swift - 快速将图像从一个 View Controller 传递到另一个 View Controller

Question

我尝试使用 segue 将图像从一个 View Controller 传递到另一个 View Controller ，但图像为空且无法使用。

这里是mainViewController.swift，所有日志都显示正确的值。

func imagePickerController(picker:UIImagePickerController!,didFinishPickingMediaWithInfo info: NSDictionary!){
    var i:UIImage = info.objectForKey(UIImagePickerControllerOriginalImage) as UIImage
    NSLog("%f, %f", i.size.width, i.size.height);

    orignal = i
    NSLog("iamge %@", orignal)
    performSegueWithIdentifier("showPhoto", sender: self)
    dismissModalViewControllerAnimated(false)
}

override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
    var imageEditcontroller:ImageEditViewController = segue.destinationViewController as ImageEditViewController

    imageEditcontroller.editImage = orignal
    NSLog("iamge %@", imageEditcontroller.editImage)
}

这是另一个 View Controller “ImageEditViewController.swift”

import UIKit

class ImageEditViewController: UIViewController {

    @IBOutlet var imagEditView : UIImageView

    var editImage:UIImage=UIImage()

    @IBAction func doDecorateBtn(sender : AnyObject) {
        print("here text chage5")
    }

    @IBAction func doEmailBtn(sender : AnyObject) {
        print("here text chage6")        
    }

    init(coder aDecoder: NSCoder!) {
        super.init(coder: aDecoder)
        NSLog("iamge2 %@", editImage)            
    }

    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)
        NSLog("iamge1 %@", editImage)
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the vie
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}

所以查看此 View ​​ Controller 中的日志，var editImage 未初始化为正确的值。刚刚接触 IOS，感谢您的帮助。

Answer 1

我明白了，问题不是我想的那样，图像可以传递给另一个 View Controller 。该问题是由于弃用 API 造成的。 “解除ModalViewControllerAnimated”。更详细的请参阅这个问题。 dismissModalViewControllerAnimated deprecated