xUtile获取数据+TabLayout

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效果图

代码:

main_activity.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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"    tools:context="bw.com.day22_demo.MainActivity">    <android.support.design.widget.TabLayout        android:layout_width="match_parent"        android:layout_height="60dp"        android:id="@+id/tab_layout_id"        app:tabSelectedTextColor="@color/colorAccent"        app:tabIndicatorColor="@color/colorAccent"        />    <android.support.v4.view.ViewPager        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/view_page_id"        android:layout_below="@id/tab_layout_id"        /></RelativeLayout>

fragment_my.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="bw.com.day22_demo.MyFragment">    <ListView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/lv_id"/></FrameLayout>

item_lv.xml

<?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:layout_height="match_parent">    <ImageView        android:layout_width="200dp"        android:layout_height="200dp"        android:id="@+id/iv"        android:src="@mipmap/ic_launcher"/>    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="title"        android:id="@+id/tv_id"        android:textSize="20sp"        android:layout_margin="10dp"/></LinearLayout>

MyApp.java

import android.app.Application;import org.xutils.x;/** * Created by Administrator on 2017/11/23. */public class MyApp extends Application {    @Override    public void onCreate() {        super.onCreate();        //初始化xUtils        x.Ext.init(this);        x.Ext.setDebug(true);    }}

清单文件

<uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><application    android:name=".MyApp"    android:allowBackup="true"    android:icon="@mipmap/ic_launcher"    android:label="@string/app_name"    android:roundIcon="@mipmap/ic_launcher_round"    android:supportsRtl="true"    android:theme="@style/AppTheme">    <activity android:name=".MainActivity">        <intent-filter>            <action android:name="android.intent.action.MAIN" />            <category android:name="android.intent.category.LAUNCHER" />        </intent-filter>    </activity></application>

MainActivity.java

import android.os.Bundle;import android.support.design.widget.TabLayout;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentPagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private TabLayout mTb;    private List<String> titles = new ArrayList<>();    private ViewPager mVp;    private List<MyFragment> data;    private MyAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        //初始化数据        data = new ArrayList<>();        for(int i = 0;i<3;i++)        {            MyFragment fragment = new MyFragment();            //向fragment 中传入参数            Bundle bundle = new Bundle();            bundle.putInt("tabId",i);            fragment.setArguments(bundle);            data.add(fragment);        }        //初始化标题        titles.add("头条");        titles.add("娱乐");        titles.add("体育");        //初始化适配器        adapter = new MyAdapter(getSupportFragmentManager());        //设置适配器        mVp.setAdapter(adapter);        //关联ViewPager 和 TabLayout        mTb.setupWithViewPager(mVp);        //为TabLayout 设置监听器        setTitle("头条");//设置Activity 标题的方法        mTb.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {            @Override            public void onTabSelected(TabLayout.Tab tab) {                String tabName = tab.getText().toString();                setTitle(tabName);            }            @Override            public void onTabUnselected(TabLayout.Tab tab) {}            @Override            public void onTabReselected(TabLayout.Tab tab) {}        });    }    //自定义的Fragment 适配器    class MyAdapter extends FragmentPagerAdapter    {        public MyAdapter(FragmentManager fm) {            super(fm);        }        @Override        public Fragment getItem(int position) {            return data.get(position);        }        @Override        public int getCount() {            return data.size();        }        //设置标题        @Override        public CharSequence getPageTitle(int position) {            return titles.get(position);        }    }    //初始化数据    private void initView() {        mTb = (TabLayout) findViewById(R.id.tab_layout_id);        mVp = (ViewPager) findViewById(R.id.view_page_id);    }}

MyFragment.java

import android.app.ProgressDialog;import android.os.Bundle;import android.support.v4.app.Fragment;import android.support.v7.app.AlertDialog;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import com.google.gson.Gson;import org.xutils.common.Callback;import org.xutils.http.RequestParams;import org.xutils.image.ImageOptions;import org.xutils.x;import java.util.List;public class MyFragment extends Fragment {    private ListView mLv;    private List<NewsInfo.ParamzBean.FeedsBean> data;    private MyListAdapter adapter;    private String path;    private ProgressDialog pd;    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {        View  view = inflater.inflate(R.layout.fragment_my, container, false);        mLv = (ListView) view.findViewById(R.id.lv_id);        //1, 初始化进度条对话框        pd = new ProgressDialog(getContext());        //2, 设置 图标, 标题, 内容        pd.setIcon(R.mipmap.ic_launcher);        pd.setTitle("提示");        pd.setMessage("正在加载,请稍后.....");        pd.setCancelable(false);//是否可撤销        //3, 显示进度条对话框        pd.show();        //获取传入的参数tabId  -- 指示当前应该显示的页面        int tabId = getArguments().getInt("tabId");        //确认加载的地址        switch (tabId)        {            case 0:                path = "http://litchiapi.jstv.com/api/GetFeeds?column=0&PageSize=20&pageIndex=1&val=100511D3BE5301280E0992C73A9DEC41";                break;            case 1:                path = "http://litchiapi.jstv.com/api/GetFeeds?column=7&PageSize=20&pageIndex=1&val=100511D3BE5301280E0992C73A9DEC41";                break;            case 2:                path = "http://litchiapi.jstv.com/api/GetFeeds?column=6&PageSize=20&pageIndex=1&val=100511D3BE5301280E0992C73A9DEC4";                break;        }        //向网络获取数据        RequestParams params = new RequestParams(path);        x.http().get(params, new Callback.CommonCallback<String>() {            @Override            public void onSuccess(String s) {                //证明数据获取成功了, 可以解析数据                //gson 解析数据                NewsInfo newsInfo = new Gson().fromJson(s,NewsInfo.class);                data = newsInfo.getParamz().getFeeds();                //设置适配器                adapter = new MyListAdapter(data);                mLv.setAdapter(adapter);                // 4, 向网络加载数据, 如果数据加载成功了, 进度条对话框消失                pd.dismiss();            }            @Override            public void onError(Throwable throwable, boolean b) { }            @Override            public void onCancelled(CancelledException e) {}            @Override            public void onFinished() {}        });        //为ListView 添加点击事件监听器, 显示当前选中的内容        mLv.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                AlertDialog.Builder builder = new AlertDialog.Builder(getContext());                builder.setIcon(R.mipmap.ic_launcher);                builder.setTitle("提示");                builder.setMessage(data.get(position).getData().getSubject());                builder.show();            }        });        return view;    }    //自定义的ListView 的适配器    class MyListAdapter extends BaseAdapter    {        private List<NewsInfo.ParamzBean.FeedsBean> data;        public MyListAdapter(List<NewsInfo.ParamzBean.FeedsBean> data)        {            this.data = data;        }        @Override        public int getCount() {            return data.size();        }        @Override        public Object getItem(int position) {            return data.get(position);        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            ViewHolder viewHolder;            if(convertView==null)            {                convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_lv,parent,false);                viewHolder = new ViewHolder();                 viewHolder.iv = (ImageView) convertView.findViewById(R.id.iv);                viewHolder.tv = (TextView) convertView.findViewById(R.id.tv_id);                convertView.setTag(viewHolder);            }            else            {                viewHolder = (ViewHolder) convertView.getTag();            }            //设置内容            viewHolder.tv.setText(data.get(position).getData().getSubject());            ImageOptions options = new ImageOptions.Builder()                    .setFailureDrawableId(R.mipmap.ic_launcher)                    .setLoadingDrawableId(R.mipmap.ic_launcher)                    .setUseMemCache(true)                    .build();            x.image().bind(viewHolder.iv,                            "http://litchiapi.jstv.com"+data.get(position).getData().getCover(),                            options);            return convertView;        }        class ViewHolder        {            ImageView iv;            TextView tv;        }    }}

newsInfo.java -- gsonFromant创建的实体类

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