Catch ActivityNotFound exception for starting geo-data intents.

src/main/java/de/dennisguse/opentracks/MarkerListActivity.java

@@ -42,7 +42,6 @@ import androidx.loader.content.Loader;
 
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.Track;
-import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointsColumns;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
@@ -284,9 +283,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
                 if (markerIds.length == 1) {
-                    Waypoint marker = contentProviderUtils.getWaypoint(markerIds[0]);
-                    intent = IntentUtils.newShowCoordinateOnMapIntent(marker);
-                    startActivity(intent);
+                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(markerIds[0]));
                 }
                 return true;
             case R.id.list_context_menu_edit:

src/main/java/de/dennisguse/opentracks/SearchListActivity.java

@@ -316,8 +316,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                 Log.e(TAG, "Not implemented");
                 return true;
             case R.id.list_context_menu_show_on_map:
-                intent = IntentUtils.newShowCoordinateOnMapIntent((double) item.get(MARKER_LATITUDE_FIELD), (double) item.get(MARKER_LONGITUDE_FIELD), item.get(NAME_FIELD) + "");
-                startActivity(intent);
+                IntentUtils.showCoordinateOnMap(this, (double) item.get(MARKER_LATITUDE_FIELD), (double) item.get(MARKER_LONGITUDE_FIELD), item.get(NAME_FIELD) + "");
                 return true;
             case R.id.list_context_menu_edit:
                 if (markerId != null) {

src/main/java/de/dennisguse/opentracks/fragments/MarkerDetailFragment.java

@@ -190,8 +190,7 @@ public class MarkerDetailFragment extends Fragment {
         Intent intent;
         switch (item.getItemId()) {
             case R.id.marker_detail_show_on_map:
-                intent = IntentUtils.newShowCoordinateOnMapIntent(waypoint);
-                startActivity(intent);
+                IntentUtils.showCoordinateOnMap(getContext(), waypoint);
                 return true;
             case R.id.marker_detail_edit:
                 intent = IntentUtils.newIntent(fragmentActivity, MarkerEditActivity.class)

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

@@ -64,10 +64,6 @@ public class IntentUtils {
 
     private static final String JPEG_EXTENSION = "jpeg";
 
-    public static Intent newShowCoordinateOnMapIntent(Waypoint waypoint) {
-        return newShowCoordinateOnMapIntent(waypoint.getLocation().getLatitude(), waypoint.getLocation().getLongitude(), waypoint.getName());
-    }
-
     /**
      * Creates an intent to share a track file with an app.
      *
@@ -90,7 +86,11 @@ public class IntentUtils {
                 .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
     }
 
-    public static Intent newShowCoordinateOnMapIntent(double latitude, double longitude, String label) {
+    public static void showCoordinateOnMap(Context context, Waypoint waypoint) {
+        showCoordinateOnMap(context, waypoint.getLocation().getLatitude(), waypoint.getLocation().getLongitude(), waypoint.getName());
+    }
+
+    public static void showCoordinateOnMap(Context context, double latitude, double longitude, String label) {
         //SEE https://developer.android.com/guide/components/intents-common.html#Maps
         String uri = "geo:0,0?q=" + latitude + "," + longitude;
         if (label != null && label.length() > 0) {
@@ -98,7 +98,12 @@ public class IntentUtils {
         }
         Intent intent = new Intent(Intent.ACTION_VIEW);
         intent.setData(Uri.parse(uri));
-        return intent;
+
+        try {
+            context.startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            Toast.makeText(context, context.getString(R.string.app_not_installed_show_on_map), Toast.LENGTH_SHORT).show();
+        }
     }
 
     /**
@@ -120,7 +125,7 @@ public class IntentUtils {
         try {
             context.startActivity(intent);
         } catch (ActivityNotFoundException e) {
-            Toast.makeText(context, "No app installed that can show the tracks on a map.", Toast.LENGTH_SHORT).show();
+            Toast.makeText(context, context.getString(R.string.app_not_installed_show_on_map), Toast.LENGTH_SHORT).show();
         }
     }
 

src/main/res/values/strings.xml

@@ -304,7 +304,11 @@ limitations under the License.
     wind surfing
   </string>
 
-    <!-- Description -->
+  <string name="app_not_installed_show_on_map" translation_description="When 'show on map' is used and no app with this functionality is installed.">
+      Please install an app that supports presenting map data.
+    </string>
+
+  <!-- Description -->
     <string name="description_activity_type" translation_description="Activity type description.
 
       %1$s activity type. E.g., 'hiking'.">
@@ -985,6 +989,7 @@ limitations under the License.
       what will be searched for.">
     Speak the name of a track or marker
   </string>
+
     <!-- Sensor State -->
     <string name="sensor_state_battery" translation_description="In the 'Sensor state' page, the label for the battery level on the bike
       sensor. E.g., 'Battery level: 50 %'.">