在一个表视图中显示信息，信息是固定的。使用逻辑将选择目录选择特定的空间。代码如下：
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath
*)indexPath {
static NSString *CellIdentifier = @"CellIdentifier";
// intializing tableview cell.
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
}
// Setting tableviewcell title from Room array.
cell.textLabel.text = [NSString stringWithFormat:@"%@",[[arr_roomList
objectAtIndex:indexPath.row] valueForKey:@"description"]];
/* checking the condition if checkedIndexPath is != null.
means at first time checkedIndexPath= null.*/
if (self.checkedIndexPath) {
/* checking the condition if current cell is selected then
we have to show the UITableViewCellAccessoryCheckmark (checkmark on right side of the
cell).*/
if([self.checkedIndexPath isEqual:indexPath])
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else
{
cell.accessoryType = UITableViewCellAccessoryNone;
}
}
else{
if ([[[arr_roomList objectAtIndex:indexPath.row] valueForKey:@"resource_id"]
isEqualToString:self.str_selected_resourceId]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
// This Method will set the Background and Selected Background Image for the cell.
[[AppDelegate sharedInstance] SetBackgroundImageForcell:cell];
if ([[[arr_roomList objectAtIndex:indexPath.row] valueForKey:@"rec_type"] isEqualToString:@"R"]) {
cell.backgroundColor = [UIColor grayColor];
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
/* checking the condition if checkedIndexPath is != null.
means at first time checkedIndexPath= null.*/
if(self.checkedIndexPath)
{
UITableViewCell* uncheckCell = [tableView
cellForRowAtIndexPath:self.checkedIndexPath];
uncheckCell.accessoryType = UITableViewCellAccessoryNone;
}
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
self.checkedIndexPath = indexPath;
[self changeRoomWithResourceId:[[arr_roomList objectAtIndex:indexPath.row]
valueForKey:@"resource_id"]];
}
在往下滚动表视图时，选择目录会随机在单元中自身重复。请帮忙，谢谢。
if ([[[arr_roomList objectAtIndex:indexPath.row] valueForKey:@"resource_id"]
isEqualToString:self.str_selected_resourceId]) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
checkedIndexPath为nil时 多个room的resource_id 都等于self.str_selected_resourceId 会导致
多个cell被标记check mark