微信API实例（OKHttp+PullToRefreshListView+WebView综合应用）

主页面xml:

 <include layout="@layout/title_wechat"></include>    <com.handmark.pulltorefresh.library.PullToRefreshListView        android:id="@+id/pu_lv"        android:layout_width="match_parent"        app:ptrMode="both"        android:layout_height="match_parent">    </com.handmark.pulltorefresh.library.PullToRefreshListView>    **需要添加pulltorefresh依赖库**

详情页面xml:

 <WebView        android:id="@+id/wv"        android:layout_width="match_parent"        android:layout_height="match_parent"></WebView>

自定义标题栏布局xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:background="#eb413d"    android:layout_height="50dp">    <TextView        android:layout_width="wrap_content"        android:layout_height="match_parent"        android:text="WeChat新闻推送"        android:textColor="#fce6e6"        android:textSize="25sp"        android:layout_gravity="center"        android:gravity="center_vertical"/></LinearLayout>

MainAcvitity。Java

public class MainActivity extends AppCompatActivity {    private PullToRefreshListView pu_lv;    private List<WeChatNews> list;    public static final int  PAGE=1;    public static final int  LOADING=2;    private MyHandle handle=null;    public int page =1;    private WechatAdapter adapter=null;    private String url="http://api.tianapi.com/qiwen/?key=4bd737c35d23201f3f97b7eeb4f043d3&num=10&page=";    private String json=null;    private String url1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        pu_lv= (PullToRefreshListView) findViewById(R.id.pu_lv);        url1 = url + String.valueOf(page);        pu_lv.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {                page=1;                getData();            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {                    page+=1;                url1 = url + String.valueOf(page);                getData();            }        });        list=new ArrayList<>();        handle=new MyHandle();        getData();        adapter=new WechatAdapter(this,list);        adapter.notifyDataSetChanged();        pu_lv.setAdapter(adapter);        pu_lv.onRefreshComplete();        pu_lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                WeChatNews news=list.get(position-1);                String url=news.getUrl();                Intent intent=new Intent(view.getContext(),NewsActivity.class);                intent.putExtra("content",url);                startActivity(intent);            }        });    }    /**     * 获取数据     */    private void getData(){        OkHttpClient client=new OkHttpClient();        Request request=new Request.Builder().url(url1).build();       client.newCall(request).enqueue(new Callback() {           @Override           public void onFailure(Call call, IOException e) {           }           @Override           public void onResponse(Call call, Response response) throws IOException {               final String str= response.body().string();               json=str;               runOnUiThread(new Runnable() {                   @Override                   public void run() {                       if(page==1){                           handle.sendMessage(handle.obtainMessage(PAGE,json));                       }else {                           handle.sendMessage(handle.obtainMessage(page,json));                       }                       Thread.interrupted();//中断线程，防止下拉不更新，上拉内容重复                   }               });           }       });    }    /**     * 解析json数据，构建展示的数据源     */    private List<WeChatNews> parseJosn(String json){           List<WeChatNews>  list1=new ArrayList<>();        if(TextUtils.isEmpty(json)){            return list1;        }        try {            JSONObject object=new JSONObject(json);            JSONArray array=object.getJSONArray("newslist");            int code=object.getInt("code");            if(code==200){                for (int i = 0;array!=null &&i < array.length(); i++) {                    JSONObject obj=array.getJSONObject(i);                    WeChatNews news=new WeChatNews();                    news.setTitle(obj.getString("title"));                    news.setDescription(obj.getString("description"));                    news.setCtime(obj.getString("ctime"));                    news.setPicUrl(obj.getString("picUrl"));                    news.setUrl(obj.getString("url"));                    list1.add(news);                }            }        } catch (JSONException e) {            e.printStackTrace();        }        return list1;    }    class MyHandle extends Handler{        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            switch (msg.what){                case PAGE:                    list=parseJosn(msg.obj.toString());                    adapter.setList(list);                    adapter.notifyDataSetChanged();                    break;                case LOADING:                    list.addAll(parseJosn(msg.obj.toString()));                    adapter.notifyDataSetChanged();                    break;                default:                    list.addAll(parseJosn(msg.obj.toString()));                    adapter.notifyDataSetChanged();                    break;            }            pu_lv.onRefreshComplete();        }    }

详情页面NewsAcvitity。Java

public class NewsActivity extends AppCompatActivity {    private WebView wv;    private String url_content;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_news);        wv= (WebView) findViewById(R.id.wv);        wv.setWebViewClient(new MyClient());        Intent intent=getIntent();        url_content=intent.getStringExtra("content");        wv.loadUrl(url_content);        wv.getSettings().setBuiltInZoomControls(true);        wv.getSettings().setDisplayZoomControls(false);//隐藏缩放按钮//        wv.getSettings().setJavaScriptEnabled(true);//        wv.getSettings().setSupportZoom(true);        //自适应屏幕//          设置webview推荐使用的窗口，设置为true。第二个方法是设置webview加载的页面的模式，也设置为true。//            这方法可以让你的页面适应手机屏幕的分辨率，完整的显示在屏幕上，可以放大缩小。/        wv.getSettings().setUseWideViewPort(true);        wv.getSettings().setLoadWithOverviewMode(true);        //设置缓存模式        wv.getSettings().setAppCacheEnabled(true);        wv.getSettings().setDatabaseEnabled(true);        wv.getSettings().setDomStorageEnabled(true);        wv.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);    }    class MyClient extends WebViewClient{        @Override        public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {            if(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP){                //当Sdk版本大于21时才能使用此方法                view.loadUrl(request.getUrl().toString());            }            return super.shouldOverrideUrlLoading(view, request);        }        @Override        public boolean shouldOverrideUrlLoading(WebView view, String url) {            view.loadUrl(url_content);            return super.shouldOverrideUrlLoading(view, url);        }    }