ios – NSIndexPath和IndexPath在Swift 3.0中

概述我最近将我的代码转换为Swift 3.0.我的集合视图和表视图数据源方法现在在其方法签名中包含IndexPath而不是NSIndexPath.但是仍然在方法定义中,将IndexPath类型转换为NSIndexPath.即 func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPat 我最近将我的代码转换为Swift 3.0.我的集合视图和表视图数据源方法现在在其方法签名中包含IndexPath而不是NSIndexPath.但是仍然在方法定义中,将IndexPath类型转换为NSIndexPath.即

func collectionVIEw(_ collectionVIEw: UICollectionVIEw,cellForItemAt indexPath: IndexPath) -> UICollectionVIEwCell    {        let cell : NnamenitIEsOrFurnishingCollectionVIEwCell = self.amenitIEsOrFurnishingCollectionVIEw.dequeueReusableCell(withReuseIDentifIEr: "NnamenitIEsOrFurnishingCollectionVIEwCell",for: indexPath) as! NnamenitIEsOrFurnishingCollectionVIEwCell        cell.facilityImagename = self.facilityArray[(indexPath as NSIndexPath).row].imagename        cell.facilityLabelString = self.facilityArray[(indexPath as NSIndexPath).row].labelText        return cell    }

任何人都可以告诉我为什么indexPath被转换为NSIndexPath.

解决方法 没有理由将IndexPath转换为NSIndexPath.
Swift 3覆盖类型IndexPath具有属性

/// The section of this index path,when used with `UItableVIEw`.////// - precondition: The index path must have exactly two elements.public var section: Int/// The row of this index path,when used with `UItableVIEw`.////// - precondition: The index path must have exactly two elements.public var row: Int

您可以直接访问：

cell.facilityImagename = self.facilityArray[indexPath.row].imagename    cell.facilityLabelString = self.facilityArray[indexPath.row].labelText

显然,Xcode迁移者并不完美.

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