ios - 呈现 UIImagePickerController 后应用程序崩溃

Question

我试图呈现一个 UIImagePickerController 以便从相册中获取图像，但我遇到了一个奇怪的行为。

如果我在 viewDidLoad 中启动图像选择器，它会工作:

class CaptureImageViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {

@IBOutlet weak var imageView: UIImageView!

override func viewDidLoad() {
    super.viewDidLoad()
    initPicker()
}

func initPicker() {
    let picker = UIImagePickerController()
    picker.delegate = self
    picker.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
    presentViewController(picker, animated: true, completion: nil)
}

func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]!) {
    dismissViewControllerAnimated(true, completion: nil)
    imageView.image = info["UIImagePickerControllerOriginalImage"] as UIImage
}

func imagePickerControllerDidCancel(picker: UIImagePickerController!) {
    dismissViewControllerAnimated(true, completion: nil)
}

}

但是，如果我将 initPicker() 转换为 @IBAction 并从 Button 调用它，在点击它之后，图像选择器会出现，但应用程序会突然崩溃出现此错误:

CaptureImageViewController respondsToSelector:]: message sent to deallocated instance 0x7960b1e0

我正在使用 XCode Beta 6 开发模拟器

有什么想法吗？

Answer 1

尝试将 UIImagePickerController 的对象声明为 Instance 级别参数，而不是在函数内声明。