title: react-native add fragment to view is not showing
body: <p>I have added a dynamic generated FrameLayout to a react-native view. The Framelayout is showing up. but when I add a fragment to the view, nothing is showing.</p>
  
  <p>here is a part of the code:</p>
  
  <pre><code>    public FrameLayout createViewInstance(ThemedReactContext context) {
  
              Fragment fragment = MapFragment.newInstance(mapKey);
              FrameLayout view = new FrameLayout(context);
              view.setWillNotDraw(false);
  
              LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
              view.setLayoutParams(lp);
  
              view.setId(View.generateViewId());
  
              view.setBackgroundColor(Color.parseColor("#1FFDDB"));
  
              FragmentActivity activity = MainActivity.getFragmentActivity();
  
              FragmentManager fragmentManager = activity.getSupportFragmentManager();
  
              fragmentManager.beginTransaction().remove(fragment).commit();
              fragmentManager.executePendingTransactions();
  
              FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
  
              fragmentTransaction.add(0, fragment);
  
              fragmentTransaction.show(fragment);
              fragmentTransaction.attach(fragment);
              fragmentTransaction.commit();
              fragmentManager.executePendingTransactions();
              return view;
          }
  </code></pre>
  
  <p>When I add a TextView to the view it is showing:</p>
  
  <pre><code>// add a textfield to the view
  TextView textView1 = new TextView(context);
  textView1.setText("Android");
  textView1.setTextSize(30);
  textView1.setGravity(Gravity.CENTER);
  
  view.setVisibility(View.VISIBLE);
  
  view.addView(textView1);
  </code></pre>
  
  <p>so there is an issue with the Fragment.
  any ideas why the fragment is not showing up?</p>