IOS中 NSDictionary(字典)排序

按NSDictionary的key來對其進行排序：

先將dict的allkeys賦給一個數組，然後通過sortedArrayUsingComparator:方法對數組排序，然後遍歷數組取字典對應key的值就ok

int i = 0;

    

    NSArray *keys = [dict allKeys];

    NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

       

       return [obj1 compare:obj2 options:NSNumericSearch];

    }];

    for (NSString *categoryId in sortedArray) {

      

   ⋯⋯

       NSLog(@"[dict objectForKey:categoryId] ===%@",[dict objectForKey:categoryId]);

    }