(android) float variant of latitude/longitude exif data on android

ivpusic · May 4, 2021 · 9d86ade · 9d86ade
1 parent e311caa
commit 9d86ade
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Showing 4 changed files with 74 additions and 1 deletion.
diff --git a/android/src/main/java/com/reactnative/ivpusic/imagepicker/ExifExtractor.java b/android/src/main/java/com/reactnative/ivpusic/imagepicker/ExifExtractor.java
@@ -26,6 +26,12 @@ static WritableMap extract(String path) throws IOException {
 
         ExifInterface exif = new ExifInterface(path);
 
+        GeoDegree geoDegree = new GeoDegree(exif);
+        if (geoDegree.getLatitude() != null && geoDegree.getLongitude() != null) {
+            exifData.putDouble("Latitude", geoDegree.getLatitude());
+            exifData.putDouble("Longitude", geoDegree.getLongitude());
+        }
+
         for (String attribute : attributes) {
             String value = exif.getAttribute(attribute);
             exifData.putString(attribute, value);

diff --git a/android/src/main/java/com/reactnative/ivpusic/imagepicker/GeoDegree.java b/android/src/main/java/com/reactnative/ivpusic/imagepicker/GeoDegree.java
@@ -0,0 +1,65 @@
+package com.reactnative.ivpusic.imagepicker;
+
+import android.media.ExifInterface;
+
+public class GeoDegree {
+    Float latitude;
+    Float longitude;
+
+    public GeoDegree(ExifInterface exif) {
+        String attrLATITUDE = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE);
+        String attrLATITUDE_REF = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE_REF);
+        String attrLONGITUDE = exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE);
+        String attrLONGITUDE_REF = exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE_REF);
+
+        if ((attrLATITUDE != null)
+                && (attrLATITUDE_REF != null)
+                && (attrLONGITUDE != null)
+                && (attrLONGITUDE_REF != null)) {
+
+            if (attrLATITUDE_REF.equals("N")) {
+                latitude = convertToDegree(attrLATITUDE);
+            } else {
+                latitude = 0 - convertToDegree(attrLATITUDE);
+            }
+
+            if (attrLONGITUDE_REF.equals("E")) {
+                longitude = convertToDegree(attrLONGITUDE);
+            } else {
+                longitude = 0 - convertToDegree(attrLONGITUDE);
+            }
+        }
+    }
+
+    private Float convertToDegree(String stringDMS) {
+        Float result = null;
+        String[] DMS = stringDMS.split(",", 3);
+
+        String[] stringD = DMS[0].split("/", 2);
+        Double D0 = Double.valueOf(stringD[0]);
+        Double D1 = Double.valueOf(stringD[1]);
+        double FloatD = D0 / D1;
+
+        String[] stringM = DMS[1].split("/", 2);
+        Double M0 = Double.valueOf(stringM[0]);
+        Double M1 = Double.valueOf(stringM[1]);
+        double FloatM = M0 / M1;
+
+        String[] stringS = DMS[2].split("/", 2);
+        Double S0 = Double.valueOf(stringS[0]);
+        Double S1 = Double.valueOf(stringS[1]);
+        double FloatS = S0 / S1;
+
+        result = (float) (FloatD + (FloatM / 60) + (FloatS / 3600));
+
+        return result;
+    }
+
+    public Float getLatitude() {
+        return latitude;
+    }
+
+    public Float getLongitude() {
+        return longitude;
+    }
+}
diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
@@ -4,6 +4,8 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
     <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-feature android:name="android.hardware.location.gps" />
 
     <application
         android:name=".MainApplication"

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native-image-crop-picker",
-  "version": "0.36.0",
+  "version": "0.36.1",
   "description": "Select single or multiple images, with cropping option",
   "main": "index.js",
   "scripts": {