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.nxt.njitong; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; 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.TextView; import android.widget.Toast; import com.easemob.chat.EMContactManager; import com.easemob.chatuidemo.Constant; import com.easemob.chatuidemo.activity.AddContactActivity; import com.easemob.chatuidemo.activity.ChatActivity; import com.easemob.chatuidemo.activity.GroupsActivity; import com.easemob.chatuidemo.activity.MainActivity; import com.easemob.chatuidemo.activity.NewFriendsMsgActivity; import com.easemob.chatuidemo.adapter.ContactAdapter; import com.easemob.chatuidemo.db.InviteMessgeDao; import com.easemob.chatuidemo.db.UserDao; import com.easemob.chatuidemo.domain.User; import com.easemob.chatuidemo.widget.Sidebar; import com.easemob.exceptions.EaseMobException; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Map.Entry; /** * ? * */ public class ContactlistActivity extends Activity { private ContactAdapter adapter; private List<User> contactList; private ListView listView; private boolean hidden; private Sidebar sidebar; private InputMethodManager inputMethodManager; private List<String> blackList; ImageButton clearSearch; private Context context; EditText query; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.fragment_contact_list); initviews(); } public void initviews() { //super.onActivityCreated(savedInstanceState); //T??home???appcrash //if(savedInstanceState != null && savedInstanceState.getBoolean("isConflict", false)) // return; context = this; findViewById(R.id.back).setVisibility(View.VISIBLE); ((TextView) findViewById(R.id.message_title)).setText(getIntent().getStringExtra("type")); inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE); listView = (ListView) findViewById(R.id.list); sidebar = (Sidebar) findViewById(R.id.sidebar); sidebar.setListView(listView); //??? blackList = EMContactManager.getInstance().getBlackListUsernames(); contactList = new ArrayList<User>(); // ?contactlist getContactList(); //? query = (EditText) findViewById(R.id.query); String strSearch = getResources().getString(R.string.search); query.setHint(strSearch); clearSearch = (ImageButton) findViewById(R.id.search_clear); query.addTextChangedListener(new TextWatcher() { public void onTextChanged(CharSequence s, int start, int before, int count) { adapter.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(); } }); // adapter adapter = new ContactAdapter(context, R.layout.row_contact, contactList); listView.setAdapter(adapter); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String username = adapter.getItem(position).getUsername(); if (Constant.NEW_FRIENDS_USERNAME.equals(username)) { // ? User user = DemoApplication.getInstance().getContactList().get(Constant.NEW_FRIENDS_USERNAME); user.setUnreadMsgCount(0); startActivity(new Intent(context, NewFriendsMsgActivity.class)); } else if (Constant.GROUP_USERNAME.equals(username)) { // ?? startActivity(new Intent(context, GroupsActivity.class)); } else { // demo?? startActivity(new Intent(context, ChatActivity.class).putExtra("userId", adapter.getItem(position).getUsername())); } } }); listView.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // ?? if (getWindow() .getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) { if (getCurrentFocus() != null) inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS); } return false; } }); ImageView addContactView = (ImageView) findViewById(R.id.iv_new_contact); addContactView.setVisibility(View.GONE); // ? addContactView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { startActivity(new Intent(context, AddContactActivity.class)); } }); registerForContextMenu(listView); } @Override public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); // ??menu if (((AdapterContextMenuInfo) menuInfo).position > 2) { getMenuInflater().inflate(R.menu.context_contact_list, menu); } } @Override public boolean onContextItemSelected(MenuItem item) { if (item.getItemId() == R.id.delete_contact) { User tobeDeleteUser = adapter.getItem(((AdapterContextMenuInfo) item.getMenuInfo()).position); // ? deleteContact(tobeDeleteUser); // ? InviteMessgeDao dao = new InviteMessgeDao(context); dao.deleteMessage(tobeDeleteUser.getUsername()); return true; } else if (item.getItemId() == R.id.add_to_blacklist) { User user = adapter.getItem(((AdapterContextMenuInfo) item.getMenuInfo()).position); moveToBlacklist(user.getUsername()); return true; } return super.onContextItemSelected(item); } @Override public void onResume() { super.onResume(); refresh(); } /** * ? * * @param */ public void deleteContact(final User tobeDeleteUser) { String st1 = getResources().getString(R.string.deleting); final String st2 = getResources().getString(R.string.Delete_failed); final ProgressDialog pd = new ProgressDialog(context); pd.setMessage(st1); pd.setCanceledOnTouchOutside(false); pd.show(); new Thread(new Runnable() { public void run() { try { EMContactManager.getInstance().deleteContact(tobeDeleteUser.getUsername()); // db? UserDao dao = new UserDao(context); dao.deleteContact(tobeDeleteUser.getUsername()); DemoApplication.getInstance().getContactList().remove(tobeDeleteUser.getUsername()); runOnUiThread(new Runnable() { public void run() { pd.dismiss(); adapter.remove(tobeDeleteUser); adapter.notifyDataSetChanged(); } }); } catch (final Exception e) { runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(context, st2 + e.getMessage(), Toast.LENGTH_LONG).show(); } }); } } }).start(); } /** * user??? */ private void moveToBlacklist(final String username) { final ProgressDialog pd = new ProgressDialog(context); 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); runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(context, st2, Toast.LENGTH_SHORT).show(); refresh(); } }); } catch (EaseMobException e) { e.printStackTrace(); runOnUiThread(new Runnable() { public void run() { pd.dismiss(); Toast.makeText(context, st3, Toast.LENGTH_SHORT).show(); } }); } } }).start(); } // ui public void refresh() { try { // ?? runOnUiThread(new Runnable() { public void run() { getContactList(); adapter.notifyDataSetChanged(); } }); } catch (Exception e) { e.printStackTrace(); } } /** * ?????? */ private void getContactList() { contactList.clear(); //?? Map<String, User> users = DemoApplication.getInstance().getContactList(); Iterator<Entry<String, User>> iterator = users.entrySet().iterator(); while (iterator.hasNext()) { Entry<String, User> entry = iterator.next(); if (!entry.getKey().equals(Constant.NEW_FRIENDS_USERNAME) && !entry.getKey().equals(Constant.GROUP_USERNAME) && !blackList.contains(entry.getKey())) contactList.add(entry.getValue()); } // ? Collections.sort(contactList, new Comparator<User>() { @Override public int compare(User lhs, User rhs) { return lhs.getUsername().compareTo(rhs.getUsername()); } }); // """?" //contactList.add(0, users.get(Constant.GROUP_USERNAME)); // ""? //contactList.add(0, users.get(Constant.NEW_FRIENDS_USERNAME)); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); /* if(context.isConflict){ outState.putBoolean("isConflict", true); }else if(((MainActivity)context).getCurrentAccountRemoved()){ outState.putBoolean(Constant.ACCOUNT_REMOVED, true); }*/ } public void click(View v) { finish(); } }