图片裁剪，摄像后图片旋转

最新推荐文章于 2019-03-05 09:25:52 发布

Gaos的BLOG

最新推荐文章于 2019-03-05 09:25:52 发布

阅读量754

点赞数

CC 4.0 BY-SA版权

分类专栏： --------UIImage 文章标签： uiimage

共享

本文链接：https://blog.youkuaiyun.com/u010742414/article/details/50470859

--------UIImage 专栏收录该内容

5 篇文章

订阅专栏

获取到图片后反转

//压缩图片  
- (UIImage *)image:(UIImage*)image scaledToSize:(CGSize)newSize  
{  
    // Create a graphics image context  
    UIGraphicsBeginImageContext(newSize);  
    // Tell the old image to draw in this new context, with the desired  
    // new size  
    [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];  
    // Get the new image from the context  
    UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();  
    // End the context  
    UIGraphicsEndImageContext();  
    // Return the new image.  
    return newImage;  
}

方法2

//裁剪图片  
- (UIImage *)cutImage:(UIImage*)image  
{  
    //压缩图片  
    CGSize newSize;  
    CGImageRef imageRef = nil;  

    if ((image.size.width / image.size.height) < (_headerView.bgImgView.size.width / _headerView.bgImgView.size.height)) {  
        newSize.width = image.size.width;  
        newSize.height = image.size.width * _headerView.bgImgView.size.height / _headerView.bgImgView.size.width;  

        imageRef = CGImageCreateWithImageInRect([image CGImage], CGRectMake(0, fabs(image.size.height - newSize.height) / 2, newSize.width, newSize.height));  

    } else {  
        newSize.height = image.size.height;  
        newSize.width = image.size.height * _headerView.bgImgView.size.width / _headerView.bgImgView.size.height;  

        imageRef = CGImageCreateWithImageInRect([image CGImage], CGRectMake(fabs(image.size.width - newSize.width) / 2, 0, newSize.width, newSize.height));  

    }  

    return [UIImage imageWithCGImage:imageRef];  
}