详解分别用Kotlin和java写RecyclerView的示例-创新互联

本文介绍了分别用Kotlin和java写RecyclerView的示例，分享给大家，具体如下：

java：跟一般的写法一样，增加了按钮响应

MainActivity：

public class MainActivity extends AppCompatActivity implements RecyclerAdapter.OnItemClickListener{
    private RecyclerView mRecyclerView;
    private RecyclerView.LayoutManager mLayoutManager;
    private RecyclerAdapter mRecyclerAdapter;
    private ArrayListlist;

    @Override
    protected void onCreate(Bundlesaved InstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        RecyclerItem item;
        list = new ArrayList<>();
        item = new RecyclerItem();
        item.setName("No."+0);
        list.add(item);
        mRecyclerView = findViewById(R.id.recyclerView);
        mRecyclerAdapter = new RecyclerAdapter(this,list);
        mRecyclerAdapter.setOnItemClickListener(this);
        // 竖直方向的网格样式，每行一个Item
        mLayoutManager=new GridLayoutManager(this,3,OrientationHelper.VERTICAL,false);
        // 设置布局管理器
        mRecyclerView.setLayoutManager(mLayoutManager);
        // 设置adapter
        mRecyclerView.setAdapter(mRecyclerAdapter);
        // 设置Item添加和移除的动画
        mRecyclerView.setItemAnimator(newDefaultItemAnimator());
    }
    //adapter的按钮点击事件
    @Override
    public void onItemContentClick(Viewview,intposition) {
        //点击最后一个按钮增加一个item
        if(position == list.size()-1) {
          RecyclerItemitem=newRecyclerItem();
          item.setName("No."+(position+1));
          list.add(0,item);
          //更新RecyclerView
          mRecyclerAdapter.updateData(list);
        }else{
          Toast.makeText(this,"No."+position,Toast.LENGTH_SHORT).show();
        }
    }
}