VLayout简单使用

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;

import com.alibaba.android.vlayout.DelegateAdapter;
import com.alibaba.android.vlayout.VirtualLayoutManager;
import com.alibaba.android.vlayout.layout.GridLayoutHelper;
import com.alibaba.android.vlayout.layout.LinearLayoutHelper;

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

public class VlayoutDelegateAdapterActivity extends Activity{
    private RecyclerView recyclerView;
    private VlayoutDelegateAdapterAdapter vlayoutAdapter;
    private List<String> datas;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.vlayout_layout);
        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
        datas = new ArrayList<>();
        for (int i = 0; i < 100; i++) {
            datas.add("VlayoutActivity"+i);
        }

        //绑定VirtualLayoutManager
        VirtualLayoutManager layoutManager = new VirtualLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);
        LinearLayoutHelper linearLayoutHelper = new LinearLayoutHelper();
        linearLayoutHelper.setItemCount(5);
        linearLayoutHelper.setMarginBottom(20);

        GridLayoutHelper gridLayoutHelper1 = new GridLayoutHelper(3);
        gridLayoutHelper1.setItemCount(11);
        gridLayoutHelper1.setMarginBottom(20);
        gridLayoutHelper1.setAutoExpand(false);

        GridLayoutHelper gridLayoutHelper2 = new GridLayoutHelper(5);
        gridLayoutHelper2.setItemCount(10);
        gridLayoutHelper2.setAutoExpand(false);
        gridLayoutHelper2.setMarginBottom(20);

        List<DelegateAdapter.Adapter> adapters = new LinkedList<>();
        adapters.add(new VlayoutDelegateAdapterAdapter(this,linearLayoutHelper,5, datas){
            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
            }
        });

        adapters.add(new VlayoutDelegateAdapterAdapter(this,gridLayoutHelper1,11, datas){
            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
            }
        });
        adapters.add(new VlayoutDelegateAdapterAdapter(this,gridLayoutHelper2,10, datas){
            @Override
            public void onBindViewHolder(MainViewHolder holder, int position) {
                super.onBindViewHolder(holder, position);
            }
        });

        //绑定delegateAdapter
        DelegateAdapter delegateAdapter = new DelegateAdapter(layoutManager);
        delegateAdapter.setAdapters(adapters);
        recyclerView.setAdapter(delegateAdapter);
    }
}

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;

import com.alibaba.android.vlayout.DelegateAdapter;
import com.alibaba.android.vlayout.LayoutHelper;
import com.alibaba.android.vlayout.VirtualLayoutManager;
import com.alibaba.android.vlayout.layout.FixAreaLayoutHelper;
import com.alibaba.android.vlayout.layout.FixLayoutHelper;
import com.alibaba.android.vlayout.layout.FloatLayoutHelper;
import com.alibaba.android.vlayout.layout.GridLayoutHelper;
import com.alibaba.android.vlayout.layout.LinearLayoutHelper;
import com.alibaba.android.vlayout.layout.ScrollFixLayoutHelper;

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

public class VlayoutVirtualAdapterActivity extends Activity{
    private RecyclerView recyclerView;
    private VlayoutDelegateAdapterAdapter vlayoutAdapter;
    private List<String> datas;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.vlayout_layout);
        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
        datas = new ArrayList<>();
        for (int i = 0; i < 100; i++) {
            datas.add("VlayoutActivity"+i);
        }

        //绑定VirtualLayoutManager
        VirtualLayoutManager layoutManager = new VirtualLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);

        LinearLayoutHelper linearLayoutHelper = new LinearLayoutHelper();
        linearLayoutHelper.setItemCount(5);
        linearLayoutHelper.setMarginBottom(20);

        GridLayoutHelper gridLayoutHelper1 = new GridLayoutHelper(3);
        gridLayoutHelper1.setItemCount(11);
        gridLayoutHelper1.setMarginBottom(20);
        gridLayoutHelper1.setAutoExpand(false);

        GridLayoutHelper gridLayoutHelper2 = new GridLayoutHelper(5);
        gridLayoutHelper2.setItemCount(10);
        gridLayoutHelper2.setAutoExpand(false);
        gridLayoutHelper2.setMarginBottom(20);


        FixAreaLayoutHelper fixAreaLayoutHelper = new FixLayoutHelper(FixLayoutHelper.TOP_LEFT,10,10);
        fixAreaLayoutHelper.setItemCount(1);

        FloatLayoutHelper floatLayoutHelper = new FloatLayoutHelper();
        floatLayoutHelper.setItemCount(1);
        floatLayoutHelper.setMarginBottom(100);

        ScrollFixLayoutHelper scrollFixLayoutHelper = new ScrollFixLayoutHelper(ScrollFixLayoutHelper.SHOW_ON_ENTER, 100, 100);
        scrollFixLayoutHelper.setItemCount(1);


        List<LayoutHelper> helpers = new LinkedList<>();
        helpers.add(gridLayoutHelper1);
        helpers.add(linearLayoutHelper);
        helpers.add(gridLayoutHelper2);
        helpers.add(fixAreaLayoutHelper);
        helpers.add(floatLayoutHelper);
        helpers.add(scrollFixLayoutHelper);
//        helpers.add(columnLayoutHelper);
//        helpers.add(singleLayoutHelper);
//        helpers.add(onePlusNLayoutHelper);
//        helpers.add(staggeredGridLayoutHelper);

        layoutManager.setLayoutHelpers(helpers);

        recyclerView.setAdapter(new VlayoutVirtualAdapterAdapter(this, layoutManager, datas, 29));
    }
}

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.alibaba.android.vlayout.LayoutHelper;
import com.alibaba.android.vlayout.VirtualLayoutAdapter;
import com.alibaba.android.vlayout.VirtualLayoutManager;

import java.util.List;


public class VlayoutVirtualAdapterAdapter extends VirtualLayoutAdapter<VlayoutVirtualAdapterAdapter.MainViewHolder> {
    private Context context;
    private LayoutHelper layoutHelper;
    private RecyclerView.LayoutParams layoutParams;
    private int count = 0;
    private List<String> datas;

    public VlayoutVirtualAdapterAdapter(Context context, VirtualLayoutManager virtualLayoutManager, List<String> datas, int count) {
        super(virtualLayoutManager);
        this.context = context;
        this.datas = datas;
        this.count = count;
    }

    @Override
    public MainViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new MainViewHolder(LayoutInflater.from(context).inflate(R.layout.vlayout_layout_cell,parent,false));
    }

    @Override
    public void onBindViewHolder(MainViewHolder holder, int position) {
        holder.tv1.setText(datas.get(position));
        if (position == 25) {
            holder.itemView.setBackgroundColor(0xccff22ff);
        }else if (position == 26) {
            holder.itemView.setBackgroundColor(0xaa22ff22);
        }else if (position == 27) {
            holder.itemView.setBackgroundColor(0xccff22ff);
        }else {
            if (position % 2 == 0) {
                holder.itemView.setBackgroundColor(0xffBF2BFF);
            } else {
                holder.itemView.setBackgroundColor(0xffE8FF1E);
            }
        }

    }

    @Override
    public int getItemCount() {
        return count;
    }


    static class MainViewHolder extends RecyclerView.ViewHolder {
        public TextView tv1;
        public MainViewHolder(View itemView) {
            super(itemView);
            tv1 = (TextView) itemView.findViewById(R.id.text);
        }
    }
}