RecyclerView实现自动滚动并无限循环_recyclerview 自动无限滚动

背景

项目中要实现无限循环自动滚动的轮播图，自然而然想到了RecyclerView，但我们常用的RecyclerView是不支持无限循环滚动的，所以就需要一些办法让它能够无限循环。

自动滚动实现

public class MainActivity extends AppCompatActivity {
   

    private RecyclerView mTipInfoRv;
    private TextView mTextView;
    private int showPageIndex;
    private boolean dragging = false;
    private Handler mCyclicRollHandler = new Handler();

    Runnable cycleRollRunabler = new Runnable() {
   
        @Override
        public void run() {
   
            if (showPageIndex + 1 >= 5) {
   
                mTipInfoRv.scrollToPosition(0);
                showPageIndex = 0;
            } else {
   
            	showPageIndex += 1;
                mTipInfoRv.smoothScrollToPosition(showPageIndex);
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
   
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTipInfoRv = findViewById(R.id.rv_Tipinfo);
        mTextView = findViewById(R.id.textview);

        final LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        mTipInfoRv.setLayoutManager(layoutManager);
        MainAdapter tMainAdapter = new MainAdapter(this);
        mTipInfoRv.setAdapter(tMainAdapter);
        //用于辅助RecyclerView在滚动结束时将Item对齐到某个位置
        PagerSnapHelper snapHelper = new PagerSnapHelper();
        snapHelper.attachToRecyclerView(mTipInfoRv);
        mTipInfoRv.addOnScrollListener(new RecyclerView.OnScrollListener(
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