字段排序 拼接key value

-(NSString *)KEYSort:(NSMutableDictionary *)dict{

    NSArray *arr=[dictallKeys];

    NSArray *newArray = [arrsortedArrayUsingSelector:@selector(compare:)];

    NSLog(@"new array = %@",newArray);

    NSMutableString *str=[[NSMutableStringalloc]init];

    for (NSString *keyin  newArray) {

    NSString  *value= [dictobjectForKey:key];

        NSString *kv=[NSStringstringWithFormat:@"%@%@",key,value];

        [str appendString:kv];

    }

    //NSLog(@"----%@----",str);

    return str;

}