Comments (4)
fulldecent
commented on August 29, 2024
Could you please do this for a small image and then post the Base64 you are getting.
from fdtake.
DV-Anh
commented on August 29, 2024
Sorry for the delay in response. I decided to use a different encoding method which yields desired result with UIImage that taken directly with imageNamed
[[NSString alloc] initWithUTF8String:[[UIImagePNGRepresentation(image)base64EncodedDataWithOptions:NSDataBase64Encoding64CharacterLineLength] bytes]];
I used a 30x40 jpeg and these are the results
Direct UIImage: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UIImage fetched from FDTake: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FtQ8P6r/AMIv/Zug+JNF/szxl8SPD51j/kYP7Y/5jH/CGH9M9sfxV+V8e/7qvn/6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These are valid for decoding with both Java and C# even though they are different. However I right now have no means of confirming the resultant images ended up on server (ASP .NET).
I'm not sure with jpg images since I got undesired results using them. Would large image and image format be the causes for this?
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fulldecent
commented on August 29, 2024
Thanks for sending this. I am also using this same technique to get user images, encode them and send to a server.
Is anyone else here seeing this type of error too?
from fdtake.
DV-Anh
commented on August 29, 2024
I have decided to use another syntax
[NSString stringWithUTF8String:[[UIImagePNGRepresentation(image) base64EncodedDataWithOptions:NSDataBase64Encoding64CharacterLineLength] bytes];The resultant strings still sometimes differ, sometimes don't. Though all results are decodable with Java and C#, and the images are seemingly identical. I guess my problem has been solved since there are no error or meaningful alteration in data encoded and decoded. Should this issue be closed?
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