這個場景跟《手寫Unity容器--極致簡陋版Unity容器》不一樣,這裏構造AndroidPhone的時候,AndroidPhone依賴於1個IPadiphone
一、IPhone接口函數
namespace SimplestUnity_OneLayer { interface IPhone { void Call(); } }
二、AndroidPhone實現this
namespace SimplestUnity_OneLayer { public class AndroidPhone : IPhone { public AndroidPhone() { Console.WriteLine("{0}構造函數", this.GetType().Name); } } }
三、IPad接口spa
namespace SimplestUnity_OneLayer { public interface IPad { void Show(); } }
四、IPad實現3d
namespace SimplestUnity_OneLayer { public class AndroidPad:IPad { public AndroidPad() { Console.WriteLine("{0}構造函數", this.GetType().Name); } public void Show() { Console.WriteLine("看{0}", this.GetType().Name); } } }
五、容器--接口code
public interface IDavidContainer { void RegisterType<TFrom, TTo>(); T Resolve<T>(); }
六、容器--實現blog
namespace SimplestUnity_OneLayer { /// <summary> /// 容器--工廠 /// </summary> public class DaivdContainer:IDaivdContainer { private Dictionary<string, Type> containerDictionary = new Dictionary<string, Type>();//字典 /// <summary> /// 註冊類型 /// </summary> /// <typeparam name="TFrom"></typeparam> /// <typeparam name="TTo"></typeparam> public void RegisterType<TFrom, TTo>() { containerDictionary.Add(typeof(TFrom).FullName, typeof(TTo)); } /// <summary> /// 獲取實例 /// </summary> /// <typeparam name="T"></typeparam> /// <returns></returns> public T Resolve<T>() { Type type = containerDictionary[typeof(T).FullName]; //一、獲得類型的全部構造函數 ConstructorInfo[] ctorArray = type.GetConstructors(); //二、只獲得有標記DavidInjectionConstructor特性的構造函數,若是都沒有標記特性,那麼獲得參數最多的構造函數 ConstructorInfo currentCtor = null; if (ctorArray.Count(c => c.IsDefined(typeof(DavidInjectionConstructor), true)) > 0) { currentCtor = ctorArray.FirstOrDefault(c => c.IsDefined(typeof(DavidInjectionConstructor), true));//獲得第1個標記DavidInjectionConstructor特性的構造函數 } else { currentCtor = ctorArray.OrderByDescending(c => c.GetParameters().Length).FirstOrDefault();//獲得參數個數最多的構造函數 } List<object> paraList = new List<object>(); foreach (var para in currentCtor.GetParameters()) { //獲得的參數類型是IPad,抽象沒法建立實例 var paraType = para.ParameterType; //因此根據IPad Key,獲得AndroidPad類型,具體類型就能夠建立實例 var targetParaType = containerDictionary[paraType.FullName]; paraList.Add(Activator.CreateInstance(targetParaType)); } return (T)Activator.CreateInstance(type,paraList.ToArray()); } } }
七、調用接口
namespace SimplestUnity_OneLayer { class Program { static void Main(string[] args) { DaivdContainer davidContainer = new DaivdContainer(); davidContainer.RegisterType<IPhone, AndroidPhone>(); davidContainer.RegisterType<IPad, AndroidPad>(); IPhone iphone = davidContainer.Resolve<IPhone>(); iphone.Call(); } } }