说在前面，由于各种adapter，xml布局，bean实体类，Activity，也为了让看懂，代码基本都是“简单粗暴直接不好看”，没啥okhttp和util工具类之类的封装，本篇幅可能有点长吧，大佬请放过，哈~

菜鸡一枚，写得不好，有问题的请指教~~

本篇实现效果：

RecyclerView+json+okhttp+glide实现服务分类和热门主题推荐，显示，自定义接口实现RecyclerView 子item的点击事件，点击对应的item 进入对应的服务，热门详情页面。直接用简单的Intent 数据传递新闻详情信息。也可用WebView 加载新闻详情。

文章导航

一、【Android项目实战 | 从零开始写app(一)】创建项目

二、【Android项目实战 | 从零开始写app(二)】实现闪屏页，启动app

三、【Android项目实战 | 从零开始写app(三)】实现引导页，进入登录or主页面

四、【Android项目实战 | 从零开始写app(四)】Okhttp+Gson实现服务端登录验证功能

五、【Android项目实战 | 从零开始写app(五)】okhttp+gson实现服务端注册功能

六、【Android项目实战 | 从零开始写app(六)】用TabLayout+ViewPager搭建App 框架主页面底部导航栏

七、【Android项目实战 | 从零开始写app(七)】优化主页导航栏，禁用主页页面滑动切换效果

八、【Android项目实战 | 从零开始写app(八)】实现app首页广告轮播图切换和搜索跳转

九、【Android项目实战 | 从零开始写app(九)】Tablayout+ViewPager实现页面分类顶部标题页面联动切换

十、【Android项目实战 | 从零开始写app(十)】Okhttp+glide+json+ListView实现新闻模块数据的填充显示

十一、【Android项目实战 | 从零开始写app(十一)】实现app首页智慧服务页面服务分类数据的解析及点击跳转

十二、【Android项目实战 | 从零开始写app(十二)】实现app首页智慧服务&热门推荐&热门主题、新闻

十三、【Android项目实战 | 从零开始写app(十三)】实现用户中心模块清除token退出登录&信息修改等功能

十四、【Android项目实战 | 从零开始写app(十四)】实现图片发布模块 | 必知必会之调用系统相机拍照、相册

十五、【Android项目实战 | 从零开始写app(教程汇总)】Android 项目实战系列汇总、源代码

功能逻辑实现

首页

在HomeFragment 加入如下代码：

package com.example.myapp.fragment;import android.annotation.SuppressLint;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager.widget.ViewPager;import com.bumptech.glide.Glide;
import com.bumptech.glide.load.resource.bitmap.RoundedCorners;
import com.bumptech.glide.request.RequestOptions;
import com.example.myapp.R;
import com.example.myapp.activity.ApponitmentActivity;
import com.example.myapp.activity.BannerWebView;
import com.example.myapp.activity.BusActivity;
import com.example.myapp.activity.CityStateActivity;
import com.example.myapp.activity.LivingPayActivity;
import com.example.myapp.activity.NewSearchActivity;
import com.example.myapp.activity.NewsWebViewActivity;
import com.example.myapp.activity.ParkActivity;
import com.example.myapp.activity.RecommendWebView;
import com.example.myapp.activity.WeiZhangActivity;
import com.example.myapp.adapter.NewTabAdapter;
import com.example.myapp.adapter.RecommendAdapter;
import com.example.myapp.adapter.RecycleServiceAdapter;
import com.example.myapp.bean.BannerBean;
import com.example.myapp.bean.NewsBean;
import com.example.myapp.bean.RecommendBean;
import com.example.myapp.bean.ServiceBean;
import com.example.myapp.utils.APIConfig;
import com.google.android.material.tabs.TabLayout;
import com.google.gson.Gson;
import com.youth.banner.Banner;
import com.youth.banner.adapter.BannerImageAdapter;
import com.youth.banner.holder.BannerImageHolder;
import com.youth.banner.indicator.CircleIndicator;
import com.youth.banner.listener.OnBannerListener;import java.io.IOException;
import java.util.ArrayList;
import java.util.List;import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;/*** @ProjectName: MyApp* @Package: com.example.myapp.fragment* @ClassName: HomeFragment* @Description:* @Author: liyingxia* @CreateDate: 2021/4/13 21:34*/
public class HomeFragment extends BaseFragment {private static final String TAG = HomeFragment.class.getSimpleName();private TextView tv_more,tv_theme,tv_theme_title;private EditText ed_search;private Banner banner;private RecyclerView home_recyclerview,home_recyclerview1;private RecycleServiceAdapter recycleServiceAdapter;private List<ServiceBean.RowsBean> rowsBeanList;private List<RecommendBean.RowsDTO> recommendList;private RecommendAdapter recommendAdapter;private NewsBean newsBean;private NewsAdapter newsAdapter;private NewTabAdapter newTabAdapter;private TabLayout tab_layout;private ListView home_listview;private ViewPager view_pager;private OkHttpClient client = new OkHttpClient();@SuppressLint("HandlerLeak")private Handler handler = new Handler() {@Overridepublic void handleMessage(@NonNull Message msg) {super.handleMessage(msg);if (msg.what==0) {ServiceBean serviceBean = (ServiceBean) msg.obj;rowsBeanList = serviceBean.getRows();recycleServiceAdapter= new RecycleServiceAdapter(getActivity(),rowsBeanList);home_recyclerview.setLayoutManager(new GridLayoutManager(getActivity(),5));home_recyclerview.setAdapter(recycleServiceAdapter);recycleServiceAdapter.setItemClickListener(new RecycleServiceAdapter.MyItemClickListener() {@Overridepublic void onItemClick(View view, int position) {String url = APIConfig.BASE_URL+"/"+rowsBeanList.get(position).getLink();Intent intent = null;if (position==0){intent = new Intent(getActivity(), CityStateActivity.class);} else if (position==1) {intent = new Intent(getActivity(), BusActivity.class);} else if (position==2) {intent = new Intent(getActivity(), ApponitmentActivity.class);} else if (position==3) {intent = new Intent(getActivity(), LivingPayActivity.class);} else if (position==4) {intent = new Intent(getActivity(), WeiZhangActivity.class);} else if (position==5) {intent = new Intent(getActivity(), ParkActivity.class);}Bundle bundle = new Bundle();bundle.putString("title",rowsBeanList.get(position).getServiceName());bundle.putString("url",url);intent.putExtras(bundle);getActivity().startActivity(intent);}});}if (msg.what==1) {RecommendBean recommendBean = (RecommendBean) msg.obj;recommendList = recommendBean.getRows();recommendAdapter = new RecommendAdapter(getActivity(),recommendList);home_recyclerview1.setLayoutManager(new GridLayoutManager(getActivity(),2));home_recyclerview1.setAdapter(recommendAdapter);recommendAdapter.setOnItemClickListener(new RecommendAdapter.OnItemClickListener() {@Overridepublic void onItemClick(int position, List<RecommendBean.RowsDTO> list) {String url = APIConfig.BASE_URL+"/"+list.get(position).getLink();Toast.makeText(getContext(),"url详情："+url,Toast.LENGTH_LONG).show();Intent intent = new Intent(getActivity(), RecommendWebView.class);Bundle bundle = new Bundle();bundle.putString("title",list.get(position).getServiceName());bundle.putString("url",url);intent.putExtras(bundle);getActivity().startActivity(intent);}});}}};@Overridepublic View initView() {Log.i(TAG, "首页的视图被初始化了");View view = View.inflate(getContext(), R.layout.fragment_home, null);ed_search = view.findViewById(R.id.ed_search);banner = view.findViewById(R.id.banner);home_recyclerview = view.findViewById(R.id.home_recyclerview);home_recyclerview1 = view.findViewById(R.id.home_recyclerview1);home_listview = view.findViewById(R.id.home_listview);tab_layout = view.findViewById(R.id.tab_layout);view_pager = view.findViewById(R.id.view_pager);tv_more = view.findViewById(R.id.tv_more);tv_theme = view.findViewById(R.id.tv_theme);tv_theme_title = view.findViewById(R.id.tv_theme_title);return view;}/*** 解决ScrollView 导致ListView 只显示一项问题* @param listView*/public static void setListViewHeightBasedOnChildren(ListView listView){NewsAdapter newsAdapter = (NewsAdapter) listView.getAdapter();if (newsAdapter==null){return;}int totalHeight=0;// newsAdapter.getCount() 获取返回数据项的数目for (int i=0;newsAdapter.getCount()>i;i++){View listItem = newsAdapter.getView(i,null,listView);// 计算子项View的宽高listItem.measure(0,0);// 统计所有子项的总高度totalHeight+=listItem.getMeasuredHeight();}ViewGroup.LayoutParams params = listView.getLayoutParams();params.height = totalHeight+(listView.getDividerHeight()*(newsAdapter.getCount()-1));//getDividerHeight()：获取子项间分隔符占用的高度， params.height 得到整个ListView 完整显示需要的高度listView.setLayoutParams(params);}@Overridepublic void initData() {super.initData();initSearch();initBanner();getServiceData();getRecommendData();initNews();}// 顶部搜索框public void initSearch(){ed_search.setOnEditorActionListener(new TextView.OnEditorActionListener() {@Overridepublic boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {if (i== EditorInfo.IME_ACTION_SEARCH){String search = ed_search.getText().toString();Intent intent = new Intent(getActivity(), NewSearchActivity.class);intent.putExtra("search",search);startActivity(intent);/*HomeFragment fragment = new HomeFragment();Bundle bundle = new Bundle();bundle.putString("search",search);fragment.setArguments(bundle);return fragment;*/}return false;}});tv_more.setOnClickListener(new View.OnClickListener() {@SuppressLint("ResourceType")@Overridepublic void onClick(View view) {Toast.makeText(getActivity(),"查看更多点击底部进入",Toast.LENGTH_LONG).show();}});tv_theme.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {/*Intent intent = new Intent(getActivity(), ServiceActivity.class);startActivity(intent);*/Toast.makeText(getActivity(),"更多主题点击全部服务进入",Toast.LENGTH_LONG).show();}});}// Banner轮播图public void initBanner(){//网络加载图片List<BannerBean.RowsDTO> list = new ArrayList<>();list.add(new BannerBean.RowsDTO("http://124.93.196.45:10002/profile/home1.png", null));list.add(new BannerBean.RowsDTO("http://124.93.196.45:10002/profile/home2.png", null));list.add(new BannerBean.RowsDTO("http://124.93.196.45:10002/profile/home3.png", null));list.add(new BannerBean.RowsDTO("http://124.93.196.45:10002/profile/home4.png", null));banner.setAdapter(new BannerImageAdapter<BannerBean.RowsDTO>(list) {@Overridepublic void onBindView(BannerImageHolder holder, BannerBean.RowsDTO data, int position, int size) {//BannerImageHolder 图片加载自己实现Glide.with(getActivity()).load(data.getImgUrl()).apply(RequestOptions.bitmapTransform(new RoundedCorners(30))).into(holder.imageView);}}).addBannerLifecycleObserver(this)//添加生命周期观察者.setIndicator(new CircleIndicator(getActivity())).setOnBannerListener(new OnBannerListener() {@Overridepublic void OnBannerClick(Object o, int position) {//  getIntent(position);Intent intent = new Intent(getActivity(), BannerWebView.class);Bundle bundle = new Bundle();bundle.putString("url",list.get(position).getImgUrl());intent.putExtras(bundle);getActivity().startActivity(intent);}});}// 请求全部服务private void getServiceData() {Request request = new Request.Builder().url(APIConfig.BASE_URL+"/service/service/list").build();try {Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {Log.i("onFailure",e.getMessage());}@Overridepublic void onResponse(Call call, Response response) throws IOException {if (response.isSuccessful()) {final String result = response.body().string();getActivity().runOnUiThread(new Runnable() {@Overridepublic void run() {Gson gson = new Gson();ServiceBean serviceBean = gson.fromJson(result, ServiceBean.class);Message msg = new Message();msg.what=0;msg.obj=serviceBean;handler.sendMessage(msg);}});}}});} catch (Exception e) {e.printStackTrace();}}// 主题推荐public void getRecommendData(){Request request = new Request.Builder().url(APIConfig.BASE_URL+"/service/service/list?pageNum=1&pageSize=10").build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {Log.i("onFailure",e.getMessage());}@Overridepublic void onResponse(Call call, Response response) throws IOException {if (response.isSuccessful()) {final String recommend = response.body().string();getActivity().runOnUiThread(new Runnable() {@Overridepublic void run() {Gson gson = new Gson();RecommendBean recommendBean = gson.fromJson(recommend,RecommendBean.class);Message msg = new Message();msg.what=1;msg.obj=recommendBean;handler.sendMessage(msg);}});}}});}// 新闻数据public void initNews(){String[] title = {"时政","电视","旅游","视频","广播","基层"};List<Fragment> fragmentlist;fragmentlist = new ArrayList<>();fragmentlist.add(new NShizhengFragment());fragmentlist.add(new NTVFragment());fragmentlist.add(new NTravelFragment());fragmentlist.add(new NvideoFragment());fragmentlist.add(new NbrodcastFragment());fragmentlist.add(new NJicengFragment());getNewsData();newTabAdapter = new NewTabAdapter(getChildFragmentManager(),fragmentlist,title);newsAdapter = new NewsAdapter();view_pager.setAdapter(newTabAdapter);tab_layout.setupWithViewPager(view_pager);}// 新闻请求public void getNewsData(){Request request  = new Request.Builder().url(APIConfig.BASE_URL+"/press/press/list").build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {Log.i("onFailure",e.getMessage());}@Overridepublic void onResponse(Call call, Response response) throws IOException {if (response.isSuccessful()) {String result = response.body().string();Log.i("请求成功",result);Gson gson = new Gson();newsBean =  gson.fromJson(result, NewsBean.class);getActivity().runOnUiThread(new Runnable() {@Overridepublic void run() {home_listview.setAdapter(newsAdapter);setListViewHeightBasedOnChildren(home_listview);home_listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {Intent intent = new Intent(getActivity(), NewsWebViewActivity.class);ImageView new_img = view.findViewById(R.id.new_img);new_img.setDrawingCacheEnabled(Boolean.TRUE);intent.putExtra("bitmap",new_img.getDrawingCache());intent.putExtra("title",newsBean.getRows().get(i).getTitle());intent.putExtra("time",newsBean.getRows().get(i).getCreateTime());intent.putExtra("content",newsBean.getRows().get(i).getContent());/* Bundle bundle = new Bundle();bundle.putString("img",newsBean.getRows().get(i).getImgUrl());bundle.putString("title",newsBean.getRows().get(i).getTitle());bundle.putString("content",newsBean.getRows().get(i).getContent());bundle.putString("time",newsBean.getRows().get(i).getContent());intent.putExtras(bundle);*/getActivity().startActivity(intent);}});}});}}});}// 新闻适配器public class NewsAdapter extends BaseAdapter {@Overridepublic int getCount() {return newsBean!=null ? newsBean.getRows().size() : 0;}@Overridepublic Object getItem(int i) {return newsBean.getRows().get(i);}@Overridepublic long getItemId(int i) {return i;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {ViewHolder holder;if (view==null) {view = View.inflate(getContext(), R.layout.news_item,null);holder = new ViewHolder();holder.new_title = view.findViewById(R.id.new_title);holder.new_context = view.findViewById(R.id.new_context);holder.new_create = view.findViewById(R.id.new_date);holder.likeNumber = view.findViewById(R.id.likeNumber);holder.viewsNumber = view.findViewById(R.id.viewsNumber);holder.new_img = view.findViewById(R.id.new_img);view.setTag(holder);} else {holder = (ViewHolder) view.getTag();}holder.likeNumber.setText(newsBean.getRows().get(i).getLikeNumber()+"");holder.viewsNumber.setText(newsBean.getRows().get(i).getViewsNumber()+"");holder.new_create.setText(newsBean.getRows().get(i).getCreateTime());holder.new_context.setText(newsBean.getRows().get(i).getContent());holder.new_title.setText(newsBean.getRows().get(i).getTitle());String url = APIConfig.BASE_URL+newsBean.getRows().get(i).getImgUrl();Glide.with(getActivity()).load(url).into(holder.new_img);return view;}class ViewHolder{TextView new_title;TextView new_context;TextView new_create;ImageView new_img;TextView viewsNumber;TextView likeNumber;}}
}

布局

在layout 目录新建下面对应的xml文件

fragment_home.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:orientation="vertical"xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:background="#DFDFDF"xmlns:app="http://schemas.android.com/apk/res-auto"><!--顶部搜索框--><LinearLayoutandroid:layout_width="match_parent"android:layout_height="60dp"android:orientation="vertical"android:background="#1A5BDD"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="36dp"android:layout_marginLeft="24dp"android:layout_marginTop="11dp"android:layout_marginRight="24dp"android:background="@drawable/shape_search_box"android:gravity="center_horizontal"android:orientation="horizontal"><ImageViewandroid:layout_width="22dp"android:layout_height="22dp"android:layout_marginLeft="13dp"android:layout_gravity="center_vertical"android:src="@drawable/home_search_icon"/><EditTextandroid:layout_marginLeft="4dp"android:layout_width="match_parent"android:layout_height="match_parent"android:id="@+id/ed_search"android:singleLine="true"android:imeOptions="actionSearch"android:background="@null"android:hint="搜索你想看的新闻"android:textColor="#000"android:textColorHint="#737373"/></LinearLayout></LinearLayout><com.youth.banner.Bannerandroid:layout_width="match_parent"android:layout_height="150dp"android:background="#BBD9F3"android:id="@+id/banner"/><ScrollViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:fillViewport="true"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><!--服务--><androidx.recyclerview.widget.RecyclerViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:background="#B5D6F1"android:layout_margin="10dp"android:padding="10dp"android:id="@+id/home_recyclerview"/><!--主题推荐--><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="15dp"android:layout_marginRight="15dp"android:layout_marginTop="10dp"android:background="@drawable/shape_login_form"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginBottom="10dp"android:orientation="horizontal"><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="主题推荐"android:gravity="left"android:id="@+id/tv_theme_title"/><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1"android:text="热门主题 >"android:gravity="right"android:id="@+id/tv_theme"/></LinearLayout><androidx.recyclerview.widget.RecyclerViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:background="#FFFFFF"android:id="@+id/home_recyclerview1"/></LinearLayout><!--新闻--><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="15dp"android:layout_marginRight="15dp"android:layout_marginTop="10dp"android:background="@drawable/shape_login_form"android:orientation="vertical"><TextViewandroid:layout_width="match_parent"android:id="@+id/tv_more"android:layout_height="wrap_content"android:gravity="right"android:text="查看更多 >"/><com.google.android.material.tabs.TabLayoutandroid:layout_width="match_parent"android:background="@drawable/shape_login_form"app:tabGravity="fill"app:tabMode="fixed"app:tabTextColor="#121212"app:tabIndicatorColor="#F8C221"app:tabSelectedTextColor="#FFC107"android:layout_height="wrap_content"android:id="@+id/tab_layout"/><androidx.viewpager.widget.ViewPagerandroid:id="@+id/view_pager"android:layout_width="match_parent"android:layout_height="0dp"android:background="@drawable/shape_login_form"android:layout_weight="1"></androidx.viewpager.widget.ViewPager><ListViewandroid:layout_width="match_parent"android:layout_marginTop="15dp"android:layout_height="wrap_content"android:id="@+id/home_listview"/></LinearLayout></LinearLayout></ScrollView></LinearLayout>

service.item.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"android:orientation="vertical"android:layout_weight="1"android:layout_gravity="center"android:layout_marginTop="20dp"android:layout_height="wrap_content"><ImageViewandroid:background="@drawable/category_shape"android:layout_width="30dp"android:layout_height="30dp"android:layout_gravity="center"android:id="@+id/service_img"android:src="@mipmap/ic_launcher"/><TextViewandroid:layout_width="wrap_content"android:layout_height="match_parent"android:id="@+id/service_name"android:textSize="20sp"android:textColor="#131313"android:layout_gravity="center"android:text="1111"/>
</LinearLayout>

recommend_item.xml:

news_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="15dp"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginBottom="10dp"android:layout_marginLeft="15dp"android:layout_marginRight="15dp"android:background="@drawable/item_shape"android:orientation="horizontal"><ImageViewandroid:id="@+id/new_img"android:layout_width="100dp"android:layout_height="100dp"android:layout_marginRight="4dp"android:src="@mipmap/ic_launcher" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="match_parent"android:weightSum="1"android:orientation="vertical"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="0dp"android:layout_marginLeft="8dp"android:layout_weight="0.6"android:weightSum="1"android:orientation="horizontal"><TextViewandroid:id="@+id/new_title"android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"android:textSize="20dp"android:textColor="#5B4CB1"android:text="我是titl"android:gravity="center_vertical"android:singleLine="true"/><TextViewandroid:id="@+id/new_date"android:layout_width="wrap_content"android:layout_height="match_parent"android:textSize="14dp"android:layout_gravity="right"android:text="2020-01-01"android:layout_marginRight="0dp"android:gravity="center_vertical"android:singleLine="true"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="0dp"android:layout_marginLeft="8dp"android:layout_weight="0.4"android:weightSum="1"android:orientation="horizontal"><TextViewandroid:id="@+id/new_context"android:layout_width="0dp"android:layout_height="match_parent"android:layout_weight="1"android:textSize="14dp"android:text="我是新闻内容。。。。。"android:textColor="#5B4CB1"android:gravity="center_vertical"android:singleLine="true"/><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="22"android:drawableLeft="@mipmap/like"android:id="@+id/likeNumber"android:layout_marginRight="6dp" /><TextViewandroid:text="333"android:drawableLeft="@mipmap/browse"android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/viewsNumber"/></LinearLayout></LinearLayout></LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="match_parent"android:padding="10dp"android:background="#0B7CF4"android:gravity="center"android:layout_height="wrap_content"><ImageViewandroid:layout_width="100dp"android:layout_height="100dp"android:src="@mipmap/ic_launcher"android:layout_gravity="center"android:id="@+id/theme_img"/><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="智慧医疗"android:gravity="center"android:textSize="20sp"android:textColor="#FFFFFF"android:id="@+id/theme_name"/><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="智慧巴士智慧巴士智慧巴士"android:gravity="center"android:textSize="16sp"android:textColor="#fff"android:id="@+id/theme_desc"/></LinearLayout>

适配器

在adapter目录下新建下面对应adapter类：

NewsAdapter

在adapter中新建NewsAdapter类，继承baseAdapter，并重写几个方法：

package com.example.myapp.adapter;import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;import androidx.fragment.app.Fragment;import com.bumptech.glide.Glide;
import com.example.myapp.bean.NewsBean;
import com.example.myapp.R;
import com.example.myapp.utils.APIConfig;import java.util.List;/*** @ProjectName: MyApp4* @Package: com.example.myapp4.adapter* @ClassName: NewsAdapter* @Description:，* @Author: liyingxia* @CreateDate: 2021/3/31 9:20*/
public class NewsAdapter extends BaseAdapter {private List<NewsBean.RowsBean> newsBean;private Context context;private List<Fragment> fragmentList;public NewsAdapter(List<NewsBean.RowsBean> newsBean,List<Fragment> fragmentList) {this.newsBean = newsBean;this.fragmentList = fragmentList;}@Overridepublic int getCount() {// return newsBean!=null ? newsBean.getRows().size() : 0;return newsBean.size();}@Overridepublic Object getItem(int i) {return newsBean.get(i);}@Overridepublic long getItemId(int i) {return i;}@Overridepublic View getView(int i, View view, ViewGroup viewGroup) {ViewHolder holder;if (view==null) {view = View.inflate(context, R.layout.news_item,null);holder = new ViewHolder();holder.new_title = view.findViewById(R.id.new_title);holder.new_context = view.findViewById(R.id.new_context);holder.new_create = view.findViewById(R.id.new_date);holder.likeNumber = view.findViewById(R.id.likeNumber);holder.viewsNumber = view.findViewById(R.id.viewsNumber);holder.new_img = view.findViewById(R.id.new_img);view.setTag(holder);} else {holder = (ViewHolder) view.getTag();}holder.likeNumber.setText(newsBean.get(i).getLikeNumber());holder.viewsNumber.setText(newsBean.get(i).getViewsNumber());holder.new_create.setText(newsBean.get(i).getCreateTime());holder.new_context.setText(newsBean.get(i).getContent());holder.new_title.setText(newsBean.get(i).getTitle());String url = APIConfig.BASE_URL+newsBean.get(i).getImgUrl();Glide.with(context).load(url).into(holder.new_img);return view;}class ViewHolder{TextView new_title;TextView new_context;TextView new_create;ImageView new_img;TextView viewsNumber;TextView likeNumber;}
}

NewTabAdapter

这个是新闻分类标题适配器：

package com.example.myapp.adapter;import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentPagerAdapter;import java.util.List;/*** @ProjectName: MyApp4* @Package: com.example.myapp4.adapter* @ClassName: NewTabAdapter* @Description:* @Author: liyingxia* @CreateDate: 2021/3/30 18:11*/
public class NewTabAdapter extends FragmentPagerAdapter {private List<Fragment> fragmentList;private String[] titles;public NewTabAdapter(@NonNull FragmentManager fm, List<Fragment> fragmentList, String[] titles) {super(fm);this.fragmentList = fragmentList;this.titles = titles;}/*** 返回当前的fragment* @param position: 当前页面的位置* @return*/@NonNull@Overridepublic Fragment getItem(int position) {return fragmentList.get(position);}/*** fragment中的个数*/@Overridepublic int getCount() {return fragmentList.size();}/*** 返回当前的标题*/@Nullable@Overridepublic CharSequence getPageTitle(int position) {return titles[position];}
}

RecommendAdapter

展示评论数据的适配器：

package com.example.myapp.adapter;import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;import com.bumptech.glide.Glide;
import com.example.myapp.R;
import com.example.myapp.bean.RecommendBean;
import com.example.myapp.utils.APIConfig;import java.util.List;/*** @ProjectName: MyApp4* @Package: com.example.myapp4.adapter* @ClassName: RecommendAdapter* @Description:* @Author: liyingxia* @CreateDate: 2021/4/5 15:58*/
public class RecommendAdapter extends RecyclerView.Adapter<RecommendAdapter.MyViewHolder> {private List<RecommendBean.RowsDTO> list;
private LayoutInflater layoutInflater;
private Context context;// 3. 声明接口
private OnItemClickListener mOnItemClickListener;// 1. 定义接口
public interface OnItemClickListener{void onItemClick(int position, List<RecommendBean.RowsDTO> list);
}
// 2. 提供set方法给Activity/fragment调用
public void setOnItemClickListener(OnItemClickListener listener){mOnItemClickListener = listener;
}public RecommendAdapter(Context context,List<RecommendBean.RowsDTO> list) {this.list=list;this.context = context;this.layoutInflater = LayoutInflater.from(context);}@NonNull@Overridepublic MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {View view = layoutInflater.inflate(R.layout.recommend_item,parent,false);MyViewHolder myViewHolder = new MyViewHolder(view);return myViewHolder;}@Overridepublic void onBindViewHolder(@NonNull MyViewHolder holder, int position) {holder.theme_name.setText(list.get(position).getServiceName());holder.theme_desc.setText(list.get(position).getServiceDesc());Glide.with(context).load(APIConfig.BASE_URL+list.get(position).getImgUrl()).into(holder.theme_img);}@Overridepublic int getItemCount() {return list.size();}public class MyViewHolder extends RecyclerView.ViewHolder{private TextView theme_name;private TextView theme_desc;private ImageView theme_img;public MyViewHolder(@NonNull View view) {super(view);this.theme_desc = view.findViewById(R.id.theme_desc);this.theme_name = view.findViewById(R.id.theme_name);this.theme_img = view.findViewById(R.id.theme_img);// 4. 将监听传递给自定义接口view.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {if (mOnItemClickListener!=null) {mOnItemClickListener.onItemClick(getAdapterPosition(),list);}}});}}
}

RecycleServiceAdapter

显示服务数据的适配器：

package com.example.myapp.adapter;import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;import com.bumptech.glide.Glide;
import com.example.myapp.R;
import com.example.myapp.bean.ServiceBean;
import com.example.myapp.utils.APIConfig;import java.util.List;/*** @ProjectName: MyApp* @Package: com.example.myapp.adapter* @ClassName: RecycleServiceAdapter* @Description:* @Author: liyingxia* @CreateDate: 2021/4/23 10:05*/
public class RecycleServiceAdapter extends RecyclerView.Adapter<RecycleServiceAdapter.MyViewHolder> {private LayoutInflater layoutInflater;private List<ServiceBean.RowsBean> rowsBeans;private Context context;private MyItemClickListener mItemClickListener;/*** 构造方法 传入参数* @param context* @param rowsBeans*/public RecycleServiceAdapter(Context context,List<ServiceBean.RowsBean> rowsBeans) {this.rowsBeans = rowsBeans;this.context = context;layoutInflater = LayoutInflater.from(context);}@NonNull@Overridepublic MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {// 创建ViewHolder, 返回每一项的布局View view = layoutInflater.inflate(R.layout.service_item,parent,false);MyViewHolder myViewHolder = new MyViewHolder(view,mItemClickListener);return myViewHolder;}// 将数据与控件绑定@Overridepublic void onBindViewHolder(@NonNull MyViewHolder holder, int position) {holder.service_name.setText(rowsBeans.get(position).getServiceName());String url = APIConfig.BASE_URL + rowsBeans.get(position).getImgUrl();Glide.with(context).load(url).into(holder.service_img);}// 返回Item总条数@Overridepublic int getItemCount() {// return 10;return rowsBeans.size();}// 内部类，绑定控件public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {private TextView service_name;private ImageView service_img;private MyItemClickListener myListener;public MyViewHolder(@NonNull View view,MyItemClickListener myItemClickListener) {super(view);this.myListener = myItemClickListener;itemView.setOnClickListener(this);service_img = view.findViewById(R.id.service_img);service_name = view.findViewById(R.id.service_name);}@Overridepublic void onClick(View view) {if (myListener!=null) {myListener.onItemClick(view,getPosition());}}}//创建一个回调接口public interface MyItemClickListener {void onItemClick(View view,int position);}//在activity中adapter中调用此方法，将点击事件监听传递过去，并赋值给全局监听public void setItemClickListener(MyItemClickListener myItemClickListener){this.mItemClickListener = myItemClickListener;}}

跳转详情页面

关于点击跳转对应的Activity

ApponitmentActivity，BusActivity，CityStateActivity，LivingPayActivity，ParkActivity，WeiZhangActivity等基本一致，后面需要填充什么内容自己实现，好吧~
这里只放一个：

CityStateAcivity：

package com.example.myapp.activity;import android.os.Bundle;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;import com.example.myapp.R;public class CityStateActivity extends AppCompatActivity {private Toolbar toolbar;private WebView webView;private String title;private TextView service_name;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_city_state);toolbar = (Toolbar) findViewById(R.id.toolbar);webView = (WebView) findViewById(R.id.webView);service_name = findViewById(R.id.service_name);initData();}private void initData() {toolbar.setNavigationIcon(R.mipmap.top_bar_left_back);toolbar.setNavigationOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {finish();}});Bundle bundle = new Bundle();bundle = getIntent().getExtras();String url = bundle.getString("url");title  = bundle.getString("title");service_name.setText(title);webView.loadUrl("/"+url);webView.requestFocusFromTouch();webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);webView.setWebViewClient(new WebViewClient(){@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {view.loadUrl(url);return true;}});webView.getSettings().setUseWideViewPort(true);webView.getSettings().setSupportZoom(true);webView.getSettings().setLoadWithOverviewMode(true);webView.getSettings().setJavaScriptEnabled(true);}
}

关于布局

activity_apponitment，activity_bus，activity_weizhang,activity_city_state,activity_liviing_pay,activity_park等xml 文件布局，这里也是基本都一样

这里只放其中一个：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"tools:context=".activity.BusActivity"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"><androidx.appcompat.widget.Toolbarandroid:layout_width="match_parent"android:layout_height="wrap_content"android:id="@+id/toolbar"android:background="#0B84E4"/><TextViewandroid:layout_width="match_parent"android:layout_height="wrap_content"android:text="违章查询"android:textColor="#fff"android:id="@+id/service_name"android:textStyle="bold"android:textSize="20sp"android:gravity="center"android:layout_centerVertical="true"/></RelativeLayout><WebViewandroid:layout_width="match_parent"android:layout_height="200dp"android:id="@+id/webView"/>
</LinearLayout>

实体类

在bean目录下新建如下：

CommentBean：

package com.example.myapp.bean;import java.util.List;/*** @ProjectName: MyApp4* @Package: com.example.myapp4.bean* @ClassName: CommentBean* @Description:* @Author: liyingxia* @CreateDate: 2021/4/3 23:57*/
public class CommentBean  {private int total;private int code;private String msg;private List<RowsDTO> rows;public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public List<RowsDTO> getRows() {return rows;}public void setRows(List<RowsDTO> rows) {this.rows = rows;}public static class RowsDTO {private String createTime;private Object updateBy;private ParamsDTO params;private String content;private String nickName;private String userName;private String avatar;public String getCreateTime() {return createTime;}public void setCreateTime(String createTime) {this.createTime = createTime;}public Object getUpdateBy() {return updateBy;}public void setUpdateBy(Object updateBy) {this.updateBy = updateBy;}public ParamsDTO getParams() {return params;}public void setParams(ParamsDTO params) {this.params = params;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}public String getNickName() {return nickName;}public void setNickName(String nickName) {this.nickName = nickName;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getAvatar() {return avatar;}public void setAvatar(String avatar) {this.avatar = avatar;}public static class ParamsDTO {}@Overridepublic String toString() {return "RowsDTO{" +"createTime='" + createTime + '\'' +", content='" + content + '\'' +", nickName='" + nickName + '\'' +", userName='" + userName + '\'' +", avatar='" + avatar + '\'' +'}';}public RowsDTO(String createTime, String content, String nickName, String userName, String avatar) {this.createTime = createTime;this.content = content;this.nickName = nickName;this.userName = userName;this.avatar = avatar;}}
}

RecommentBean：

package com.example.myapp.bean;import java.util.List;/*** @ProjectName: MyApp* @Package: com.example.myapp.bean* @ClassName: RecommendBean* @Description:* @Author: liyingxia* @CreateDate: 2021/4/5 9:18*/
public class RecommendBean {private int total;private int code;private String msg;private List<RowsDTO> rows;public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public List<RowsDTO> getRows() {return rows;}public void setRows(List<RowsDTO> rows) {this.rows = rows;}public static class RowsDTO {/*** searchValue : null* createBy : null* createTime : 2020-10-12 18:17:23* updateBy : null* updateTime : 2020-10-19 16:56:47* remark : null* params : {}* id : 2* serviceName : 城市地铁* serviceDesc : 城市地铁路线* serviceType : 1* imgUrl : /profile/ditie.png* pid : 1* isRecommend : 1* link : metro_query/index*/private String createTime;private String updateTime;private ParamsDTO params;private int id;private String serviceName;private String serviceDesc;private String serviceType;private String imgUrl;private int pid;private int isRecommend;private String link;public String getCreateTime() {return createTime;}public void setCreateTime(String createTime) {this.createTime = createTime;}public String getUpdateTime() {return updateTime;}public void setUpdateTime(String updateTime) {this.updateTime = updateTime;}public ParamsDTO getParams() {return params;}public void setParams(ParamsDTO params) {this.params = params;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getServiceName() {return serviceName;}public void setServiceName(String serviceName) {this.serviceName = serviceName;}public String getServiceDesc() {return serviceDesc;}public void setServiceDesc(String serviceDesc) {this.serviceDesc = serviceDesc;}public String getServiceType() {return serviceType;}public void setServiceType(String serviceType) {this.serviceType = serviceType;}public String getImgUrl() {return imgUrl;}public void setImgUrl(String imgUrl) {this.imgUrl = imgUrl;}public int getPid() {return pid;}public void setPid(int pid) {this.pid = pid;}public int getIsRecommend() {return isRecommend;}public void setIsRecommend(int isRecommend) {this.isRecommend = isRecommend;}public String getLink() {return link;}public void setLink(String link) {this.link = link;}public static class ParamsDTO {}}
}

ResponseBean：

package com.example.myapp.bean;/*** @ProjectName: MyApp4* @Package: com.example.myapp4.bean* @ClassName: ResponseBean* @Description: 请求响应结果* @Author: liyingxia* @CreateDate: 2021/4/3 19:31*/public class ResponseBean {/*** msg : 操作成功* code : 200*/private String msg;private String code;public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public String getCode() {return code;}public void setCode(String code) {this.code = code;}@Overridepublic String toString() {return "ResponseBean{" +"msg='" + msg + '\'' +", code=" + code +'}';}
}

ServiceBean：

package com.example.myapp.bean;import java.util.List;/*** @ProjectName: MyApp* @Package: com.example.myapp.bean* @ClassName: ServiceBean* @Description:* @Author: liyingxia* @CreateDate: 2021/4/23 10:03*/
public class ServiceBean {private int total;private int code;private String msg;private List<RowsBean> rows;public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public int getCode() {return code;}public void setCode(int code) {this.code = code;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public List<RowsBean> getRows() {return rows;}public void setRows(List<RowsBean> rows) {this.rows = rows;}public static class RowsBean {/*** searchValue : null* createBy : null* createTime : 2020-10-12 18:17:23* updateBy : null* updateTime : 2020-10-19 16:56:47* remark : null* params : {}* id : 2* serviceName : 城市地铁* serviceDesc : 城市地铁路线* serviceType : 1* imgUrl : /profile/ditie.png* pid : 1* isRecommend : 1* link : metro_query/index*/private Object searchValue;private Object createBy;private String createTime;private Object updateBy;private String updateTime;private Object remark;private ParamsBean params;private int id;private String serviceName;private String serviceDesc;private String serviceType;private String imgUrl;private int pid;private int isRecommend;private String link;public Object getSearchValue() {return searchValue;}public void setSearchValue(Object searchValue) {this.searchValue = searchValue;}public Object getCreateBy() {return createBy;}public void setCreateBy(Object createBy) {this.createBy = createBy;}public String getCreateTime() {return createTime;}public void setCreateTime(String createTime) {this.createTime = createTime;}public Object getUpdateBy() {return updateBy;}public void setUpdateBy(Object updateBy) {this.updateBy = updateBy;}public String getUpdateTime() {return updateTime;}public void setUpdateTime(String updateTime) {this.updateTime = updateTime;}public Object getRemark() {return remark;}public void setRemark(Object remark) {this.remark = remark;}public ParamsBean getParams() {return params;}public void setParams(ParamsBean params) {this.params = params;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getServiceName() {return serviceName;}public void setServiceName(String serviceName) {this.serviceName = serviceName;}public String getServiceDesc() {return serviceDesc;}public void setServiceDesc(String serviceDesc) {this.serviceDesc = serviceDesc;}public String getServiceType() {return serviceType;}public void setServiceType(String serviceType) {this.serviceType = serviceType;}public String getImgUrl() {return imgUrl;}public void setImgUrl(String imgUrl) {this.imgUrl = imgUrl;}public int getPid() {return pid;}public void setPid(int pid) {this.pid = pid;}public int getIsRecommend() {return isRecommend;}public void setIsRecommend(int isRecommend) {this.isRecommend = isRecommend;}public String getLink() {return link;}public void setLink(String link) {this.link = link;}public static class ParamsBean {}public RowsBean(String serviceName, String serviceDesc, String imgUrl, String link) {this.serviceName = serviceName;this.serviceDesc = serviceDesc;this.imgUrl = imgUrl;this.link = link;}@Overridepublic String toString() {return "RowsBean{" +"serviceName='" + serviceName + '\'' +", serviceDesc='" + serviceDesc + '\'' +", imgUrl='" + imgUrl + '\'' +", link='" + link + '\'' +'}';}}
}

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