小编Jop*_*laz的帖子

你好,

即使我做了研究,在我的情况下,我找不到任何可以帮助我的人.

所以,我尝试解析在xcode上由php脚本创建的Json,但是我有一个阻止进程的错误.

我是新人,所以我努力为我的问题布局做最好的...

我的错误:

[376:70b] Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (Garbage at end.) UserInfo=0x8bc0f70 {NSDebugDescription=Garbage at end.

我的代码:

NSData *jsonSource = [NSData dataWithContentsOfURL:
                          [NSURL URLWithString:@"http://codlobbyz.com/app/service.php"]];
    NSError *err;
    id jsonObjects = [NSJSONSerialization JSONObjectWithData:
                      jsonSource options:NSJSONReadingMutableContainers error:&err];
    NSLog(@"%@", err);

我的json:

[{"nom":"Call of duty ghost","date":"22 novembre","image":"appicon.png"},{"nom":"Fifa 14","date":"22 novembre","image":"appicon.png"}]

我希望你能帮助我,谢谢你的答案.

我正在尝试TrainingSessionHistory在我的 SwiftUI 视图之一中对我的（核心数据对象）进行简单的获取请求，但得到了Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

struct TrainingHistoryView: View {

var trainingSession  : TrainingSession

init(trainingSession : TrainingSession) {
    self.trainingSession = trainingSession

    let fetchRequest = FetchRequest(fetchRequest: TrainingSessionHistory.getBy(nb: 2, myTrainingSession: self.trainingSession))
    print(fetchRequest.wrappedValue) // -> crash this EXC_BAD_INSTRUCTION

}

TrainingSessionHistoryExtension : 创建获取请求

static func getBy(nb : Int, myTrainingSession : TrainingSession) -> NSFetchRequest<TrainingSessionHistory>{
    let request:NSFetchRequest<TrainingSessionHistory> = TrainingSessionHistory.fetchRequest() as!    NSFetchRequest<TrainingSessionHistory>

    //request.predicate = NSPredicate(format: "trainingSession == %@", myTrainingSession)
    request.fetchLimit = nb

    let sortDescriptor = NSSortDescriptor(key: "date", ascending: true)

    request.sortDescriptors = [sortDescriptor]

    return …