ios - 尝试使用下面的 imagePickerController Delegate 函数时出错：

Question

尝试使用以下功能时

func imagePickerController(picker: UIImagePickerController,didFinishPickingImage image: UIImage, editingInfo: [String: AnyObject]?) {
    let selectedImage:UIImage = (editingInfo[UIImagePickerControllerOriginalImage]) as! UIImage
    displayImage.image = selectedImage
    self.dismissViewControllerAnimated(true, completion: nil)
}

出现错误：“无法下标 '[String:AnyObject] 类型的值？具有 'String' 类型的索引

在第二行我写了 let selected Image

这在 Xcode 6.3 和 6.4 上运行良好，但现在使用新的 Xcode 7 beta 4 不起作用并引发错误。

帮助！

Answer 1

我在 imagePickerController 的文档中找到了答案。我不得不使用的方法是 didFinishPickingMediaWithInfo ，如下所示：

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

    let selectedImage:UIImage = (info[UIImagePickerControllerOriginalImage]) as! UIImage
    displayImage.image = selectedImage
    self.dismissViewControllerAnimated(true, completion: nil)
}

Answer 2

在将图像设置为 imageView 之前尝试关闭控制器。
将您的方法替换为：

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
 self.dismissViewControllerAnimated(true, completion: nil)
let selectedImage:UIImage = (editingInfo[UIImagePickerControllerOriginalImage]) as! UIImage
displayImage.image = selectedImage

}