如何從iPhone4相機捕捉單幀並在其他視圖中使用它？

Question

我捕捉使用

- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection 

現在我想看看在不同的UIViewController呈現， 這個圖像中的一個幀，但它不工作。我可以在同一個UIViewController上顯示拍攝的圖像，但在另一個上它看起來超出了範圍。

我嘗試了這種方式：

在captureOutput方法：

CFRetain(sampleBuffer); 
[photoView addFoto:sampleBuffer]; 
[self performSelectorOnMainThread:@selector(showPhoto:) withObject:nil waitUntilDone:YES]; 
CFRelease(sampleBuffer); 

PhotoView中是其它的UIViewController

- (void) addFoto:(CMSampleBufferRef) ref 
{ 
    UIImage *theImage = imageFromSampleBuffer(ref); 
    theImage = [[UIImage alloc] initWithCGImage:CGImageCreateCopy(theImage.CGImage)]; 
    capturedImages = [NSMutableArray array]; 
    [capturedImages addObject:theImage]; 
} 

- (void) showPhoto:(UIImage*) bild 
{ 
    [session stopRunning]; 

    photoView.modalTransitionStyle = UIModalTransitionStyleCoverVertical; 
    [self presentModalViewController:photoView animated:YES]; 
} 

並在PhotoView中的UIViewController viewDidLoad方法：

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    foto.image = [capturedImages objectAtIndex:0]; 
    // Do any additional setup after loading the view from its nib. 
} 

foto是UIImageView

爲什麼它不起作用？我絕望...... 在此先感謝。

Answer 1

- (void) showPhoto:(UIImage*) bild 
{ 
    [session stopRunning]; 

    photoView.modalTransitionStyle = UIModalTransitionStyleCoverVertical; 
    [self presentModalViewController:photoView animated:YES]; 
    photoView.foto.image = (UIImage*)[capturedImages objectAtIndex:0]; 
}