微博开发笔记上（未完待续）

新浪微博开发笔记

iPhone 项目目标

课程提纲

新浪微博接口地址

项目主题框架

主体架构确认的好处

新浪微博

新浪微博主体架构

UITabbarController

UINavigationController

UITabbarController

微博类型选择

UINavigationController

根原版新浪微博的区别

开源中国社区

官方网站

OSChina

与

GitHUB

的对比

私有

GitHUB

付费

使用

# 切换目录，MAC中目录的第一个字符如果是 `.` 表示改文件夹是隐藏文件夹
$ cd ~/.ssh
# 查看当前目录文件
$ ls

# 生成 RSA 密钥对
# 1> "" 中输入个人邮箱
# 2> 提示输入私钥文件名称，直接回车
# 3> 提示输入密码，可以随便输入，只要本次能够记住即可
$ ssh-keygen -t rsa -C "xxx@126.com"

# 查看公钥内容
$ cat id_rsa.pub

# 测试 SSH 连接
$ ssh -T git@git.oschina.net

# 终端提示 `Welcome to Git@OSC, 刀哥!` 说明连接成功

# 切换至项目目录
$ cd 项目目录

# 克隆项目，地址可以在项目首页复制
$ git clone git@git.oschina.net:xxx/ProjectName.git

gitignore

# ~/dev/github/gitignore/ 是保存 gitignore 的目录
$ cp ~/dev/github/gitignore/Swift.gitignore .gitignore

https://github.com/github/gitignore

gitignore

.gitignore

图片素材

素材对应的设备

点

1x

1x

与美工的配合

iPhone 6+

图标素材 & App 名称

图标素材

设置图标选项

Launch Screen File

Main.storyboard

启动图片

应用方向

添加图标

App 名称

Info.plist

CFBundleName

启动程序

AppDelegate

didFinishLaunchingWithOptions

window = UIWindow(frame: UIScreen.mainScreen().bounds)
window?.backgroundColor = UIColor.whiteColor()
window?.rootViewController = ViewController()

window?.makeKeyAndVisible()

添加启动图片

项目搭建

课程目标

创建文件

准备工作

删除模板文件

创建项目结构

主目录

Classes

二级目录

Module

子目录

创建项目文件

Main

:UITabBarController

功能模块

细节

UITableViewController

AppDelegate

didFinishLaunchingWithOptions

window?.rootViewController = MainViewController()

添加子控制器

功能需求

文件准备

TabBar

Images.xcassets

代码实现

添加第一个视图控制器

override func viewDidLoad() {
super.viewDidLoad()

addChildViewController()
}

private func addChildViewController() {
tabBar.tintColor = UIColor.orangeColor()

let vc = HomeTableViewController()
vc.title = "首页"
vc.tabBarItem.image = UIImage(named: "tabbar_home")

let nav = UINavigationController(rootViewController: vc)

addChildViewController(nav)
}

重构代码抽取参数

/// 添加控制器
///
/// - parameter vc       : 视图控制器
/// - parameter title    : 标题
/// - parameter imageName: 图像名称
private func addChildViewController(vc: UIViewController, title: String, imageName: String) {
tabBar.tintColor = UIColor.orangeColor()

let vc = HomeTableViewController()
vc.title = title
vc.tabBarItem.image = UIImage(named: imageName)

let nav = UINavigationController(rootViewController: vc)

addChildViewController(nav)
}

/// 添加所有子控制器
private func addChildViewControllers() {
addChildViewController(HomeTableViewController(), title: "首页", imageName: "tabbar_home")
addChildViewController(MessageTableViewController(), title: "消息", imageName: "tabbar_message_center")
addChildViewController(DiscoverTableViewController(), title: "发现", imageName: "tabbar_discover")
addChildViewController(ProfileTableViewController(), title: "我", imageName: "tabbar_profile")
}

自定义 TabBar

功能需求

需求分析

撰写

思路

tabBarItem

tabBarItem

代码实现

/// 添加所有子控制器
private func addChildViewControllers() {
// ...

addChildViewController(UIViewController())

// ...
}

// MARK: - 懒加载
/// 撰写按钮
private lazy var composedButton: UIButton = {
let btn = UIButton()

btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: UIControlState.Normal)
btn.setImage(UIImage(named: "tabbar_compose_icon_add_highlighted"), forState: UIControlState.Highlighted)
btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: UIControlState.Normal)
btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: UIControlState.Highlighted)

self.tabBar.addSubview(btn)

return btn
}()

override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()

setupComposeButton()
}

/// 设置撰写按钮位置
private func setupComposeButton() {
let w = tabBar.bounds.width / CGFloat(childViewControllers.count)
let rect = CGRect(x: 0, y: 0, width: w, height: tabBar.bounds.height)

composedButton.frame = CGRectOffset(rect, 2 * w, 0)
}

btn.addTarget(self, action: "clickComposeButton", forControlEvents: UIControlEvents.TouchUpInside)

/// 点击撰写按钮
func clickComposeButton() {
print(__FUNCTION__)
}

private

阶段性小结

let w = tabBar.bounds.width / CGFloat(childViewControllers.count)

private

运行循环

消息机制

private

第三方框架

项目中使用到以下第三方框架

AFNetworking

SDWebImage

SVProgressHUD

Pod 安装

$ cd

Podfile

$ vim Podfile

use_frameworks!
platform :ios, '8.0'
pod 'AFNetworking'
pod 'SDWebImage'
pod 'SVProgressHUD'

:wq

$ pod install

$ pod update

use_frameworks!

在终端提交添加的框架

# 将修改添加至暂存区
$ git add .

# 提交修改并且添加备注信息
$ git commit -m "添加第三方框架"

# 将修改推送到远程服务器
$ git push

修改项目版本

AFNetworking

NetworkTools

import AFNetworking

/// 网络工具类
class NetworkTools: AFHTTPSessionManager {

// 全局访问点
static let sharedNetworkTools: NetworkTools = {
let instance = NetworkTools(baseURL: NSURL(string: "https://api.weibo.com/")!)

return instance
}()
}

SDWebImage & SVProgressHUD

SVProgressHUD

SVProgressHUD

框架地址

与

MBProgressHUD

对比

SVProgressHUD

ARC

MBProgressHUD

ARC

MRC

使用

import SVProgressHUD

SVProgressHUD.showInfoWithStatus("正在玩命加载中...", maskType: SVProgressHUDMaskType.Gradient)

SDWebImage

import SDWebImage

let url = NSURL(string: "http://img0.bdstatic.com/img/image/6446027056db8afa73b23eaf953dadde1410240902.jpg")!
SDWebImageManager.sharedManager().downloadImageWithURL(url, options: SDWebImageOptions.allZeros, progress: nil) { (image, _, _, _, _) in
let data = UIImagePNGRepresentation(image)
data.writeToFile("/Users/liufan/Desktop/123.jpg", atomically: true)
}

单例

单例的目标

OC 中的单例

+ (instancetype)sharedManager {
static id instance;

static dispatch_once_t onceToken;
NSLog(@"%ld", onceToken);

dispatch_once(&onceToken, ^{
instance = [[self alloc] init];
});

return instance;
}

Swift 中的单例

static var instance: NetworkTools?
static var token: dispatch_once_t = 0

/// 在 swift 中类变量不能是存储型变量
class func sharedSoundTools() -> SoundTools {
dispatch_once(&token) { () -> Void in
instance = SoundTools()
}
return instance!
}

let

private static let instance = NetworkTools()
/// 在 swift 中类变量不能是存储型变量
class var sharedNetworkTools: NetworkTools {
return instance
}

static let sharedSoundTools = SoundTools()

OAuth

基本概念

特定的网站

特定的时段内

特定的资源

OAuth 授权流程图

注册应用程序

注册应用程序

微连接

移动应用

应用信息

高级信息

应用程序信息

加载授权页面

功能需求

接口文档

功能实现

准备工作

OAuth

OAuthViewController.swift

UIViewController

加载 OAuth 视图控制器

BaseTableViewController

///  用户登录
func visitorLoginViewWillLogin() {
let nav = UINavigationController(rootViewController: OAuthViewController())

presentViewController(nav, animated: true, completion: nil)
}

OAuthViewController

lazy var webView: UIWebView = {
return UIWebView()
}()

override func loadView() {
view = webView

title = "新浪微博"
navigationItem.rightBarButtonItem = UIBarButtonItem(title: "关闭", style: UIBarButtonItemStyle.Plain, target: self, action: "close")
}

///  关闭
func close() {
dismissViewControllerAnimated(true, completion: nil)
}

加载授权页面

NetworkTools

// MARK: - 应用程序信息
private var clientId = "113773579"
private var clientSecret = "a34f52ecaad5571bfed41e6df78299f6"
var redirectUri = "http://www.baidu.com"

/// 授权 URL
var oauthURL: NSURL {
return NSURL(string: "https://api.weibo.com/oauth2/authorize?client_id=\(clientId)&redirect_uri=\(redirectUri)")!
}

info.plist

ATS

<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>

override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)

webView.loadRequest(NSURLRequest(URL: NetworkTools.sharedNetworkTools.oauthURL))
}

// MARK: - UIWebView 代理方法
func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {
print(request)

return true
}

func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {

// 判断请求的 URL 中是否包含回调地址
let urlString = request.URL!.absoluteString
if !urlString.hasPrefix(NetworkTools.sharedNetworkTools.redirectUri) {
return true
}

guard let query = request.URL?.query where query.hasPrefix("code=") else {
print("取消授权")
close()

return false
}

let code = query.substringFromIndex(advance(query.startIndex, "code=".characters.count))
print("授权成功 \(code)")

NetworkTools.sharedNetworkTools.loadAccessToken(code)

return false
}

加载指示器

SVProgressHUD

import SVProgressHUD

func webViewDidStartLoad(webView: UIWebView) {
SVProgressHUD.show()
}

func webViewDidFinishLoad(webView: UIWebView) {
SVProgressHUD.dismiss()
}

///  关闭
func close() {
SVProgressHUD.dismiss()
dismissViewControllerAnimated(true, completion: nil)
}

AccessToken

课程目标

接口定义

文档地址

接口地址

HTTP 请求方式

请求参数

authorization_code

返回数据

UserAccount 模型

加载 AccessToken

NetworkTools

AccessToken

/// 使用 code 获取 accessToken
///
/// - parameter code: 请求码
func loadAccessToken(code: String) {
let urlString = "https://api.weibo.com/oauth2/access_token"
let parames = ["client_id": clientId,
"client_secret": clientSecret,
"grant_type": "authorization_code",
"code": code,
"redirect_uri": redirectUri]

POST(urlString, parameters: parames, success: { (_, JSON) -> Void in
print(JSON)
}) { (_, error) -> Void in
print(error)
}
}

OAuthViewController

NetworkTools.sharedNetworkTools.loadAccessToken(code)

Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/plain"

NetworkTools

// 设置反序列化数据格式集合
instance.responseSerializer.acceptableContentTypes = NSSet(objects: "application/json", "text/json", "text/javascript", "text/plain") as Set<NSObject>

/// 使用 code 获取 accessToken
///
/// - parameter code: 请求码
func loadAccessToken(code: String, finished: (result: [String: AnyObject]?, error: NSError?)->()) {
let urlString = "https://api.weibo.com/oauth2/access_token"
let parames = ["client_id": clientId,
"client_secret": clientSecret,
"grant_type": "authorization_code",
"code": code,
"redirect_uri": redirectUri]

POST(urlString, parameters: parames, success: { (_, JSON) in
finished(result: JSON as? [String: AnyObject], error: nil)
}) { (_, error) in
finished(result: nil, error: error)
}
}

private func loadAccessToken(code: String) {
NetworkTools.sharedNetworkTools.loadAccessToken(code) { (result, error) -> () in
if error != nil result == nil {
SVProgressHUD.showInfoWithStatus("网络不给力")

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * Int64(NSEC_PER_SEC)), dispatch_get_main_queue()) {
self.close()
}
return
}

print(result)
}
}

定义 UserAcount 模型

Model

UserAccount

/// 用于调用access_token，接口获取授权后的access token
var access_token: String?
/// access_token的生命周期，单位是秒数
var expires_in: String?
/// 当前授权用户的UID
var uid: String?

init(dict: [String: AnyObject]) {
super.init()

self.setValuesForKeysWithDictionary(dict)
}

override func setValue(value: AnyObject?, forUndefinedKey key: String) {}

let account = UserAccount(dict: result!)
print(account)

expires_in

expires_in

responseSerializer = AFHTTPResponseSerializer()
POST(urlString, parameters: parames, success: { (_, JSON) in
print(NSString(data: JSON as! NSData, encoding: NSUTF8StringEncoding))
finished(result: JSON as? [String: AnyObject], error: nil)
}) { (_, error) in
finished(result: nil, error: error)
}

Printable

description

getter

description

CustomStringConvertible

override var description: String {
let dict = ["access_token", "expires_in", "uid"]

return "\(dictionaryWithValuesForKeys(dict))"
}

CustomStringConvertible

description

设置过期日期

过期日期

/// token过期日期
var expiresDate: NSDate?

expiresDate = NSDate(timeIntervalSinceNow: expires_in)

description

let properties = ["access_token", "expires_in", "expiresDate", "uid"]

归档 & 解档

课程目标

归档 & 解档

归档 & 解档

class UserAccount: NSObject, NSCoding

// MARK: - NSCoding
func encodeWithCoder(aCoder: NSCoder) {
aCoder.encodeObject(access_token, forKey: "access_token")
aCoder.encodeDouble(expires_in, forKey: "expires_in")
aCoder.encodeObject(expiresDate, forKey: "expiresDate")
aCoder.encodeObject(uid, forKey: "uid")
}

required init?(coder aDecoder: NSCoder) {
access_token = aDecoder.decodeObjectForKey("access_token") as? String
expires_in = aDecoder.decodeDoubleForKey("expires_in")
expiresDate = aDecoder.decodeObjectForKey("expiresDate") as? NSDate
uid = aDecoder.decodeObjectForKey("uid") as? String
}

/// 归档保存路径
private static let accountPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true).last!.stringByAppendingPathComponent("account.plist")

/// 保存账号
func saveAccount() {
NSKeyedArchiver.archiveRootObject(self, toFile: UserAccount.accountPath)
}

/// 加载账号
class func loadAccount() -> UserAccount? {
let account = NSKeyedUnarchiver.unarchiveObjectWithFile(accountPath) as? UserAccount

return account
}

OAuthViewController.swift

loadAccessToken

// 保存用户账号信息
UserAccount(dict: result!).saveAccount()

/// 用户账号
private static var userAccount: UserAccount?

/// 加载账号
class func loadAccount() -> UserAccount? {
if userAccount == nil {
// 解档用户账户信息
userAccount = NSKeyedUnarchiver.unarchiveObjectWithFile(accountPath) as? UserAccount
}

// 如果用户账户存在，判断是否过期
if let date = userAccount?.expiresDate where date.compare(NSDate()) == NSComparisonResult.OrderedAscending {
userAccount = nil
}

return userAccount
}

access_token

/// 用户登录标记
var userLogon = UserAccount.loadAccount() != nil

加载用户信息

课程目标

AccessToken

接口定义

文档地址

接口地址

HTTP 请求方式

请求参数

返回数据

测试 URL

代码实现

NetworkTools

/// 错误域
private let errorDomainName = "com.itheima.network.errorDomain"

// MARK: - 封装网络请求方法
/// 完成回调类型
typealias HMFinishedCallBack = (result: [String: AnyObject]?, error: NSError?) -> ()

/// GET 请求
///
/// - parameter urlString: URL 地址
/// - parameter params   : 参数字典
/// - parameter finished : 完成回调
private func requestGET(urlString: String, params: [String: AnyObject], finished: HMFinishedCallBack) {

GET(urlString, parameters: params, success: { _, JSON in

if let result = JSON as? [String: AnyObject] {
finished(result: result, error: nil)
} else {
finished(result: nil, error: NSError(domain: errorDomainName, code: -10000, userInfo: ["error": "空数据"]))
}

}) { _, error in
finished(result: nil, error: error)
}
}

/// AccessToken 不存在通知
let HMAccessTokenEmptyNotification = "HMAccessTokenEmptyNotification"

/// 生成 Token 参数字典
private func tokenDict() -> [String: AnyObject]? {
if let token = UserAccount.loadAccount()?.access_token {
return ["access_token": token]
}
NSNotificationCenter.defaultCenter().postNotificationName(HMAccessTokenEmptyNotification, object: nil)
return nil
}

NetworkTools

// MARK: - 加载用户信息
func loadUserInfo(uid: Int, finished: (result: [String: AnyObject]?, error: NSError?) -> ()) {
let urlString = "2/users/show.json"

guard var params = tokenDict() else {
return
}

params["uid"] = uid
requestGET(urlString, params: params) { (result, error) -> () in
finished(result: result, error: error)
}
}

UserAccount

func loadUserInfo() {
NetworkTools.sharedTools.loadUserInfo(uid!) { (result, error) -> () in
print(result)
}
}

UserAccount(dict: result!).loadUserInfo()

/// 友好显示名称
var name: String?
/// 用户头像地址（大图），180×180像素
var avatar_large: String?

// MARK: - 加载用户信息
func loadUserInfo(finished: (error: NSError?) -> ()) {
NetworkTools.sharedTools.loadUserInfo(uid!) { (result, error) -> () in
if let dict = result {
self.name = dict["name"] as? String
self.avatar_large = dict["avatar_large"] as? String

self.saveAccount()
}
finished(error: error)
}
}

description

let properties = ["access_token", "expires_in", "uid", "expiresDate", "name", "avatar_large"]

func encodeWithCoder(aCoder: NSCoder) {
aCoder.encodeObject(access_token, forKey: "access_token")
aCoder.encodeDouble(expires_in, forKey: "expires_in")
aCoder.encodeObject(expiresDate, forKey: "expiresDate")
aCoder.encodeObject(uid, forKey: "uid")
aCoder.encodeObject(name, forKey: "name")
aCoder.encodeObject(avatar_large, forKey: "avatar_large")
}

required init?(coder aDecoder: NSCoder) {
access_token = aDecoder.decodeObjectForKey("access_token") as? String
expires_in = aDecoder.decodeDoubleForKey("expires_in")
expiresDate = aDecoder.decodeObjectForKey("expiresDate") as? NSDate
uid = aDecoder.decodeObjectForKey("uid") as? String
name = aDecoder.decodeObjectForKey("name") as? String
avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
}

loadAccessToken

/// 使用授权码换取 AccessToken
private func loadAccessToken(code: String) {
NetworkTools.sharedTools.loadAccessToken(code) { (result, error) -> () in
if error != nil || result == nil {
self.loadError()

return
}

// 加载用户账号信息
UserAccount(dict: result!).loadUserInfo() { (error) -> () in
if error != nil {
self.loadError()

return
}

print(UserAccount.loadAccount())
}
}
}

/// 数据加载错误
private func loadError() {
SVProgressHUD.showInfoWithStatus("您的网络不给力")

// 延时一段时间再关闭
let when = dispatch_time(DISPATCH_TIME_NOW, Int64(1 * NSEC_PER_SEC))
dispatch_after(when, dispatch_get_main_queue()) {
self.close()
}
}

特定的网站

特定的时段内

特定的资源

调整网络代码

/// POST 请求
///
/// - parameter urlString: URL 地址
/// - parameter params   : 参数字典
/// - parameter finished : 完成回调
private func requestPOST(urlString: String, params: [String: AnyObject], finished: HMFinishedCallBack) {

POST(urlString, parameters: params, success: { _, JSON in

if let result = JSON as? [String: AnyObject] {
finished(result: result, error: nil)
} else {
finished(result: nil, error: NSError(domain: errorDomainName, code: -10000, userInfo: ["error": "空数据"]))
}

}) { _, error in
print(error)
finished(result: nil, error: error)
}
}

/// 加载 Token
func loadAccessToken(code: String, finished: HMFinishedCallBack) {
let urlString = "https://api.weibo.com/oauth2/access_token"
let params = ["client_id": clientId,
"client_secret": appSecret,
"grant_type": "authorization_code",
"code": code,
"redirect_uri": redirectUri]

requestPOST(urlString, params: params) { (result, error) -> () in
finished(result: result, error: error)
}
}

新特性

课程目标

根视图控制器

新特性功能

准备文件

Module

NewFeature

NewFeatureViewController.swift

UICollectionViewController

NewFeatureViewController.swift

代码实现

AppDelegate

window?.rootViewController = NewFeatureViewController()

CollectionViewController

init()

/// 界面布局
private let layout = UICollectionViewFlowLayout()

init() {
super.init(collectionViewLayout: layout)
}

required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}

/// 新特性 Cell
class NewFeatureCell: UICollectionViewCell {
var imageIndex: Int = 0 {
didSet {
iconView.image = UIImage(named: "new_feature_\(imageIndex + 1)")
}
}

override init(frame: CGRect) {
super.init(frame: frame)

contentView.addSubview(iconView)

// 自动布局
// 1> 图片视图
iconView.translatesAutoresizingMaskIntoConstraints = false
contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[subview]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["subview": iconView]))
contentView.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[subview]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["subview": iconView]))
}

required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}

// 懒加载控件
lazy var iconView: UIImageView = UIImageView()
}

override func viewDidLoad() {
super.viewDidLoad()

// 注册可重用 Cell
self.collectionView!.registerClass(NewFeatureCell.self, forCellWithReuseIdentifier: reuseIdentifier)
}

/// 新特性布局
private class NewFeatureLayout: UICollectionViewFlowLayout {

private override func prepareLayout() {
itemSize = collectionView!.bounds.size
minimumInteritemSpacing = 0
minimumLineSpacing = 0
scrollDirection = UICollectionViewScrollDirection.Horizontal

collectionView?.pagingEnabled = true
collectionView?.showsHorizontalScrollIndicator = false
collectionView?.bounces = false
}
}

prepareLayout

/// 界面布局
private let layout = NewFeatureLayout()

/// 按钮
lazy var startButton: UIButton = {
let button = UIButton()

button.setBackgroundImage(UIImage(named: "new_feature_finish_button"), forState: UIControlState.Normal)
button.setBackgroundImage(UIImage(named: "new_feature_finish_button_highlighted"), forState: UIControlState.Highlighted)
button.setTitle("开始体验", forState: UIControlState.Normal)

return button
}()

// 2> 开始按钮
startButton.translatesAutoresizingMaskIntoConstraints = false
contentView.addConstraint(NSLayoutConstraint(item: startButton, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: contentView, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0))
contentView.addConstraint(NSLayoutConstraint(item: startButton, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: contentView, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: -160))

动画显示

开始体验

按钮

NewFeatureCell

showStartButton

/// 动画显示按钮
func showStartButton() {
startButton.hidden = false

startButton.transform = CGAffineTransformMakeScale(0, 0)
startButton.userInteractionEnabled = false

UIView.animateWithDuration(1.2, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 10.0, options: UIViewAnimationOptions(rawValue: 0), animations: {

self.startButton.transform = CGAffineTransformIdentity

}) { _ in
self.startButton.userInteractionEnabled = true
}
}

collectionView

完成显示Cell

// 参数 cell, indexPath 是前一个 cell 和 indexPath
override func collectionView(collectionView: UICollectionView, didEndDisplayingCell cell: UICollectionViewCell, forItemAtIndexPath indexPath: NSIndexPath) {

let indexPath = collectionView.indexPathsForVisibleItems().last!

if indexPath.item == imageCount - 1 {
(collectionView.cellForItemAtIndexPath(indexPath) as! NewFeatureCell).showStartButton()
}
}

cell

indexPath

cell

cell

隐藏状态栏

override func prefersStatusBarHidden() -> Bool {
return true
}

欢迎界面

新特性

欢迎

准备文件

NewFeature

WelcomeViewController.swift

UIViewController

Welcome.storyboard

WelcomeViewController

代码实现

AppDelegate

window?.rootViewController = WelcomeViewController()

// MARK: - 懒加载控件
/// 背景图片
private lazy var backImageView: UIImageView = UIImageView(image: UIImage(named: "ad_background"))
/// 头像视图
private lazy var iconView: UIImageView = {
let iv = UIImageView(image: UIImage(named: "avatar_default_big"))

iv.layer.masksToBounds = true
iv.layer.cornerRadius = 45

return iv
}()
/// 文本标签
private lazy var messageLabel: UILabel = {
let label = UILabel()

label.text = "欢迎归来"

return label
}()

/// 头像底部约束
private var iconBottomCons: NSLayoutConstraint?

override func viewDidLoad() {
super.viewDidLoad()

prepareUI()
}

/// 准备 UI
private func prepareUI() {
view.addSubview(backImageView)
view.addSubview(iconView)
view.addSubview(messageLabel)

// 自动布局
// 1> 背景图片
backImageView.translatesAutoresizingMaskIntoConstraints = false
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[subview]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["subview": backImageView]))
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[subview]-0-|", options: NSLayoutFormatOptions(rawValue: 0), metrics: nil, views: ["subview": backImageView]))
// 2> 头像
iconView.translatesAutoresizingMaskIntoConstraints = false
view.addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0))
view.addConstraint(NSLayoutConstraint(item: view, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: 160))
iconBottomCons = view.constraints.last
// 3> 标签
messageLabel.translatesAutoresizingMaskIntoConstraints = false
view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.CenterX, multiplier: 1.0, constant: 0))
view.addConstraint(NSLayoutConstraint(item: messageLabel, attribute: NSLayoutAttribute.Top, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: 20))
}

override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)

iconBottomCons?.constant = UIScreen.mainScreen().bounds.height - 240

UIView.animateWithDuration(1.2, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 10.0, options: UIViewAnimationOptions(rawValue: 0), animations: {
self.view.layoutIfNeeded()
}, completion: nil)
}

usingSpringWithDamping

0.0f

1.0f

弹簧

initialSpringVelocity

if let urlString = UserAccount.loadAccount()?.avatar_large {
iconView.sd_setImageWithURL(NSURL(string: urlString)!)
}

view.addConstraint(NSLayoutConstraint(item: iconView, attribute: NSLayoutAttribute.Height, relatedBy: NSLayoutRelation.Equal, toItem: nil, attribute: NSLayoutAttribute.NotAnAttribute, multiplier: 1.0, constant: 90))
view.addConstraint(NSLayoutConstraint(item: view, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: iconView, attribute: NSLayoutAttribute.Bottom, multiplier: 1.0, constant: 160))

代码评审(Code Review)

面对面

Code Review的意识

Developer

提交可工作的代码

提交可维护的代码

评审建议

代码评审的方式

设计

可读性

健壮性

Code Review

评审内容

架构/设计

一个类既干UI的事情，又干逻辑的事情

代码风格

单一职责

Review Your Own Code First

OAuthViewController

loadAccessToken

UserAccount

类属性

类函数

通过类名调用

对象

演练 & 体会

loadAccount()

sharedUserAccount

class var sharedUserAccount: UserAccount? {
// 1. 判断账户是否存在
if userAccount == nil {
// 解档 － 如果没有保存过,解档结果可能仍然是 nil
userAccount = NSKeyedUnarchiver.unarchiveObjectWithFile(accountPath) as? UserAccount
}

// 2. 判断日期
if let date = userAccount?.expiresDate where date.compare(NSDate()) == NSComparisonResult.OrderedAscending {
// 如果已经过期，需要清空账号记录
userAccount = nil
}

return userAccount
}

NetworkTools

HMNetFinishedCallBack

定义网络访问错误枚举

/// 网络访问错误
private enum HMNetworkError: Int {
case emptyDataError = -1
case emptyTokenError = -2

private var description: String {
switch self {
case .emptyDataError:
return "空数据"
case .emptyTokenError:
return "AccessToken 错误"
}
}

private var error: NSError {
return NSError(domain: HMErrorDomainName, code: rawValue, userInfo: [HMErrorDomainName: description])
}
}

requestGET

finished(result: nil, error: HMNetworkError.emptyDataError.error)

loadUserInfo

// 判断 token 是否存在
if UserAccount.sharedUserAccount?.access_token == nil {
let error = HMNetworkError.emptyTokenError.error
print(error)
finished(result: nil, error: error)
return
}

UserAccount

封装 AFN 的 POST 方法

/// POST 请求
///
/// :param: urlString URL 地址
/// :param: params    参数字典
/// :param: finished  完成回调
private func requestPOST(urlString: String, params: [String: AnyObject], finished: HMNetFinishedCallBack) {

POST(urlString, parameters: params, success: { (_, JSON) -> Void in

if let result = JSON as? [String: AnyObject] {
// 有结果的回调
finished(result: result, error: nil)
} else {
// 没有错误，同时没有结果
print("没有数据 GET Request \(urlString)")
finished(result: nil, error: HMNetworkError.emptyDataError.error)
}

}) { (_, error) -> Void in
print(error)

finished(result: nil, error: error)
}
}

/// 加载 Token
func loadAccessToken(code: String, finished: HMNetFinishedCallBack) {
let urlString = "https://api.weibo.com/oauth2/access_token"
let params = ["client_id": clientId,
"client_secret": appSecret,
"grant_type": "authorization_code",
"code": code,
"redirect_uri": redirectUri]

requestPOST(urlString, params: params, finished: finished)
}

整合网络访问方法

/// 网络访问方法
private enum HMNetworkMethod: String {
case GET = "GET"
case POST = "POST"
}

/// 网络请求
///
/// - parameter method   : 访问方法
/// - parameter urlString: URL 地址
/// - parameter params   : 参数自带呢
/// - parameter finished : 完成回调
private func request(method: HMNetworkMethod, urlString: String, params: [String: AnyObject], finished: HMNetFinishedCallBack) {

let successCallBack: (NSURLSessionTask!, AnyObject!) -> Void = { _, JSON in
if let result = JSON as? [String: AnyObject] {
// 有结果的回调
finished(result: result, error: nil)
} else {
// 没有错误，同时没有结果
print("没有数据 \(method) Request \(urlString)")
finished(result: nil, error: HMNetworkError.emptyDataError.error)
}
}
let failedCallBack: (NSURLSessionTask!, NSError!) -> Void = { _, error in
print(error)

finished(result: nil, error: error)
}

switch method {
case .GET:
GET(urlString, parameters: params, success: successCallBack, failure: failedCallBack)
case .POST:
POST(urlString, parameters: params, success: successCallBack, failure: failedCallBack)
}
}

自动布局框架

Tools

NewFeatureCell

iconView.ff_Fill(contentView)
startButton.ff_AlignInner(type: ff_AlignType.BottomCenter, referView: contentView, size: nil, offset: CGPoint(x: 0, y: -160))

WelcomeViewController

// 1> 背景图片
backImageView.ff_Fill(view)
// 2> 头像
let cons = iconView.ff_AlignInner(type: ff_AlignType.BottomCenter, referView: view, size: CGSize(width: 90, height: 90), offset: CGPoint(x: 0, y: -160))
// 记录底边约束
iconBottomCons = iconView.ff_Constraint(cons, attribute: NSLayoutAttribute.Bottom)

// 3> 标签
label.ff_AlignVertical(type: ff_AlignType.BottomCenter, referView: iconView, size: nil, offset: CGPoint(x: 0, y: 16))

iconBottomCons?.constant = -UIScreen.mainScreen().bounds.height - iconBottomCons!.constant