recycleview学习02

recycleview能实现listview和gridview的效果
你想要控制其显示的方式，通过布局管理器LayoutManager
你想要控制Item间的间隔（可绘制），通过ItemDecoration
你想要控制Item增删的动画，通过ItemAnimator
你想要控制点击、长按事件，要自己写

mRecyclerView = findView(R.id.id_recyclerview);
//设置布局管理器
mRecyclerView.setLayoutManager(layout);
//设置adapter
mRecyclerView.setAdapter(adapter)
//设置Item增加、移除动画
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
//添加分割线
mRecyclerView.addItemDecoration(new DividerItemDecoration(
                getActivity(), DividerItemDecoration.HORIZONTAL_LIST));

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Jay-Tang on 2016/4/10.
 */
public class HomeActivity extends Activity {
    private RecyclerView mRecyclerView;
    private List<String> mDatas;
    private HomeAdapter mAdapter;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.rvlayout);

        initData();
mRecyclerView = (RecyclerView) findViewById(R.id.id_recyclerview); //mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)); //mRecyclerView.setLayoutManager(new GridLayoutManager(this,4)); mRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(4, StaggeredGridLayoutManager.VERTICAL)); mRecyclerView.addItemDecoration(new DividerGridItemDecoration(this)); mRecyclerView.setItemAnimator(new DefaultItemAnimator()); mRecyclerView.setAdapter(new HomeAdapter());
    }


    protected void initData() {
        mDatas = new ArrayList<String>();
        for (int i = 'A'; i < 'z'; i++) {
            mDatas.add("" + (char) i);
        }
    }

    class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder> {

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            MyViewHolder holder = new MyViewHolder(LayoutInflater.from(
                    HomeActivity.this).inflate(R.layout.rvitems, parent,
                    false));
            return holder;
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
            holder.tv.setText(mDatas.get(position));
        }

        @Override
        public int getItemCount() {
            return mDatas.size();
        }

        class MyViewHolder extends RecyclerView.ViewHolder {

            TextView tv;

            public MyViewHolder(View view) {
                super(view);
                tv = (TextView) view.findViewById(R.id.id_num);
            }
        }
    }

}