bottomSheet屏蔽横向拖动

要在BottomSheet中禁用横向拖动，可以通过覆盖BottomSheetBehavior的onInterceptTouchEvent和onTouchEvent方法来实现。下面是一个示例：

public class NonDraggableBottomSheetBehavior<V extends View> extends BottomSheetBehavior<V> {

    public NonDraggableBottomSheetBehavior() {
        super();
    }

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

    @Override
    public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        // 禁用横向拖动
        if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
            return true;
        }
        return super.onInterceptTouchEvent(parent, child, event);
    }

    @Override
    public boolean onTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
        // 禁用横向拖动
        if (event.getActionMasked() == MotionEvent.ACTION_MOVE) {
            return true;
        }

        return super.onTouchEvent(parent, child, event);
    }
}

然后在布局中使用NonDraggableBottomSheetBehavior替换默认的BottomSheetBehavior即可：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Content"/>

    <FrameLayout
        android:id="@+id/bottom_sheet"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        app:behavior_hideable="true"
        app:behavior_peekHeight="50dp"
        app:layout_behavior="your.package.NonDraggableBottomSheetBehavior">

        <!-- BottomSheet内容 -->

    </FrameLayout>

</LinearLayout>