Question

大家好我在iOS 5中播放视频时遇到问题。当我构建程序时，我收到警告“隐藏实例变量的本地声明”，当我运行程序并点击按钮时，我得到一个“ SIGABRT”。我不知道该怎么做，我能得到的所有帮助都是有益的！

提前谢谢

我的.h文件

     #import <MediaPlayer/MediaPlayer.h> 

    @interface MainViewController : UIViewController {

    MPMoviePlayerController *moviePlayer;


}


-(IBAction)Video:(id)sender;

@end

MY .m文件

    #import "MainViewController.h"

@interface MainViewController ()

@end


@implementation MainViewController


-(IBAction)Video:(id)sender {

MPMoviePlayerController *moviePlayer;
NSString *path = [[NSBundle mainBundle] pathForResource:@"big-buck-bunny-clip" ofType:@"m4v"];
NSURL *videoURL = [NSURL fileURLWithPath:path];
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
[moviePlayer setControlStyle:MPMovieControlStyleDefault];
[moviePlayer.view setFrame: self.view.bounds];
[self.view addSubview: moviePlayer.view];
[moviePlayer prepareToPlay];
[moviePlayer play];
}



- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

@end

Answer 1

local declaration of hides instance variables

删除-(IBAction)Video:(id)sender方法的第一行。

MPMoviePlayerController *moviePlayer; //this line;

因为您已经在.h文件中声明了这样的变量。

Answer 2

表示您声明了两次相同的变量名，一个在.h文件中，另一个在.m文件中。

iOS 5电影播放器

2 个答案: