Android开发笔记：关于RecyclerView 滑动到底部

方法一：

```

Runnable mRunnable = new Runnable() {

@Override

    public void run() {

            if (mList.size() >0 &&mRecylerView !=null) {

           mRecylerView.scrollToPosition(mList.size() -1);

           }

     }

};

if ( mList.size() >0  && mRecylerView != null ) {

       mRecylerView.scrollToPosition(mList.size() -1);

       mRecylerView.postDelayed(mRunnable,50);

}

```

方法二：布局中添加两行代码：

```

android:layout_height="0dp"

app:layout_constraintBottom_toBottomOf="parent"

```