Java tutorial
/* * The MIT License (MIT) * * Copyright 2013 Clover Studio Ltd. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.uf.togathor.adapters; import android.annotation.TargetApi; import android.app.Activity; import android.content.Context; import android.os.Build; import android.support.v4.app.ActivityOptionsCompat; import android.support.v7.widget.CardView; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.RelativeLayout; import android.widget.TextView; import com.uf.togathor.R; import com.uf.togathor.db.couchdb.model.User; import com.uf.togathor.management.SyncModule; import com.uf.togathor.management.UsersManagement; import java.util.ArrayList; import java.util.List; /** * UsersAdapter * * Adapter class for users. */ public class UsersAdapter extends BaseAdapter implements OnItemClickListener { private String TAG = "UsersAdapter"; private List<User> mUsers = new ArrayList<User>(); private Activity mActivity; private ActivityOptionsCompat options; public UsersAdapter(Activity activity, List<User> users) { mUsers = users; mActivity = activity; } public void setItems(List<User> users) { mUsers = users; notifyDataSetChanged(); } @Override public int getCount() { if (mUsers == null) { return 0; } else { return mUsers.size(); } } @Override public User getItem(int position) { if (mUsers != null) { return mUsers.get(position); } else { return null; } } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; ViewHolder holder = null; try { if (v == null) { LayoutInflater li = (LayoutInflater) mActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = li.inflate(R.layout.user_item, parent, false); holder = new ViewHolder(); holder.ivUserImage = (ImageView) v.findViewById(R.id.ivUserImage); holder.tvUser = (TextView) v.findViewById(R.id.tvUser); holder.tvNotifications = (TextView) v.findViewById(R.id.numberOfNotifications); holder.rlNotifications = (RelativeLayout) v.findViewById(R.id.notificationBalloon); holder.pbLoading = (ProgressBar) v.findViewById(R.id.pbLoadingForImage); holder.pbLoading.setVisibility(View.VISIBLE); holder.ivFavorites = (ImageView) v.findViewById(R.id.ivFavorites); holder.tvMessages = (TextView) v.findViewById(R.id.tvMessages); holder.ivOnlineStatus = (ImageView) v.findViewById(R.id.ivOnlineStatus); holder.cardView = (CardView) v.findViewById(R.id.card_view); v.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } String transitionName = "userProfileImage"; options = ActivityOptionsCompat.makeSceneTransitionAnimation(mActivity, holder.ivUserImage, // The view which starts the transition transitionName // The transitionName of the view were transitioning to ); User user = mUsers.get(position); holder.tvMessages.setBackgroundResource(R.drawable.no_messages_icon); holder.tvMessages.setText(null); holder.tvUser.setText(user.getName()); holder.ivFavorites.setBackgroundResource(R.drawable.not_in_favorites_icon); for (String contactId : UsersManagement.getLoginUser().getContactIds()) { if (user.getId().equals(contactId)) { holder.ivFavorites.setBackgroundResource(R.drawable.favorites_icon); } } if (user.getOnlineStatus() != null) { holder.ivOnlineStatus.setVisibility(View.VISIBLE); if (user.getOnlineStatus().equals(mActivity.getString(R.string.online))) { holder.ivOnlineStatus.setImageResource(R.drawable.user_online_indicator); //user_online_icon } if (user.getOnlineStatus().equals(mActivity.getString(R.string.away))) { holder.ivOnlineStatus.setImageResource(R.drawable.user_offline_indicator); //user_away_icon } if (user.getOnlineStatus().equals(mActivity.getString(R.string.busy))) { holder.ivOnlineStatus.setImageResource(R.drawable.user_offline_indicator); //user_busy_icon } if (user.getOnlineStatus().equals(mActivity.getString(R.string.offline))) { holder.ivOnlineStatus.setImageResource(R.drawable.user_offline_indicator); //user_offline_icon } } else { holder.ivOnlineStatus.setImageResource(R.drawable.user_offline_indicator); // user_offline_icon } } catch (Exception e) { Log.e(TAG, "error on inflating users"); } return v; } class ViewHolder { public ImageView ivUserImage; public TextView tvUser; public TextView tvNotifications; public RelativeLayout rlNotifications; public ProgressBar pbLoading; public ImageView ivFavorites; public TextView tvMessages; public ImageView ivOnlineStatus; public CardView cardView; } @TargetApi(Build.VERSION_CODES.LOLLIPOP) public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { User user = (User) arg0.getItemAtPosition(arg2); UsersManagement.setToUser(user); UsersManagement.setToGroup(null); boolean isLoginUser = user.getId().equals(UsersManagement.getLoginUser().getId()); if (!isLoginUser) { SyncModule.addUserContact(user.getId(), mActivity); } } }