Xcode9學習筆記53 - 遍歷系統提供的所有濾鏡

import UIKit
import CoreImage
class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        //獲得系統內置濾鏡的名稱，並將濾鏡名稱放置在數組裏
        let builtInFilters = CIFilter.filterNames(inCategory: kCICategoryBuiltIn)
        for filter in builtInFilters {//對濾鏡名稱的數組進行遍歷
            let filter = CIFilter(name: filter as String)//根據濾鏡的名稱獲得濾鏡
            let attributes = filter!.attributes//獲得濾鏡所有的屬性
            print("[\(String(describing: filter))]\n")//在控制檯打印輸出濾鏡信息
            print(attributes)//在控制檯打印輸出濾鏡的所有屬性
            print("\n ------------------------------------------- \n")
        }
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}