無法保存到核心數據

Question

我有一個運行時我在我的應用程序點擊保存按鈕

let appDel: AppDelegate = UIApplication.sharedApplication().delegate as! AppDelegate 
    let context: NSManagedObjectContext = appDel.managedObjectContext! 
    print("checkpoint 1") 
    let newJob = NSEntityDescription.insertNewObjectForEntityForName("Job", inManagedObjectContext: context) 
    print("checkpoint 2") 
    newJob.setValue(jobTitleField.text, forKey: "title") 
    newJob.setValue(phoneNumberField.text, forKey: "phoneNumber") 
    print("checkpoint 3") 
    newJob.setValue(Double(hourlyRateField.text!), forKey: "hourlyRate") 
    newJob.setValue(Double(doublePayField.text!), forKey: "doublePayRate") 

    print("checkpoint 4") 
    do { 
     try context.save() 
    } catch { 
     print("There was error saving data.") 
    } 
    print("checkpoint 5") 

    self.dismissViewControllerAnimated(true, completion: {}) 

然而，當我運行應用程序，並通過訪問MySQL數據庫的SQLiteManager下面的代碼中，數據不會出現在數據庫中。

任何人都可以看到我做錯了什麼或我錯過了什麼？

Answer 1

你的代碼看起來很好，除了對最新的Swift進行一些語法修改。下面的保存方法適用於Swift 2.1，如果你想嘗試它

PS，用presentsViewController.dismiss替換self.dismiss，或者關閉self.dismiss將嘗試刪除當前vc的子vc，但我可以看到你正試圖消除自我。

private func save(text:String, entityName:String, key:String) { 
    if let appDelegate = UIApplication.sharedApplication().delegate as? AppDelegate { 
     let managedContext = appDelegate.managedObjectContext 
     if let newjob = NSEntityDescription.entityForName(entityName, inManagedObjectContext: managedContext) { 
      let job = NSManagedObject(entity: newjob, insertIntoManagedObjectContext: managedContext) 
      job.setValue(text, forKey: key) 

      //save 
      do { 
       try managedContext.save() 
       //append it to your model in the project (most common to do) 
      } catch (let error) { 
       print("Not saved. \(error)") 
      } 
     } 
    } 
}