XRecyclerView刷新、加载

最新推荐文章于 2019-05-06 11:39:48 发布

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最新推荐文章于 2019-05-06 11:39:48 发布

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本文链接：https://blog.youkuaiyun.com/gss8023/article/details/78333274

我们刷新加载用到的依赖：compile 'com.jcodecraeer:xrecyclerview:1.2.6'

先看看Fragment和ViewPager的滑动，
看看activity_main布局：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="460dp"
        android:layout_above="@+id/layout"
        android:layout_alignParentTop="true"
        />
    <LinearLayout
        android:id="@+id/layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:orientation="horizontal"
        >
        <RadioButton
            android:id="@+id/radio_shou"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:drawableTop="@drawable/radioshou"
            android:button="@null"
            android:text="首页"
            android:gravity="center"
            />
        <RadioButton
            android:id="@+id/radio_zhu"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:drawableTop="@drawable/radiozhu"
            android:button="@null"
            android:text="主题"
            android:gravity="center"
            />
        <RadioButton
            android:id="@+id/radio_wo"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:drawableTop="@drawable/radiowo"
            android:button="@null"
            android:text="我的"
            android:gravity="center"
            />
  </LinearLayout>
</RelativeLayout>

小知识：radio_shou:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:drawable="@drawable/shouye2"></item>
<item android:state_checked="false" android:drawable="@drawable/shouye1"></item>
</selector>剩下的都一样哦！


再看MainActivity：
import android.graphics.Color;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioButton;
import com.honey.test.fragment.FragmentOne;
import com.honey.test.fragment.FragmentThree;
import com.honey.test.fragment.FragmentTwo;

public class MainActivity extends FragmentActivity implements View.OnClickListener {
    private ViewPager viewpager;
    private RadioButton radio_shou;
    private RadioButton radio_zhu;
    private RadioButton radio_wo;
    private MyFragmentViewpager fragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //初始化控件
        initView();
    }
    /**
     * 获取数据
     */
    private void initView() {
        viewpager=findViewById(R.id.viewpager);
        radio_shou=findViewById(R.id.radio_shou);
        radio_zhu=findViewById(R.id.radio_zhu);
        radio_wo=findViewById(R.id.radio_wo);
        //默认
        radio_shou.setTextColor(Color.RED);
        radio_shou.setChecked(true);
        //可点击
        radio_shou.setOnClickListener(this);
        radio_zhu.setOnClickListener(this);
        radio_wo.setOnClickListener(this);
        fragment = new MyFragmentViewpager(getSupportFragmentManager());
        viewpager.setAdapter(fragment);
        /**
         * ViewPager滑动颜色
         */
        viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            }
            @Override
            public void onPageSelected(int position) {
                switch (position){
                    case 0:
                        radio_shou.setTextColor(Color.RED);
                        radio_zhu.setTextColor(Color.BLACK);
                        radio_wo.setTextColor(Color.BLACK);
                        //改变图片颜色
                        radio_shou.setChecked(true);
                        radio_zhu.setChecked(false);
                        radio_wo.setChecked(false);
                        break;
                    case 1:
                        radio_shou.setTextColor(Color.BLACK);
                        radio_zhu.setTextColor(Color.RED);
                        radio_wo.setTextColor(Color.BLACK);
                        //改变图片颜色
                        radio_shou.setChecked(false);
                        radio_zhu.setChecked(true);
                        radio_wo.setChecked(false);
                        break;
                    case 2:
                        radio_shou.setTextColor(Color.BLACK);
                        radio_zhu.setTextColor(Color.BLACK);
                        radio_wo.setTextColor(Color.RED);
                        //改变图片颜色
                        radio_shou.setChecked(false);
                        radio_zhu.setChecked(false);
                        radio_wo.setChecked(true);
                        break;
                }
            }
            @Override
            public void onPageScrollStateChanged(int state) {
            }
        });
    }

    /**
     * 点击事件
     * @param view
     */
    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.radio_shou:
                radio_shou.setTextColor(Color.RED);
                radio_zhu.setTextColor(Color.BLACK);
                radio_wo.setTextColor(Color.BLACK);
                //改变图片颜色
                radio_shou.setChecked(true);
                radio_zhu.setChecked(false);
                radio_wo.setChecked(false);
                break;
            case R.id.radio_zhu:
                radio_shou.setTextColor(Color.BLACK);
                radio_zhu.setTextColor(Color.RED);
                radio_wo.setTextColor(Color.BLACK);
                //改变图片颜色
                radio_shou.setChecked(false);
                radio_zhu.setChecked(true);
                radio_wo.setChecked(false);
                break;
            case R.id.radio_wo:
                radio_shou.setTextColor(Color.BLACK);
                radio_zhu.setTextColor(Color.BLACK);
                radio_wo.setTextColor(Color.RED);
                //改变图片颜色
                radio_shou.setChecked(false);
                radio_zhu.setChecked(false);
                radio_wo.setChecked(true);
                break;
        }
    }

    public class MyFragmentViewpager extends FragmentPagerAdapter{

        public MyFragmentViewpager(FragmentManager fm) {
            super(fm);
        }
        @Override
        public Fragment getItem(int position) {
            Fragment fragment=null;
            switch (position){
                case 0:
                    fragment =new FragmentOne();
                    break;
                case 1:
                    fragment=new FragmentTwo();
                    break;
                case 2:
                    fragment=new FragmentThree();
                    break;
            }
            return fragment;
        }

        @Override
        public int getCount() {
            return 3;
        }
    }
}


FragmentOne中就用到了XRecyclerView的刷新和加载了：
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.google.gson.Gson;
import com.honey.test.R;
import com.honey.test.adapter.MyAdapter;
import com.honey.test.api.APi;
import com.honey.test.entity.News;
import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class FragmentOne extends Fragment {
    private int page=1;
    private View view;
    private XRecyclerView recyclerView;
    private Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if(msg.what==1){
                if(adapter==null){
                    LinearLayoutManager manager = new LinearLayoutManager(getContext());
                    recyclerView.setLayoutManager(manager);
                    adapter = new MyAdapter(getActivity(),data);
                    recyclerView.setAdapter(adapter);
                    adapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
                        @Override
                        public void onItemClick(View v, int position) {
                            Toast.makeText(getContext(),data.get(position).getIntroduction(), Toast.LENGTH_SHORT).show();
                        }
                    });
                }else{
                    adapter.notifyDataSetChanged();
                }
            }
        }
    };
    private List<News.DataBean> dataList;
    private List<News.DataBean> data=new ArrayList<>();
    private MyAdapter adapter;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        if(view==null){
            view = inflater.inflate(R.layout.item_f1,container,false);
        }
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        //初始化控件
        initView();
        //初始化数据
        initData(page);
    }
    /**
     * 获取数据
     */
    private void initData(int page) {
        OkHttpClient okHttpClient=new OkHttpClient();
        FormBody.Builder builder=new FormBody.Builder();
        builder.add("page", String.valueOf(page));
        System.out.println("=====page"+page);
        Request request=new Request.Builder().url(APi.URL).post(builder.build()).build();
        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String result = response.body().string();
                System.out.println("====="+result);
                Gson gson = new Gson();
                News news = gson.fromJson(result, News.class);
                dataList = news.getData();
                data.addAll(dataList);
                System.out.println("====="+data);
                    handler.sendEmptyMessage(1);
            }
        });
    }
    /**
     *获取控件
     */
    private void initView() {
        recyclerView = view.findViewById(R.id.recyclerView);
        LinearLayoutManager manager=new LinearLayoutManager(getActivity());
        manager.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(manager);
        //属性动画渐变
        recyclerView.setItemAnimator(new DefaultItemAnimator());
        recyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {
                data.clear();
                adapter=null;
                page=1;
                initData(page);
                Toast.makeText(getActivity(), "刷新成功~", Toast.LENGTH_SHORT).show();
                recyclerView.refreshComplete();
            }

            @Override
            public void onLoadMore() {
                page++;
                initData(page);
                Toast.makeText(getActivity(), "加载成功~", Toast.LENGTH_SHORT).show();
                //设置停止加载
                recyclerView.loadMoreComplete();
            }
        });
    }
}
fragmentone的xml就只有XRecyclerView的布局，在这就不演示了。


看一下适配器和点击事件：
MyAdapter：
import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;
import com.honey.test.R;
import com.honey.test.entity.News;

import java.util.List;

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolderOne>{
    private Context context;
    private List<News.DataBean> list;

    public MyAdapter(Context context, List<News.DataBean> list) {
        this.context = context;
        this.list = list;
    }

    @Override
    public MyAdapter.ViewHolderOne onCreateViewHolder(ViewGroup parent, int viewType) {
        View view=View.inflate(context, R.layout.item_recycler,null);
        ViewHolderOne holderOne=new ViewHolderOne(view);
        return holderOne;
    }
    @Override
    public void onBindViewHolder(MyAdapter.ViewHolderOne holder, final int position) {
        holder.tv_one.setText(list.get(position).getTitle());
        holder.tv_one_one.setText(list.get(position).getIntroduction());
        Glide.with(context).load(list.get(position).getImg()).into(holder.image_one);
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mOnItemClickListener.onItemClick(view,position);
            }
        });
    }
    @Override
    public int getItemCount() {
        return list.size();
    }

    public class ViewHolderOne extends RecyclerView.ViewHolder{
        public TextView tv_one,tv_one_one;
        public ImageView image_one;
        public ViewHolderOne(View itemView) {
            super(itemView);
            tv_one=itemView.findViewById(R.id.tv_one);
            tv_one_one=itemView.findViewById(R.id.tv_one_one);
            image_one=itemView.findViewById(R.id.image_one);
        }
    }
    /**
     * 回调接口
     */
    private OnItemClickListener mOnItemClickListener;

    public interface OnItemClickListener {
        void onItemClick(View v, int position);
    }
    public void setOnItemClickListener(OnItemClickListener itemClickListener) {
        mOnItemClickListener = itemClickListener;
    }
}