快速将图像从一个视图控制器传递到另一个视图控制器

Posted 2023-03-16

【中文标题】快速将图像从一个视图控制器传递到另一个视图控制器

【英文标题】：pass image from one view controller to another in swift

【发布时间】：2014-06-24 08:03:06

【问题描述】：

我尝试使用 segue 将图像从一个视图控制器传递到另一个，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)

这是另一个视图控制器“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.
    

所以查看这个视图控制器中的日志，var editImage 没有初始化为正确的值。 ios 新手，感谢您的帮助。

【参考方案1】：

我想通了，问题不是我想的那样，图像可以传递给另一个视图控制器。问题是由于弃用 API。 “dismissModalViewControllerAnimated”。更多细节请看这个问题。 dismissModalViewControllerAnimated deprecated

【参考方案2】：

看我的。 （我使用了 uipickerview 和委托方法）

    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) 

 let pickedimage = info[UIImagePickerControllerOriginalImage] as! UIImage

imageView.image = pickedimage

            if (imageView.image != nil)
            
                print("image not empty")
picker .dismissViewControllerAnimated(false, completion: nil)

self .performSegueWithIdentifier("seguetoscoutuploadpage", sender: self)
            
            else
            
                print("IMAGE VIEW NIL")
            
        



    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) 

        if (segue.identifier == "seguetoscoutuploadpage") 

let scout =  segue.destinationViewController as! ScoutImageUpload
     scout.newImage = imageView.image!