如何在iphone应用程序中获取json数据并将其存储在数组中并访问它

我使用此代码访问json数据。它显示数组中的两个对象，但随后停止

SBJsonParser *parser = [[SBJsonParser alloc] init];

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://celeritas-solutions.com/emrapp/AppointmentListings.php"]];
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSDictionary *object = [parser objectWithString:json_string error:nil];
//appDelegate.books = [[NSMutableArray alloc] initWithCapacity:0];

appDelegate.books = [[NSMutableArray alloc] init];

NSArray *results = [parser objectWithString:json_string error:nil];
NSLog(@"%@", results);

for (int i=0; i<[results count]; i++) {
    AppointmentListing *aBook = [[AppointmentListing alloc] initWithDictionary:[results objectAtIndex:i]];
    [appDelegate.books addObject:aBook];
    [aBook release];    
}

---

从您的代码中，我假定您正在使用JSON文件夹进行JSON解析，其中包含许多与JSON解析器相关的文件

做一件事，首先导入JSON.h文件：

#import "JSON.h"

然后像这样解析您的响应字符串

首先创建一个如下所示的对象：

SBJSON *json = [[SBJSON new] autorelease];
NSDictionary *response_dict = [json objectWithString:json_string];

---

你完了

只需复制、粘贴和替换代码即可解决您的问题：

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://celeritas-solutions.com/emrapp/AppointmentListings.php"]];
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *json_string = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
NSArray *books=[json_string JSONValue];

for (int i=0; i<[books count]; i++) {
    /*AppointmentListing  *aBook = [[AppointmentListing alloc] initWithDictionary:[books objectAtIndex:i]];
    [books addObject:aBook];
    [aBook release];*/

    NSDictionary *dict=[books objectAtIndex:i];

    book.appointmentdate=[dict valueForKey:@"AppointmentDate"];
    book.AppointmentListingsID=[dict valueForKey:@"AppointmentListingsID"];
    book.AppointmentTime=[dict valueForKey:@"AppointmentTime"];
    book.PatientID=[dict valueForKey:@"PatientID"];
    book.ProviderNPI=[dict valueForKey:@"ProviderNPI"];
    book.UpdateDateTime=[dict valueForKey:@"UpdateDateTime"];

    NSLog([dict description],nil);
}

NSLog(@"%@", json_string);


//May this will help you out.
//You just need to import "Json.h" to your class header


//Log I got from this piece of code :
2012-03-21 14:34:34.841 ProgressiveDownload[1045:f803] {
    AppointmentDate = "2012-03-20";
    AppointmentListingsID = 1;
    AppointmentTime = "09:00:00";
    PatientID = 556712;
    ProviderNPI = 7610922880;
    UpdateDateTime = "2012-03-20 00:30:35";
}

2012-03-21 14:34:37.356 ProgressiveDownload[1045:f803] {
    AppointmentDate = "2012-03-20";
    AppointmentListingsID = 2;
    AppointmentTime = "10:00:00";
    PatientID = 712211;
    ProviderNPI = 7610922880;
   UpdateDateTime = "2012-03-20 00:31:25";
}

NSURLRequest*request=[nsurlRequestWithURL:[nsurlUrlWithString:@]http://celeritas-solutions.com/emrapp/AppointmentListings.php"]];
NSData*响应=[NSURLConnection sendSynchronousRequest:request returningResponse:nil错误：nil]；
NSString*json_string=[[NSString alloc]initWithData:响应编码：NSUTF8StringEncoding]；
NSArray*books=[json_string JSONValue]；
for（int i=0；i//这是一个字典，您可以用与数组相同的方式使用它

NSString *url = @"http://weather.yahooapis.com/forecastjson?w=22117";
NSString *myJson=[[NSString alloc]initWithContentsOfURL:[NSURL URLWithString:url]];

if([myJson length]==0)
{
    [myJson release];
    return;
}
SBJsonParser *praser=[[SBJsonParser alloc]init];
    NSDictionary *dicParser=[[praser objectWithString:myJson error:nil] copy];

NSString*responseString=[request responseString]；
NSMutableDictionary*responseJSON=[responseString JSONValue]；
。然后您可以简单地使用NSDictionary并显示其中的数据。@ParthBhatt如何做我也给出了上面的代码参考此链接：@Aftab Ali您只需复制/粘贴我在该页面中发布的代码就可以了。是的，我正在导入JSON，但在下面我只添加了这个，我将如何添加到数组中，因为我已经添加了donebut ap当我使用这个时，p崩溃了看看上面的代码，我下载了数据日志。是的，现在它正在工作，但是如何将它们添加到像book.AppointDate这样的数组中；像这样，我已经为这个创建了NSObject类现在检查代码。确认你已经声明了你正在使用的自定义类的所有变量。@Kukdeep i有一个AppointListing类，在这个类中这些都是，那么如何在那个数组中添加arObject呢
NSMutableData *responseData1= [NSMutableData data] ;
responseData1 = [NSMutableData dataWithContentsOfURL:[NSURL URLWithString:@"http://celeritas-solutions.com/emrapp/AppointmentListings.php"]];
// NSLog(@"%@",responseData1);
NSString *responseString1 = [[NSString alloc] initWithData:responseData1 encoding:NSUTF8StringEncoding];
//NSLog(@"REs:-->%@",responseString1);
//[responseData1 release];
responseData1 = nil;
NSMutableArray *responseArray = [[NSMutableArray alloc]init];
responseArray = (NSMutableArray *)[responseString1 JSONValue];
// NSLog(@"ghfchfvghv%@",responseArray);
//[responseString1 release];
//return responseArray;
NSLog(@"%@",[responseArray description]);

NSString *url = @"http://weather.yahooapis.com/forecastjson?w=22117";
NSString *myJson=[[NSString alloc]initWithContentsOfURL:[NSURL URLWithString:url]];

if([myJson length]==0)
{
    [myJson release];
    return;
}
SBJsonParser *praser=[[SBJsonParser alloc]init];
    NSDictionary *dicParser=[[praser objectWithString:myJson error:nil] copy];