我有一个用Swift编写的Parse查询，用户可以查看所有照片。我正在使用query.whereKey("", matchesKey: "", inQuery:)来获取我的对象，然后在每个循环之后获取PFFile数据，并重新加载表视图。因此，在下载每张照片后，表视图应该加载（照片只有150x150。查询限制越高，任何信息加载的可能性就越小。当限制设置为1000时，页面总是不加载。它通常仅在限制为＆lt; = 60.
有时我得FBSUIApplicationSystemService: request to get badge value timed out我不知道它意味着什么，而有时我什么也得不到。这是Parse超时问题吗？我该如何解决这个问题？
// Reloads table view
var imageSet:Bool = false {
didSet {
if imageSet {
dispatch_async(dispatch_get_global_queue(Int(QOS_CLASS_USER_INITIATED.value), 0)) { // 1
dispatch_async(dispatch_get_main_queue()) { // 2
self.tableView.reloadData() // 3
}
}
}
}
}
// Gets photos
var dataLoaded:Bool = false {
didSet {
if dataLoaded {
let photoArt = photoCovers.last!
let indexNumber = find(photoCovers, photoCovers.last!)!
photoArt.getDataInBackgroundWithBlock({ (imageData, error) -> Void in
if error == nil {
if let imageData = imageData {
let image = UIImage(data: imageData)
self.photoArt[indexNumber] = image
}
} else {
println(error)
}
self.imageSet = true
})
}
self.imageSet = false
}
}
var innerQuery = PFQuery(className: "Followers")
innerQuery.whereKey("followerId", equalTo: PFUser.currentUser()!.objectId!)
var query = PFQuery(className: "Pictures")
query.whereKey("user", matchesKey: "followingId", inQuery: innerQuery)
query.limit = 100
query.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
if error == nil {
if let objects = objects {
for object in objects {
if let user = object["user"]! as? String {
if (self.users.filter { $0 == user }.count) < 30 {
self.users.append(user)
if let caption = object["caption"] as? String {
self.captions.append(caption)
}
if let photographer = object["photographer"] as? String {
self.photographers.append(photographer)
}
if let userName = object["userName"] as? String {
self.userNames.append(userName)
}
if let photoCover = object["photoCover"] as? PFFile {
self.photoCovers.append(photoCover)
}
if let userId = object["user"] as? String {
self.userIds.append(userId)
}
self.dataLoaded = true
}
}
}
}
} else {
println(error)
}
self.dataLoaded = false
}