scrollview嵌套recyclerview卡顿现象

   <android.support.v7.widget.RecyclerView
                            android:id="@+id/rv_lineView"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:layout_marginTop="20dip"
                            android:clipToPadding="false"
                            tools:listitem="@layout/item_timeline"
                            android:nestedScrollingEnabled="false"/>

   rv_lineView.setNestedScrollingEnabled(false);