imageCaptureProcessing maintain EXIF

app/src/org/commcare/activities/components/ImageCaptureProcessing.java

@@ -56,7 +56,8 @@ private static Pair<File, String> moveAndScaleImage(File originalImage, boolean
             if (currentWidget != null) {
                 int maxDimen = currentWidget.getMaxDimen();
                 if (maxDimen != -1) {
-                    savedScaledImage = FileUtil.scaleAndSaveImage(originalImage, tempFilePathForScaledImage, maxDimen);
+                    File tempFile = new File(tempFilePathForScaledImage);
+                    savedScaledImage = FileUtil.scaleAndSaveImageWithExif(originalImage, tempFile, maxDimen);
                 }
             }
         }
@@ -92,7 +93,7 @@ private static File makeRawCopy(File originalImage, String instanceFolder, Strin
         }
         File rawImageFile = new File(rawDirPath + "/" + imageFilename);
         try {
-            FileUtil.copyFile(originalImage, rawImageFile);
+            FileUtil.copyFileWithExifData(originalImage, rawImageFile);
         } catch (Exception e) {
             throw new IOException("Failed to rename " + originalImage.getAbsolutePath() +
                     " to " + rawImageFile.getAbsolutePath());

app/src/org/commcare/utils/FileUtil.java

@@ -7,6 +7,7 @@
 import android.content.Intent;
 import android.database.Cursor;
 import android.graphics.Bitmap;
+import android.media.ExifInterface;
 import android.media.MediaMetadataRetriever;
 import android.net.Uri;
 import android.os.Build;
@@ -397,7 +398,6 @@ public static void ensureFilePathExists(File f) {
      * if we are on KitKat we need use the new API to find the mounted roots, then append our application
      * specific path that we're allowed to write to
      */
-    @SuppressLint("NewApi")
     private static String getExternalDirectoryKitKat(Context c) {
         File[] extMounts = c.getExternalFilesDirs(null);
         // first entry is emualted storage. Second if it exists is secondary (real) SD.
@@ -494,8 +494,9 @@ public static String getMd5Hash(File file) {
 
             BigInteger number = new BigInteger(1, messageDigest);
             String md5 = number.toString(16);
-            while (md5.length() < 32)
+            while (md5.length() < 32) {
                 md5 = "0" + md5;
+            }
             is.close();
             return md5;
 
@@ -612,7 +613,8 @@ public static boolean scaleAndSaveImage(File originalImage, String finalFilePath
         Pair<Bitmap, Boolean> bitmapAndScaledBool = MediaUtil.inflateImageSafe(originalImage.getAbsolutePath());
         if (bitmapAndScaledBool.second) {
             Logger.log(LogTypes.TYPE_FORM_ENTRY,
-                    "An image captured during form entry was too large to be processed at its original size, and had to be downsized");
+                    "An image captured during form entry was too large to be processed at its original size, " +
+                    "and had to be downsized");
         }
         Bitmap scaledBitmap = getBitmapScaledByMaxDimen(bitmapAndScaledBool.first, maxDimen);
         if (scaledBitmap != null) {
@@ -723,7 +725,9 @@ public static Uri getUriForExternalFile(Context context, File file) {
      * @param dstFile     destination File where we need to copy the inputStream
      */
     public static void copyFile(InputStream inputStream, File dstFile) throws IOException {
-        if (inputStream == null) return;
+        if (inputStream == null) {
+            return;
+        }
         OutputStream outputStream = new FileOutputStream(dstFile);
         StreamsUtil.writeFromInputToOutputUnmanaged(inputStream, outputStream);
         inputStream.close();
@@ -844,8 +848,13 @@ public static void addMediaToGallery(Context context, File file) throws
     }
 
     /**
-     * Returns true only when we're certain that the file size is too large.
-     * <p> https://developer.android.com/training/secure-file-sharing/retrieve-info.html#RetrieveFileInfo
+     * Checks if a file referenced by a content URI exceeds the maximum allowed upload size
+     * <p>
+     * @param contentResolver ContentResolver to query the file size
+     * @param uri Content URI of the file to check
+     * @return true if the file size exceeds FormUploadUtil.MAX_BYTES, false otherwise or if size cannot be determined
+     * @see FormUploadUtil#MAX_BYTES
+     * @see <a href="https://developer.android.com/training/secure-file-sharing/retrieve-info.html#RetrieveFileInfo">Android docs</a>
      */
     public static boolean isFileTooLargeToUpload(ContentResolver contentResolver, Uri uri) {
         try (Cursor returnCursor = contentResolver.query(uri, null, null, null, null)) {
@@ -857,4 +866,74 @@ public static boolean isFileTooLargeToUpload(ContentResolver contentResolver, Ur
             return returnCursor.getLong(sizeIndex) > FormUploadUtil.MAX_BYTES;
         }
     }
+
+    public static void copyFileWithExifData(File sourceFile, File destFile) throws IOException {
+        // First copy the file normally
+        copyFile(sourceFile, destFile);
+
+        // Only try to copy EXIF data for image files
+        String mimeType = getMimeType(sourceFile.getAbsolutePath());
+        if (mimeType != null && mimeType.startsWith("image/")) {
+            copyExifData(sourceFile.getAbsolutePath(), destFile.getAbsolutePath());
+        }
+    }
+
+    private static void copyExifData(String sourcePath, String destPath) throws IOException {
+        try {
+            ExifInterface source = new ExifInterface(sourcePath);
+            ExifInterface dest = new ExifInterface(destPath);
+
+            String[] tagsToPreserve = {
+                // GPS data
+                ExifInterface.TAG_GPS_LATITUDE,
+                ExifInterface.TAG_GPS_LATITUDE_REF,
+                ExifInterface.TAG_GPS_LONGITUDE,
+                ExifInterface.TAG_GPS_LONGITUDE_REF,
+                ExifInterface.TAG_GPS_TIMESTAMP,
+                ExifInterface.TAG_GPS_DATESTAMP,
+                ExifInterface.TAG_GPS_ALTITUDE,
+                ExifInterface.TAG_GPS_ALTITUDE_REF,
+                ExifInterface.TAG_GPS_AREA_INFORMATION,
+
+                // Timestamp data
+                ExifInterface.TAG_DATETIME,
+                ExifInterface.TAG_DATETIME_DIGITIZED,
+                ExifInterface.TAG_DATETIME_ORIGINAL,
+                ExifInterface.TAG_OFFSET_TIME,
+                ExifInterface.TAG_OFFSET_TIME_ORIGINAL,
+                ExifInterface.TAG_OFFSET_TIME_DIGITIZED,
+
+                // Image metadata
+                ExifInterface.TAG_COPYRIGHT,
+                ExifInterface.TAG_IMAGE_DESCRIPTION,
+                ExifInterface.TAG_EXIF_VERSION,
+                ExifInterface.TAG_ORIENTATION
+            };
+
+            for (String tag : tagsToPreserve) {
+                String value = source.getAttribute(tag);
+                if (value != null) {
+                    dest.setAttribute(tag, value);
+                }
+            }
+
+            dest.saveAttributes();
+        } catch (IOException e) {
+            // Log but don't fail if EXIF copying fails
+            Logger.log(LogTypes.TYPE_WARNING_NETWORK, 
+                "Failed to copy EXIF data from " + sourcePath + " to " + destPath + ": " + e.getMessage());
+        }
+    }
+
+    public static boolean scaleAndSaveImageWithExif(File sourceFile, File destFile, int maxDimen) throws IOException {
+        // First scale the image
+        boolean scaled = scaleAndSaveImage(sourceFile, destFile.getAbsolutePath(), maxDimen);
+
+        if (scaled) {
+            // Copy EXIF data from source to scaled image
+            copyExifData(sourceFile.getAbsolutePath(), destFile.getAbsolutePath());
+        }
+
+        return scaled;
+    }
 }