imagePickerController：didFinishPickingMediaWithInfo问题

Question

如果我不编辑图片会得到什么结果？

(image = nil ? or image = OriginalImage) 

picker.allowsImageEditing = YES;

- (void)imagePickerController:(UIImagePickerController *)picker 
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
}

Answer 1

字典中不存在密钥，或者它与原始图像相同。最简单的做法就是防御性地编码：

UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
if (!image) image = [info objectForKey:UIImagePickerControllerOriginalImage];

这样，即使不同版本的iOS上的行为不同，您仍然会得到理智的结果。