如何从其他视图控制器

Question

我使用的Xcode 4.6.1开发的iOS 6

我有两个视图控制器访问性能。我想在viewController2访问viewController1定义的属性如下（但不工作）：

这是viewController1.m：

#import "viewController1.h" 

@interface viewController1() 

@property (nonatomic) MPMoviePlayerController *videoPlayer; 

@end 

@implementation viewController1 

... 

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

    ... 

    self.videoPlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL]; 

    ... 

    [self.videoPlayer play]; 

    ... 
} 

这是viewController2.m：

#import "viewController2.h" 
#import "viewController1.h" 

@interface viewController2() 

@end 

@implementation viewController2 

... 

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

    viewController1 *thePlayer; 
    [thePlayer.videoPlayer pause]; 

    //This is where I get an error: 
    //Property 'videoPlayer' not found on object of type 'viewController1 *' 
} 

我已经尝试了很多搜索，但我无法弄清楚我做错了什么。任何帮助将不胜感激。

谢谢！ :)

Answer 1

您已在viewController1.m中定义了videoPlayer属性，但导入了viewController1.h。

将videoPlayer移动到viewController1.h。请勿导入viewController1.m。