我在PFQuery中叫viewDidLoad中有一个getUserPicPostData。输出显示数组计数中有3张图像。

ViewdidLoad：

func getUserPicPostData() {
    let query = PFQuery(classname: "PicPost")
    query.whereKey("username",equalTo: usernameSelected)
    query.findObjectsInBackground(block: { (objects: [PFObject]?,error: Error?) in
        if let objects = objects {
            for object in objects {
                self.picLikeArray.append(object["UserLikes"] as! Int)
                self.picTimeArray.append(object["UserTime"] as! String)
                self.picObjectIdArray.append(object.objectId!)

                let userImageFile = object["ImageFile"] as? PFFileObject

                userImageFile?.getDataInBackground(block: { (imageData: Data?,error: Error?) in
                    if error == nil {
                        self.picPostArray.append(UIImage(data: imageData!)!) 
                        print(self.picPostArray.count)
                    } 
                    else {
                        print(error)
                    }
                })
            } 
        }
    })
}

然后我要告诉我的单元格接受imageArray的输入。 PicPostArray现在为零？

cellForRowAtIndexPath：

print(picPostArray)
cell.imageView1.imageView!.image = picPostArray[0]
cell.imageView2.imageView!.image = picPostArray[1]
cell.imageView3.imageView!.image = picPostArray[2]