Read Exif tag of JPG using ExifInterface(InputStream)

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Last post show how to open image of jpeg using Intent.ACTION_OPEN_DOCUMENT (added in API level 19), then display the image and read the Exif tag using ExifInterface (FileDescriptor)(added in API level 24). Here is another alternative using ExifInterface(InputStream) (added in API level 24) to read Exif.

Simple modify the method showExif(Uri photoUri). All other follow the last example. It have the same result:



    void showExif(Uri photoUri){
        if(photoUri != null){

            /*
            How to convert the Uri to InputStream, refer to the example in the document:
            https://developer.android.com/guide/topics/providers/document-provider.html
             */

            try {
                InputStream inputStream = getContentResolver().openInputStream(photoUri);

                /*
                ExifInterface (InputStream inputStream) added in API level 24
                 */
                ExifInterface exifInterface = new ExifInterface(inputStream);

                String exif="Exif: ";
                exif += "\nIMAGE_LENGTH: " +
                        exifInterface.getAttribute(ExifInterface.TAG_IMAGE_LENGTH);
                exif += "\nIMAGE_WIDTH: " +
                        exifInterface.getAttribute(ExifInterface.TAG_IMAGE_WIDTH);
                exif += "\n DATETIME: " +
                        exifInterface.getAttribute(ExifInterface.TAG_DATETIME);
                exif += "\n TAG_MAKE: " +
                        exifInterface.getAttribute(ExifInterface.TAG_MAKE);
                exif += "\n TAG_MODEL: " +
                        exifInterface.getAttribute(ExifInterface.TAG_MODEL);
                exif += "\n TAG_ORIENTATION: " +
                        exifInterface.getAttribute(ExifInterface.TAG_ORIENTATION);
                exif += "\n TAG_WHITE_BALANCE: " +
                        exifInterface.getAttribute(ExifInterface.TAG_WHITE_BALANCE);
                exif += "\n TAG_FOCAL_LENGTH: " +
                        exifInterface.getAttribute(ExifInterface.TAG_FOCAL_LENGTH);
                exif += "\n TAG_FLASH: " +
                        exifInterface.getAttribute(ExifInterface.TAG_FLASH);
                exif += "\nGPS related:";
                exif += "\n TAG_GPS_DATESTAMP: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_DATESTAMP);
                exif += "\n TAG_GPS_TIMESTAMP: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_TIMESTAMP);
                exif += "\n TAG_GPS_LATITUDE: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_LATITUDE);
                exif += "\n TAG_GPS_LATITUDE_REF: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_LATITUDE_REF);
                exif += "\n TAG_GPS_LONGITUDE: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_LONGITUDE);
                exif += "\n TAG_GPS_LONGITUDE_REF: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_LONGITUDE_REF);
                exif += "\n TAG_GPS_PROCESSING_METHOD: " +
                        exifInterface.getAttribute(ExifInterface.TAG_GPS_PROCESSING_METHOD);

                inputStream.close();

                Toast.makeText(getApplicationContext(),
                        exif,
                        Toast.LENGTH_LONG).show();


            } catch (FileNotFoundException e) {
                e.printStackTrace();
                Toast.makeText(getApplicationContext(),
                        "Something wrong:\n" + e.toString(),
                        Toast.LENGTH_LONG).show();
            } catch (IOException e) {
                e.printStackTrace();
                Toast.makeText(getApplicationContext(),
                        "Something wrong:\n" + e.toString(),
                        Toast.LENGTH_LONG).show();
            }

        }else{
            Toast.makeText(getApplicationContext(),
                    "photoUri == null",
                    Toast.LENGTH_LONG).show();
        }
    };


Next:
- Read Exif tag of JPG using ExifInterface(String filename)

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