Java tutorial
/** * Copyright (C) 2013-2014 EaseMob Technologies. All rights reserved. * * 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.sxt.superqq.fragment; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; import android.app.ProgressDialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.Editable; import android.text.TextWatcher; import android.view.ContextMenu; import android.view.ContextMenu.ContextMenuInfo; import android.view.LayoutInflater; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.View.OnClickListener; import android.view.View.OnTouchListener; import android.view.ViewGroup; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.widget.AdapterView; import android.widget.AdapterView.AdapterContextMenuInfo; import android.widget.AdapterView.OnItemClickListener; import android.widget.EditText; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ListView; import android.widget.Toast; import com.easemob.chat.EMContactManager; import com.easemob.exceptions.EaseMobException; import com.sxt.superqq.Constant; import com.sxt.superqq.R; import com.sxt.superqq.SuperQQApplication; import com.sxt.superqq.activity.AddContactActivity; import com.sxt.superqq.activity.ChatActivity; import com.sxt.superqq.activity.GroupsActivity; import com.sxt.superqq.activity.MainActivity; import com.sxt.superqq.activity.NewFriendsMsgActivity; import com.sxt.superqq.adapter.Contact_Adapter; import com.sxt.superqq.bean.UserBean; import com.sxt.superqq.db.EMUserDao; import com.sxt.superqq.db.InviteMessgeDao; import com.sxt.superqq.domain.User; import com.sxt.superqq.utils.UserUtils; import com.sxt.superqq.widget.Sidebar; /** * ? * */ public class ContactlistFragment extends Fragment { private Contact_Adapter mAdapter; // private List<User> contactList; private List<UserBean> mContactList; private ListView listView; private boolean hidden; private Sidebar sidebar; private InputMethodManager inputMethodManager; private List<String> blackList; ImageButton clearSearch; EditText query; /** ??? */ private ContactChangedReceiver mReceiver; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_contact_list, container, false); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // T??home???appcrash if (savedInstanceState != null && savedInstanceState.getBoolean("isConflict", false)) return; inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); listView = (ListView) getView().findViewById(R.id.list); sidebar = (Sidebar) getView().findViewById(R.id.sidebar); sidebar.setListView(listView); // ??? blackList = EMContactManager.getInstance().getBlackListUsernames(); // contactList = new ArrayList<User>(); // ? query = (EditText) getView().findViewById(R.id.query); query.setHint(R.string.search); clearSearch = (ImageButton) getView().findViewById(R.id.search_clear); query.addTextChangedListener(new TextWatcher() { public void onTextChanged(CharSequence s, int start, int before, int count) { mAdapter.getFilter().filter(s); if (s.length() > 0) { clearSearch.setVisibility(View.VISIBLE); } else { clearSearch.setVisibility(View.INVISIBLE); } } public void beforeTextChanged(CharSequence s, int start, int count, int after) { } public void afterTextChanged(Editable s) { } }); clearSearch.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { query.getText().clear(); hideSoftKeyboard(); } }); mContactList = new ArrayList<UserBean>(); // adapter mAdapter = new Contact_Adapter(getActivity(), R.layout.row_contact, mContactList); listView.setAdapter(mAdapter); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String username = mAdapter.getItem(position).getUserName(); if (Constant.NEW_FRIENDS_USERNAME.equals(username)) { // ? User user = SuperQQApplication.getInstance().getContact_List() .get(Constant.NEW_FRIENDS_USERNAME); user.setUnreadMsgCount(0); startActivity(new Intent(getActivity(), NewFriendsMsgActivity.class)); } else if (Constant.GROUP_USERNAME.equals(username)) { // ?? startActivity(new Intent(getActivity(), GroupsActivity.class)); } else { // demo?? startActivity(new Intent(getActivity(), ChatActivity.class).putExtra("userId", mAdapter.getItem(position).getUserName())); } } }); listView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // ?? if (getActivity().getWindow() .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) { if (getActivity().getCurrentFocus() != null) inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } return false; } }); ImageView addContactView = (ImageView) getView().findViewById(R.id.iv_new_contact); // ? addContactView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(getActivity(), AddContactActivity.class)); } }); registerForContextMenu(listView); regsiterContactReceiver(); } /** * ??? */ private void regsiterContactReceiver() { mReceiver = new ContactChangedReceiver(); IntentFilter filter = new IntentFilter("update_contacts"); getActivity().registerReceiver(mReceiver, filter); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); // ??menu if (((AdapterContextMenuInfo) menuInfo).position > 1) { getActivity().getMenuInflater().inflate(R.menu.context_contact_list, menu); } } @Override public boolean onContextItemSelected(MenuItem item) { if (item.getItemId() == R.id.delete_contact) { UserBean tobeDeleteUser = mAdapter.getItem(((AdapterContextMenuInfo) item.getMenuInfo()).position); // ? deleteContact(tobeDeleteUser); // ? InviteMessgeDao dao = new InviteMessgeDao(getActivity()); dao.deleteMessage(tobeDeleteUser.getUserName()); return true; } else if (item.getItemId() == R.id.add_to_blacklist) { UserBean user = mAdapter.getItem(((AdapterContextMenuInfo) item.getMenuInfo()).position); moveToBlacklist(user.getUserName()); return true; } return super.onContextItemSelected(item); } @Override public void onHiddenChanged(boolean hidden) { super.onHiddenChanged(hidden); this.hidden = hidden; if (!hidden) { refresh(); } } @Override public void onResume() { super.onResume(); if (!hidden) { refresh(); } } /** * ? * * @param toDeleteUser */ public void deleteContact(final UserBean tobeDeleteUser) { String st1 = getResources().getString(R.string.deleting); final String st2 = getResources().getString(R.string.Delete_failed); final ProgressDialog pd = new ProgressDialog(getActivity()); pd.setMessage(st1); pd.setCanceledOnTouchOutside(false); pd.show(); new Thread(new Runnable() { public void run() { try { EMContactManager.getInstance().deleteContact(tobeDeleteUser.getUserName()); // db? EMUserDao dao = new EMUserDao(getActivity()); dao.deleteContact(tobeDeleteUser.getUserName()); SuperQQApplication.getInstance().getContact_List().remove(tobeDeleteUser.getUserName()); getActivity().runOnUiThread(new Runnable() { public void run() { pd.dismiss(); mAdapter.remove(tobeDeleteUser); } }); } catch (final Exception e) { getActivity().runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(getActivity(), st2 + e.getMessage(), 1).show(); } }); } } }).start(); } /** * user??? */ private void moveToBlacklist(final String username) { final ProgressDialog pd = new ProgressDialog(getActivity()); String st1 = getResources().getString(R.string.Is_moved_into_blacklist); final String st2 = getResources().getString(R.string.Move_into_blacklist_success); final String st3 = getResources().getString(R.string.Move_into_blacklist_failure); pd.setMessage(st1); pd.setCanceledOnTouchOutside(false); pd.show(); new Thread(new Runnable() { public void run() { try { // ??? EMContactManager.getInstance().addUserToBlackList(username, false); getActivity().runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(getActivity(), st2, 0).show(); refresh(); } }); } catch (EaseMobException e) { e.printStackTrace(); getActivity().runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(getActivity(), st3, 0).show(); } }); } } }).start(); } // ui public void refresh() { try { // ?? getActivity().runOnUiThread(new Runnable() { public void run() { // initContactList(); mAdapter.notifyDataSetChanged(); } }); } catch (Exception e) { e.printStackTrace(); } } /** * ???? */ private void initContactList() { // user"" UserBean newFriends = new UserBean(); newFriends.setUserName(Constant.NEW_FRIENDS_USERNAME); String strChat = getResources().getString(R.string.Application_and_notify); newFriends.setNick(strChat); // "?" UserBean groupUser = new UserBean(); String strGroup = getResources().getString(R.string.group_chat); groupUser.setUserName(Constant.GROUP_USERNAME); groupUser.setNick(strGroup); groupUser.setHeader(""); mContactList.add(0, newFriends); mContactList.add(0, groupUser); } void hideSoftKeyboard() { if (getActivity().getWindow() .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) { if (getActivity().getCurrentFocus() != null) inputMethodManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (((MainActivity) getActivity()).isConflict) { outState.putBoolean("isConflict", true); } else if (((MainActivity) getActivity()).getCurrentAccountRemoved()) { outState.putBoolean(Constant.ACCOUNT_REMOVED, true); } } /** * ??? * * @author yao * */ class ContactChangedReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { mContactList.clear(); // ?contactlist initContactList(); // 1.???:ArrayList<UserBean> ArrayList<UserBean> contactList = SuperQQApplication.getInstance().getContactList(); if (!mContactList.containsAll(contactList)) { // 2.mContactList mContactList.addAll(contactList); } // 3.??header for (UserBean user : contactList) { UserUtils.setUserHearder(user.getUserName(), user); } if (mContactList.size() > 2) { // 4.mContactList???userheader? Collections.sort(mContactList, new Comparator<UserBean>() { @Override public int compare(UserBean user1, UserBean user2) { if (user1.getId() > 0 && user2.getId() > 0) { return user1.getHeader().compareTo(user2.getHeader()); } return 0; } }); } mAdapter.notifyDataSetChanged(); } } }