Question

我需要帮助。我正在尝试使用核心数据来实现应用程序。但是在第52行 -

myHood.setMyHoodImg(addHoodImg.image!))

每次单击按钮创建新引擎盖时都会出错。错误：

＆＃34;主题1：EXC_BAD_ACCESS（代码= EXC_I386_GPFLT）

以下是代码：

import UIKit
import CoreData

class CreateHoodVC: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@IBOutlet weak var hooddesc: UITextField!
@IBOutlet weak var addHoodImgBtn: UIButton!
@IBOutlet weak var addHoodImg: UIImageView!

var imagePicker: UIImagePickerController!

override func viewDidLoad() {
    super.viewDidLoad()

    imagePicker = UIImagePickerController()
    imagePicker.delegate = self
    addHoodImg.layer.cornerRadius = 4.0
    addHoodImg.clipsToBounds  = true

}

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {

    imagePicker.dismissViewControllerAnimated(true, completion: nil)
    addHoodImg.image = image
}

@IBAction func addImage(sender: AnyObject!){

    presentViewController(imagePicker, animated: true, completion: nil)

}


@IBAction func createHood(){

    if let hoodDescription = hooddesc.text where hoodDescription  != ""{

        let app = UIApplication.sharedApplication().delegate as! AppDelegate
        let  context  = app.managedObjectContext
        let entity = NSEntityDescription.entityForName("MyHood", inManagedObjectContext: context)!
        let myHood = MyHood(entity: entity, insertIntoManagedObjectContext: context)

        myHood.myHoodDescription = hoodDescription
        myHood.setMyHoodImg(addHoodImg.image!)

        context.insertObject(myHood)

        do {

            try context.save()
        } catch {
            print("Could not save new Hood")
        }
    }

}

}

Answer 1

这很简单：

如果你写：

myHood.setMyHoodImg(addHoodImg.image!)

你假设addHoodImg.image存在，但是在第一次运行时，如果没有选择图像，则为NIL。所以有两种方式：

1）简单地写：

if let hoodDescription = hooddesc.text where hoodDescription  != "" , let img = addHoodImg.image {

2）启动时禁用按钮并在选择和图像后启用。

希望得到这个帮助。

ps我在这里使用了一个功能齐全的原型（减少！）。

错误：＆＃34;线程1：EXC_BAD_ACCESS（代码= EXC_I386_GPFLT）

1 个答案: