Android Wear NullPointerException无法在TextView上设置文本

我正在尝试编写一个Android Wear应用程序。目前,我有一个TextView,希望以编程方式设置文本。

private TextView mTextView;
private TextView text;

public void onCreate(Bundle savedInstance) {
  super.onCreate(savedInstance);
  setContentView(R.layout.activity_my);
  final WatchViewStub stub = (WatchViewStub)findViewById(R.id.watch_view_stub);
  text = (TextView)findViewById(R.id.text);
  stub.setOnLayoutInflatedListener((stub -> {
    mTextView = (TextView)stub.findViewById(R.id.text);
  }};

  text.setText("test");
}

当尝试运行这样的应用程序时,我在

 text.setText("test");

这导致我假设没有找到TextView“文本”。通常在Android手机应用程序上

text = (TextView)findViewById(R.id.text);

直接在之后

setContentView();

但现在有了类似WatchViewStub和setOnLayoutInfratedListener的功能。也许有什么我监督过的?

然而,如何在Android Wear平台上正确指定TextView?

编辑 :

activity_my.xml:

<?xml version="1.0" encoding="utf-8"?>

<android.support.wearable.view.WatchViewStub
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/watch_view_stub"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:rectLayout="@layout/rect_activity_my"
app:roundLayout="@layout/round_activity_my"
tools:context=".MyActivity"
tools:deviceIds="wear">
</android.support.wearable.view.WatchViewStub>

rect_activity.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MyActivity"
tools:deviceIds="wear_square">

<TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/text"
    android:textSize="30sp"
    android:layout_centerInParent="true"/>

</RelativeLayout>

round_activity.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MyActivity"
tools:deviceIds="wear_round">

<TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/text"
    android:textSize="30sp"
    android:layout_centerInParent="true"/>

</RelativeLayout>