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我需要在用checkMark選擇的部分中只有一行。我使用NSFetchresults控制器從核心數據存儲中檢索數據。這裏我有一個擁有選定標誌的實體。目前我在我的didSelectRowAtIndexpath方法中有以下代碼。僅基於核心數據對象選中一行，並帶有複選標記
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:NO];
if (![indexPath section] == 0) {
NSIndexPath *frcIndexPath = [NSIndexPath indexPathForRow:indexPath.row inSection:(indexPath.section - 1)];
SubMenus *subMenus = [self.fetchedResultsController objectAtIndexPath:frcIndexPath];
// Toggle 'selected' state
BOOL isSelected = ![self subMenuIsSelected:subMenus]; //![self cellIsSelected:indexPath];
if ([subMenus.group.maxSelectCount isEqualToNumber:@(1)]) {
DLog(@"Only Select One row in this group/section");
}else {
if (isSelected) {
[tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryCheckmark;
}else {
[tableView cellForRowAtIndexPath:indexPath].accessoryType = UITableViewCellAccessoryNone;
}
}
NSNumber *selectedIndex = [NSNumber numberWithBool:isSelected];
subMenus.selected = selectedIndex;
[subMenus save];
[[CoreDataManager sharedInstance] saveMasterContext];
}
}
如果maxSelectCount的部分爲1，用戶應該只需要選擇一個行的能力。我怎樣才能做到這一點？
Ps。 Selected屬性是BOOl值。