Question

我需要你的帮助！我试图将我的第一个ViewController中选定的PHAsset数组传递给下一个。我在这里声明了数组：

import UIKit
import Photos
import BSImagePicker

class ViewControllerSelectPhotos: UIViewController {

@IBOutlet weak var btnSelect: UIButton!

@IBOutlet weak var btnStartGame: UIButton!

@IBOutlet weak var lblStatus: UILabel!

var SelectedAssets = [PHAsset]()

在这里添加名为BSImagepicker的pod的PHAssets：

@IBAction func btnSelectPhotos(_ sender: UIButton) {

    let vc = BSImagePickerViewController()

    self.bs_presentImagePickerController(vc, animated: true, select: { (asset: PHAsset) -> Void in

    }, deselect: { (asset: PHAsset) -> Void in

    }, cancel: { (assets: [PHAsset]) -> Void in

    }, finish: { (assets: [PHAsset]) -> Void in

        for i in 0..<assets.count
        { self.SelectedAssets.append(assets[i])
        }

    }, completion: nil)
}

然后我使用准备segue函数来传递数组：

override func prepare(for segue: UIStoryboardSegue, sender: Any? ) {
if (segue.identifier == "SegueToViewControllerGame") {
        (segue.destination as! ViewControllerGame).SelectedAssetsGame = (SelectedAssets as AnyObject) as! [PHAsset]
   }
}

在第二个ViewController中，我想将数组SelectedAssets保存在数组SelectedAssetsGame中：

class ViewControllerGame: UIViewController {

var SelectedAssetsGame: [PHAsset] = []

我总是得到NSInvalidArgumentException。我该怎么办？

非常感谢！

Answer 1

在btnSelectPhotos方法中，您可以简单地将资产分配到SelectedAssets变量，而不是执行for循环：

finish: { (assets: [PHAsset]) -> Void in    
    self.SelectedAssets = assets
}

然后将SelectedAssets对象传递给目标视图控制器：

override func prepare(for segue: UIStoryboardSegue, sender: Any? ) {
    if (segue.identifier == "SegueToViewControllerGame") {
        (segue.destination as! ViewControllerGame).SelectedAssetsGame = SelectedAssets
    }
}

编辑（解决方案）： 确保已正确连接IBOutlets（没有任何旧的无效插座）并将正确的参数传递给方法调用。

如何使用Segue将PHAssets数组传递给另一个ViewController

1 个答案: