Raw image not detected ExifInterface

Question

I save image from custom camera:

public String getFilename() { File file = new File(Environment.getExternalStorageDirectory().getPath(), "Products/Images"); if (!file.exists()) { file.mkdirs(); } String uriSting = (file.getAbsolutePath() + "/" + System.currentTimeMillis() + ".jpg"); return uriSting; }

Now:

public String saveImage(Bitmap bitmap) { FileOutputStream out = null; String filename = getFilename(); try { out = new FileOutputStream(filename); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out); } catch (FileNotFoundException e) { Log.e("Error",e.toString()); e.printStackTrace(); return ""; } return filename; }

I use this filename in exifInterface after saving image

exif = new ExifInterface(filePath);

But every time it shows in my log Raw image not detected, Exif: 0

file.mkdirs(); Adapt your code. Check the return value of mkdirs an stop if false. Return null. Stop and display a toast to inform the user. — blackapps
– blackapps, Commented Nov 16, 2020 at 8:46

blackapps · Accepted Answer · 2020-11-16 08:50:25Z

1

You compress a bitmap to a jpg file.

Bitmaps dont contain exif information.

And compressing a bitmap to a jpg file does not add an exif header to the file.

answered Nov 16, 2020 at 8:50

blackapps

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6 Comments

aryanknp Over a year ago

can you tell me other way to get the image because I use this when I capture BitmapFactory.decodeByteArray(data, 0, data.length); , this will give a bitmap , how can I get something which contains exif information

aryanknp Over a year ago

FileOutputStream , seems to be the choice then

blackapps Over a year ago

???? You constructed your bitmap from 'data'. So what exactly was in data?

aryanknp Over a year ago

I will accept your answer once my query is resolved thanks a lot !

blackapps Over a year ago

You accepted the wrong answer. Well.. not that it was wrong...

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blackapps · Accepted Answer · 2020-11-16 10:22:27Z

BitmapFactory.decodeByteArray(data, 0, data.length);

You have a nice byte array called data.

This byte array contains the bytes of a jpg file with exif header.

If you wanna save the data to file then do not make an intermediate bitmap first as at that moment you lost the exif header.

Instead save the bytes in your data array directly to file.

Then you will have a jpg file with an exif header.

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