使用FrameLayout在RecyclerView上的SurfaceView

Question

我尝试使用FrameLayout将SurfaceView放在RecyclerView的顶部（哇是标题：D）。但即使我在SurfaceView中根本不绘制，屏幕也会变黑，我根本看不到RecyclerView。

我的MainActivity中的三个初始化：

我的表面视图：

surfaceView = new SurView(this, screenX, screenY);

我的RecyclerView：

RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

for (int i = 0; i < 100; i++) {
                input.add("Test" + i);
}

mAdapter = new RealFarmAdapter(input);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(mAdapter);

if (recyclerView != null) {
    ViewGroup parent = (ViewGroup) recyclerView.getParent();
    if (parent != null) {
        parent.removeView(recyclerView);
    }
}

我的FrameLayout：

FrameLayout frameLayout = new FrameLayout(this);
frameLayout.addView(recyclerView, 0);
frameLayout.addView(surfaceView, 1);