在我的应用中，用户可以通过创建用户名和密码或使用Facebook登录来登录/注册。 Parse存储用户名和密码。它对Facebook也是如此，但它存储用户令牌（我认为）而不是用户名。然后我在表视图中显示用户名，但Facebook用户显示为用户令牌，如：Afjkd233edJ而不是他们的用户名。我也使用Facebook图形api，它将名称存储在我的类User中。然而，我无法发布该名称而不是令牌。这是我在我的View控制器中使用的代码，它处理登录和注册，然后下面是我的表视图控制器，它显示用户以及他们关注或不关注的人。编辑：我忘了提到我正在使用解析服务器，并已将其迁移到Heroku并使用mongoldb dyno。
import UIKit
import Parse
import ParseFacebookUtilsV4
class ViewController: UIViewController {
var signupActive = true
@IBOutlet weak var username: UITextField!
@IBOutlet weak var password: UITextField!
@IBOutlet weak var signupButton: UIButton!
@IBOutlet weak var registeredText: UILabel!
@IBOutlet weak var loginButton: UIButton!
var activityIndicator: UIActivityIndicatorView = UIActivityIndicatorView()
func displayAlert(title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction((UIAlertAction(title: "OK", style: .Default, handler: { (action) -> Void in
self.dismissViewControllerAnimated(true, completion: nil)
})))
self.presentViewController(alert, animated: true, completion: nil)
}
@IBAction func signUp(sender: AnyObject) {
if username.text == "" || password.text == "" {
displayAlert("Error in form", message: "Please enter a username and password")
} else {
activityIndicator = UIActivityIndicatorView(frame: CGRectMake(0, 0, 50, 50))
activityIndicator.center = self.view.center
activityIndicator.hidesWhenStopped = true
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray
view.addSubview(activityIndicator)
activityIndicator.startAnimating()
UIApplication.sharedApplication().beginIgnoringInteractionEvents()
var errorMessage = "Please try again later"
if signupActive == true {
let user = PFUser()
user.username = username.text
user.password = password.text
user.signUpInBackgroundWithBlock({ (success, error) -> Void in
self.activityIndicator.stopAnimating()
UIApplication.sharedApplication().endIgnoringInteractionEvents()
if error == nil {
// Signup successful
//self.performSegueWithIdentifier("login", sender: self)
let appDelegate = UIApplication.sharedApplication().delegate! as! AppDelegate
var initialViewController = self.storyboard!.instantiateViewControllerWithIdentifier("myTabbarControllerID") as! UIViewController
appDelegate.window?.rootViewController = initialViewController
appDelegate.window?.makeKeyAndVisible()
} else {
if let errorString = error!.userInfo["error"] as? String {
errorMessage = errorString
}
self.displayAlert("Failed SignUp", message: errorMessage)
}
})
} else {
PFUser.logInWithUsernameInBackground(username.text!, password: password.text!, block: { (user, error) -> Void in
self.activityIndicator.stopAnimating()
UIApplication.sharedApplication().endIgnoringInteractionEvents()
if user != nil {
// Logged In!
//self.performSegueWithIdentifier("login", sender: self)
let appDelegate = UIApplication.sharedApplication().delegate! as! AppDelegate
var initialViewController = self.storyboard!.instantiateViewControllerWithIdentifier("myTabbarControllerID") as! UIViewController
appDelegate.window?.rootViewController = initialViewController
appDelegate.window?.makeKeyAndVisible()
} else {
if let errorString = error!.userInfo["error"] as? String {
errorMessage = errorString
}
self.displayAlert("Failed Login", message: errorMessage)
}
})
}
}
}
@IBAction func logIn(sender: AnyObject) {
if signupActive == true {
signupButton.setTitle("Log In", forState: UIControlState.Normal)
registeredText.text = "Not registered?"
loginButton.setTitle("Sign Up", forState: UIControlState.Normal)
signupActive = false
} else {
signupButton.setTitle("Sign Up", forState: UIControlState.Normal)
registeredText.text = "Already registered?"
loginButton.setTitle("Login", forState: UIControlState.Normal)
signupActive = true
}
}
@IBAction func faceBookLogIn(sender: AnyObject) {
let permissions = ["public_profile"]
PFFacebookUtils.logInInBackgroundWithReadPermissions(permissions, block: {
(user: PFUser?, error: NSError?) -> Void in
if let error = error {
print(error)
} else {
let graphRequest = FBSDKGraphRequest(graphPath: "me", parameters: ["fields": "id, name, gender"])
graphRequest.startWithCompletionHandler( {
(connection, result, error) -> Void in
if error != nil {
print(error)
} else if let result = result {
PFUser.currentUser()?["name"] = result["name"]!
PFUser.currentUser()?.saveInBackground()
let userId = result["id"]! as! String
}
})
if let user = user {
//self.performSegueWithIdentifier("login", sender: self)
let appDelegate = UIApplication.sharedApplication().delegate! as! AppDelegate
var initialViewController = self.storyboard!.instantiateViewControllerWithIdentifier("myTabbarControllerID") as! UIViewController
appDelegate.window?.rootViewController = initialViewController
appDelegate.window?.makeKeyAndVisible()
}
}
})
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func viewDidAppear(animated: Bool) {
if let username = PFUser.currentUser()?.username {
let appDelegate = UIApplication.sharedApplication().delegate! as! AppDelegate
var initialViewController = self.storyboard!.instantiateViewControllerWithIdentifier("myTabbarControllerID") as! UIViewController
appDelegate.window?.rootViewController = initialViewController
appDelegate.window?.makeKeyAndVisible()
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
import UIKit
import Parse
class TableViewController: UITableViewController {
var usernames = [""]
var userids = [""]
var isFollowing = ["":false]
var refresher: UIRefreshControl!
func refresh() {
var query = PFUser.query()
query?.findObjectsInBackgroundWithBlock({ (objects, error) -> Void in
if let users = objects {
self.usernames.removeAll(keepCapacity: true)
self.userids.removeAll(keepCapacity: true)
self.isFollowing.removeAll(keepCapacity: true)
for object in users {
if let user = object as? PFUser {
if user.objectId! != PFUser.currentUser()?.objectId {
self.usernames.append(user.username!)
self.userids.append(user.objectId!)
var query = PFQuery(className: "followers")
query.whereKey("follower", equalTo: PFUser.currentUser()!.objectId!)
query.whereKey("following", equalTo: user.objectId!)
query.findObjectsInBackgroundWithBlock({ (objects, error) -> Void in
if let objects = objects {
if objects.count > 0 {
self.isFollowing[user.objectId!] = true
} else {
self.isFollowing[user.objectId!] = false
}
}
if self.isFollowing.count == self.usernames.count {
self.tableView.reloadData()
self.refresher.endRefreshing()
}
})
}
}
}
}
})
}
override func viewDidLoad() {
super.viewDidLoad()
refresher = UIRefreshControl()
refresher.attributedTitle = NSAttributedString(string: "Pull to refresh")
refresher.addTarget(self, action: "refresh", forControlEvents: UIControlEvents.ValueChanged)
self.tableView.addSubview(refresher)
refresh()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Potentially incomplete method implementation.
// Return the number of sections.
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete method implementation.
// Return the number of rows in the section.
return usernames.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! UITableViewCell
cell.textLabel?.text = usernames[indexPath.row]
let followedObjectId = userids[indexPath.row]
if isFollowing[followedObjectId] == true {
cell.accessoryType = UITableViewCellAccessoryType.Checkmark
}
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
var cell:UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
let followedObjectId = userids[indexPath.row]
if isFollowing[followedObjectId] == false {
isFollowing[followedObjectId] = true
cell.accessoryType = UITableViewCellAccessoryType.Checkmark
var following = PFObject(className: "followers")
following["following"] = userids[indexPath.row]
following["follower"] = PFUser.currentUser()?.objectId
following.saveInBackground()
} else {
isFollowing[followedObjectId] = false
cell.accessoryType = UITableViewCellAccessoryType.None
var query = PFQuery(className: "followers")
query.whereKey("follower", equalTo: PFUser.currentUser()!.objectId!)
query.whereKey("following", equalTo: userids[indexPath.row])
query.findObjectsInBackgroundWithBlock({ (objects, error) -> Void in
if let objects = objects {
for object in objects {
object.deleteInBackground()
}
}
})
}
}
}