Ios NSPredicate文件问题

我有一个

PickerView

和

TableView

，我正在将数据从服务器加载到PickerView，一旦我在picker中选择了城市，我就会在TableView中显示结果

为此，我使用

NSPredicate

从字典中筛选它并显示结果。。。但它没有显示任何价值。请问我的问题在哪里？我做错什么了吗

为PickerView调用的数据

{"Status":1,"Response":[{"ID":19,"Title":"G.A","Name":"G.A"},{"ID":8,"Title":"Mexico","Name":"Mexico"},{"ID":17,"Title":"USA","Name":"USA"},...

为tableView调用的数据

{"ID":309436,"CountryID":8,"CountryName":"Mexico","Previous":"%3,0","Actual":"%3,0","cast":"%2,9","Event":"M2","Priority":1,"Date":"14.10.2014","Time":"01:50:00"},{"ID":309437,"CountryID":8,"CountryName":"Mexico","Previous":"%2,4","Actual":"%2,5","cast":"%2,4","Event":"M3","Priority":1,"Date":"14.10.2014","Time":"01:50:00"},{"ID":317211,"CountryID":17,"CountryName":"USA","Previous":"%0,1","Actual":"%1,2","cast":"%1,4","Event":"GPS1","Priority":3,"Date":"14.10.2014","Time":"02:00:00"},{"ID":317212,"CountryID":17,"CountryName":"USA","Previous":"%2,4","Actual":"%2,4","cast":"%2,6","Event":"GPS","Priority":3,"Date":"14.10.2014","Time":"02:00:00"},

我想获取

事件

和

日期

值

- (void)runURL

    NSURL *url = [NSURL URLWithString:@"http://www.example.com.ashx"];

NSURLRequest *request = [NSURLRequest requestWithURL:url];
[NSURLConnection sendAsynchronousRequest:request
                                   queue:[NSOperationQueue mainQueue]
                       completionHandler:^(NSURLResponse *response,
                                           NSData *data, NSError *connectionError)
 {
     if (data.length > 0 && connectionError == nil)
     {
         dicList2 = [NSJSONSerialization JSONObjectWithData:data
                                                                  options:0
                                                                    error:NULL];

         if([[[dicList2 objectForKey:@"Success"] stringValue] isEqualToString:@"1"]){

             [dataCalendarArray3 addObjectsFromArray:[dicList2 objectForKey:@"Response"]];
         }
}

- (void)runPredicate
{
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF.CountryName MATCHES ‘%@‘", @"Mexico"];

    NSArray *ar = [dicList2 objectForKey:@"Response"];

    NSArray *filter = [ar filteredArrayUsingPredicate:pred];

    NSLog(@"New List %@",filter);
}

---

尝试此NSPredicate*resultPredicate=[NSPredicate predicateWithFormat:@“SELF contains[cd]@”，searchText]

尝试此NSPredicate*resultPredicate=[NSPredicate predicateWithFormat:@“SELF contains[cd]@”，searchText]；您在哪里调用runpredicate？@johnykumar，它可以工作。有没有快速获取

事件

和

日期

的方法？从字典中获取字符串后，您可以使用日期格式化程序转换日期对象。但对于从服务器获取数据，我认为您的方法是对的。我得到的结果是`Actual=“95,3”；CountryID=17；CountryName=美国；日期=“2014年10月14日”；事件=“***”；Forecast=“95,8”；ID=300183；先前的=“96,1”；优先级=1；Time=“14:30:00”`那你想用它做什么？