android时光轴

RecyclerView实现时光轴，代码简单易懂：importandroid.support.v7.app.AppCompatActivity;importandroid.os.Bundle;importandroid.support.v7.widget.DefaultItemAnimator;importandroid.support.v7.widget.LinearLayoutManager;importandroid.support.v7.widget.RecyclerView;importjava.util.ArrayList;importjava.util.List;publicclassMainActivi