Convert Base64 String to Bitmap in Android problem

Question

I use a Base64 String to save my image and want to convert it to a Bitmap in Android. The Problem is that the Image View is black in the lower area. I also tried it with another images, but I am facing the same problem there.

My Code:

byte[] decodedString = Base64.decode(rezept.getBildtxt(), Base64.DEFAULT);
    Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
    rezeptImage.setImageBitmap(decodedByte);

Thats how it looks like:

Any Ideas ?

Are you sure, the image data is not getting clipped before it's getting base64 encoded? i.e. the data you are decoding is already corrupted? I'll suggest, if your program is reading the image, break into the code when you read the image, copy the contents and save them manually into a file. Try to open that file in some image viewer. You should also verify when you convert image data to base64 (encode), the output is valid - you can compare your base64 encoded output with some third party tool's output of encoding the image data (e.g. Notepad++) — N0000B
– N0000B, Commented Dec 3, 2018 at 21:43

julienduchow · Accepted Answer · 2018-12-03 21:39:20Z

2

I also use such a code to convert a Base64 String to an Bitmap. I am pretty sure your Base64 String is just wrong or to short.

answered Dec 3, 2018 at 21:39

julienduchow

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1 Comment

SchelmEntwicklerJustin Over a year ago

Yes i found the Bug the base64 was just too short.

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