let pickerController = DKImagePickerController()

pickerController.didCancelled = { () in
    println("didCancelled")
}

pickerController.didSelectedAssets = { [unowned self] (assets: [DKAsset]) in
    println("didSelectedAssets")
    println(assets)
}

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

/// The maximum count of assets which the user will be able to select.
public var maxSelectableCount = 999

/// The type of picker interface to be displayed by the controller.
public var assetType = DKImagePickerControllerAssetType.allAssets

/// Whether allows to select photos and videos at the same time.
public var allowMultipleType = true

/// The callback block is executed when user pressed the select button.
public var didSelectedAssets: ((assets: [DKAsset]) -> Void)?

/// The callback block is executed when user pressed the cancel button.
public var didCancelled: (() -> Void)?

/// It will have selected the specific assets.
public var defaultSelectedAssets: [DKAsset]? {
    didSet {
        if let defaultSelectedAssets = self.defaultSelectedAssets {
            for (index, asset) in enumerate(defaultSelectedAssets) {
                if asset.isFromCamera {
                    self.defaultSelectedAssets!.removeAtIndex(index)
                }
            }
            
            self.selectedAssets = defaultSelectedAssets
            self.updateDoneButtonTitle()
        }
    }
}