Pulltorefresh上拉加载下拉刷新
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主界面布局
<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.DrawerLayout 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:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.bwie.tablayoutdemo.MainActivity"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <android.support.design.widget.TabLayout android:id="@+id/tabs" android:layout_width="match_parent" android:layout_height="wrap_content" app:tabIndicatorColor="@color/colorPrimary" app:tabMode="scrollable" app:tabSelectedTextColor="@color/red" app:tabTextAppearance="@android:style/TextAppearance.Holo.Small" app:tabIndicatorHeight="0dp" app:tabContentStart="5dp" app:textAllCaps="true" app:tabTextColor="@color/black" /> <android.support.v4.view.ViewPager android:id="@+id/vp_view" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout> <ListView android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="start" android:background="#fff" android:id="@+id/lvLeft" /></android.support.v4.widget.DrawerLayout>Pager_item
<?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"> <com.handmark.pulltorefresh.library.PullToRefreshListView xmlns:ptr="http://schemas.android.com/apk/res-auto" android:id="@+id/pull_refresh_list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:cacheColorHint="#000000" android:divider="#19000000" android:dividerHeight="4dp" android:fadingEdge="none" android:fastScrollEnabled="false" android:footerDividersEnabled="false" android:headerDividersEnabled="false" android:smoothScrollbar="true" ptr:ptrAnimationStyle="rotate" ptr:ptrHeaderTextColor="#ffffff" ptr:ptrHeaderSubTextColor="#00ffff" ptr:ptrHeaderBackground="@null" ptr:ptrDrawable="@mipmap/ic_launcher"/></LinearLayout>list_item0
<?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" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:text="TextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/textView" android:layout_marginLeft="10dp" /></LinearLayout>list_item1
<?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" android:layout_width="match_parent" android:layout_height="match_parent"> <ImageView android:layout_width="100dp" android:layout_height="100dp" android:layout_marginLeft="5dp" app:srcCompat="@mipmap/ic_launcher" android:id="@+id/imageView" /> <TextView android:text="TextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/textView" android:layout_marginLeft="10dp" /></LinearLayout>主界面代码
package com.bwie.tablayoutdemo;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.v4.widget.DrawerLayout;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.ListView;import android.widget.Toast;import com.bwie.myFragments.ChannelFragment;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity { private TabLayout mTablayout; private ViewPager mViewPager; private ListView lvLeft; private DrawerLayout drawerLayout; private String[] menu = {"收藏","设置","钱包","反馈"}; private String[] channels = {"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/Android/10/1", "http://gank.io/api/data/iOS/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1", "http://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1" }; private List<String> mTitleList = new ArrayList<>();//页卡标题集合// private ChannelFragment view1, view2, view3, view4, view5,view6, view7, view8, view9, view10;//页卡视图 private List<ChannelFragment> mViewList = new ArrayList<>();//页卡视图集合 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); drawerLayout = (DrawerLayout) findViewById(R.id.activity_main); mViewPager = (ViewPager) findViewById(R.id.vp_view); mTablayout = (TabLayout) findViewById(R.id.tabs); lvLeft = (ListView) findViewById(R.id.lvLeft); for(int i=0;i<channels.length;i++){ //创建栏目的fragment ChannelFragment fragment = new ChannelFragment(); Bundle b = new Bundle(); b.putString("name", channels[i]);//传递名字 b.putString("url", urlS[i]); fragment.setArguments(b); //收集fragment mViewList.add(fragment); //给tablayout添加tab选项卡 mTablayout.addTab(mTablayout.newTab().setText(channels[i]));//添加tab选项卡 } FragmentManager fm = getSupportFragmentManager(); MyFragmentPagerAdapter mAdapter = new MyFragmentPagerAdapter(fm, mViewList); mViewPager.setAdapter(mAdapter);//给ViewPager设fsf置适配器 mTablayout.setupWithViewPager(mViewPager);//将TabLayout和ViewPager关联起来。 mTablayout.setTabsFromPagerAdapter(mAdapter);//给Tabs设置适配器// int count = mTablayout.getTabCount();//// for (int j=0;j<count;j++){// TabLayout.Tab tab= mTablayout.getTabAt(j);// tab.setIcon(R.mipmap.ic_launcher);// }// mTablayout.addTab(mTablayout.newTab().setText(channels[0]).setIcon(R.mipmap.ic_launcher));// mTablayout.getTabAt(3).select(); //给侧滑中的listview配置数据 initDataForListViewLeft(); } private void initDataForListViewLeft() { // ArrayAdapter<String> lvLeftAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,menu); lvLeft.setAdapter(lvLeftAdapter); //添加监听 lvLeft.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(MainActivity.this,menu[position],Toast.LENGTH_SHORT).show(); drawerLayout.closeDrawer(lvLeft); //做相关的业务,,比如：让viewpager联动滑动到对应的pager// mViewPager.setCurrentItem(position); } }); } class MyFragmentPagerAdapter extends FragmentPagerAdapter{ private List<ChannelFragment> mViewList; public MyFragmentPagerAdapter(FragmentManager fm, List<ChannelFragment> mViewList) { super(fm); this.mViewList = mViewList; } @Override public Fragment getItem(int position) { return mViewList.get(position); } @Override public int getCount() { return mViewList.size(); } @Override public String getPageTitle(int position) { return channels[position]; } }// //ViewPager适配器// class MyPagerAdapter extends PagerAdapter {// private List<ChannelFragment> mViewList;//// public MyPagerAdapter(List<ChannelFragment> mViewList) {// this.mViewList = mViewList;// }//// @Override// public int getCount() {// return mViewList.size();//页卡数// }//// @Override// public boolean isViewFromObject(View view, Object object) {// return view == object;//官方推荐写法// }//// @Override// public Object instantiateItem(ViewGroup container, int position) {// container.addView(mViewList.get(position));//添加页卡// return mViewList.get(position);// }//// @Override// public void destroyItem(ViewGroup container, int position, Object object) {// container.removeView(mViewList.get(position));//删除页卡// }//// @Override// public CharSequence getPageTitle(int position) {// return mTitleList.get(position);//页卡标题// }//// }}ChannelFragment
package com.bwie.myFragments;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.bwei.beans.Result;import com.bwei.beans.SuperClass;import com.bwei.utils.NetWorkUtils;import com.bwie.adapters.MyPullToListViewAdapter;import com.bwie.tablayoutdemo.R;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshListView;import java.util.ArrayList;/** * Created by Administrator on 2017/9/14. */public class ChannelFragment extends Fragment{ private String name; private String news_url; private PullToRefreshListView pullToRefreshListView; private MyPullToListViewAdapter adapter; private ArrayList<Result> results; @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); Bundle bundle = getArguments(); name = (String) bundle.get("name"); news_url = (String) bundle.get("url"); } @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.pager_item, null); pullToRefreshListView = (PullToRefreshListView) view.findViewById(R.id.pull_refresh_list); //刚进来，网络请求数据，配置数据 refreshData(); //配置刷新，加载 pullToRefreshListView.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener<ListView>() { @Override public void onRefresh(PullToRefreshBase<ListView> refreshView) { refreshData(); } }); pullToRefreshListView.setOnLastItemVisibleListener(new PullToRefreshBase.OnLastItemVisibleListener() { @Override public void onLastItemVisible() { loadMoreDate(); } }); return view; } public void refreshData(){ new AsyncTask<String,Integer,String>(){ @Override protected String doInBackground(String... params) { String json = new NetWorkUtils().getJsonByUrlConnection(news_url); return json; } @Override protected void onPostExecute(String s) { super.onPostExecute(s); //解析json SuperClass superClass = new Gson().fromJson(s, SuperClass.class); results = superClass.getResults(); adapter = new MyPullToListViewAdapter(getActivity(), results); pullToRefreshListView.setAdapter(adapter); pullToRefreshListView.onRefreshComplete(); } }.execute(); } public void loadMoreDate(){ new AsyncTask<String,Integer,String>(){ @Override protected String doInBackground(String... params) { String json = new NetWorkUtils().getJsonByUrlConnection(news_url); return json; } @Override protected void onPostExecute(String s) { super.onPostExecute(s); //解析json SuperClass superClass = new Gson().fromJson(s, SuperClass.class); results.addAll(superClass.getResults()); adapter.notifyDataSetChanged(); } }.execute(); }}工具类
package com.bwei.utils;import java.io.IOException;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;/** * Created by Administrator on 2017/9/7. */public class NetWorkUtils { public String getJsonByUrlConnection(String jsonUrl){ String str = ""; try { URL url = new URL(jsonUrl); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setConnectTimeout(5000); conn.setReadTimeout(5000); int resCode = conn.getResponseCode(); if(resCode == 200){ InputStream is = conn.getInputStream(); byte[] b = new byte[1024]; int len = 0; while((len=is.read(b)) != -1){ str += new String(b,0,len); } } } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return str; }}适配器
package com.bwie.adapters;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.bwei.beans.Result;import com.bwie.tablayoutdemo.R;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.ArrayList;/** * Created by Administrator on 2017/9/20. */public class MyPullToListViewAdapter extends BaseAdapter { private Context context; private ArrayList<Result> results; public MyPullToListViewAdapter(Context context, ArrayList<Result> results) { this.context = context; this.results = results; } @Override public int getCount() { return results.size(); } @Override public Object getItem(int position) { return null; } @Override public long getItemId(int position) { return 0; } //多条目配置 @Override public int getViewTypeCount() { return 2; } @Override public int getItemViewType(int position) { Result result = results.get(position); if(result.getUrl() !="" && result.getUrl()!= null){//有图片，用有图片的布局 return 1; }else{//没有图片，用没有图片的布局 return 0; } } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder0 holder0; ViewHolder1 holder1; int i = getItemViewType(position); if(i==0){ if(convertView == null){ holder0 = new ViewHolder0(); convertView = View.inflate(context, R.layout.list_item0,null); holder0.who = (TextView) convertView.findViewById(R.id.textView); convertView.setTag(holder0); }else{ holder0 = (ViewHolder0) convertView.getTag(); } Result r = results.get(position); holder0.who.setText(r.getWho()); }else if(i==1){ if(convertView == null){ holder1 = new ViewHolder1(); convertView = View.inflate(context, R.layout.list_item1,null); holder1.who = (TextView) convertView.findViewById(R.id.textView); holder1.img = (ImageView) convertView.findViewById(R.id.imageView); convertView.setTag(holder1); }else{ holder1 = (ViewHolder1) convertView.getTag(); } Result r = results.get(position); holder1.who.setText(r.getWho()); ImageLoader.getInstance().displayImage(r.getUrl(), holder1.img); } return convertView; } class ViewHolder0{ TextView who; } class ViewHolder1{ TextView who; ImageView img; }}Myapp
package com.bwei.myapp;import android.app.Application;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;/** * Created by Administrator on 2017/9/20. */public class MyApp extends Application { @Override public void onCreate() { super.onCreate(); //imageloader初始化 ImageLoaderConfiguration configuration = ImageLoaderConfiguration.createDefault(this); ImageLoader.getInstance().init(configuration); }}Bean
package com.bwei.beans;import java.util.ArrayList;/** * Created by Administrator on 2017/9/20. */public class SuperClass { private String error; private ArrayList<Result> results; public SuperClass(ArrayList<Result> results, String error) { this.results = results; this.error = error; } public String getError() { return error; } public void setError(String error) { this.error = error; } public ArrayList<Result> getResults() { return results; } public void setResults(ArrayList<Result> results) { this.results = results; } @Override public String toString() { return "SuperClass{" + "error='" + error + '\'' + ", results=" + results + '}'; }}Bean2
package com.bwei.beans;/** * Created by Administrator on 2017/9/20. */public class Result { private String desc; private String publishedAt; private String url; private String who; public Result(String desc, String publishedAt, String url, String who) { this.desc = desc; this.publishedAt = publishedAt; this.url = url; this.who = who; } public String getDesc() { return desc; } public void setDesc(String desc) { this.desc = desc; } public String getPublishedAt() { return publishedAt; } public void setPublishedAt(String publishedAt) { this.publishedAt = publishedAt; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getWho() { return who; } public void setWho(String who) { this.who = who; } @Override public String toString() { return "Result{" + "desc='" + desc + '\'' + ", publishedAt='" + publishedAt + '\'' + ", url='" + url + '\'' + ", who='" + who + '\'' + '}'; }}阅读全文
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