使用ZXingObjC选取相册里的照片进行扫码时注意

_imagePickerController.allowsEditing = YES; ? ?//一定要选择允许编辑

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UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage”]; ? //image一定要取选择框范围内的图片

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info == {

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? ? UIImagePickerControllerCropRect = "NSRect: {{0, 0}, {2272, 1704}}";

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? ? UIImagePickerControllerEditedImage = "<UIImage: 0x16e3d150> size {640, 480} orientation 0 scale 1.000000";

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? ? UIImagePickerControllerMediaType = "public.image";

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? ? UIImagePickerControllerOriginalImage = "<UIImage: 0x16e263f0> size {2272, 1704} orientation 0 scale 1.000000";

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? ? UIImagePickerControllerReferenceURL = "assets-library://asset/asset.JPG?id=E9FB04A9-2E0E-407B-9B87-FEBBF4F27A12&ext=JPG";

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}