com.ds.kaixin.GetFriendListTask.java Source code

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Here is the source code for com.ds.kaixin.GetFriendListTask.java

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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ds.kaixin;

import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

public class GetFriendListTask extends AsyncTask<Object, Void, Integer> {
    private static final String TAG = "GetFriendListTask";
    private static final String RESTAPI_INTERFACE_GETFRIENDLIST = "/friends/me.json";
    private ArrayList<FriendInfo> resultContainer;
    private Handler handler;

    @SuppressWarnings("unchecked")
    protected Integer doInBackground(Object... params) {
        if (params == null || params.length == 0 || params.length != 6) {
            handler.sendEmptyMessage(Constant.RESULT_FAILED_ARG_ERR);
            return 0;
        }

        String start = (String) params[0];
        String number = (String) params[1];
        Kaixin kaixin = (Kaixin) params[2];
        handler = (Handler) params[3];
        resultContainer = (ArrayList<FriendInfo>) params[4];
        Context context = (Context) params[5];

        Bundle bundle = new Bundle();
        bundle.putString("start", start);
        bundle.putString("num", number);
        bundle.putString("fields", "uid,name,gender,logo50,birthday");

        try {
            String jsonResult = kaixin.request(context, RESTAPI_INTERFACE_GETFRIENDLIST, bundle, "GET");
            if (jsonResult == null) {
                handler.sendEmptyMessage(Constant.RESULT_FAILED_NETWORK_ERR);
            } else {
                KaixinError kaixinError = Util.parseRequestError(jsonResult);
                if (kaixinError != null) {
                    Message msg = Message.obtain();
                    msg.what = Constant.RESULT_FAILED_REQUEST_ERR;
                    msg.obj = kaixinError;
                    handler.sendMessage(msg);
                } else {
                    ArrayList<FriendInfo> friendList = getFriendInfos(jsonResult);
                    if (null != friendList) {
                        resultContainer.addAll(friendList);
                    }
                    if (resultContainer.size() > 0) {
                        handler.sendEmptyMessage(Constant.RESULT_GET_FRIENDS_OK);
                    } else {
                        handler.sendEmptyMessage(Constant.RESULT_GET_FRIENDS_ZERO);
                    }
                }
            }
        } catch (MalformedURLException e1) {
            Log.e(TAG, "", e1);
            handler.sendEmptyMessage(Constant.RESULT_FAILED_MALFORMEDURL_ERR);
        } catch (JSONException e1) {
            Log.e(TAG, "", e1);
            handler.sendEmptyMessage(Constant.RESULT_FAILED_JSON_PARSE_ERR);
        } catch (IOException e1) {
            Log.e(TAG, "", e1);
            handler.sendEmptyMessage(Constant.RESULT_FAILED_NETWORK_ERR);
        } catch (Exception e1) {
            Log.e(TAG, "", e1);
            handler.sendEmptyMessage(Constant.RESULT_FAILED);
        }

        return 1;
    }

    private ArrayList<FriendInfo> getFriendInfos(String jsonResult) throws JSONException {
        if (jsonResult == null || jsonResult.length() == 0) {
            return null;
        }
        JSONObject friendInfos = new JSONObject(jsonResult);
        if (friendInfos == null) {
            return null;
        }

        JSONArray jsonArray = friendInfos.getJSONArray("users");
        int len = jsonArray == null ? 0 : jsonArray.length();
        if (len == 0) {
            return null;
        }

        ArrayList<FriendInfo> friendList = new ArrayList<FriendInfo>(len);
        JSONObject jsonObj = null;
        for (int i = 0; i < len; i++) {
            jsonObj = jsonArray.getJSONObject(i);

            String uid = jsonObj.getString("uid");
            String name = jsonObj.getString("name");
            String gender = jsonObj.getString("gender");
            String logo = jsonObj.getString("logo50");
            String birthday = jsonObj.getString("birthday");
            Log.i(TAG, String.format("uid:%s name:%s gender:%s logo50:%s birthday:%s", uid, name, gender, logo,
                    birthday));
            friendList.add(new FriendInfo(uid, name, gender, logo, birthday));
        }
        return friendList;
    }

    protected void onPostExecute(Integer result) {
    }
}