DKImagePickerController致命错误：意外发现零而展开的可选值

Question

我试图DKImagePickerController融入我的项目。

GitHub的是在这里： DKImagePickerController

我做的CocoaPods更新。该示范项目是罚款运行，但我的项目有错误，当我点击按钮的照片库的视图：

unexpectedly found nil while unwrapping an Optional value

在

func showImagePicker() { 
     pickerController.defaultSelectedAssets = self.assets /* this one 
If anyone know what wrong, I appreciate it*/ 

Answer 1

对象的第一行pickerController只声明，未初始化。 SDK的指导页面已经给出了示例，并且我为您的情况更改了一些行：

func showImagePicker() { 
    if pickerController == nil { 
     pickerController = DKImagePickerController() 
    }  

    pickerController.defaultSelectedAssets = self.assets 
    pickerController.didSelectAssets = { (assets: [DKAsset]) in 
     self.assets = assets 
     //Continue handle images which in the assets. 
    } 

    self.presentViewController(pickerController, animated: true) {} 
}