c-brain-glass/app/src/main/res/layout/activity_welcome.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:app="http://schemas.android.com/apk/res-auto">
    <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:background="@color/app_color_black"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#ff3FFF5F"
            android:textSize="19sp"
            android:text="您可以说：Nova，我的任务有哪些？"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintBottom_toTopOf="@id/btnRow" />

        <LinearLayout
            android:id="@+id/btnRow"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:gravity="center"
            android:layout_marginHorizontal="16dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintBottom_toTopOf="@id/scrollResult"
            app:layout_constraintTop_toBottomOf="@id/tv">

            <TextView
                android:id="@+id/btnGet"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="1"
                android:layout_marginEnd="8dp"
                android:gravity="center"
                android:background="#33FFFFFF"
                android:textColor="#ff3FFF5F"
                android:textSize="14sp"
                android:text="GET演示" />

            <TextView
                android:id="@+id/btnPost"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="1"
                android:layout_marginEnd="8dp"
                android:gravity="center"
                android:background="#33FFFFFF"
                android:textColor="#ff3FFF5F"
                android:textSize="14sp"
                android:text="POST演示" />

            <TextView
                android:id="@+id/btnSse"
                android:layout_width="0dp"
                android:layout_height="40dp"
                android:layout_weight="1"
                android:gravity="center"
                android:background="#33FFFFFF"
                android:textColor="#ff3FFF5F"
                android:textSize="14sp"
                android:text="SSE演示" />
        </LinearLayout>

        <ScrollView
            android:id="@+id/scrollResult"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:layout_marginTop="8dp"
            app:layout_constraintTop_toBottomOf="@id/btnRow"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent">

            <TextView
                android:id="@+id/tvResult"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:padding="12dp"
                android:textColor="#ff3FFF5F"
                android:textSize="11sp"
                android:fontFamily="monospace"
                android:text="" />
        </ScrollView>

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>