Java tutorial
/* * Copyright 2012 The Android Open Source Project * * 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.ijiaban.uitls; import com.google.android.gms.auth.GoogleAuthUtil; import com.ijiaban.fragment.MainFragment; import com.ijiaban.u2bplayer.bean.v3.PageBean; import com.ijiaban.u2bplayer.common.bean.OwnerPlists; import com.ijiaban.u2bplayer.common.bean.SubItem; import com.ijiaban.u2bplayer.common.dao.v3.CommonDao; import com.ijiaban.u2bplayer.common.dao.v3.OwnerplaylistDao; import com.ijiaban.u2bplayer.common.dao.v3.SubPlaylistDao; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader; import com.nostra13.universalimageloader.core.ImageLoaderConfiguration; import android.app.AlertDialog; import android.os.AsyncTask; import android.util.Log; import android.widget.Toast; import org.json.JSONException; import org.json.JSONObject; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.ArrayList; import java.util.List; /** * Display personalized greeting. This class contains boilerplate code to consume the token but * isn't integral to getting the tokens. */ public abstract class AbstractGetNameTask extends AsyncTask<Void, Void, Void> { private static final String TAG = "TokenInfoTask"; private static final String NAME_KEY = "name"; protected MainFragment mFragment; // private String test = "https://www.googleapis.com/youtube/v3/playlists?part=snippet&mine=true&maxResults=50&key=AIzaSyANOmRGAxTbMfx1j5dadEVk_PqoVhf8f9c&access_token="; // private String mychannels = "https://www.googleapis.com/youtube/v3/channels?part=snippet&mine=true&key=AIzaSyANOmRGAxTbMfx1j5dadEVk_PqoVhf8f9c&access_token="; // private String subschannels = "https://www.googleapis.com/youtube/v3/subscriptions?part=snippet&mine=true&maxResults=50&access_token="; // private String channeldetails = "https://www.googleapis.com/youtube/v3/channelSections?part=contentDetails&channelId="; //activities protected String mScope; protected String mEmail; private String channelId = "UCpko_-a4wgz2u_DgDgd9fqA"; // private ImageLoader imageloader; /** * mainfragmentchannelid * @param id */ // @Override // public void onDingyueSelected(String id) { // channelId =id; // } AbstractGetNameTask(MainFragment fragment, String email, String scope) { this.mFragment = fragment; this.mScope = scope; this.mEmail = email; } @Override protected Void doInBackground(Void... params) { try { fetchNameFromProfileServer(); fetchImageFromProfileServer(); fetchSubsChannelsfrmpprofileServer(); } catch (IOException ex) { onError("Following Error occured, please try again. " + ex.getMessage(), ex); } catch (JSONException e) { onError("Bad response: " + e.getMessage(), e); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } private void fetchSubsChannelsfrmpprofileServer() throws Exception { String token = fetchToken(); if (token == null) { // error has already been handled in fetchToken() return; } channelId = MainFragment.CHANNNEL_ID; String path = subschannels + token; String ssd = channeldetails + channelId + "&access_token=" + token; String json = CommonDao.getDataFromServer(path); String channeljson = CommonDao.getDataFromServer(ssd); List<String> channelplaylistids = new ArrayList<String>(); channelplaylistids = CommonDao.StringtoArray(channeljson); PageBean bean = CommonDao.StringToPageBean(json); List<SubItem> subitems = new ArrayList<SubItem>(); subitems = SubPlaylistDao.getplaylist(bean); mFragment.listsubitemlist(subitems); } private void fetchIMGFromProfileSever() throws IOException, JSONException { String token = fetchToken(); if (token == null) { return; } URL url2 = new URL(test + token); URL url3 = new URL(channeldetails + token); HttpURLConnection con2 = (HttpURLConnection) url2.openConnection(); int sc2 = con2.getResponseCode(); if (sc2 == HttpURLConnection.HTTP_OK) { InputStream is2 = con2.getInputStream(); String image = getImage(readResponse(is2)); Toast.makeText(mFragment.getActivity(), image, 5000).show(); is2.close(); return; } else if (sc2 == 401) { GoogleAuthUtil.invalidateToken(mFragment.getActivity(), token); onError("Server auth error, please try again.", null); return; } else { onError("Server returned the following error code: " + sc2, null); return; } } protected void onError(String msg, Exception e) { if (e != null) { Log.e(TAG, "Exception: ", e); } mFragment.show(msg); // will be run in UI thread } /** * Get a authentication token if one is not available. If the error is not recoverable then * it displays the error message on parent activity. */ protected abstract String fetchToken() throws IOException; /** * Contacts the user info server to get the profile of the user and extracts the first name * of the user from the profile. In order to authenticate with the user info server the method * first fetches an access token from Google Play services. * @throws IOException if communication with user info server failed. * @throws JSONException if the response from the server could not be parsed. */ private void fetchNameFromProfileServer() throws IOException, JSONException { String token = fetchToken(); if (token == null) { // error has already been handled in fetchToken() return; } URL url = new URL("https://www.googleapis.com/oauth2/v1/userinfo?access_token=" + token); HttpURLConnection con = (HttpURLConnection) url.openConnection(); int sc = con.getResponseCode(); if (sc == HttpURLConnection.HTTP_OK) { InputStream is = con.getInputStream(); String detail = readResponse(is); JSONObject jb = new JSONObject(detail); String name = getFirstName(detail); String image = getImage(detail); mFragment.show("Welcome " + name + "!"); mFragment.displayimage(image); is.close(); return; } else if (sc == 401) { GoogleAuthUtil.invalidateToken(mFragment.getActivity(), token); onError("Server auth error, please try again.", null); Log.i(TAG, "Server auth error: " + readResponse(con.getErrorStream())); return; } else { onError("Server returned the following error code: " + sc, null); return; } } private void fetchImageFromProfileServer() throws Exception { String token = fetchToken(); if (token == null) { // error has already been handled in fetchToken() return; } String path = test + token; String json = CommonDao.getDataFromServer(path); PageBean bean = CommonDao.StringToPageBean(json); List<OwnerPlists> ownerplists = new ArrayList<OwnerPlists>(); ownerplists = OwnerplaylistDao.getPlaylist(bean); mFragment.listplaylist(ownerplists); } /** * Reads the response from the input stream and returns it as a string. * jsonString * { "id": "118128481591363949098", "name": "Xp Lee", "given_name": "Xp", "family_name": "Lee", "link": "https://plus.google.com/118128481591363949098", "picture": "https://lh3.googleusercontent.com/-LFld6F-jurc/AAAAAAAAAAI/AAAAAAAAAA8/QKveWJwLYyw/photo.jpg", "gender": "male", "locale": "zh-CN" } */ private static String readResponse(InputStream is) throws IOException { ByteArrayOutputStream bos = new ByteArrayOutputStream(); byte[] data = new byte[2048]; int len = 0; while ((len = is.read(data, 0, data.length)) >= 0) { bos.write(data, 0, len); } return new String(bos.toByteArray(), "UTF-8"); } /** * Parses the response and returns the first name of the user. * string json * @throws JSONException if the response is not JSON or if first name does not exist in response */ private String getFirstName(String jsonResponse) throws JSONException { JSONObject profile = new JSONObject(jsonResponse); return profile.getString(NAME_KEY); } private String getImage(String jsonResponse) throws JSONException { JSONObject obj = new JSONObject(jsonResponse); return obj.getString("picture"); } }