imagePickerController：didFinishPickingMediaWithInfo 问题
如果我不编辑图片，结果会怎样？
(image = nil ? or image = OriginalImage)
picker.allowsImageEditing = YES;
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
}
What is the result if I didn't edit the picture?
(image = nil ? or image = OriginalImage)
picker.allowsImageEditing = YES;
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];
}
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该键要么不存在于字典中，要么与原始图像相同。最简单的方法就是进行防御性编码：
这样，即使不同版本的 iOS 上的行为有所不同，您仍然可以获得合理的结果。
Either the key would not exist in the dictionary or it would be the same as the original image. The easiest thing to do is just to code defensively:
That way you'll still get sane results even if the behavior is different on different versions of iOS.