直接写代码

#import "AppDelegate.h"
#import "WSMovieController.h"

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    NSString *versionCache = [[NSUserDefaults standardUserDefaults] objectForKey:@"VersionCache"];//本地缓存的版本号  第一次启动的时候本地是没有缓存版本号的。
    NSString *version = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];//当前应用版本号
    
    if (![versionCache isEqualToString:version]) //如果本地缓存的版本号和当前应用版本号不一样，则是第一次启动（更新版本也算第一次启动）
    {
        WSMovieController *wsCtrl = [[WSMovieController alloc]init];
        wsCtrl.movieURL = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"qidong"ofType:@"mp4"]];//选择本地的视屏
        self.window.rootViewController = wsCtrl;
        
        //设置上下面这句话，将当前版本缓存到本地，下次对比一样，就不走启动视屏了。
        //也可以将这句话放在WSMovieController.m的进入应用方法里面
        //为了让每次都可以看到启动视屏，这句话先注释掉
        //[[NSUserDefaults standardUserDefaults] setObject:version forKey:@"VersionCache"];

    }else{
        //不是首次启动
        RootTabBarController *rootTabCtrl = [[RootTabBarController alloc]init];
        self.window.rootViewController = rootTabCtrl;
    }
    return YES;
}

#import <UIKit/UIKit.h>
@interface WSMovieController : UIViewController
@property(nonatomic,strong)NSURL *movieURL;
@end

#import "WSMovieController.h"
#import <AVFoundation/AVFoundation.h>
#import <MediaPlayer/MediaPlayer.h>
#import <AVKit/AVKit.h>

#import "RootTabBarController.h"
@interface WSMovieController ()
@property (strong, nonatomic) MPMoviePlayerController *player;

@end

@implementation WSMovieController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    
    
    [self SetupVideoPlayer];
}


- (void)SetupVideoPlayer
{
    self.player = [[MPMoviePlayerController alloc] initWithContentURL:_movieURL];
    [self.view addSubview:self.player.view];
    self.player.shouldAutoplay = YES;
    [self.player setControlStyle:MPMovieControlStyleNone];
    self.player.repeatMode = MPMovieRepeatModeOne;
    [self.player.view setFrame:[UIScreen mainScreen].bounds];
    self.player.view.alpha = 0;
    [UIView animateWithDuration:3 animations:^{
        self.player.view.alpha = 1;
        [self.player prepareToPlay];
    }];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playbackStateChanged) name:MPMoviePlayerLoadStateDidChangeNotification object:nil];

    [self setupLoginView];
}

- (void)setupLoginView
{
    //进入按钮
    UIButton *enterMainButton = [[UIButton alloc] init];
    enterMainButton.frame = CGRectMake(24, [UIScreen mainScreen].bounds.size.height - 32 - 48, [UIScreen mainScreen].bounds.size.width - 48, 48);
    enterMainButton.layer.borderWidth = 1;
    enterMainButton.layer.cornerRadius = 24;
    enterMainButton.layer.borderColor = [UIColor whiteColor].CGColor;
    [enterMainButton setTitle:@"进入应用" forState:UIControlStateNormal];
    enterMainButton.alpha = 0;
    [self.player.view addSubview:enterMainButton];
    [enterMainButton addTarget:self action:@selector(enterMainAction:) forControlEvents:UIControlEventTouchUpInside];
    
    
    [UIView animateWithDuration:3.0 animations:^{
        enterMainButton.alpha = 1.0;
    }];
}

#pragma mark - NSNotificationCenter
- (void)playbackStateChanged
{
    MPMoviePlaybackState playbackState = [self.player playbackState];
    if (playbackState == MPMoviePlaybackStateStopped || playbackState == MPMoviePlaybackStatePaused) {
        [self.player play];
    }
}


- (void)enterMainAction:(UIButton *)btn {
    NSLog(@"进入应用");
    RootTabBarController *rootTabCtrl = [[RootTabBarController alloc]init];
    self.view.window.rootViewController = rootTabCtrl;
}


@end