DKImagePickerController致命錯誤：意外發現零而展開的可選值

Question

我試圖DKImagePickerController融入我的項目。

GitHub的是在這裏： DKImagePickerController

我做的CocoaPods更新。該示範項目是罰款運行，但我的項目有錯誤，當我點擊按鈕的照片庫的視圖：

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

對象的第一行pickerController只聲明，未初始化。 SDK的指導頁面已經給出了示例，並且我爲您的情況更改了一些行：

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) {} 
}