基于多个属性对NSArray进行排序

Question

Here's the problem i have :- I have an array

Item1,
Item2,
Item3,
Item4,
Item5,
Item6,
Item7,
....,Item11

I need to sort this array in that specific order ,ofcourse all the values are of type 'NSString'

if i use

sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)

it sorts it like this:-

Item1,
Item10,
Item11,
Item2,
Item3,
Item4,
Item5,
Item6,
Item7,
Item8,
Item9

I can manually extract the numeric value from this but i thought there may be a better way to do this perhaps by using 'NSComparator'.

Answer 1

Use it like this:

NSArray *arry = [[NSArray alloc] initWithObjects:@"Item1",@"Item2",@"Item3",@"Item4",@"Item5",@"Item11",@"Item10",@"Item6", nil];
NSArray *sortedStrings = [arry sortedArrayUsingSelector:@selector(localizedStandardCompare:)];
NSLog(@"sortedStrings---%@",sortedStrings);

Answer 2

NSInteger sortFile(id a, id b, void* context) {
    return [a compare:b options:NSNumericSearch];
}

[yourArray sortedArrayUsingFunction:mySort context:nil];

Answer 3

This code works for me:

NSArray *array = [NSArray arrayWithObjects:@"Item1",
                  @"Item10",
                  @"Item11",
                  @"Item2",
                  @"Item3", nil];

array = [array sortedArrayUsingComparator:^NSComparisonResult(NSString *str1, NSString *str2) {
    return [str1 compare:str2 options:(NSNumericSearch)];
} ];

NSLog(@"%@", array);

Answer 4

Try this:

 NSArray *sortedStrings = [yourArray sortedArrayUsingSelector:@selector(localizedStandardCompare:)];

For more sortedArrayUsingSelector

Answer 5

如果你使用sortedArrayUsingFunction：context，你可以实现你想要的任何功能：