定义单元格中，让单元格管理状态。那么只需将按下的按钮委托给您的视图控制器？
-
您的解决方案很好。但是当我试图做这个应用程序在滚动时崩溃
-
失败点在哪里？你得到什么错误？您可以发布使用带有按钮的单元格时的代码吗？
-
我通过anushs方法得到了解决方案
-
如果@anusha 的回答对你有帮助，那么就接受她的回答，这样以后其他人就能看到真正的答案
标签： objective-c uitableview ios5