Merge pull request #162 from rgmf/issue#89

Share pictures from marker.

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

@@ -60,6 +60,8 @@ public class MarkerDetailFragment extends Fragment {
 
     private static final long HIDE_TEXT_DELAY = 4 * UnitConversions.ONE_SECOND_MS;
 
+    private MenuItem shareMarkerImageMenuItem;
+
     private ContentProviderUtils contentProviderUtils;
     private Handler handler;
     private ImageView photoView;
@@ -145,6 +147,7 @@ public class MarkerDetailFragment extends Fragment {
         // Need to update the waypoint in case returning after an edit
         updateWaypoint(true);
         updateUi();
+        updateMenuItems();
     }
 
     @Override
@@ -170,8 +173,14 @@ public class MarkerDetailFragment extends Fragment {
     @Override
     public void onCreateOptionsMenu(@NonNull Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.marker_detail, menu);
-
+        shareMarkerImageMenuItem = menu.findItem(R.id.marker_detail_share);
         updateWaypoint(false);
+        updateMenuItems();
+    }
+
+    private void updateMenuItems() {
+        if (shareMarkerImageMenuItem != null)
+            shareMarkerImageMenuItem.setVisible(waypoint.hasPhoto());
     }
 
     @Override
@@ -188,6 +197,13 @@ public class MarkerDetailFragment extends Fragment {
                         .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerId);
                 startActivity(intent);
                 return true;
+            case R.id.marker_detail_share:
+                if (waypoint.hasPhoto()) {
+                    intent = IntentUtils.newShareImageIntent(getContext(), waypoint.getPhotoURI());
+                    intent = Intent.createChooser(intent, null);
+                    startActivity(intent);
+                }
+                return true;
             case R.id.marker_detail_delete:
                 DeleteMarkerDialogFragment.showDialog(getChildFragmentManager(), new long[]{markerId});
                 return true;

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

@@ -107,6 +107,30 @@ public class IntentUtils {
                 .putExtra(Intent.EXTRA_TEXT, context.getString(R.string.share_track_share_file_body, trackDescription));
     }
 
+    /**
+     * Creates an intent to share a waypoint image with an app.
+     *
+     * @param context the context.
+     * @param uri     uri with the image to share.
+     */
+    public static Intent newShareImageIntent(Context context, Uri uri) {
+        String mime = context.getContentResolver().getType(uri);
+
+        /*
+         * Because the #166 bug, when you import KMZ tracks then it creates file:/// from markers with photo.
+         * The photos should be content:/// not file:/// because getType(uri) always returns null for file:///
+         * In .setType, to avoid side effects because the #166 bug described above it checks if mime is null.
+         * If it is then it hardcode "images/*".
+         */
+        return new Intent(Intent.ACTION_SEND)
+                .setType(mime != null ? mime : "image/*")
+                .setAction(Intent.ACTION_SEND)
+                .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+                .putExtra(Intent.EXTRA_STREAM, uri)
+                .putExtra(Intent.EXTRA_SUBJECT, context.getString(R.string.share_image_subject))
+                .putExtra(Intent.EXTRA_TEXT, context.getString(R.string.share_image_body));
+    }
+
     public static void showCoordinateOnMap(Context context, Waypoint waypoint) {
         showCoordinateOnMap(context, waypoint.getLocation().getLatitude(), waypoint.getLocation().getLongitude(), waypoint.getName());
     }