xamarin.Xamarin iOS用户界面收藏视图.通用CellRegistration，它在哪里

Question

我一直在试图弄清楚UICollectionView的确切位置。CellRegistration<单元格类型，项目类型>。

我可以看到有一个UICollectionViewCellRegistration。GetRegistration，但不确定如何调用Generic版本，或者至少为GetRegistrations版本提供ItemType。

Answer 1

引用官方文档：

public class UICollectionViewCellRegistration : Foundation.NSObject, Foundation.INSObjectProtocol, ObjCRuntime.INativeObject, System.IDisposable, System.IEquatable<Foundation.NSObject> {
// constructors
protected UICollectionViewCellRegistration (Foundation.NSObjectFlag t);
protected UICollectionViewCellRegistration (IntPtr handle);
// properties
public virtual ObjCRuntime.Class CellClass { get; }
public virtual UINib CellNib { get; }
public System.Type CellType { get; }
public override IntPtr ClassHandle { get; }
public virtual UICollectionViewCellRegistrationConfigurationHandler ConfigurationHandler { get; }
// methods
public static UICollectionViewCellRegistration GetRegistration (ObjCRuntime.Class cellClass, UICollectionViewCellRegistrationConfigurationHandler configurationHandler);
public static UICollectionViewCellRegistration GetRegistration (System.Type cellType, UICollectionViewCellRegistrationConfigurationHandler configurationHandler);
public static UICollectionViewCellRegistration GetRegistration (UINib cellNib, UICollectionViewCellRegistrationConfigurationHandler configurationHandler);
}

和

public sealed delegate UICollectionViewCellRegistrationConfigurationHandler : System.MulticastDelegate, System.ICloneable, System.Runtime.Serialization.ISerializable {
// constructors
public UICollectionViewCellRegistrationConfigurationHandler (object object, IntPtr method);
// methods
public virtual System.IAsyncResult BeginInvoke (UICollectionViewCell cell, Foundation.NSIndexPath indexPath, Foundation.NSObject item, System.AsyncCallback callback, object object);
public virtual void EndInvoke (System.IAsyncResult result);
public virtual void Invoke (UICollectionViewCell cell, Foundation.NSIndexPath indexPath, Foundation.NSObject item);
}

例如：

var c = UICollectionViewCellRegistration.GetRegistration(typeof(UICollectionViewListCell), (cell, index,item)=> { 

});