Update ShareMenuModule.java (#98)

Author: scgough

android/src/main/java/com/meedan/ShareMenuModule.java

@@ -93,8 +93,21 @@ public void getSharedText(Callback successCallback) {
       return;
     }
 
-    Intent intent = currentActivity.getIntent();
+    //if this isn't the roor activity then make sure it is
+    if (!currentActivity.isTaskRoot()) {
+      Intent newIntent = new Intent(currentActivity.getIntent());
+      newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+      currentActivity.startActivity(newIntent);
+
+      ReadableMap shared = extractShared(newIntent);
+      successCallback.invoke(shared);
+      clearSharedText();
+      currentActivity.finish();
+      return;
+    }
 
+    Intent intent = currentActivity.getIntent();
+    
     ReadableMap shared = extractShared(intent);
     successCallback.invoke(shared);
     clearSharedText();