MarkerDetailFragment now shows the blue pin as default image.

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

@@ -0,0 +1,20 @@
+package de.dennisguse.opentracks.util;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+
+import androidx.annotation.NonNull;
+
+import de.dennisguse.opentracks.R;
+
+public class MarkerUtils {
+
+    public static final int ICON_ID = R.drawable.ic_marker_blue_pushpin;
+
+    private MarkerUtils() {
+    }
+
+    public static Drawable getDefaultPhoto(@NonNull Context context) {
+        return context.getResources().getDrawable(ICON_ID);
+    }
+}