While importing photos, check url carefully.

(cherry picked from commit 309c96e4789bd7623b84720a8c8f2bf297c95d59)

src/main/java/de/dennisguse/opentracks/io/file/importer/AbstractFileTrackImporter.java

@@ -366,15 +366,32 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
     /**
      * Gets the photo url for a file.
      *
-     * @param fileName the file name
+     * @param externalPhotoUrl the file name
      */
-    protected String getPhotoUrl(String fileName) {
+    protected String getInternalPhotoUrl(String externalPhotoUrl) {
         if (importTrackId == -1L) {
+            Log.e(TAG, "Track id is invalid.");
+            return null;
+        }
+
+        if (externalPhotoUrl == null) {
+            Log.i(TAG, "External photo url is null.");
+            return null;
+        }
+
+        Uri externalPhotoUri = Uri.parse(externalPhotoUrl);
+        if (externalPhotoUri == null) {
+            Log.w(TAG, "Could not parse external photo url.");
+            return null;
+        }
+        String filename = externalPhotoUri.getLastPathSegment();
+        if (filename == null) {
+            Log.w(TAG, "External photo contains no filename.");
             return null;
         }
 
         File dir = FileUtils.getPhotoDir(context, importTrackId);
-        File file = new File(dir, fileName);
+        File file = new File(dir, externalPhotoUrl);
 
         Uri photoUri = FileUtils.getUriForFile(context, file);
 

src/main/java/de/dennisguse/opentracks/io/file/importer/KmlFileTrackImporter.java

@@ -17,7 +17,6 @@
 package de.dennisguse.opentracks.io.file.importer;
 
 import android.content.Context;
-import android.net.Uri;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
@@ -187,9 +186,7 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
         }
 
         // If there is photoUrl it has to be changed because that url in kml file is a relative path to the internal kmz file.
-        if (photoUrl != null) {
-            photoUrl = getPhotoUrl(Uri.parse(photoUrl).getLastPathSegment());
-        }
+        photoUrl = getInternalPhotoUrl(photoUrl);
 
         addWaypoint();
     }