Question

每次我使用相机拍照时，保存图片始终都是横向拍摄。这意味着我的Xib中的UIImageView是错误的。它的肖像 - 这是我想要和期望的。我可以通过将图像旋转90度来纠正这个问题，但即使这样我也无法禁用动画，该动画显示原始风景照片，然后是动画旋转本身。如何确保来自相机的UIImageView在保存时实际上处于纵向模式而不是横向模式，如何在CGAffineTranformationMakeRotation期间禁用动画？

Answer 1

我发现这篇文章非常有用，它描述了在保存之前为UIImage添加一个类别来旋转图像：

http://www.platinumball.net/blog/2009/03/30/iphone-uiimage-rotation-and-mirroring/

然后一旦实施了类别，你就会做这样的事情：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{
    UIImage *originalImage, *editedImage, *rotatedImage;

    editedImage = (UIImage *)[info objectForKey:UIImagePickerControllerEditedImage];
    originalImage = (UIImage *)[info objectForKey:UIImagePickerControllerOriginalImage];

    if (editedImage) 
    {
        rotatedImage = [editedImage rotate:UIImageOrientationRight];
    } 
    else 
    {
        rotatedImage = [originalImage rotate:UIImageOrientationRight];
    }

    NSString *f = @"/set/this/to/your/file/name"; 
    [UIImagePNGRepresentation(rotatedImage) writeToFile:f atomically:YES];

    [[picker parentViewController] dismissModalViewControllerAnimated:YES];
    [picker release];
}

UIImagePNGRepresentation ..... writeToFile总是风景

1 个答案: