Android模仿新浪微博（主页微博，评论界面）

主页微博：

获取当前登录用户及其所关注（授权）用户的最新微博接口：http://open.weibo.com/wiki/2/statuses/friends_timeline

代码详解：
1.异步get请求数据，由于数据中带图片，故需要多线程管理，参数设置按照接口一一对应。
2.请求的数据respone数据解析后，单条保存WeiboInfo数据域集合中，然后add到ArrayList中。
3.获取的数据，按布局加载到自定义Listview中（后面讲解），该自定义Listview具有滑动下拉刷新的功能。
4.刷新页面数据的方法，使用 adapater.notifyDataSetChanged()释放listview里的原数据，然后异步线程通知主线程重新获取数据。
5.GetDataTask类继承AsyncTask，以响应滑动下拉事件。改事件与手动按钮的刷新方法完全一致。

/** * Created by D&LL on 2016/7/20. * 主页模块 */public class HomeActivity extends Activity {    private OAuth oAuth = null;    private RequestParams params;    private String TAG = "HomeActivity";    private Tools tools;    private WeiboAdapter adapater = null;    // 保存需要显示的多条微博数据    public ArrayList<WeiBoInfo> weiboList = null;    public static PullToRefreshListView listView;    private ImageButton refresh;    private TextView user_name;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.home);        listView = (PullToRefreshListView) findViewById(R.id.Msglist);        user_name = (TextView) findViewById(R.id.user_name);        refresh = (ImageButton) findViewById(R.id.refresh);        init();        //按钮刷新微博        refresh.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                refresh();            }        });     //listview下拉刷新        listView.setOnRefreshListener(new PullToRefreshListView.OnRefreshListener() {            @Override            public void onRefresh() {                new GetDataTask(HomeActivity.this, 0).execute();            }            @Override            public void onLoadMore() {            }        });    }    /**     * 加载首页数据     */    private void init() {        tools = Tools.getInstance();        getUserName();        //获取微博数据        weiboList = tools.getWeiboContent(this);        if (weiboList != null) {            // 创建一个Adapter设置ListView中的每项Item项数据            adapater = new WeiboAdapter(HomeActivity.this, weiboList);            listView.setAdapter(adapater);        } else {            adapater = new WeiboAdapter(HomeActivity.this, null);            listView.setAdapter(adapater);        }    }    /**     * 用于标题栏显示用户名     */    public void getUserName() {        if (oAuth == null) {            oAuth = OAuth.getOAuth(this);        }        params = new RequestParams();        params.put("access_token", oAuth.getAccessToken());        params.put("uid", oAuth.getUid());        WeiboRestClient.get("2/users/show.json", params, new JsonHttpResponseHandler() {            @Override            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {                try {                    String screen_name = response.getString("screen_name");                    user_name.setText(screen_name);                } catch (JSONException e) {                    e.printStackTrace();                }            }            @Override            public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {                super.onFailure(statusCode, headers, responseString, throwable);                Log.i(TAG, "获取失败");            }        });    }    Handler handler = new Handler() {        public void handleMessage(android.os.Message msg) {            //通知数据改变，更新listview            adapater.weiboList = (ArrayList<WeiBoInfo>) msg.obj;            adapater.notifyDataSetChanged();        }    };    //刷新页面数据的方法    public void refresh() {        adapater.weiboList.clear();        adapater.notifyDataSetChanged();        ArrayList<WeiBoInfo> new_contentList = tools.getWeiboContent(HomeActivity.this);        Message msg = handler.obtainMessage();        msg.obj = new_contentList;        handler.sendMessage(msg);        if (new_contentList != null) {            // 创建一个Adapter设置ListView中的每项Item项数据            adapater = new WeiboAdapter(HomeActivity.this, new_contentList);            listView.setAdapter(adapater);        } else {            adapater = new WeiboAdapter(HomeActivity.this, null);            listView.setAdapter(adapater);        }    }    private class GetDataTask extends AsyncTask<Void, Void, String[]> {        private Context context;        private int index;        public GetDataTask(Context context, int index) {            this.context = context;            this.index = index;        }        @Override        protected String[] doInBackground(Void... params) {            return new String[0];        }        @Override        protected void onPostExecute(String[] result) {            if (index == 0) {                refresh();                SimpleDateFormat format = new SimpleDateFormat(                        "yyyy年MM月dd日  HH:mm");                String date = format.format(new Date());                // Call onRefreshComplete when the list has been refreshed.                listView.onRefreshComplete(date);            }            super.onPostExecute(result);        }    }}

使用httpClient get方法获得所需数据，对获得的json数据逐条解析，由于原创微博与转发微博json数据格式不同，故需要先判断解析不同部分然后处理相同部分。
使用 thread.start()释放异步线程的数据，以获得所需数据。
此处包含一个时间处理类（后面详解），计算微博发出时间距现在的时长。
该方法位于Tools类中

    /**     * 自定义异步线程加载微博     * 并对微博评论数据进行处理     * 对线程进行处理可以获得返回值     * @param context     * @return     */    public ArrayList<WeiBoInfo> getWeiboContent(Context context) {        if (oAuth == null) {            oAuth = oAuth.getOAuth(context);        }        class MyThread extends Thread {            @Override            public void run() {                String url = "https://api.weibo.com/2/statuses/friends_timeline.json";                List<NameValuePair> params = new ArrayList<>();                params.add(new BasicNameValuePair("access_token", oAuth.getAccessToken()));                params.add(new BasicNameValuePair("count", "100"));                String param = URLEncodedUtils.format(params, "UTF-8");                HttpGet get = new HttpGet(url + "?" + param);                httpClient = new DefaultHttpClient();                try {                    HttpResponse responses = httpClient.execute(get);                    if (responses.getStatusLine().getStatusCode() == 200) {                        String r = EntityUtils.toString(responses.getEntity());                        JSONObject response = new JSONObject(r);                        //对获得的100条微博json数据遍历解析，放到对象集合中，然后添加到ArrayList里                        for (int i = 0; i < 100; i++) {                            WeiBoInfo weiBoInfo = new WeiBoInfo();                            JSONArray statuses = response.getJSONArray("statuses");                            JSONObject world = statuses.getJSONObject(i);                            JSONObject user = world.getJSONObject("user");                            //转发的微博                            if (world.has("retweeted_status")) {                                JSONObject retweeted_status = world.getJSONObject("retweeted_status");                                JSONObject retweeted_user = retweeted_status.getJSONObject("user");                                String retweeted_name = "@" + retweeted_user.getString("screen_name")                                        + ":";                                String text = world.getString("text") + ":\n" +                                        retweeted_name +                                        retweeted_status.getString("text");                                JSONArray img = retweeted_status.getJSONArray("pic_urls");                                weiBoInfo.setText(text);                                Boolean haveImg = false;                                if (img != null) {                                    haveImg = true;                                    String[] pics = new String[img.length()];                                    for (int n = 0; n < img.length(); n++) {                                        JSONObject pic = img.getJSONObject(n);                                        pics[n] = pic.getString("thumbnail_pic");                                    }                                    weiBoInfo.setImage_context(pics);                                }                                weiBoInfo.setHaveImage(haveImg);                            } else {                                // 获得weibo内容                                String text = world.getString("text");                                JSONArray img = world.getJSONArray("pic_urls");                                weiBoInfo.setText(text);                                Boolean haveImg = false;                                if (img != null) {                                    haveImg = true;                                    String[] pics = new String[img.length()];                                    for (int n = 0; n < img.length(); n++) {                                        JSONObject pic = img.getJSONObject(n);                                        pics[n] = pic.getString("thumbnail_pic");                                    }                                    weiBoInfo.setImage_context(pics);                                }                                weiBoInfo.setHaveImage(haveImg);                            }                            // 获得发weibo 用户的名称                            String name = user.getString("screen_name");                            // 获得发weibo 用户的头像url链接                            String userIcon = user.getString("avatar_large");                            // 获得发weibo的时间                            String time = world.getString("created_at");                            Date startDate = new Date(time);                            SimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");                            time = sd.format(startDate);                            String nowtime = new DateUtils().getInterval(time);                            if (weiboList == null) {                                // 创建存储每条微博的集合                                weiboList = new ArrayList<>();                            }                            //数据设置                            weiBoInfo.setUserName(name);                            weiBoInfo.setTime(nowtime);                            weiBoInfo.setUserIcon(userIcon);                            // 将单条微博数据设置到集合中                            weiboList.add(weiBoInfo);                          /*  Log.i(TAG, time);                            Log.i(TAG, world.getString("text"));                            Log.i(TAG, user.getString("avatar_large"));*/                        }                    }                } catch (IOException e) {                    e.printStackTrace();                } catch (JSONException e) {                    e.printStackTrace();                }            }        }        //处理异步线程，以获得weibilist的返回值        MyThread thread = new MyThread();        thread.start();        try {            thread.join();        } catch (InterruptedException e) {            e.printStackTrace();        }        return weiboList;    }

HomeActivity布局home.xml 改布有一个标题栏(包含手动刷新按钮，和显示用户名的TextView），一个自定义的ListView。

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:id="@+id/ly_main_weixin"              android:layout_width="match_parent"              android:layout_height="match_parent"              android:background="@drawable/backgroundimage"              android:orientation="vertical">    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"                    android:layout_width="fill_parent"                    android:layout_height="45dp"                    android:background="@drawable/title_bar">        <ImageButton            android:id="@+id/refresh"            android:layout_width="60dp"            android:layout_height="match_parent"            android:layout_alignParentStart="true"            android:layout_alignParentTop="true"            android:layout_marginStart="10dp"            android:background="@drawable/refresh"/>        <TextView            android:id="@+id/user_name"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerInParent="true"            android:textColor="#fff"            android:textSize="20sp"            android:textStyle="bold"/>    </RelativeLayout>    <study.sinatest.util.PullToRefreshListView        android:id="@+id/Msglist"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_margin="0px"        android:background="#BBFFFFFF"        android:cacheColorHint="#00000000"        android:divider="@drawable/link"        android:dividerHeight="5px"        android:fastScrollEnabled="true"        android:focusable="true"/></LinearLayout>

评论

获取当前登录用户的最新评论包括接收到的与发出的接口：http://open.weibo.com/wiki/2/comments/timeline

该界面功能与主页微博功能除了数据处理略有不同，其余完全一致，不再详细叙述，有疑问请参考代码。