我有一个包含 5 个部分的 TableView ，并且我已将 TableView 选择设置为多个。每个部分都有不同的行数。我想要的是设置用户只能从每个部分中选择一个单元格(在我的表中用户可以选择任意数量的单元格)。 例如:来自 5 个部分的 5 个单元格。
应该不可能从任何部分中选择多个单元格。如果用户从同一部分选择另一个单元格，则应取消选择先前选择的单元格。我怎样才能做到这一点。这是 didSelectRowAtIndexPath 的示例实现。
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
HoteldetalcelloneTableViewCell *cellone = (HoteldetalcelloneTableViewCell *)[self.detailtableView cellForRowAtIndexPath:indexPath];
HoteldetailcelltwoTableViewCell *celltwo = (HoteldetailcelltwoTableViewCell *)[self.detailtableView cellForRowAtIndexPath:indexPath];
//I have implement for two sections to test.
if(indexPath.section == 0)
{
HotelDetailsone *secone = [roomonearray objectAtIndex:indexPath.row];
HoteldetailsforBooking *book = [HoteldetailsforBooking new];
if([secone.offerallow isEqualToString:@"True"])
{
celltwo.selectedsignLabel.hidden = NO;
}
else
{
cellone.selectedsignLabelone.hidden = NO;
}
// [self.detailtableView reloadData];
NSLog(@"price for room 1 : %@", secone.itempriceText);
}
else
{
HotelDetailsone *sectwo = [roomtwoarray objectAtIndex:indexPath.row];
HoteldetailsforBooking *book = [HoteldetailsforBooking new];
if([sectwo.offerallow isEqualToString:@"True"])
{
celltwo.selectedsignLabel.hidden = NO;
}
else
{
cellone.selectedsignLabelone.hidden = NO;
}
// [self.detailtableView reloadData];
NSLog(@"price for room 1 : %@", sectwo.itempriceText);
}
}
最佳答案
您需要跟踪单元格的选择。因此，您需要将选定的 indexpath 存储在数组中。
在 ViewController.h 中声明这样的属性
@property(nonatomic,strong) NSMutableDictionary *selectionData;
现在在 ViewController.m
- (void)viewDidLoad {
[super viewDidLoad];
self.selectionData=[[NSMutableDictionary alloc]init];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
TestTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"mycell"];
if ([self.selectionData objectForKey:[NSString stringWithFormat:@"%ld",(long)indexPath.section] ] != nil) {
NSMutableArray *sectionData=[[self.selectionData objectForKey:[NSString stringWithFormat:@"%ld",(long)indexPath.section]] mutableCopy];
if (![sectionData containsObject:[NSNumber numberWithLong:indexPath.row]])
{
cell.accessoryType = UITableViewCellAccessoryNone;
cell.numberlabel.text = @"2";
}
else
{
cell.numberlabel.text = @"***";
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}
}
else
{
cell.numberlabel.text = @"2";
cell.accessoryType = UITableViewCellAccessoryNone;
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"selected section :%li ---> selected row :%li",(long)indexPath.section, (long)indexPath.row);
[self handleSelectionForSection:indexPath.section row:indexPath.row];
[self.tablev reloadData];
}
-(void)handleSelectionForSection:(long)sectionIndex row:(long)rowIndex
{
if ([self.selectionData objectForKey:[NSString stringWithFormat:@"%ld",sectionIndex] ] != nil) {
NSMutableArray *sectionData=[[self.selectionData objectForKey:[NSString stringWithFormat:@"%ld",sectionIndex]] mutableCopy];
if (![sectionData containsObject:[NSNumber numberWithLong:rowIndex]])
{
//removing previous selected rows
[sectionData removeAllObjects];
[sectionData addObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:@"%ld",sectionIndex]];
}
else
{
//cell you tapped is already selected,
// you can deselect it by removing object
//if you dont want to deselect it comment following lines
[sectionData removeObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:@"%ld",sectionIndex]];
}
}
else
{
//section key not available so we need to create it
NSMutableArray *sectionData=[[NSMutableArray alloc]init];
[sectionData addObject:[NSNumber numberWithLong:rowIndex]];
[self.selectionData setObject:sectionData forKey:[NSString stringWithFormat:@"%ld",sectionIndex]];
}
NSLog(@"All Selection : %@",self.selectionData);
}
您的 numberOfRowsInSection、numberOfSectionsInTableView 和 titleForHeaderInSection 将保持不变。
如果您有任何疑问，请告诉我。
关于ios - 如何在 iOS、Objective C 中的 TableView 的每个部分中仅实现单个单元格选择，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38221297/