Ios MPMoviePlayerController赢得'；使用故事板/显示黑屏时不播放

我试图在我的应用程序中在后台播放一段视频，但在我使用故事板时它不起作用。我读了一些关于ARC的东西，尝试了所有的方法，但我的视频不会简单地播放。我尝试了完全相同的方法，但在另一个项目中，我删除了故事板文件，并且成功了。我需要在我使用故事板的项目中使用它。请帮帮我

代码如下：

ViewController.m:

#import "AnimatedLoginViewController.h"
#import <AVFoundation/AVFoundation.h>
#import <MediaPlayer/MediaPlayer.h>
#import <QuartzCore/QuartzCore.h>

@interface ViewController (){
    MPMoviePlayerController *player;
}

@property (nonatomic, strong) MPMoviePlayerController *player;

@end

@implementation ViewController

@synthesize player;

- (void)viewDidLoad
{
    [super viewDidLoad];

    CGRect screen = [[UIScreen mainScreen] bounds];

    NSURL *movieUrl = [[NSBundle mainBundle] URLForResource:@"background"  withExtension:@"mp4"];

    self.player = [[MPMoviePlayerController alloc] initWithContentURL:movieUrl];

    player.view.frame = screen;
    player.scalingMode = MPMovieScalingModeFill;
    [self.player setControlStyle:MPMovieControlStyleNone];
    [self.view addSubview:player.view];
    [player prepareToPlay];


    UIImageView *logo = [[UIImageView alloc] initWithFrame:CGRectMake(65, 90, 190, 40)];
    logo.backgroundColor = [UIColor clearColor];
    [logo setImage:[UIImage imageNamed:@"logo_welcome.png"]];

    [self.view addSubview:logo];


    UIFont *boldFont = [UIFont fontWithName:@"HelveticaNeue-Bold" size:16.0];
    UIFont *defaultFont = [UIFont fontWithName:@"HelveticaNeue" size:16.0];


    NSDictionary * attributes = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor whiteColor], defaultFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    NSDictionary * attributesBold = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor whiteColor], boldFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    attributes = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor blackColor], defaultFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    attributesBold = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor blackColor], boldFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    UIButton *emailButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [emailButton setFrame:CGRectMake(10, screen.size.height==568?455:370, 300, 43)];

    attributedString = [[NSMutableAttributedString alloc] init];
    [attributedString appendAttributedString:[[NSAttributedString alloc] initWithString:@"Enter your work " attributes:attributes]];

    [attributedString appendAttributedString:[[NSAttributedString alloc] initWithString:@"Email" attributes:attributesBold]];
    [emailButton setAttributedTitle:attributedString forState:UIControlStateNormal];

    [emailButton setBackgroundImage:[UIImage imageNamed:@"SignInMailButton.png"] forState:UIControlStateNormal];
    [emailButton setBackgroundImage:[UIImage imageNamed:@"SignInMailButtonTap.png"] forState:UIControlStateHighlighted];
    [emailButton setBackgroundImage:[UIImage imageNamed:@"SignInMailButtonTap.png"] forState:UIControlStateSelected];
    [emailButton setEnabled:YES];
    [self.view addSubview:emailButton];


    boldFont = [UIFont fontWithName:@"HelveticaNeue-Bold" size:14.0];
    defaultFont = [UIFont fontWithName:@"HelveticaNeue" size:14.0];

    attributes = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor grayColor], defaultFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    attributesBold = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[UIColor whiteColor], boldFont, nil] forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName, NSFontAttributeName, nil]];

    UIButton *signInButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [signInButton setFrame:CGRectMake(10, screen.size.height==568?500:410, 300, 43)];

    attributedString = [[NSMutableAttributedString alloc] init];
    [attributedString appendAttributedString:[[NSAttributedString alloc] initWithString:@"Do you have an activation code? " attributes:attributes]];

    [attributedString appendAttributedString:[[NSAttributedString alloc] initWithString:@"Enter now" attributes:attributesBold]];
    [signInButton setAttributedTitle:attributedString forState:UIControlStateNormal];
    [signInButton setEnabled:YES];
    [self.view addSubview:signInButton];


    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(playVideo)
                                                 name:MPMoviePlayerReadyForDisplayDidChangeNotification
                                               object:player];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(moviePlayerDidFinish:)
                                                 name:MPMoviePlayerPlaybackDidFinishNotification
                                               object:self.player];

    [player play];
}

- (void)moviePlayerDidFinish:(NSNotification *)note
{
    if (note.object == self.player) {
        NSInteger reason = [[note.userInfo objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey] integerValue];
        if (reason == MPMovieFinishReasonPlaybackEnded)
        {
            [self.player play];
        }
    }
}

-(void)playVideo{
    [player play];
}

@end

#导入“AnimatedLoginViewController.h”
#进口
#进口
#进口
@界面视图控制器（）{
MPMoviePlayerController*播放器；
}
@属性（非原子，强）MPMoviePlayerController*播放器；
@结束
@实现视图控制器
@综合玩家；
-（无效）viewDidLoad
{
[超级视图下载]；
CGRect屏幕=[[UIScreen mainScreen]边界]；
NSURL*movieUrl=[[NSBundle mainBundle]URLForResource:@“background”带扩展名：@“mp4”]；
self.player=[[MPMoviePlayerController alloc]initWithContentURL:movieUrl]；
player.view.frame=屏幕；
player.scalingMode=MPMovieScalingModeFill；
[self.player setControlStyle:MPMovieControlStyleNone]；
[self.view addSubview:player.view]；
[玩家准备玩]；
UIImageView*徽标=[[UIImageView alloc]initWithFrame:CGRectMake（65,90,190,40）]；
logo.backgroundColor=[UIColor clearColor]；
[logo setImage:[UIImage ImageName:@“logo_welcome.png”]；
[self.view addSubview:logo]；
UIFont*boldFont=[UIFont fontWithName:@“HelveticaNeue粗体”大小：16.0]；
UIFont*defaultFont=[UIFont fontWithName:@“HelveticaNeue”大小：16.0]；
NSDictionary*attributes=[NSDictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor whiteColor]，defaultFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]；
NSDictionary*attributesBold=[NSDictionary Dictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor whiteColor]，boldFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]；
attributes=[NSDictionary Dictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor blackColor]，defaultFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]]；
attributesBold=[NSDictionary Dictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor blackColor]，boldFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]；
UIButton*emailButton=[UIButton按钮类型：UIButtonTypeCustom]；
[emailButton setFrame:CGRectMake（10，屏幕大小高度==568？455:370300，43）]；
attributedString=[[NSMutableAttributedString alloc]init]；
[AttributeString AppendedAttributeString:[[NSAttributeString alloc]initWithString:@“输入您的工作”属性：属性]]；
[AttributeString AppendedAttributeString:[[NSAttributeString alloc]initWithString:@“电子邮件”属性：AttributeBold]]；
[emailButton setAttributedTitle:attributedString for状态：UIControlStateNormal]；
[emailButton setBackgroundImage:[UIImage ImageName:@“SignInMailButton.png”]用于状态：UIControlStateNormal]；
[emailButton setBackgroundImage:[UIImage ImageName:@“SignInMailButtonTap.png”]用于状态：UIControlStateHighlighted]；
[emailButton setBackgroundImage:[UIImage ImageName:@“SignInMailButtonTap.png”]用于状态：UIControlStateSelected]；
[emailButton设置已启用：是]；
[self.view addSubview:emailButton]；
boldFont=[UIFont fontWithName:@“HelveticaNeue Bold”大小：14.0]；
defaultFont=[UIFont fontWithName:@“HelveticaNeue”大小：14.0]；
attributes=[NSDictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor grayColor]，defaultFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]]；
attributesBold=[NSDictionary Dictionary Dictionary WithObjects:[NSArray arrayWithObjects:[UIColor whiteColor]，boldFont，nil]forKeys:[NSArray arrayWithObjects:NSForegroundColorAttributeName，NSFontAttributeName，nil]；
UIButton*signInButton=[UIButton按钮类型：UIButtonTypeCustom]；
[SigninButtonSetFrame:CGRectMake（10，屏幕大小高度==568？500:410300，43）]；
attributedString=[[NSMutableAttributedString alloc]init]；
[attributedString appendAttributedString:[[NSAttributedString alloc]initWithString:@“您有激活码吗？”属性：属性]]；
[AttributeString AppendedAttributeString:[[NSAttributeString alloc]initWithString:@“立即输入”属性：AttributeBold]]；
[登录按钮setAttributedTitle:attributedString for状态：UIControlStateNormal]；
[登录按钮设置启用：是]；
[self.view addSubview:登录按钮]；
[[NSNotificationCenter defaultCenter]添加观察者：self
选择器：@selector（播放视频）
名称：MPMoviePlayerReadyFordDisplayDidChangeNotification
对象：玩家]；
[[NSNotificationCenter defaultCenter]添加观察者：self
选择器：@selector（moviePlayerDidFinish:）
名称：MPMoviePlayerPlaybackDidFinishNotification
对象：self.player]；
[玩家游戏]；
}
-（无效）影剧演员设计：（NSNotification*）注释
{
if（note.object==self.player）{
NSInteger原因=[[note.userInfo objectForKey:MPMoviePlayerPlaybackDidFinishReasonUserInfoKey]integerValue]；
如果（原因==MPMovieFinishRasonPlayBackend）
{
[self.player play]；
}
}
}
-（无效）播放视频{
[玩家游戏]；
}
@结束

故事板中有哪些控制器？你看到电影播放器了吗，但它不播放？我没有使用任何控制器。我正在使用这个库，请查看：对不起，我说的是视图控制器。显而易见