项目引导页并不难,使用 UICollectionView就可以完成,
1.首先获取应用程序的版本号,并存入本地,每次有新版本号,和存入本地的版本号,相比较
fileprivate func setupRootViewController() {
window = UIWindow(frame: UIScreen.main.bounds)
print(isNewVersion())
window?.rootViewController = isNewVersion() ? NewFeatureController() : UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController()
if isNewVersion() {
//此处应该加载用户操作教程
}else {
//此处加载广告页面
loadingAdvertisingPages()
}
window?.makeKeyAndVisible()
}
/**
判断是否是新版本
*/
fileprivate func isNewVersion() -> Bool {
// 获取当前的版本号
let versionString = Bundle.main.infoDictionary!["CFBundleShortVersionString"] as! String
let currentVersion = Double(versionString)!
// 获取到之前的版本号
let versionKey = "curVersion"
let sandboxVersion = UserDefaults.standard.double(forKey: versionKey)
// 保存当前版本号
UserDefaults.standard.set(currentVersion, forKey: versionKey)
UserDefaults.standard.synchronize()
// 对比
return currentVersion > sandboxVersion
}新建一个继承 UICollectionViewController 的类,具体的代码如下
import UIKit
private let reuseIdentifier = "Cell"
class NewFeatureController: UICollectionViewController {
fileprivate let itemCount =
fileprivate var layout = UICollectionViewFlowLayout()
//MARK: - 系统回调函数
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView!.register(NewFeatureCell.self, forCellWithReuseIdentifier: reuseIdentifier)
self.collectionView?.isPagingEnabled = true
self.collectionView?.bounces = false
self.collectionView?.showsHorizontalScrollIndicator = false
self.collectionView?.backgroundColor = UIColor.white
layout.scrollDirection = UICollectionViewScrollDirection.horizontal
layout.minimumLineSpacing =
layout.minimumInteritemSpacing =
layout.itemSize = UIScreen.main.bounds.size
}
init() {
super.init(collectionViewLayout:layout)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
// MARK: UICollectionViewDataSource
extension NewFeatureController {
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return itemCount
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! NewFeatureCell
cell.imageIndex = String(indexPath.item)
cell.setIndexPath(indexPath: indexPath, count: itemCount)
return cell
}
}import UIKit
class NewFeatureCell: UICollectionViewCell {
//MARK: - 懒加载属性
fileprivate lazy var imageView: UIImageView = UIImageView()
fileprivate lazy var startButton: UIButton = UIButton()
var imageName: String?
var imageIndex: String? {
didSet {
let screenH = UIScreen.main.bounds.height
//加载不同的图片
if screenH == {
imageName = imageIndex!+"welcome1136"
}else if screenH == {
imageName = imageIndex!+"welcome1334"
}else {
imageName = imageIndex!+"welcome1472"
}
imageView.image = UIImage(named: imageName!)
}
}
//MARK: - 构造函数
override init(frame: CGRect) {
super.init(frame: frame)
setupUI()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
//MARK: - 设置 UI界面相关
extension NewFeatureCell {
fileprivate func setupUI() {
startButton.setTitle("开始全新体验", for: .normal)
startButton.setTitleColor(UIColor.orange, for: .normal)
startButton.sizeToFit()
startButton.isHidden = true
startButton.addTarget(self, action: #selector(NewFeatureCell.startBtnClick), for: .touchUpInside)
self.contentView .addSubview(imageView)
self.contentView.addSubview(startButton)
}
//布局子控件的 frame
override func layoutSubviews() {
super.layoutSubviews()
imageView.frame = self.bounds
startButton.center = CGPoint(x: self.bounds.width * 0.5, y: self.bounds.height * 0.9)
}
func setIndexPath(indexPath: IndexPath, count: Int) {
if indexPath.item == count- {
startButton.isHidden = false
}else {
startButton.isHidden = true
}
}
}
//MARK: - 事件的点击
extension NewFeatureCell {
@objc fileprivate func startBtnClick() {
UIApplication.shared.keyWindow?.rootViewController = UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController()
}
}