ios - 扫描二维码，调用摄像头，横屏拍到的画面会有90度的旋转

Question

这是正对着键盘拍的，画面翻转了90°，怎样可以想竖屏时正常显示？

Answer 1

You can take a look at the documentation about UIImage imageOrientation property. There are also many codes for correcting orientation on the Internet.

Answer 2

Like this

UIImage* image=[info objectForKey:UIImagePickerControllerOriginalImage];  
        UIImageOrientation imageOrientation=image.imageOrientation;  
        if(imageOrientation!=UIImageOrientationUp)  
        {  
            // 原始图片可以根据照相时的角度来显示，但UIImage无法判定，于是出现获取的图片会向左转９０度的现象。  
            // 以下为调整图片角度的部分  
            UIGraphicsBeginImageContext(image.size);  
            [image drawInRect:CGRectMake(0, 0, image.size.width, image.size.height)];  
            image = UIGraphicsGetImageFromCurrentImageContext();  
            UIGraphicsEndImageContext();  
            // 调整图片角度完毕  
        } 

Answer 3

Owner, has this problem been solved? ? ? Looking for answers