我有一个包含两列的表:日期和名称。我使用此代码对元素进行排序:
-(id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
row:(NSInteger)rowIndex {
NSDictionary *itemDictionary = [itemListArray objectAtIndex:rowIndex];
if (aTableColumn == itemName)
return [itemDictionary valueForKey:@"ItemNameBrowser"];
else if (aTableColumn == dateCare)
{
NSDate *date_to_set;
if ([[itemDictionary valueForKey:@"ItemdateCare"] isKindOfClass:[NSString class]])
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterMediumStyle];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
[dateFormatter setLocale:[NSLocale currentLocale]];
date_to_set = [dateFormatter dateFromString:[itemDictionary valueForKey:@"ItemdateCare"]];
}
else
{
date_to_set = [itemDictionary valueForKey:@"ItemdateCare"];
}
return date_to_set;
}
else
return nil;
}
//sorting table view
-(void)tableView:(NSTableView *)tableView sortDescriptorsDidChange: (NSArray *)oldDescriptors
{
[itemListArray sortUsingDescriptors: [tableView sortDescriptors]];
[tableView reloadData];
}
-(void)addItem {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
[dateFormatter setLocale:[NSLocale currentLocale]];
//Valori da aggiungere
NSString *newItemNameBrowser = @"Item";
NSString *newItemDateCare = [NSDate date];
NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
[newItem setValue:newItemNameBrowser forKey:@"ItemNameBrowser"];
[newItem setValue:newItemDateCare forKey:@"ItemdateCare"];
[itemListArray addObject:newItem];
[tableList reloadData];
[dateFormatter release];
}
在 MainMenu.xib 中的列是:
Sort Key ItemName
Selector compare:
和
Sort Key ItemDate
Selector compare:
列名没问题。问题是对日期列进行排序,因为没有正确重新排序日期。元素仅被视为数字。
感谢帮助!