我正在尝试对音乐应用中的数组进行排序:ABCDEFG ...АБВГ...#547368%; 这是排序:
NSString *sortOrder = @"AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZzАаБбВвГгДдЕеЁёЖжЗзИиЙйКкЛлМмНнОоПпРрСсТтУуФфХхЦцЧчШшЩщЭэЮюЯя_0123456789";
NSComparator comp = ^NSComparisonResult(id obj1, id obj2)
{
char char1 = [(NSString *)obj1 characterAtIndex: 0];
char char2 = [(NSString *)obj2 characterAtIndex: 0];
int index1;
for (index1 = 0; index1 < sortOrder.length; index1++)
if ([sortOrder characterAtIndex: index1] == char1)
break;
int index2;
for (index2 = 0; index2 < sortOrder.length; index2++)
if ([sortOrder characterAtIndex: index2] == char2)
break;
if (index1 < index2)
return NSOrderedAscending;
else if (index1 > index2)
return NSOrderedDescending;
else
return [(NSString *)obj1 compare: obj2 options: NSCaseInsensitiveSearch];
};
NSSortDescriptor *sortDescriptor=[[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES comparator:comp];
arrayOfContactsAndCompanies = (NSMutableArray*)[arrayOfContactsAndCompanies sortedArrayUsingDescriptors:@[sortDescriptor]];
但结果是:ABCDEFG(英文字母).. 1235#45(数字)..АБВГ(俄文字母) 将俄语字母变成字母似乎有问题。
答案 0 :(得分:2)
问题是当你从字符串中获取字符时:
char char1 = [(NSString *)obj1 characterAtIndex: 0];
char char2 = [(NSString *)obj2 characterAtIndex: 0];
由于char
(8位)的最大值为127,因此当您尝试为char
分配更大的值时,会出现未定义的行为(俄语字母用16位编码)。
您只需将char
替换为unichar
即可解决您的问题。