ContentProvider can now lookup tracks via UUID.

src/androidTest/java/de/dennisguse/opentracks/content/provider/CustomContentProviderUtilsTest.java

@@ -384,12 +384,29 @@ public class CustomContentProviderUtilsTest {
      * Tests the method {@link ContentProviderUtils#getTrack(long)}
      */
     @Test
-    public void testGetTrack() {
+    public void testGetTrack_by_id() {
+        // given
         long trackId = System.currentTimeMillis();
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
+
+        // when / then
         Assert.assertNotNull(contentProviderUtils.getTrack(trackId));
     }
 
+    /**
+     * Tests the method {@link ContentProviderUtils#getTrack(long)}
+     */
+    @Test
+    public void testGetTrack_by_uuid() {
+        // given
+        long trackId = System.currentTimeMillis();
+        Track track = TestDataUtil.createTrack(trackId);
+        contentProviderUtils.insertTrack(track);
+
+        // when / then
+        Assert.assertNotNull(contentProviderUtils.getTrack(track.getUuid()));
+    }
+
     /**
      * Tests the method {@link ContentProviderUtils#updateTrack(Track)}
      */

src/main/java/de/dennisguse/opentracks/content/data/TrackPointsColumns.java

@@ -33,7 +33,7 @@ public interface TrackPointsColumns extends BaseColumns {
     Uri CONTENT_URI_BY_TRACKID = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME + "/trackid");
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.trackpoint";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.trackpoint";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String TRACKID = "trackid";

src/main/java/de/dennisguse/opentracks/content/data/TracksColumns.java

@@ -32,7 +32,7 @@ public interface TracksColumns extends BaseColumns {
     Uri CONTENT_URI = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME);
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.track";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.track";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String UUID = "uuid";

src/main/java/de/dennisguse/opentracks/content/data/WaypointsColumns.java

@@ -33,7 +33,7 @@ public interface WaypointsColumns extends BaseColumns {
     Uri CONTENT_URI_BY_TRACKID = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME + "/trackid");
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.waypoint";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.waypoint";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String NAME = "name"; // waypoint name

src/main/java/de/dennisguse/opentracks/content/provider/ContentProviderUtils.java

@@ -24,12 +24,14 @@ import android.location.Location;
 import android.net.Uri;
 import android.text.TextUtils;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.UUID;
 
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.android.ContentResolverWrapper;
@@ -236,7 +238,20 @@ public class ContentProviderUtils {
         if (trackId < 0) {
             return null;
         }
-        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId)}, TracksColumns._ID)) {
+        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId)}, null)) {
+            if (cursor != null && cursor.moveToNext()) {
+                return createTrack(cursor);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @param trackUUID the track uuid.
+     */
+    public Track getTrack(@NonNull UUID trackUUID) {
+        String trackUUIDsearch = UUIDUtils.toHex(trackUUID);
+        try (Cursor cursor = getTrackCursor("hex(" + TracksColumns.UUID + ")=?", new String[]{trackUUIDsearch}, null)) {
             if (cursor != null && cursor.moveToNext()) {
                 return createTrack(cursor);
             }

src/main/java/de/dennisguse/opentracks/util/UUIDUtils.java

@@ -20,4 +20,19 @@ public class UUIDUtils {
         byteBuffer.putLong(uuid.getLeastSignificantBits());
         return byteBuffer.array();
     }
+
+    private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
+
+    public static String toHex(@NonNull UUID uuid) {
+        byte[] bytes = toBytes(uuid);
+
+        char[] hexChars = new char[bytes.length * 2];
+        for (int i = 0; i < bytes.length; i++) {
+            int v = bytes[i] & 0xFF;
+
+            hexChars[i * 2] = HEX_ARRAY[v >>> 4];
+            hexChars[i * 2 + 1] = HEX_ARRAY[v & 0x0F];
+        }
+        return new String(hexChars);
+    }
 }