您好我尝试使用PFQuery来检索数据。
tabelviewController中的loadPosts。
我的问题是评论阵容。
正如你所看到的...... commentsArray与其他arryas不同步。
因为它有不同的db类。
我想让所有数据数组设置uilabel的文本同步
我如何实现这一目标？
我也试图解析同步方法。但它真的很慢。
这是我的代码。 TableViewController中的这个函数。
func loadPosts() {
//STEP 1. Find posts related to people who we are following
let followQuery = PFQuery(className: "fans")
followQuery.whereKey("myfans", equalTo: PFUser.currentUser()!.username!)
followQuery.findObjectsInBackgroundWithBlock ({ (objects:[PFObject]?, error:NSError?) -> Void in
if error == nil {
//clean up
self.followArray.removeAll(keepCapacity: false)
//Appending where people following..
//find related objects
for object in objects! {
self.followArray.append(object.objectForKey("fan") as! String)
}
//append current user to see own posts in feed
self.followArray.append(PFUser.currentUser()!.username!)
//STEP 2. Find posts made by people appended to followArray
let query = PFQuery(className: "posts")
query.whereKey("username", containedIn: self.followArray)
query.limit = self.page
query.addDescendingOrder("createdAt")
query.findObjectsInBackgroundWithBlock({ (objects:[PFObject]?, error:NSError?) -> Void in
if error == nil {
//clean up
self.usernameArray.removeAll(keepCapacity: false)
self.profileArray.removeAll(keepCapacity: false)
self.dateArray.removeAll(keepCapacity: false)
self.postArray.removeAll(keepCapacity: false)
self.descriptionArray.removeAll(keepCapacity: false)
self.uuidArray.removeAll(keepCapacity: false)
//For Test
self.commentsArray.removeAll(keepCapacity: false)
self.isTappedLikeArray.removeAll(keepCapacity: false)
//find related objects
for object in objects! {
self.usernameArray.append(object.objectForKey("username") as! String)
self.profileArray.append(object.objectForKey("profileImg") as! PFFile)
self.dateArray.append(object.createdAt)
self.postArray.append(object.objectForKey("postImg") as! PFFile)
self.descriptionArray.append(object.objectForKey("title") as! String)
self.uuidArray.append(object.objectForKey("uuid") as! String)
//STEP 3.
//Check Comment
let countQuery = PFQuery(className: "comments")
countQuery.whereKey("to", equalTo: object.objectForKey("uuid") as! String)
countQuery.limit = 1
countQuery.addAscendingOrder("createdAt")
countQuery.countObjectsInBackgroundWithBlock({(count:Int32, error:NSError?) -> Void in
//if no any likes are found, else found likes
if count==0 {
self.commentsArray.append("")
}else{
let commentQuery = PFQuery(className: "comments")
commentQuery.whereKey("to", equalTo: object.objectForKey("uuid") as! String)
commentQuery.limit = 1
commentQuery.addDescendingOrder("createdAt")
commentQuery.findObjectsInBackgroundWithBlock({(objects:[PFObject]?, error:NSError?) -> Void in
if error == nil {
//clean up
//find related object
for object in objects!{
let comment = object.objectForKey("comment") as! String
let by = object.objectForKey("username") as! String
let commentString = by + " " + comment
self.commentsArray.append(commentString)
}
//reload tableView & end spinning of refresher
self.tableView.reloadData()
self.refresher.endRefreshing()
}else {
print(error?.localizedDescription)
}
})
}
})
}
} else {
print(error!.localizedDescription)
}
})
} else {
print(error!.localizedDescription)
}
})
}