小编dir*_*ers的帖子

我已将动态生成的FrameLayout添加到react-native视图中.Framelayout正在出现.但是当我向视图添加一个片段时,什么也没有显示.

这是代码的一部分:

    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;
        }

当我向视图添加TextView时,它显示:

// 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);

所以Fragment存在问题.任何想法为什么片段没有出现？