iOS新特性引导页

有一个注意点：

获取版本号

个叫做Version，一个叫做Build，这两个值都可以在Xcode 中选中target，点击“Summary”后看到。 Version在plist文件中的key是“CFBundleShortVersionString”，和AppStore上的版本号保持一致，Build在plist中的key是“CFBundleVersion”，代表build的版本号，该值每次build之后都应该增加1。这两个值都可以在程序中通过下面的代码获得：

 

1.Version

NSString *key = @"CFBundleShortVersionString";

2.build

NSString *key =@"CFBundleVersion";

---

1.在AppDelegate.m

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

     self.window.backgroundColor = [UIColor whiteColor];

     NSString *key = @"CFBundleShortVersionString";
     //上一个版本号，存沙盒
     NSString *lastVersion = [[NSUserDefaults standardUserDefaults] objectForKey:key];
     //当前版本号
     NSString *currentVersion = [NSBundle mainBundle].infoDictionary[key];
     NSLog(@"前面%@----当前%@",lastVersion,currentVersion);

     if ([currentVersion isEqualToString:lastVersion]) {
         self.window.rootViewController = [ViewController new]; //为真表示已有文件 曾经进入过主页
     }else{
         self.window.rootViewController =[LGFNEWfeatureViewController new];//为假表示没有文件，没有进入过主页
         [[NSUserDefaults standardUserDefaults] setObject:currentVersion forKey:key];
         [[NSUserDefaults standardUserDefaults] synchronize];
     }
     [self.window makeKeyAndVisible];

     return YES;
 }

2.在新特性的VC中：

 #import "LGFNEWfeatureViewController.h"
 #import "ViewController.h"

 #define LGFNEWFeatureCount 3
 @interface LGFNEWfeatureViewController ()<UIScrollViewDelegate>
 @property(nonatomic,strong)UIScrollView *scrollView;

 @property(nonatomic,strong)UIPageControl *pageControl;

 @end

 @implementation LGFNEWfeatureViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view.
     [self setScrollerView];
 }

 -(void)setScrollerView{
     self.scrollView = [UIScrollView new];
     _scrollView.frame = self.view.bounds;
     _scrollView.contentSize = CGSizeMake(LGFNEWFeatureCount *self.view.frame.size.width, );
     _scrollView.bounces = NO;
     _scrollView.pagingEnabled = YES;
     _scrollView.showsHorizontalScrollIndicator =NO;
     [self.view addSubview:_scrollView];
     for (int i =; i<LGFNEWFeatureCount; i++) {
         UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(self.view.frame.size.width*i, , self.view.frame.size.width, self.view.frame.size.height)];
         imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d",i+]];
         [_scrollView addSubview:imageView];
         if (i == LGFNEWFeatureCount-) {
             [self setupLastImageView:imageView];
         }
     }
     _scrollView.delegate = self;

     self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(, self.view.frame.size.height-, self.view.frame.size.width-,)];
     _pageControl.numberOfPages = LGFNEWFeatureCount;
     _pageControl.currentPageIndicatorTintColor =[UIColor orangeColor];
     _pageControl.userInteractionEnabled = NO;
     [self.view addSubview:_pageControl];

 }

 -(void)scrollViewDidScroll:(UIScrollView *)scrollView{
     self.pageControl.currentPage = self.scrollView.contentOffset.x/self.view.frame.size.width;
 }

 -(void)setupLastImageView:(UIImageView*)imageView{
     //开启用户交互
     imageView.userInteractionEnabled = YES;
     //1.分享
     UIButton *sharedBtn =[[UIButton alloc] initWithFrame:CGRectMake(, self.view.frame.size.height-, self.view.frame.size.width*0.5,self.view.frame.size.height*0.3)];

     [sharedBtn setImage:[UIImage imageNamed:@"shared"] forState:UIControlStateNormal];
      [sharedBtn setImage:[UIImage imageNamed:@"sharedselect"] forState:UIControlStateSelected];
     [sharedBtn setTitle:@"分享给大家" forState:UIControlStateNormal];
     sharedBtn.titleEdgeInsets = UIEdgeInsetsMake(, , , );
     sharedBtn.titleLabel.font = [UIFont systemFontOfSize:];
     [sharedBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
     [sharedBtn addTarget:self action:@selector(sharedBtnClick:) forControlEvents:UIControlEventTouchUpInside];
     [imageView addSubview:sharedBtn];

     //2.开始程序首页
     UIButton *startBtn = [[UIButton alloc] initWithFrame:CGRectMake(, self.view.frame.size.height*0.88, self.view.frame.size.width*0.4,self.view.frame.size.height*0.05)];
     startBtn.layer.cornerRadius = 12.0f;
     startBtn.layer.masksToBounds =YES;
     startBtn.backgroundColor = [UIColor orangeColor];
     [startBtn setTitle:@"开启APP之旅" forState:UIControlStateNormal];
     [startBtn addTarget:sharedBtn action:@selector(startBtnClick) forControlEvents:UIControlEventTouchUpInside];
     [imageView addSubview:startBtn];

 }

 -(void)sharedBtnClick:(UIButton *)sharedBtn{
     sharedBtn.selected = !sharedBtn.selected;
 }

 -(void)startBtnClick{
     UIWindow *win =[UIApplication sharedApplication].keyWindow;
     win.rootViewController = [ViewController new];
 }