无法将'Int'类型的值转换为预期的参数类型'IndexSet'

Question

for number in 0..<fetchResult.count{
    imgManager.requestImage(for: fetchResult.objects(at: number) as! PHAsset, targetSize: CGSize(width:200, height:200), contentMode: .aspectFill, options: requestOptions, resultHandler: {
    image, error in
        self.imageArray.append(image!)
    })
}

我在fetchResult.objects（at：number）

中有数字跟随错误

  

无法将'Int'类型的值转换为预期的参数类型'IndexSet'

我该如何解决这个问题？

Answer 1

for number in fetchResult{
    imgManager.requestImage(for: number as! PHAsset, targetSize: CGSize(width:200, height:200), contentMode: .aspectFill, options: requestOptions, resultHandler: {
    image, error in
        self.imageArray.append(image!)
    })
}