TabLayout与ViewPager联用
布局：
主页：
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
android:layout_width="match_parent"
android:layout_height="50dp"
app:tabGravity="center"
app:tabIndicatorColor="#ff0000"
app:tabMode="scrollable"
app:tabSelectedTextColor="#ff0000"
app:tabTextColor="#00ff00">
android:layout_width="match_parent"
android:layout_height="match_parent">
副页：
android:layout_height="match_parent"
android:orientation="vertical">
android:layout_width="match_parent"
android:layout_height="match_parent">
代码：
MainActivity主页tablayout的使用
package com.example.a12_tablayout_viewpager;
import android.support.design.widget.TabLayout;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import java.util.ArrayList;
import java.util.List;
/**
* tablayout结合着viewPager来使用
*/
public class MainActivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager viewPager;
private List
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tabLayout = (TabLayout) findViewById(R.id.tab_layout);
viewPager = (ViewPager) findViewById(R.id.view_pager);
/**
* top(头条，默认),shehui(社会),guonei(国内),guoji(国际),yule(娱乐),tiyu(体育)junshi(军事)
* ,keji(科技),caijing(财经),shishang(时尚)
*/
//tab的标题
list = new ArrayList<>();
list.add("头条");
list.add("社会");
list.add("国内");
list.add("国际");
list.add("娱乐");
list.add("体育");
list.add("军事");
list.add("科技");
list.add("财经");
list.add("时尚");
//Viewpager要展示页面...设置适配器
viewPager.setAdapter(new FragmentPagerAdapter(getSupportFragmentManager()) {
//得到当前页的标题,,,也就是设置当前页面显示的标题是tab对应的标题
@Override
public CharSequence getPageTitle(int position) {
return list.get(position);
}
@Override
public Fragment getItem(int position) {
//一般我们在这个位置对比一下标题是什么,,,然后返回对应的fragment
NewsFragment newsFragment = new NewsFragment();
Bundle bundle = new Bundle();
//Fragment fragment = null;
if (list.get(position).equals("头条")){
//fragment = new TouTiaoFragment();
bundle.putString("name","top");
}else if (list.get(position).equals("社会")){
bundle.putString("name","shehui");
}else if (list.get(position).equals("国内")){
bundle.putString("name","guonei");
}else if (list.get(position).equals("国际")){
bundle.putString("name","guoji");
}else if (list.get(position).equals("娱乐")){
bundle.putString("name","yule");
}else if (list.get(position).equals("体育")){
bundle.putString("name","tiyu");
}else if (list.get(position).equals("军事")){
bundle.putString("name","junshi");
}else if (list.get(position).equals("科技")){
bundle.putString("name","keji");
}else if (list.get(position).equals("财经")){
bundle.putString("name","caijing");
}else if (list.get(position).equals("时尚")){
bundle.putString("name","shishang");
}
newsFragment.setArguments(bundle);
return newsFragment;
}
@Override
public int getCount() {
return list.size();
}
});
//tablayout要与viewpager关联
tabLayout.setupWithViewPager(viewPager);
}
}
Adapter适配器：
package com.example.a12_tablayout_viewpager;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.List;
/**
* @author Dash
* @date 2017/9/11
* @description:
*/
public class MyAdapter extends BaseAdapter {
Context context;
List
public MyAdapter(Context context, List
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int i) {
return list.get(i);
}
@Override
public long getItemId(int i) {
return i;
}
@Override
public View getView(int i, View view, ViewGroup viewGroup) {
if (view == null){
view = View.inflate(context,android.R.layout.simple_list_item_1,null);
}
TextView textView = (TextView) view.findViewById(android.R.id.text1);
textView.setText(list.get(i).getTitle());
return view;
}
}
NewsFragment的使用
package com.example.a12_tablayout_viewpager;
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 com.google.gson.Gson;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;
/**
* @author Dash
* @date 2017/9/11
* @description:
*/
public class NewsFragment extends Fragment {
private ListView listView;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.news_layout, container, false);
listView = (ListView) view.findViewById(R.id.list_view);
return view;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Bundle bundle = getArguments();
String string = bundle.getString("name", "top");
getDataFromNet(string);
}
private void getDataFromNet(final String string) {
AsyncTask
@Override
protected String doInBackground(Void... voids) {
String path = "http://v.juhe.cn/toutiao/index?type="+string+"&key=597b4f9dcb50e051fd725a9ec54d6653";
try {
URL url = new URL(path);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
//设置
connection.setRequestMethod("GET");
connection.setReadTimeout(5000);
connection.setConnectTimeout(5000);
//获取
int responseCode = connection.getResponseCode();
if (responseCode == 200){
InputStream inputStream = connection.getInputStream();
String json = streamToString(inputStream,"utf-8");
return json;
}
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
@Override
protected void onPostExecute(String json) {
Gson gson = new Gson();
DataDataBean dataDataBean = gson.fromJson(json, DataDataBean.class);
List
MyAdapter myAdapter = new MyAdapter(getActivity(), list);
listView.setAdapter(myAdapter);
}
};
asyncTask.execute();
}
private String streamToString(InputStream inputStream,String charset) {
try {
InputStreamReader inputStreamReader = new InputStreamReader(inputStream,charset);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String s = null;
StringBuilder builder = new StringBuilder();
while ((s = bufferedReader.readLine()) != null){
builder.append(s);
}
bufferedReader.close();
return builder.toString();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}