从数据数组中提取唯一对象 [英] Extracting Unique Objects from a Data Array

问题描述

我想仅在数据数组中以前不存在名称时才在数据数组中添加名称。当我试图打印这些名字时，我会重复这些。有没有办法解决这个问题？

I want to add names in a data array only if the name does not previously exist in the data array. When I attempt to print these names, I do get repetitions. Is there a way to solve this?

-(NSMutableArray *)autoComplete
{
    NSMutableArray *dataArray = [[NSMutableArray alloc] init];

    NSString *url = [NSString stringWithFormat:@"%@45.25,-95.25&limit=100&client_id=Von0J4Bu6INiez5bGby2R&client_secret=50sUjSbg7dba8cQgtpdfr5Ns7wyYTqtmKpUU3khQ",kWSURL];
    NSDictionary * returnDict = (NSDictionary *) [self callWebService:url];
    if([returnDict objectForKey:@"success"])
    {
       NSArray *responceArray = [returnDict objectForKey:@"response"];
        for (NSDictionary *dict in responceArray) {

             placeDC *place = [[placeDC alloc]init];
            NSDictionary *placeDict = (NSDictionary *)[dict objectForKey:@"place" ];
            NSDictionary *loctionDict =(NSDictionary *)[dict objectForKey:@"loc"];
            NSString * name =[placeDict objectForKey:@"name"];
            NSString * stateFull =[placeDict objectForKey:@"stateFull"];
            NSString * countryFull =[placeDict objectForKey:@"countryFull"];

            NSString *latitude =[loctionDict objectForKey:@"lat"];
            NSString *longitude = [loctionDict objectForKey:@"long"];
            place.placeNmae=name;
            place.countryFullName=countryFull;
            place.stateFullName=stateFull;
            NSLog(@"%@ ",stateFull);

            place.latitude=[latitude doubleValue];
            place.longitude=[longitude doubleValue];


             [dataArray addObject:place];

        }


    }

    return dataArray;
}

推荐答案

首先检查那里有没有来自服务器端的响应，检查响应是否使用NSLog（）或断点。

First Check that is there any response from the Server side or not, to check response use NSLog() or Break Points.

如果响应正常，则进行以下检查您的代码

if response is ok then put a the following check your code

if (![dataArray containsObject:@"Some Name"])
{

    // add Object

}

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