在 swift 示例代码中获取 access_token 的 Instagram 授权：
使用前
别忘了填写
let redirectURI = ""
let clientID = ""
let clientSecret = ""
在 NetworkManager.swift 文件中
代码
用户.swift
import Foundation
class User {
var id: String?
var userName: String?
var fullName: String?
var profilePicture: String?
var bio: String?
var website: String?
var followsCount: Int?
var followedByCount: Int?
init(userDict:[String:AnyObject]) {
self.id = userDict["id"] as? String
self.userName = userDict["username"] as? String
self.fullName = userDict["full_name"] as? String
self.profilePicture = userDict["profile_picture"] as? String
self.bio = userDict["bio"] as? String
self.website = userDict["website"] as? String
if let countsDict = userDict["counts"] as? [String: AnyObject] {
self.followsCount = countsDict["follows"] as? Int
self.followedByCount = countsDict["followed_by"] as? Int
}
}
var description: String {
get {
var result = ""
result += descriptionString("id", value: id)
result += descriptionString("userName", value: userName)
result += descriptionString("fullName", value: fullName)
result += descriptionString("profilePicture", value: profilePicture)
result += descriptionString("bio", value: bio)
result += descriptionString("website", value: website)
result += descriptionInt("followsCount", value: followsCount)
result += descriptionInt("followedByCount", value: followedByCount)
return result
}
}
private func descriptionString(name: String, value: String?) -> String{
var result = "\(name): "
if let _value = value {
result += _value
} else {
result += "nil"
}
return result + "\n"
}
private func descriptionInt(name: String, value: Int?) -> String{
var result = "\(name): "
if let _value = value {
result += "\(_value)"
} else {
result += "nil"
}
return result + "\n"
}
}
NetworkManager.swift
import Foundation
class NetworkManager {
var delegate: NetworkManagerDelegate?
var accessToken: String? = nil
var code: String? = nil
let baseURLString = "https://api.instagram.com"
let clientID = ""
let redirectURI = "https://www.instagram.com/"
let clientSecret = ""
static let InstagramResponseError = "InstagramResponseError"
}
// MARK: Get/Set
extension NetworkManager {
var authentificationUrl: String {
get {
return "\(baseURLString)/oauth/authorize/?client_id=\(clientID)&redirect_uri=\(redirectURI)&response_type=code"
}
}
class var sharedInstance: NetworkManager {
struct Static {
static var onceToken: dispatch_once_t = 0
static var instance: NetworkManager? = nil
}
dispatch_once(&Static.onceToken) {
Static.instance = NetworkManager()
}
return Static.instance!
}
}
// MARK: Errors
extension NetworkManager {
func fetchError(jsonDataDict: [String: AnyObject]) -> NSError? {
var error: NSError? = nil
if let meta = jsonDataDict["meta"] as? [String:AnyObject] {
if let code = meta["code"] as? Int {
switch code {
case 400:
error = NSError(domain: NetworkManager.InstagramResponseError, code: code, userInfo: meta)
default:
break
}
}
}
return error
}
}
// MARK: Load Data
extension NetworkManager {
func newRequest(url: String, HTTPMethod: String, paramString: String?, completionHandler: ([String: AnyObject]?, NSURLResponse?, NSError?) -> Void) {
if let url = NSURL(string:url) {
let request = NSMutableURLRequest(URL: url)
request.HTTPMethod = HTTPMethod
if let paramString = paramString {
request.HTTPBody = paramString.dataUsingEncoding(NSUTF8StringEncoding)!
}
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { (data, response, error) in
do {
var json: [String: AnyObject]? = nil
var responseError: NSError? = error
if let jsonData = data {
if let jsonDataDict = try NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.AllowFragments) as? [String: AnyObject] {
if let _responseError = self.fetchError(jsonDataDict) {
responseError = _responseError
}
json = jsonDataDict
}
}
completionHandler(json, response, responseError)
} catch let err as NSError {
print(err.debugDescription)
}
}
task.resume()
}
}
func getAccessToken() {
if let code = self.code {
let urlString = "\(baseURLString)/oauth/access_token"
let paramString = "client_id=\(clientID)&client_secret=\(clientSecret)&grant_type=authorization_code&redirect_uri=\(redirectURI)&code=\(code)&scope=basic+public_content"
newRequest(urlString, HTTPMethod: "POST", paramString: paramString) { (json, response, error) in
if let json = json {
if let access_token = json["access_token"] as? String {
self.accessToken = access_token
NSLog("access_token: \(access_token)")
} else {
self.accessToken = nil
}
}
if let delegate = self.delegate {
delegate.getAccessTokenDidEnd(self.accessToken, error: error)
}
}
}
}
func loadProfile() {
if let accessToken = self.accessToken {
let urlString = "https://api.instagram.com/v1/users/self/?access_token=\(accessToken)"
newRequest(urlString, HTTPMethod: "GET", paramString: nil) { (json, response, error) in
var user: User? = nil
if let json = json {
if let userData = json["data"] as? [String:AnyObject] {
user = User(userDict: userData)
}
}
if let delegate = self.delegate {
delegate.loadProfileDidEnd(user, error: error)
}
}
}
}
}
NetworkManagerDelegate.swift
import Foundation
protocol NetworkManagerDelegate {
func getAccessTokenDidEnd(accessToken: String?, error: NSError?)
func loadProfileDidEnd(user: User?, error: NSError?)
}
ProfileTableViewCell.swift
import UIKit
class ProfileTableViewCell: UITableViewCell {
@IBOutlet var idLabel: UILabel!
@IBOutlet var userNameLabel: UILabel!
@IBOutlet var fullNameLabel: UILabel!
@IBOutlet var profilePictureLabel: UILabel!
@IBOutlet var bioLabel: UILabel!
@IBOutlet var websiteLabel: UILabel!
@IBOutlet var followsCountLabel: UILabel!
@IBOutlet var followedByCountLabel: UILabel!
func setData(user: User) {
setLabel(idLabel, value: user.id)
setLabel(userNameLabel, value: user.userName)
setLabel(fullNameLabel, value: user.fullName)
setLabel(profilePictureLabel, value: user.profilePicture)
setLabel(bioLabel, value: user.bio)
setLabel(websiteLabel, value: user.website)
setLabel(followsCountLabel, value: user.followsCount)
setLabel(followedByCountLabel, value: user.followedByCount)
}
private func setLabel(label: UILabel, value: String?) {
if let _value = value {
label.text = _value
} else {
label.text = "-"
}
}
private func setLabel(label: UILabel, value: Int?) {
if let _value = value {
label.text = "\(_value)"
} else {
label.text = "-"
}
}
}
ViewController.swift
import UIKit
class ViewController: UIViewController {
private var webView: UIWebView!
@IBOutlet var tableView: UITableView!
let instagramManager = NetworkManager.sharedInstance
var user: User? = nil
override func viewDidLoad() {
super.viewDidLoad()
instagramManager.delegate = self
//log out
// deleteChache()
initWebView()
initTableView()
}
private func actionWhenUserLogedIn() {
self.webView.hidden = true
}
func deleteChache() {
NSURLCache.sharedURLCache().removeAllCachedResponses()
if let cookies = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies {
for cookie in cookies {
NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie)
}
}
}
}
// MARK: NetworkManagerDelegate
extension ViewController: NetworkManagerDelegate {
func initNetworkManager() {
instagramManager.delegate = self
}
func getAccessTokenDidEnd(accessToken: String?, error: NSError?) {
instagramManager.loadProfile()
}
func loadProfileDidEnd(user: User?, error: NSError?) {
self.user = user
dispatch_async(dispatch_get_main_queue()) {
self.tableView.hidden = false
self.tableView.reloadData()
}
}
}
// MARK: UIWebView
extension ViewController: UIWebViewDelegate {
private func initWebView() {
webView = UIWebView(frame: CGRect(x: 0, y: 0, width: UIScreen.mainScreen().bounds.width, height: UIScreen.mainScreen().bounds.height))
webView.delegate = self
view.addSubview(webView)
authorizationRequestInWebView()
}
private func authorizationRequestInWebView() {
if let url = NSURL(string: instagramManager.authentificationUrl) {
let request = NSURLRequest(URL: url, cachePolicy: .ReloadIgnoringLocalAndRemoteCacheData, timeoutInterval: 10.0)
webView.loadRequest(request)
}
}
func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
let urlString = (request.URL?.absoluteString)!
if let range = urlString.rangeOfString(instagramManager.redirectURI + "?code=") {
let location = range.endIndex
let code = urlString.substringFromIndex(location)
instagramManager.code = code
NSLog("code: \(code)")
instagramManager.getAccessToken()
actionWhenUserLogedIn()
return false
}
return true
}
}
// MARK: UITableView
extension ViewController: UITableViewDataSource, UITableViewDelegate {
func initTableView() {
tableView.delegate = self
tableView.dataSource = self
tableView.hidden = true
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("ProfileTableViewCell")!
if let profileTableViewCell = cell as? ProfileTableViewCell {
if let user = self.user {
profileTableViewCell.setData(user)
}
}
return cell
}
}
Main.storyboard