package com.sqh.market.fragments;
import android.content.Context;
import android.content.Intent;
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.v4.view.ViewPager;
import android.support.v4.widget.SwipeRefreshLayout;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.SearchView;
import android.widget.Toast;
import com.alibaba.fastjson.JSON;
import com.sqh.market.R;
import com.sqh.market.activity.DetailsActivity;
import com.sqh.market.activity.SearchViewActivity;
import com.sqh.market.adapter.GlideImageLoader;
import com.sqh.market.adapter.HomePageGridViewAdapter;
import com.sqh.market.adapter.HomePageViewPagerAdapter;
import com.sqh.market.adapter.HotGridViewAdapter;
import com.sqh.market.adapter.RecommendGridViewAdapter;
import com.sqh.market.constant.Constants;
import com.sqh.market.models.CommodityModel;
import com.sqh.market.models.CommodityTypeModel;
import com.sqh.market.utils.ListUtil;
import com.sqh.market.utils.NetUtil;
import com.youth.banner.Banner;
import com.youth.banner.BannerConfig;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;
/**
* 首页
*
* @author 郑龙
*/
public class HomePage extends Fragment {
/**
* 轮播
*/
private Banner banner;
/**
* GridView小圆点指示器
*/
private ViewGroup points;
/**
* 小圆点指示器图片集合
*/
private ImageView[] ivPoints;
/**
* viewPager
*/
private ViewPager viewPager;
/**
* 总的页数
*/
private int totalPage = 0;
/**
* 每页显示的最大数量
*/
private int mPageSize = 10;
/**
* 商品数据源
*/
private List<CommodityTypeModel> listData = new ArrayList<>();
/**
* GridView作为一个View对象添加到ViewPager集合中
*/
private List<View> viewPagerList;
/**
* 热评产品
*/
private GridView hotProductGridView;
/**
* 推荐产品
*/
private GridView recommendProductGridView;
/**
* 热评和推荐商品的两个进度条
*/
private ProgressBar hotProgressBar, recommendProgressBar;
private HotGridViewAdapter hotProductGridViewAdapter;
private RecommendGridViewAdapter recommendProductGridViewAdapter;
private SearchView searchView;
private ArrayList<String> imageList = new ArrayList<>();
/**
* 一次请求到分页商品数据
*/
private List<CommodityModel> listItem = new ArrayList<>();
/**
* 热评商品List
*/
private List<CommodityModel> listItemHot = new ArrayList<>();
/**
* 推荐商品List
*/
private List<CommodityModel> listItemRecommend = new ArrayList<>();
/**
* 下拉刷新的layout
*/
private SwipeRefreshLayout mRefreshLayout;
/**
* 为了刷新不增加小点增加的记录的变量
*/
private int firstFlag = 0;
/**
* 定义一个自己的context
*/
private Context mContext;
/**
* 用于从网络初始化UI的handler
*/
private Handler uiHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case -1:
//网络请求失败
Toast.makeText(mContext, "网络请求失败！获取商品类别失败！", Toast.LENGTH_SHORT).show();
break;
case 0:
//网络请求成功，但是返回状态为失败
Toast.makeText(mContext, msg.obj == null ? "获取商品数据失败！" : msg.obj.toString(), Toast.LENGTH_SHORT).show();
break;
case 1:
//网络请求商品类别返回成功时，初始化控件
initViewPage();
break;
case 2:
//随机两款商品作为热销商品
listItemHot = ListUtil.getRandomList(listItem, 2);
//模拟获取热评商品
hotProductGridViewAdapter = new HotGridViewAdapter(HomePage.this.getContext(), listItemHot);
hotProductGridView.setAdapter(hotProductGridViewAdapter);
//设置gridview点击事件
hotProductGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(getActivity(), DetailsActivity.class);
//将对应的产品id传到详情界面
intent.putExtra("id", listItemHot.get(position).getId() + "");
startActivity(intent);
}
});
//停止显示热评商品加载动画，显示商品信息
hotProgressBar.setVisibility(View.GONE);
hotProductGridView.setVisibility(View.VISIBLE);
//随机两款商品作为热销商品
listItemRecommend = ListUtil.getRandomList(listItem, 2);
//模拟获取推荐商品
recommendProductGridViewAdapter = new RecommendGridViewAdapter(HomePage.this.getContext(), listItemRecommend);
recommendProductGridView.setAdapter(recommendProductGridViewAdapter);
//设置gridView点击事件
recommendProductGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(getActivity(), DetailsActivity.class);
//将对应的产品id传到详情界面
intent.putExtra("id", listItemRecommend.get(position).getId() + "");
startActivity(intent);
}
});
//停止显示热评商品加载动画，显示商品信息
recommendProgressBar.setVisibility(View.GONE);
recommendProductGridView.setVisibility(View.VISIBLE);
break;
default:
break;
}
//判断刷新动画
if (mRefreshLayout.isRefreshing()) {
//停止动画
mRefreshLayout.setRefreshing(false);
}
}
};
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_homepage, null);
// 初始化控件
initView(view);
//转存context
mContext = getActivity().getApplicationContext();
//判断网络状态，并初始化数据
if (NetUtil.isNetworkAvailable(getContext())) {
//获取分类
initCategoryClassification();
//加载轮播图
initBanner();
//获取热评商品
initCommodityList(Constants.HOME_PAGE_LIMIT, 0, true);
} else {
// TODO: 2019/3/21 这里会弹出一个框，提示网络不正常！
Toast.makeText(getActivity().getApplicationContext()
, "当前网络环境不正常，商品 信息可能无法显示"
, Toast.LENGTH_LONG).show();
}
//设置searchView点击事件
setSearchViewIntent();
// 刷新监听。
mRefreshLayout.setOnRefreshListener(mRefreshListener);
return view;
}
/**
* 初始化广告页
*/
private void initBanner() {
//清空旧数据
imageList.clear();
imageList.add(Constants.BASE_ADS_URL + Constants.ADS.ADS_URL1.getUrl());
imageList.add(Constants.BASE_ADS_URL + Constants.ADS.ADS_URL2.getUrl());
banner.setImages(imageList);
banner.start();
}
/**
* 刷新
*/
private SwipeRefreshLayout.OnRefreshListener mRefreshListener = new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
//获取分类
initCategoryClassification();
//加载轮播图
initBanner();
//获取商品分页数据
initCommodityList(Constants.HOME_PAGE_LIMIT, 0, true);
}
};
/**
* 获取商品分页数据
*
* @param limit 拉取数据条数（首页建议为6）
* @param page 页码
* @param isRandomPage 是否采用随机页码
*/
private void initCommodityList(int limit, int page, boolean isRandomPage) {
//初始化随机页码
int randomPage = (int) (Math.random() * (Constants.MAX - Constants.MIN)) + Constants.MIN;
//构造请求URL
String url = Constants.BASE_URL + Constants.GET_COMMODITY_URL
+ "?limit=" + limit;
//判断是否需要随机生成页码
if (isRandomPage) {
url += "&page=" + randomPage;
} else {
url += "&page=" + page;
}
NetUtil.doGet(url, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e("TAG", "错误信息：" + e.toString());
Message message = Message.obtain();
message.what = -1;
uiHandler.sendMessage(message);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String result = response.body().string().trim();
com.alibaba.fastjson.JSONObject object = JSON.parseObject(result);
Message message = Message.obtain();
if (object.getBoolean("flag")) {
com.alibaba.fastjson.JSONObject data = (com.alibaba.fastjson.JSONObject) object.get("data");
com.alibaba.fastjson.JSONArray array = data.getJSONArray("lists");
//获得商品list
listItem = com.alibaba.fastjson
.JSONArray.parseArray(array.toString(), CommodityModel.class);
message.what = 2;
} else {
message.what = 0;
}
uiHandler.sendMessage(message);
}
}
);
}
/**
* 初始化GridView
*/
private void initViewPage() {
LayoutInflater inflater2 = LayoutInflater.from(this.getContext());
//总的页数，取整（这里有三种类型：Math.ceil(3.5)=4:向上取整，只要有小数都+1 Math.floor(3.5)=3：向下取整 Math.round(3.5)=4:四舍五入）
//这个被tjs改过
//if(totalPage>0){
totalPage = (int) Math.ceil(listData.size() * 1.0 / mPageSize);
//}
viewPagerList = new ArrayList<>();
for (int i = 0; i < totalPage; i++) {
//每个页面都是inflate出一个新实例
GridView gridView = (GridView) inflater2.inflate(R.layout.gridview_layout, viewPager, false);
gridView.setAdapter(new HomePageGridViewAdapter(this.getContext(), listData, i, mPageSize));
//每一个GridView作为一个View对象添加到ViewPager集合中
viewPagerList.add(gridView);
}
//设置ViewPager适配器
viewPager.setAdapter(new HomePageViewPagerAdapter(viewPagerList));
//小圆点指示器
if (firstFlag == 0) {
ivPoints = new ImageView[totalPage];
for (int i = 0; i < ivPoints.length; i++) {
ImageView imageView = new ImageView(getContext());
//设置图片的宽高
imageView.setLayoutParams(new ViewGroup.LayoutParams(10, 10));
if (i == 0) {
imageView.setBackgroundResource(R.drawable.page__selected_indicator);
} else {
imageView.setBackgroundResource(R.drawable.page__normal_indicator);
}
ivPoints[i] = imageView;
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
layoutParams.leftMargin = 10;//设置点点点view的左边距
layoutParams.rightMargin = 10;//设置点点点view的右边距
points.addView(imageView, layoutParams);
}
}
if (totalPage > 0) {
firstFlag++;
}
//设置ViewPager滑动监听
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
//改变小圆圈指示器的切换效果
setImageBackground(position);
// currentPage = position;
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
/**
* 初始化获取商品分类
*/
private void initCategoryClassification() {
String categoryTypeUrl = Constants.BASE_URL + Constants.GET_COMMODITY_TYPES_URL;
NetUtil.doGet(categoryTypeUrl, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e("网络请求失败！", "网络请求失败！获取商品类别列表失败！");
Message message = Message.obtain();
message.what = -1;
uiHandler.sendMessage(message);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String result = response.body().string().trim();
com.alibaba.fastjson.JSONObject obj = JSON.parseObject(result);
Message message = Message.obtain();
if (obj.getBoolean("flag")) {
message.what = 1;
//获得商品类型数据
List<CommodityTypeModel> types = com.alibaba.fastjson.JSONArray
.parseArray(JSON.toJSONString(obj.get("data"))
, CommodityTypeModel.class);
listData = types;
} else {
message.what = 0;
}
message.obj = obj.getString("message");
uiHandler.sendMessage(message);
}
});
}
/**
* 初始化绑定控件
*
* @param view view
*/
public void initView(View view) {
mRefreshLayout = view.findViewById(R.id.refresh_layout);
viewPager = view.findViewById(R.id.viewPager);
//初始化小圆点指示器
points = view.findViewById(R.id.points);
//绑定两个进度条
hotProgressBar = view.findViewById(R.id.hot_progress);
recommendProgressBar = view.findViewById(R.id.recommend_progress);
banner = view.findViewById(R.id.banner);
//设置banner样式
banner.setBannerStyle(BannerConfig.CIRCLE_INDICATOR);
//设置图片加载器
banner.setImageLoader(new GlideImageLoader());
hotProductGridView = view.findViewById(R.id.hot_gridview);
recommendProductGridView = view.findViewById(R.id.recommend_gridview);
searchView = view.findViewById(R.id.home_serachview);
}
/**
* searchView点击跳转
*/
private void setSearchViewIntent() {
searchView.setFocusable(false);
searchView.clearFocus();
//设置搜索框焦点
searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus)
searchView.clearFocus();
else {
Intent intent = new Intent(getActivity(), SearchViewActivity.class);
intent.putExtra("fatherName", ".HomePage");
startActivityForResult(intent, 1);
}
}
});
}
/**
* 设置GridView图片背景
*
* @param selectItems 选中项index
*/
private void setImageBackground(int selectItems) {
for (int i = 0; i < ivPoints.length; i++) {
if (i == selectItems) {
ivPoints[i].setBackgroundResource(R.drawable.page__selected_indicator);
} else {
ivPoints[i].setBackgroundResource(R.drawable.page__normal_indicator);
}
}
}
}
