3

写真を撮り、写真をアルバムに保存するために AVCaptureSession を使用しています。ボタンをクリックすると、スナップショットが取得され、アルバムに保存されます。しかし、横向きモードを使用すると、横向きモードを保存するボタンをクリックすると、静止画像が上下逆になります。

ここに画像の説明を入力

コード：

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

    [self setCaptureSession:[[AVCaptureSession alloc] init]];


    [self  addVideoInputFrontCamera:NO]; // set to YES for Front Camera, No for Back camera

    [self  addStillImageOutput];

    [self setPreviewLayer:[[AVCaptureVideoPreviewLayer alloc] initWithSession:[self captureSession]] ];

      [[self previewLayer] setVideoGravity:AVLayerVideoGravityResizeAspectFill];

      CGRect layerRect = [[[self view] layer] bounds];


    [[self previewLayer]setBounds:layerRect];
    [[self  previewLayer] setPosition:CGPointMake(CGRectGetMidX(layerRect),CGRectGetMidY(layerRect))];
    [[[self view] layer] addSublayer:[self  previewLayer]];

     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(saveImageToPhotoAlbum) name:kImageCapturedSuccessfully object:nil];


    [[self captureSession] startRunning];

camera=[UIButton buttonWithType:UIButtonTypeCustom];
[camera setImage:[UIImage imageNamed:@"button.png"] forState:UIControlStateNormal];
[camera setFrame:CGRectMake(150, 10, 40, 30)];
[camera addTarget:self action:@selector(takephoto:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:camera];

}

写真を撮るためのボタン:

-(void)takephoto:(id)sender{

[self captureStillImage];

}

- (void)captureStillImage
{
    AVCaptureConnection *videoConnection = nil;
    for (AVCaptureConnection *connection in [[self stillImageOutput] connections]) {
        for (AVCaptureInputPort *port in [connection inputPorts]) {
            if ([[port mediaType] isEqual:AVMediaTypeVideo]) {
                videoConnection = connection;
                break;
            }
        }
        if (videoConnection) {
            break;
        }
    }

    NSLog(@"about to request a capture from: %@", [self stillImageOutput]);

    [[self stillImageOutput] captureStillImageAsynchronouslyFromConnection:videoConnection
                                                         completionHandler:^(CMSampleBufferRef imageSampleBuffer, NSError *error) {
                                                             CFDictionaryRef exifAttachments = CMGetAttachment(imageSampleBuffer, kCGImagePropertyExifDictionary, NULL);
                                                             if (exifAttachments) {
                                                                 NSLog(@"attachements: %@", exifAttachments);
                                                             } else {
                                                                 NSLog(@"no attachments");
                                                             }

                                                             NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer];
                                                             UIImage *image = [[UIImage alloc] initWithData:imageData];


                                                            [self setStillImage:image];



                                                             //  [image release];
                                                             [[NSNotificationCenter defaultCenter] postNotificationName:kImageCapturedSuccessfully object:nil];

                                                         }];


}
4

1 に答える 1

6

デバイスの向きに基づいて、videoConnection の videoOrientation プロパティを設定する必要があります。captureStillImageAVCaptureConnection を設定した後、 でこれを行います。

    UIDeviceOrientation deviceOrientation = 
                    [[UIDevice currentDevice] orientation];
    AVCaptureVideoOrientation avcaptureOrientation;
    if ( deviceOrientation == UIDeviceOrientationLandscapeLeft )
            avcaptureOrientation  = AVCaptureVideoOrientationLandscapeRight;

    else if ( deviceOrientation == UIDeviceOrientationLandscapeRight )
            avcaptureOrientation  = AVCaptureVideoOrientationLandscapeLeft;

    [videoConnection setVideoOrientation:avcaptureOrientation];
于 2013-07-30T08:52:24.350 に答える