ScrollView嵌套RecyclerView 显示不全

在RecyclerView外边在嵌套一层RelativeLayout就可以解决了

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycler"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/dp_1"
            android:layout_marginTop="@dimen/dp_1" />
    </RelativeLayout>

https://blog.csdn.net/p1522780457/article/details/70228491