本项目是即时通讯的示例项目,使用了MVP模式,集成了环信SDK和Bmob后端云,展示了即时通讯基本的功能的实现,包括注册登录,退出登录,联系人列表,添加好友,删除好友,收发消息,消息提醒等功能。
- 环信SDK的集成与使用
- MVP模式的运用
- ORM数据库的集成与使用
- 模块化**的运用
允许两人或多人使用网路即时的传递文字讯息、档案、语音与视频交流。
- 鼻祖 ICQ
- 国内主流 QQ 微信 陌陌 YY等
- 国外主流 Facebook Messenger WhatsApp Skype Instagram Line
-
放在jniLibs
-
也可以放在libs目录下,不过需要在模块下的配置文件中配置
android { sourceSets { main { jniLibs.srcDirs = ['libs'] } } }
运行出错:Didn't find class "com.hyphenate.chat.adapter.EMACallSession",原因是hyphenatechat_3.2.0.jar包内没有该类。
解决办法:导入Demo源码中EaseUI库里面的hyphenatechat_3.2.0.jar替换。
MVC应用于Ruby on Rails, Spring Framework, iOS开发和 ASP.NET等。
- Model: 获取数据的业务逻辑,网络操作,数据库操作
- View: UI
- Controller: 操作Model层获取数据传递给UI
Android中并没有清晰的MVC框架,如果把Activity当做Controller,根据我们实际开发经验,里面会有大量的UI操作,所以V和C就傻傻分不清了。
- Model:Java Bean, NetworkManager, DataBaseHelper
- View: xml res
- Controller: Activity Fragment
- ArrayList-ListView-Adapter(MVC)
MVP主要应用于ASP.NET等。MVP与MVC主要区别是View和Model不再耦合。
MVVM主要应用于WPF, Silverlight, Caliburn, nRoute等。
- Model: 获取数据的业务逻辑,网络操作,数据库操作
- View: UI
- ViewModel: 将View和Model绑定
分层分模块
Understanding MVC, MVP and MVVM Design Patterns
- adapter 存放适配器
- app 存放常量类,Application类以及一些app层级的全局类
- database 数据库相关类
- event EventBus使用的事件类
- factory 工厂类
- model 数据模型
- presenter MVP模型中的Presenter类
- ui 存放activity和fragment
- utils 工具类
- view MVP模型中的View类
- widget 自定义控件
- BaseActivity
- BaseFragment
- 如果没有登录,延时2s, 跳转到登录界面
- 如果已经登录,则跳转到主界面
- SplashView
- SplashPresenter
- 有两种情况都可以发起登录操作,一是点击登录按钮,而是点击虚拟键盘上的Action键。
- 点击新用户,跳转到注册界面。
注意配置EditText的imeOptions属性时,需要配合inputType才能起作用。
android:imeOptions="actionNext"//下一个
android:imeOptions="actionGo"//启动
android:imeOptions="actionDone"//完成
android:imeOptions="actionPrevious"//上一个
android:imeOptions="actionSearch"//搜索
android:imeOptions="actionSend"//发送
- LoginView
- LoginPresenter
public class EMCallBackAdapter implements EMCallBack{
@Override
public void onSuccess() {
}
@Override
public void onError(int i, String s) {
}
@Override
public void onProgress(int i, String s) {
}
}
举个栗子:高德地图 百度地图等
/**
* 是否有写磁盘权限
*/
private boolean hasWriteExternalStoragePermission() {
int result = ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE);
return result == PermissionChecker.PERMISSION_GRANTED;
}
/**
* 申请权限
*/
private void applyPermission() {
String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
ActivityCompat.requestPermissions(this, permissions, REQUEST_WRITE_EXTERNAL_STORAGE);
}
/**
* 申请权限回调
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case REQUEST_WRITE_EXTERNAL_STORAGE:
if (grantResults[0] == PermissionChecker.PERMISSION_GRANTED) {
login();
} else {
toast(getString(R.string.not_get_permission));
}
break;
}
}
- 用户名的长度必须是3-20位,首字母必须为英文字符,其他字符则除了英文外还可以是数字或者下划线。
- 密码必须是3-20位的数字。
- 密码和确认密码一致
private static final String USER_NAME_REGEX = "^[a-zA-Z]\\w{2,19}$";
private static final String PASSWORD_REGEX = "^[0-9]{3,20}$";
- \w 匹配包括下划线的任何单词字符。等价于'[A-Za-z0-9_]'。
- RegisterView
- RegisterPresenter
- 实际项目中,注册会将用户名和密码注册到APP的服务器,然后APP的服务器再通过REST API方式注册到环信服务器。
- 由于本项目没有APP服务器,会将用户数据注册到第三方云数据库Bmob,注册成功后,在客户端发送请求注册到环信服务器。
- 注册创建应用
- 下载SDK
- 导入SDK
- 初始化SDk
protected void hideSoftKeyboard() {
if (mInputMethodManager == null) {
mInputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
}
mInputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0);
}
private TextView.OnEditorActionListener mOnEditorActionListener = new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_GO) {
reigister();//注册
return true;
}
return false;
}
};
RadioGroup, TabHost, FragmentTabHost, 自定义
BottomBar AHBottomNavigation BottomNavigation
- ContactView
- ContactPresenter
private boolean itemInSameGroup(int i, ContactItem item) {
return i > 0 && (item.getFirstLetter() == mContactItems.get(i - 1).getFirstLetter());
}
mSwipeRefreshLayout.setColorSchemeResources(R.color.qq_blue, R.color.qq_red);
mSwipeRefreshLayout.setOnRefreshListener(mOnRefreshListener);
private static final String[] SECTIONS = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L"
, "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};
http://www.cnblogs.com/tianzhijiexian/p/4297664.html
private SlideBar.OnSlideBarChangeListener mOnSlideBarChangeListener = new SlideBar.OnSlideBarChangeListener() {
@Override
public void onSectionChange(int index, String section) {
mSection.setVisibility(View.VISIBLE);
mSection.setText(section);
scrollToSection(section);
}
@Override
public void onSlidingFinish() {
mSection.setVisibility(View.GONE);
}
};
/**
* RecyclerView滚动直到界面出现对应section的联系人
*
* @param section 首字符
*/
private void scrollToSection(String section) {
int sectionPosition = getSectionPosition(section);
if (sectionPosition != POSITION_NOT_FOUND) {
mRecyclerView.smoothScrollToPosition(sectionPosition);
}
}
/**
*
* @param section 首字符
* @return 在联系人列表中首字符是section的第一个联系人在联系人列表中的位置
*/
private int getSectionPosition(String section) {
List<ContactItem> contactItems = mContactListAdapter.getContactItems();
for (int i = 0; i < contactItems.size(); i++) {
if (section.equals(contactItems.get(i).getFirstLetterString())) {
return i;
}
}
return POSITION_NOT_FOUND;
}
private ContactListAdapter.OnItemClickListener mOnItemClickListener = new ContactListAdapter.OnItemClickListener() {
/**
* 单击跳转到聊天界面
* @param name 点击item的联系人名字
*/
@Override
public void onItemClick(String name) {
startActivity(ChatActivity.class, Constant.Extra.USER_NAME, name);
}
/**
* 长按删除好友
* @param name 点击item的联系人名字
*/
@Override
public void onItemLongClick(final String name) {
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
String message = String.format(getString(R.string.delete_friend_message), name);
builder.setTitle(getString(R.string.delete_friend))
.setMessage(message)
.setNegativeButton(getString(R.string.cancel), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
})
.setPositiveButton(getString(R.string.confirm), new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
showProgress(getString(R.string.deleting_friend));
mContactPresenter.deleteFriend(name);
}
});
builder.show();
}
};
@Override
public void searchFriend(final String keyword) {
mAddFriendView.onStartSearch();
//注:模糊查询只对付费用户开放,付费后可直接使用。
BmobQuery<User> query = new BmobQuery<User>();
query.addWhereContains("username", keyword).addWhereNotEqualTo("username", EMClient.getInstance().getCurrentUser());
query.findObjects(new FindListener<User>() {
@Override
public void done(List<User> list, BmobException e) {
processResult(list, e);
}
});
}
greenDAO是Android SQLite数据库ORM框架的一种。ORM即对象关系映射, object/relational mapping, 将Java对象映射成数据库的表。
@Entity
public class Contact {
@Id
public Long id;
public String userName;
}
public void init(Context context) {
DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(context, Constant.Database.DATABASE_NAME, null);
SQLiteDatabase writableDatabase = devOpenHelper.getWritableDatabase();
DaoMaster daoMaster = new DaoMaster(writableDatabase);
mDaoSession = daoMaster.newSession();
}
public void saveContact(String userName) {
Contact contact = new Contact();
contact.setUsername(userName);
mDaoSession.getContactDao().save(contact);
}
public List<String> queryAllContacts() {
List<Contact> list = mDaoSession.getContactDao().queryBuilder().list();
ArrayList<String> contacts = new ArrayList<String>();
for (int i = 0; i < list.size(); i++) {
String contact = list.get(i).getUsername();
contacts.add(contact);
}
return contacts;
}
public void deleteAllContacts() {
ContactDao contactDao = mDaoSession.getContactDao();
contactDao.deleteAll();
}
@OnClick(R.id.add)
public void onClick() {
String friendName = mUserName.getText().toString().trim();
String addFriendReason = getContext().getString(R.string.add_friend_reason);
AddFriendEvent event = new AddFriendEvent(friendName, addFriendReason);
EventBus.getDefault().post(event);
}
@Subscribe(threadMode = ThreadMode.BACKGROUND)
public void addFriend(AddFriendEvent event) {
try {
EMClient.getInstance().contactManager().addContact(event.getFriendName(), event.getReason());
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
mAddFriendView.onAddFriendSuccess();
}
});
} catch (HyphenateException e) {
e.printStackTrace();
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
mAddFriendView.onAddFriendFailed();
}
});
}
private EMContactListenerAdapter mEMContactListener = new EMContactListenerAdapter() {
@Override
public void onContactAdded(String s) {
mContactPresenter.refreshContactList();
}
@Override
public void onContactDeleted(String s) {
mContactPresenter.refreshContactList();
}
};
mEdit.addTextChangedListener(mTextWatcher);
private TextWatcherAdapter mTextWatcher = new TextWatcherAdapter() {
@Override
public void afterTextChanged(Editable s) {
mSend.setEnabled(s.length() != 0);
}
};
- anim文件夹:存放补间动画
- animator文件夹:存放属性动画
- drawable文件夹:存放帧动画
<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@mipmap/loading1" android:duration="100"/>
<item android:drawable="@mipmap/loading2" android:duration="100"/>
<item android:drawable="@mipmap/loading3" android:duration="100"/>
<item android:drawable="@mipmap/loading4" android:duration="100"/>
<item android:drawable="@mipmap/loading5" android:duration="100"/>
<item android:drawable="@mipmap/loading6" android:duration="100"/>
<item android:drawable="@mipmap/loading7" android:duration="100"/>
<item android:drawable="@mipmap/loading8" android:duration="100"/>
</animation-list>
@Override
public int getItemViewType(int position) {
EMMessage message = mMessages.get(position);
return message.direct() == EMMessage.Direct.SEND ? ITEM_TYPE_SEND_MESSAGE : ITEM_TYPE_RECEIVE_MESSAGE;
}
/**
* 如果两个消息之间的时间太近,就不显示时间戳
*/
private boolean shouldShowTimeStamp(int position) {
long currentItemTimestamp = mMessages.get(position).getMsgTime();
long preItemTimestamp = mMessages.get(position - 1).getMsgTime();
boolean closeEnough = DateUtils.isCloseEnough(currentItemTimestamp, preItemTimestamp);
return !closeEnough;
}
private void updateSendingStatus(EMMessage emMessage) {
switch (emMessage.status()) {
case INPROGRESS:
mSendMessageProgress.setVisibility(VISIBLE);
mSendMessageProgress.setImageResource(R.drawable.send_message_progress);
AnimationDrawable drawable = (AnimationDrawable) mSendMessageProgress.getDrawable();
drawable.start();
break;
case SUCCESS:
mSendMessageProgress.setVisibility(GONE);
break;
case FAIL:
mSendMessageProgress.setImageResource(R.mipmap.msg_error);
break;
}
}
private EMMessageListenerAdapter mEMMessageListener = new EMMessageListenerAdapter() {
@Override
public void onMessageReceived(final List<EMMessage> list) {
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
final EMMessage emMessage = list.get(0);
mChatPresenter.makeMessageRead(mUserName);
mMessageListAdapter.addNewMessage(emMessage);
smoothScrollToBottom();
}
});
}
};
@Override
public void loadMessages(final String userName) {
ThreadUtils.runOnBackgroundThread(new Runnable() {
@Override
public void run() {
EMConversation conversation = EMClient.getInstance().chatManager().getConversation(userName);
if (conversation != null) {
//获取此会话的所有消息
List<EMMessage> messages = conversation.getAllMessages();
mEMMessageList.addAll(messages);
//指定会话消息未读数清零
conversation.markAllMessagesAsRead();
}
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
mChatView.onMessagesLoaded();
}
});
}
});
}
@Override
public void loadMoreMessages(final String userName) {
if (hasMoreData) {
ThreadUtils.runOnBackgroundThread(new Runnable() {
@Override
public void run() {
EMConversation conversation = EMClient.getInstance().chatManager().getConversation(userName);
EMMessage firstMessage = mEMMessageList.get(0);
//SDK初始化加载的聊天记录为20条,到顶时需要去DB里获取更多
//获取startMsgId之前的pagesize条消息,此方法获取的messages SDK会自动存入到此会话中,APP中无需再次把获取到的messages添加到会话中
final List<EMMessage> messages = conversation.loadMoreMsgFromDB(firstMessage.getMsgId(), DEFAULT_PAGE_SIZE);
hasMoreData = (messages.size() == DEFAULT_PAGE_SIZE);
mEMMessageList.addAll(0, messages);
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
mChatView.onMoreMessagesLoaded(messages.size());
}
});
}
});
} else {
mChatView.onNoMoreData();
}
}
- ConversationView
- ConversationPresenter
@Override
public void loadAllConversations() {
ThreadUtils.runOnBackgroundThread(new Runnable() {
@Override
public void run() {
Map<String, EMConversation> conversations = EMClient.getInstance().chatManager().getAllConversations();
mEMConversations.addAll(conversations.values());
Collections.sort(mEMConversations, new Comparator<EMConversation>() {
@Override
public int compare(EMConversation o1, EMConversation o2) {
return (int) (o2.getLastMessage().getMsgTime() - o1.getLastMessage().getMsgTime());
}
});
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
mConversationView.onAllConversationsLoaded();
}
});
}
});
}
private EMMessageListenerAdapter mEMMessageListenerAdapter = new EMMessageListenerAdapter() {
@Override
public void onMessageReceived(List<EMMessage> list) {
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
toast(getString(R.string.receive_new_message));
mConversationPresenter.loadAllConversations();
}
});
}
};
private EMMessageListenerAdapter mEMMessageListenerAdapter = new EMMessageListenerAdapter() {
//该回调在子线程中调用
@Override
public void onMessageReceived(List<EMMessage> list) {
updateUnreadCount();
}
};
private void updateUnreadCount() {
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
BottomBarTab bottomBar = mBottomBar.getTabWithId(R.id.conversations);
int count = EMClient.getInstance().chatManager().getUnreadMsgsCount();
bottomBar.setBadgeCount(count);
}
});
}
//指定会话消息未读数清零
conversation.markAllMessagesAsRead();
@Override
protected void onResume() {
super.onResume();
updateUnreadCount();
}
public boolean isForeground() {
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
List<ActivityManager.RunningAppProcessInfo> runningAppProcesses = am.getRunningAppProcesses();
if (runningAppProcesses == null) {
return false;
}
for (ActivityManager.RunningAppProcessInfo info :runningAppProcesses) {
if (info.processName.equals(getPackageName()) && info.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return true;
}
}
return false;
}
private void showNotification(EMMessage emMessage) {
String contentText = "";
if (emMessage.getBody() instanceof EMTextMessageBody) {
contentText = ((EMTextMessageBody) emMessage.getBody()).getMessage();
}
Intent chat = new Intent(this, ChatActivity.class);
chat.putExtra(Constant.Extra.USER_NAME, emMessage.getUserName());
PendingIntent pendingIntent = PendingIntent.getActivity(this, 1, chat, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification notification = new Notification.Builder(this)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.avatar1))
.setSmallIcon(R.mipmap.ic_contact_selected_2)
.setContentTitle(getString(R.string.receive_new_message))
.setContentText(contentText)
.setPriority(Notification.PRIORITY_MAX)
.setContentIntent(pendingIntent)
.setAutoCancel(true)
.build();
notificationManager.notify(1, notification);
}
private void initSoundPool() {
mSoundPool = new SoundPool(2, AudioManager.STREAM_MUSIC, 0);
mDuanSound = mSoundPool.load(this, R.raw.duan, 1);
mYuluSound = mSoundPool.load(this, R.raw.yulu, 1);
}
private EMMessageListenerAdapter mEMMessageListenerAdapter = new EMMessageListenerAdapter() {
@Override
public void onMessageReceived(List<EMMessage> list) {
if (isForeground()) {
mSoundPool.play(mDuanSound, 1, 1, 0, 0, 1);
} else {
mSoundPool.play(mYuluSound, 1, 1, 0, 0, 1);
showNotification(list.get(0));
}
}
};
private EMConnectionListener mEMConnectionListener = new EMConnectionListener() {
@Override
public void onConnected() {
}
@Override
public void onDisconnected(int i) {
if (i == EMError.USER_LOGIN_ANOTHER_DEVICE) {
ThreadUtils.runOnUiThread(new Runnable() {
@Override
public void run() {
startActivity(LoginActivity.class);
toast(getString(R.string.user_login_another_device));
}
});
}
}
};