在安卓中将LinearLayout设置为16:9？

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <View
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="9" />

    <View
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="16" />
</LinearLayout>

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <View
        android:id="@+id/view1"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintDimensionRatio="9:16"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

public class AspectRatioView extends View {
    private static final float ASPECT_RATIO = 16f / 9f;

    public AspectRatioView(Context context) {
        super(context);
    }

    public AspectRatioView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = (int) (width / ASPECT_RATIO);
        setMeasuredDimension(width, height);
    }
}

<com.example.AspectRatioView
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />