Java tutorial
/* * Myfeedle - Android Social Networking Widget * Copyright (C) 2013 Mohd Shafiq Mat Daud * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * Mohd Shafiq Mat Daud avantgarde280@gmail.com */ package com.shafiq.myfeedle.core; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.CheckBox; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.RelativeLayout; import android.widget.SimpleAdapter; import com.google.ads.AdRequest; import com.google.ads.AdSize; import com.google.ads.AdView; import com.shafiq.myfeedle.core.Myfeedle.Accounts; import com.shafiq.myfeedle.core.Myfeedle.Entities; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import static com.shafiq.myfeedle.core.Myfeedle.CHATTER; import static com.shafiq.myfeedle.core.Myfeedle.FACEBOOK; import static com.shafiq.myfeedle.core.Myfeedle.FACEBOOK_BASE_URL; import static com.shafiq.myfeedle.core.Myfeedle.FACEBOOK_FRIENDS; import static com.shafiq.myfeedle.core.Myfeedle.FACEBOOK_PICTURE; import static com.shafiq.myfeedle.core.Myfeedle.FOURSQUARE; import static com.shafiq.myfeedle.core.Myfeedle.GOOGLEPLUS; import static com.shafiq.myfeedle.core.Myfeedle.IDENTICA; import static com.shafiq.myfeedle.core.Myfeedle.LINKEDIN; import static com.shafiq.myfeedle.core.Myfeedle.MYSPACE; import static com.shafiq.myfeedle.core.Myfeedle.PRO; import static com.shafiq.myfeedle.core.Myfeedle.Saccess_token; import static com.shafiq.myfeedle.core.Myfeedle.Sdata; import static com.shafiq.myfeedle.core.Myfeedle.Sid; import static com.shafiq.myfeedle.core.Myfeedle.Sname; import static com.shafiq.myfeedle.core.Myfeedle.Stags; import static com.shafiq.myfeedle.core.Myfeedle.TWITTER; public class SelectFriends extends ListActivity { private static final String TAG = "SelectFriends"; private HttpClient mHttpClient; private List<HashMap<String, String>> mFriends = new ArrayList<HashMap<String, String>>(); private List<String> mSelectedFriends = new ArrayList<String>(); private long mAccountId = Myfeedle.INVALID_ACCOUNT_ID; private String mToken = null; private String mSecret = null; private int mService; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // allow posting to multiple services if an account is defined // allow selecting which accounts to use // get existing comments, allow liking|unliking those comments setContentView(R.layout.friends); if (!getPackageName().toLowerCase().contains(PRO)) { AdView adView = new AdView(this, AdSize.BANNER, MyfeedleTokens.GOOGLE_AD_ID); ((LinearLayout) findViewById(R.id.ad)).addView(adView); adView.loadAd(new AdRequest()); } Intent intent = getIntent(); if ((intent != null) && intent.hasExtra(Accounts.SID)) { mAccountId = intent.getLongExtra(Accounts.SID, Myfeedle.INVALID_ACCOUNT_ID); String[] tags = intent.getStringArrayExtra(Stags); if (tags != null) { for (String tag : tags) mSelectedFriends.add(tag); } } else finish(); mHttpClient = MyfeedleHttpClient.getThreadSafeClient(getApplicationContext()); registerForContextMenu(getListView()); setResult(RESULT_CANCELED); } @Override protected void onResume() { super.onResume(); loadFriends(); } private final SimpleAdapter.ViewBinder mViewBinder = new SimpleAdapter.ViewBinder() { @Override public boolean setViewValue(View view, Object data, String textRepresentation) { // if (view.getId() == R.id.profile) { // BitmapDownloadTask task = new BitmapDownloadTask((ImageView) view, mHttpClient); // DownloadedDrawable downloadedDrawable = new DownloadedDrawable(task); // ((ImageView) view).setImageDrawable(downloadedDrawable); // task.execute(textRepresentation); // return true; // } else if (view.getId() == R.id.selected) { ((CheckBox) view).setChecked(mSelectedFriends.contains(textRepresentation)); return true; } else return false; } }; @Override protected void onListItemClick(ListView list, final View view, int position, final long id) { super.onListItemClick(list, view, position, id); // add to/remove from return list, update check mark if (mFriends.size() > position) { HashMap<String, String> friend = mFriends.get(position); String esid = friend.get(Entities.ESID); boolean checked = false; if (mSelectedFriends.contains(esid)) mSelectedFriends.remove(esid); else { mSelectedFriends.add(esid); checked = true; } ((CheckBox) ((RelativeLayout) view).getChildAt(0)).setChecked(checked); String[] friends = new String[mSelectedFriends.size()]; for (int i = 0, l = friends.length; i < l; i++) friends[i] = mSelectedFriends.get(i); Intent i = new Intent(); i.putExtra(Accounts.SID, mAccountId); i.putExtra(Stags, friends); setResult(RESULT_OK, i); } } protected void loadFriends() { mFriends.clear(); // SimpleAdapter sa = new SimpleAdapter(SelectFriends.this, mFriends, R.layout.friend, new String[]{Entities.PROFILE, Entities.FRIEND, Entities.ESID}, new int[]{R.id.profile, R.id.name, R.id.selected}); SimpleAdapter sa = new SimpleAdapter(SelectFriends.this, mFriends, R.layout.friend, new String[] { Entities.FRIEND, Entities.ESID }, new int[] { R.id.name, R.id.selected }); setListAdapter(sa); final ProgressDialog loadingDialog = new ProgressDialog(this); final AsyncTask<Long, String, Boolean> asyncTask = new AsyncTask<Long, String, Boolean>() { @Override protected Boolean doInBackground(Long... params) { boolean loadList = false; MyfeedleCrypto myfeedleCrypto = MyfeedleCrypto.getInstance(getApplicationContext()); // load the session Cursor account = getContentResolver().query(Accounts.getContentUri(SelectFriends.this), new String[] { Accounts.TOKEN, Accounts.SECRET, Accounts.SERVICE }, Accounts._ID + "=?", new String[] { Long.toString(params[0]) }, null); if (account.moveToFirst()) { mToken = myfeedleCrypto.Decrypt(account.getString(0)); mSecret = myfeedleCrypto.Decrypt(account.getString(1)); mService = account.getInt(2); } account.close(); String response; switch (mService) { case TWITTER: break; case FACEBOOK: if ((response = MyfeedleHttpClient.httpResponse(mHttpClient, new HttpGet( String.format(FACEBOOK_FRIENDS, FACEBOOK_BASE_URL, Saccess_token, mToken)))) != null) { try { JSONArray friends = new JSONObject(response).getJSONArray(Sdata); for (int i = 0, l = friends.length(); i < l; i++) { JSONObject f = friends.getJSONObject(i); HashMap<String, String> newFriend = new HashMap<String, String>(); newFriend.put(Entities.ESID, f.getString(Sid)); newFriend.put(Entities.PROFILE, String.format(FACEBOOK_PICTURE, f.getString(Sid))); newFriend.put(Entities.FRIEND, f.getString(Sname)); // need to alphabetize if (mFriends.isEmpty()) mFriends.add(newFriend); else { String fullName = f.getString(Sname); int spaceIdx = fullName.lastIndexOf(" "); String newFirstName = null; String newLastName = null; if (spaceIdx == -1) newFirstName = fullName; else { newFirstName = fullName.substring(0, spaceIdx++); newLastName = fullName.substring(spaceIdx); } List<HashMap<String, String>> newFriends = new ArrayList<HashMap<String, String>>(); for (int i2 = 0, l2 = mFriends.size(); i2 < l2; i2++) { HashMap<String, String> oldFriend = mFriends.get(i2); if (newFriend == null) { newFriends.add(oldFriend); } else { fullName = oldFriend.get(Entities.FRIEND); spaceIdx = fullName.lastIndexOf(" "); String oldFirstName = null; String oldLastName = null; if (spaceIdx == -1) oldFirstName = fullName; else { oldFirstName = fullName.substring(0, spaceIdx++); oldLastName = fullName.substring(spaceIdx); } if (newFirstName == null) { newFriends.add(newFriend); newFriend = null; } else { int comparison = oldFirstName.compareToIgnoreCase(newFirstName); if (comparison == 0) { // compare firstnames if (newLastName == null) { newFriends.add(newFriend); newFriend = null; } else if (oldLastName != null) { comparison = oldLastName.compareToIgnoreCase(newLastName); if (comparison == 0) { newFriends.add(newFriend); newFriend = null; } else if (comparison > 0) { newFriends.add(newFriend); newFriend = null; } } } else if (comparison > 0) { newFriends.add(newFriend); newFriend = null; } } newFriends.add(oldFriend); } } if (newFriend != null) newFriends.add(newFriend); mFriends = newFriends; } } loadList = true; } catch (JSONException e) { Log.e(TAG, e.toString()); } } break; case MYSPACE: break; case LINKEDIN: break; case FOURSQUARE: break; case IDENTICA: break; case GOOGLEPLUS: break; case CHATTER: break; } return loadList; } @Override protected void onPostExecute(Boolean loadList) { if (loadList) { // SimpleAdapter sa = new SimpleAdapter(SelectFriends.this, mFriends, R.layout.friend, new String[]{Entities.PROFILE, Entities.FRIEND}, new int[]{R.id.profile, R.id.name}); SimpleAdapter sa = new SimpleAdapter(SelectFriends.this, mFriends, R.layout.friend, new String[] { Entities.FRIEND, Entities.ESID }, new int[] { R.id.name, R.id.selected }); sa.setViewBinder(mViewBinder); setListAdapter(sa); } if (loadingDialog.isShowing()) loadingDialog.dismiss(); } }; loadingDialog.setMessage(getString(R.string.loading)); loadingDialog.setCancelable(true); loadingDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) { if (!asyncTask.isCancelled()) asyncTask.cancel(true); } }); loadingDialog.setButton(ProgressDialog.BUTTON_NEGATIVE, getString(android.R.string.cancel), new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.cancel(); } }); loadingDialog.show(); asyncTask.execute(mAccountId); } }