recycleView 瀑布流

recycleview分割线

compile 'com.yqritc:recyclerview-flexibledivider:1.4.0'

okhttp

compile 'com.squareup.okhttp3:okhttp:3.9.0'

Springview上下拉刷新

compile 'com.liaoinstan.springview:library:1.2.6'

不要忘记加联网权限和倒recycleview的依赖

public class MainActivity extends AppCompatActivity {
    @BindView(R.id.sv)
    SpringView sv;
    @BindView(R.id.rv)
    RecyclerView rv;
    private MyAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);


        sv.setHeader(new DefaultHeader(this));
        sv.setFooter(new DefaultFooter(this));
        sv.setType(SpringView.Type.FOLLOW);

        sv.setListener(new SpringView.OnFreshListener() {
            @Override
            public void onRefresh() {
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        sv.onFinishFreshAndLoad();
                    }
                }, 1000);
            }


            @Override
            public void onLoadmore() {
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        sv.onFinishFreshAndLoad();
                    }
                }, 1000);
            }
        });


        HorizontalDividerItemDecoration horizontalDividerItemDecoration = new HorizontalDividerItemDecoration.Builder(this)
                .color(Color.RED)
                .build();


        rv.addItemDecoration(horizontalDividerItemDecoration);
        adapter = new MyAdapter(this);
        rv.setAdapter(adapter);




        StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, LinearLayout.VERTICAL);
        rv.setLayoutManager(staggeredGridLayoutManager);




        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .url("http://qhb.2dyt.com/Bwei/news?type=9&postkey=109rff1d1AK")
                .build();
        client.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Toast.makeText(MainActivity.this, "失败", Toast.LENGTH_SHORT).show();
                System.out.println("=====111");
            }


            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String string = response.body().string();
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Gson gson = new Gson();
                        LogBean logBean = gson.fromJson(string, LogBean.class);
                        List<LogBean.ListBean> list = logBean.getList();
                        adapter.setData(list);


                    }
                });
            }
        });

    }

}

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {


    private Context context;
    private List<Bean.ListBean> list ;
    private int itemWidth ;


    public MyAdapter(Context context) {


        this.context = context;


        Point point =  Utils.getDisplayInfomation(context);


        itemWidth = point.x / 3 ;


    }




    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.adapter, parent, false);




        IViewHolder viewHolder = new IViewHolder(view);


        return viewHolder;
    }


    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {




        if(holder instanceof IViewHolder){


            IViewHolder iViewHolder = (IViewHolder)holder;


            //        float scale =  (float) itemWidth / (float) list.get(position).getPicWidth()  ;
//        params.width = itemWidth;
//        params.height = (int)( (float)scale * (float)list.get(position).getPicHeight()) ;


            LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) iViewHolder.adapterImageview.getLayoutParams() ;
            params.width = itemWidth ;
            int height =  new Random().nextInt(1000);
            params.height =  height < 300 ? 300 : height ;


            iViewHolder.adapterImageview.setLayoutParams(params);


            Glide.with(context).load(list.get(position).getPic()).into(iViewHolder.adapterImageview);


        }

    }


    @Override
    public int getItemCount() {
        return list == null ? 0 : list.size();
    }

    public void setData(Bean bean){

        if(this.list == null){
            this.list = new ArrayList<>();
        }
        this.list.addAll(bean.getList());
        notifyDataSetChanged();


    }


    static class IViewHolder extends RecyclerView.ViewHolder {
        @BindView(R.id.adapter_imageview)
        ImageView adapterImageview;


        IViewHolder(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }


}

public class Utils {
    /**
     * 获取设备屏幕尺寸
     * @param context
     * @return
     */
    public static Point getDisplayInfomation(Context context){
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        return new Point(dm.widthPixels,dm.heightPixels);
    }

}

<com.liaoinstan.springview.widget.SpringView    android:id="@+id/sv"    android:layout_width="match_parent"    android:layout_height="match_parent">    <android.support.v7.widget.RecyclerView        android:id="@+id/rv"        android:layout_width="match_parent"        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView></com.liaoinstan.springview.widget.SpringView>

<ImageView    android:id="@+id/tv"    android:scaleType="centerCrop"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    />

https://github.com/1507D/MyApplication3