依赖:
compile 'com.android.support:design:26+'
compile 'com.google.code.gson:gson:2.6.2'
compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'
权限:
<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"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
MainActivity主页面:
package com.bwie.wyy.myapplication;
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 android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager vp;
String[] tabs = {"推荐","热点","体育","娱乐","社会","汽车","教育","财经","科技","游戏"};
private String[] urlS = {
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/2",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/3",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/4",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/5",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/6",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/7",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/8",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/9",
"http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/10"
};
private ArrayList fragments;
MyVpAdapter myVpAdapter;
FragmentManager fm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//得到组件
tabLayout = (TabLayout) findViewById(R.id.tablayout);
vp = (ViewPager) findViewById(R.id.vp);
fm = getSupportFragmentManager();
//创建集合,存储vp的page页(fragment)
fragments = new ArrayList();
//给tablayout设置tab页
for(int i=0;i<tabs.length;i++){
FragmentForVp fragmentForVp = new FragmentForVp();
Bundle b = new Bundle();
b.putString("data",tabs[i]);
b.putString("dataUrl",urlS[i]);
fragmentForVp.setArguments(b);
fragments.add(fragmentForVp);
tabLayout.addTab(tabLayout.newTab().setText(tabs[i]));
}
//给vp配置page页
myVpAdapter = new MyVpAdapter(fm);
vp.setAdapter(myVpAdapter);
//tablayout和vp的关联
tabLayout.setupWithViewPager(vp);
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
Toast.makeText(MainActivity.this,tab.getText(),Toast.LENGTH_SHORT).show();
if(tab.getText().equals("推荐")){
//请求推荐的网络数据
}else if(tab.getText().equals("热点")){
//请求热点的网络数据
}else{
}
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {}
@Override
public void onTabReselected(TabLayout.Tab tab) {}
});
}
class MyVpAdapter extends FragmentPagerAdapter{
public MyVpAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return fragments.get(position);
}
@Override
public int getCount() {
return fragments.size();
}
@Override
public CharSequence getPageTitle(int position) {
return tabs[position];
}
}
}
activity_main主页面布局:
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"
android:id="@+id/activity_main"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" tools:context="com.bwie.wyy.myapplication.MainActivity">
<android.support.design.widget.TabLayout
android:id="@+id/tablayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:tabMode="scrollable"
app:tabSelectedTextColor="@android:color/holo_red_light"
app:tabIndicatorColor="@android:color/holo_red_light"
app:tabTextAppearance="@android:style/TextAppearance.Large"
/>
<android.support.v4.view.ViewPager
android:id="@+id/vp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/tablayout"/>
RelativeLayout>
FragmentForVp页面:
package com.bwie.wyy.myapplication;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;
import com.google.gson.Gson;
import java.util.List;
public class FragmentForVp extends Fragment {
private TextView tv;
private String dataUrl;
private ListView newsLv;
private String data;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_layout,container,false);
newsLv = (ListView) view.findViewById(R.id.newsLv);
Bundle arguments = getArguments();//获得通过setArgument传的值
dataUrl = getArguments().getString("dataUrl");//得到数据url
//通过dataUrl请求网络数据,解析展示在newsLv上,扩展:实现下拉上拉效果
new AsyncTask(){
@Override
protected String doInBackground(String... params) {
NetWorkUtils netWorkUtils = new NetWorkUtils();
data = netWorkUtils.getURL(dataUrl);
return data;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Gson gson = new Gson();
SuperClass superClass = gson.fromJson(s, SuperClass.class);
List list = superClass.getResults();
MyAdapter adapter = new MyAdapter(getActivity(), list);
newsLv.setAdapter(adapter);
}
}.execute();
return view;
}
}
fragment_layout页面布局:
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<TextView
android:id="@+id/tv"
android:textSize="48dp"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<ListView
android:id="@+id/newsLv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
LinearLayout>
NetWorkUtils工具类:
package com.bwie.wyy.myapplication;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class NetWorkUtils {
public static String getURL(String parm){
String data="";
try {
URL url = new URL(parm);
HttpURLConnection ht = (HttpURLConnection) url.openConnection();
ht.setConnectTimeout(5000);
ht.setReadTimeout(5000);
int responseCode = ht.getResponseCode();
if(responseCode==200){
InputStream inputStream = ht.getInputStream();
byte[] b=new byte[1024];
int len=0;
while((len=inputStream.read(b))!=-1){
String s = new String(b, 0, len);
data+=s;
}
}
} catch (Exception e) {
e.printStackTrace();
}
return data;
}
}
MyAdapter listview适配器:
package com.bwie.wyy.myapplication;
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 com.nostra13.universalimageloader.core.ImageLoader;
import java.util.List;
public class MyAdapter extends BaseAdapter {
private Context context;
private List list;
public MyAdapter(Context context, List list) {
this.context = context;
this.list = list;
}
public int getCount() {
return list.size();
}
public Object getItem(int position) {
return list.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView==null){
convertView=View.inflate(context,R.layout.item,null);
holder=new ViewHolder();
holder.t1= (TextView) convertView.findViewById(R.id.t1);
holder.t2= (TextView) convertView.findViewById(R.id.t2);
holder.t3= (TextView) convertView.findViewById(R.id.t3);
holder.t4= (TextView) convertView.findViewById(R.id.t4);
holder.t5= (TextView) convertView.findViewById(R.id.t5);
holder.img= (ImageView) convertView.findViewById(R.id.img);
convertView.setTag(holder);
}else{
holder= (ViewHolder) convertView.getTag();
}
holder.t1.setText(list.get(position).getType());
holder.t2.setText(list.get(position).getCreatedAt());
holder.t3.setText(list.get(position).getPublishedAt());
holder.t4.setText(list.get(position).getSource());
holder.t5.setText(list.get(position).getUrl());
String url=list.get(position).getUrl();
ImageLoader.getInstance().displayImage(url,holder.img);
return convertView;
}
class ViewHolder{
TextView t1,t2,t3,t4,t5;
ImageView img;
}
}
Loader ImagLoader全局配置类:(在清单文件中 name=".mapp")
package com.bwie.wyy.myapplication;
import android.app.Application;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
public class Loader extends Application {
@Override
public void onCreate() {
super.onCreate();
ImageLoaderConfiguration build = new ImageLoaderConfiguration.Builder(this).build();
ImageLoader.getInstance().init(build);
}
}
SuperClass News Bean类:
package com.bwie.wyy.myapplication;
import java.util.List;
public class SuperClass {
private List results;
public List getResults() {
return results;
}
public void setResults(List results) {
this.results = results;
}
class Bean{
private String createdAt;
private String publishedAt;
private String type;
private String source;
private String url;
public String getCreatedAt() {
return createdAt;
}
public void setCreatedAt(String createdAt) {
this.createdAt = createdAt;
}
public String getPublishedAt() {
return publishedAt;
}
public void setPublishedAt(String publishedAt) {
this.publishedAt = publishedAt;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getSource() {
return source;
}
public void setSource(String source) {this.source = source;}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
}
}
item布局:
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/t1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/t2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/t3"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/t4"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/t5"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageView
android:id="@+id/img"
android:layout_width="200sp"
android:layout_height="200sp" />
LinearLayout>