http://blog.csdn.net/shimiso/article/details/11225873

在上两篇文章中，我们依次介绍openfire部署以及smack常用API的使用，这一节中我们着力介绍如何基于asmack开发一个Android的客户端，本篇的重点在实践，讲解和原理环节，大家可以参考前两篇的文章

1.源码结构介绍

activity包下存放一些android页面交互相关的控制程序，还有一个些公共帮助类

db包为sqlite的工具类封装，这里做了一些自定义的改造，稍微仿Spring的JdbcTemplate结构，使用起来更加方便一点

manager包留下主要是一些管理组件，包括联系人管理，消息管理，提醒管理，离线消息管理，用户管理，xmpp连接管理

model包中都是一些对象模型，传输介质

service中存放一些android后台的核心服务，主要包括聊天服务，联系人服务，系统消息服务，重连接服务

task包中存放一些耗时的异步操作

util中存放一些常用的工具类

view中一些和android的UI相关的显示控件

anim中存放一些动画元素的配置

layout是布局页面

menu是地步菜单布局页面

values中存放一些字符，颜色，样式，参数的配置信息

其中strings.xml中，保存的缺省配置为gtalk的服务器信息，大家如果有谷歌gtalk的账号可以直接登录，否则需要更改这里的配置才可以使用其他的xmpp服务器

<!-- 缺省的服务器配置 -->   <integer name="xmpp_port">5222</integer>   <string name="xmpp_host">talk.google.com</string>   <string name="xmpp_service_name">gmail.com</string>  <bool name="is_remember">true</bool>  <bool name="is_autologin">false</bool>  <bool name="is_novisible">false</bool>   

AndroidManifest.xml为android功能清单的配置文件，我们这里开放的权限并不多

 <!-- 访问Internet -->  
<uses-permission android:name="android.permission.INTERNET" />  
<!--- 访问网络状态 -->  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />  <!-- 往SDCard写入数据权限 -->  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  <span style="WHITE-SPACE: pre">  </span><!-- 在SDCard中创建与删除文件权限 -->  <span style="WHITE-SPACE: pre">  </span><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>  <span style="WHITE-SPACE: pre">  </span><!-- 往SDCard写入数据权限 -->  <span style="WHITE-SPACE: pre">  </span><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>  

2.核心类介绍

package csdn.shimiso.eim.activity;  import android.app.Activity;  
import android.app.AlertDialog;  
import android.app.Notification;  
import android.app.NotificationManager;  
import android.app.PendingIntent;  
import android.app.ProgressDialog;  
import android.content.Context;  
import android.content.DialogInterface;  
import android.content.Intent;  
import android.content.SharedPreferences;  
import android.location.LocationManager;  
import android.net.ConnectivityManager;  
import android.net.NetworkInfo;  
import android.os.Bundle;  
import android.os.Environment;  
import android.provider.Settings;  
import android.view.inputmethod.InputMethodManager;  
import android.widget.Toast;  
import csdn.shimiso.eim.R;  
import csdn.shimiso.eim.comm.Constant;  
import csdn.shimiso.eim.model.LoginConfig;  
import csdn.shimiso.eim.service.IMChatService;  
import csdn.shimiso.eim.service.IMContactService;  
import csdn.shimiso.eim.service.IMSystemMsgService;  
import csdn.shimiso.eim.service.ReConnectService;  /** * Actity 工具支持类 *  * @author shimiso *  */  
public class ActivitySupport extends Activity implements IActivitySupport {  protected Context context = null;  protected SharedPreferences preferences;  protected EimApplication eimApplication;  protected ProgressDialog pg = null;  protected NotificationManager notificationManager;  @Override  protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  context = this;  preferences = getSharedPreferences(Constant.LOGIN_SET, 0);  notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);  pg = new ProgressDialog(context);  eimApplication = (EimApplication) getApplication();  eimApplication.addActivity(this);  }  @Override  protected void onStart() {  super.onStart();  }  @Override  protected void onResume() {  super.onResume();  }  @Override  protected void onPause() {  super.onPause();  }  @Override  protected void onStop() {  super.onStop();  }  @Override  public void onDestroy() {  super.onDestroy();  }  @Override  public ProgressDialog getProgressDialog() {  return pg;  }  @Override  public void startService() {  // 好友联系人服务  Intent server = new Intent(context, IMContactService.class);  context.startService(server);  // 聊天服务  Intent chatServer = new Intent(context, IMChatService.class);  context.startService(chatServer);  // 自动恢复连接服务  Intent reConnectService = new Intent(context, ReConnectService.class);  context.startService(reConnectService);  // 系统消息连接服务  Intent imSystemMsgService = new Intent(context,  IMSystemMsgService.class);  context.startService(imSystemMsgService);  }  /** *  * 销毁服务. *  * @author shimiso * @update 2012-5-16 下午12:16:08 */  @Override  public void stopService() {  // 好友联系人服务  Intent server = new Intent(context, IMContactService.class);  context.stopService(server);  // 聊天服务  Intent chatServer = new Intent(context, IMChatService.class);  context.stopService(chatServer);  // 自动恢复连接服务  Intent reConnectService = new Intent(context, ReConnectService.class);  context.stopService(reConnectService);  // 系统消息连接服务  Intent imSystemMsgService = new Intent(context,  IMSystemMsgService.class);  context.stopService(imSystemMsgService);  }  @Override  public void isExit() {  new AlertDialog.Builder(context).setTitle("确定退出吗?")  .setNeutralButton("确定", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {  stopService();  eimApplication.exit();  }  })  .setNegativeButton("取消", new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog, int which) {  dialog.cancel();  }  }).show();  }  @Override  public boolean hasInternetConnected() {  ConnectivityManager manager = (ConnectivityManager) context  .getSystemService(context.CONNECTIVITY_SERVICE);  if (manager != null) {  NetworkInfo network = manager.getActiveNetworkInfo();  if (network != null && network.isConnectedOrConnecting()) {  return true;  }  }  return false;  }  @Override  public boolean validateInternet() {  ConnectivityManager manager = (ConnectivityManager) context  .getSystemService(context.CONNECTIVITY_SERVICE);  if (manager == null) {  openWirelessSet();  return false;  } else {  NetworkInfo[] info = manager.getAllNetworkInfo();  if (info != null) {  for (int i = 0; i < info.length; i++) {  if (info[i].getState() == NetworkInfo.State.CONNECTED) {  return true;  }  }  }  }  openWirelessSet();  return false;  }  @Override  public boolean hasLocationGPS() {  LocationManager manager = (LocationManager) context  .getSystemService(context.LOCATION_SERVICE);  if (manager  .isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {  return true;  } else {  return false;  }  }  @Override  public boolean hasLocationNetWork() {  LocationManager manager = (LocationManager) context  .getSystemService(context.LOCATION_SERVICE);  if (manager  .isProviderEnabled(android.location.LocationManager.NETWORK_PROVIDER)) {  return true;  } else {  return false;  }  }  @Override  public void checkMemoryCard() {  if (!Environment.MEDIA_MOUNTED.equals(Environment  .getExternalStorageState())) {  new AlertDialog.Builder(context)  .setTitle(R.string.prompt)  .setMessage("请检查内存卡")  .setPositiveButton(R.string.menu_settings,  new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog,  int which) {  dialog.cancel();  Intent intent = new Intent(  Settings.ACTION_SETTINGS);  context.startActivity(intent);  }  })  .setNegativeButton("退出",  new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog,  int which) {  dialog.cancel();  eimApplication.exit();  }  }).create().show();  }  }  public void openWirelessSet() {  AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);  dialogBuilder  .setTitle(R.string.prompt)  .setMessage(context.getString(R.string.check_connection))  .setPositiveButton(R.string.menu_settings,  new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog,  int which) {  dialog.cancel();  Intent intent = new Intent(  Settings.ACTION_WIRELESS_SETTINGS);  context.startActivity(intent);  }  })  .setNegativeButton(R.string.close,  new DialogInterface.OnClickListener() {  @Override  public void onClick(DialogInterface dialog,  int whichButton) {  dialog.cancel();  }  });  dialogBuilder.show();  }  /** *  * 显示toast *  * @param text * @param longint * @author shimiso * @update 2012-6-28 下午3:46:18 */  public void showToast(String text, int longint) {  Toast.makeText(context, text, longint).show();  }  @Override  public void showToast(String text) {  Toast.makeText(context, text, Toast.LENGTH_SHORT).show();  }  /** *  * 关闭键盘事件 *  * @author shimiso * @update 2012-7-4 下午2:34:34 */  public void closeInput() {  InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);  if (inputMethodManager != null && this.getCurrentFocus() != null) {  inputMethodManager.hideSoftInputFromWindow(this.getCurrentFocus()  .getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);  }  }  /** *  * 发出Notification的method. *  * @param iconId *            图标 * @param contentTitle *            标题 * @param contentText *            你内容 * @param activity * @author shimiso * @update 2012-5-14 下午12:01:55 */  public void setNotiType(int iconId, String contentTitle,  String contentText, Class activity, String from) {  /* * 创建新的Intent，作为点击Notification留言条时， 会运行的Activity */  Intent notifyIntent = new Intent(this, activity);  notifyIntent.putExtra("to", from);  // notifyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);  /* 创建PendingIntent作为设置递延运行的Activity */  PendingIntent appIntent = PendingIntent.getActivity(this, 0,  notifyIntent, 0);  /* 创建Notication，并设置相关参数 */  Notification myNoti = new Notification();  // 点击自动消失  myNoti.flags = Notification.FLAG_AUTO_CANCEL;  /* 设置statusbar显示的icon */  myNoti.icon = iconId;  /* 设置statusbar显示的文字信息 */  myNoti.tickerText = contentTitle;  /* 设置notification发生时同时发出默认声音 */  myNoti.defaults = Notification.DEFAULT_SOUND;  /* 设置Notification留言条的参数 */  myNoti.setLatestEventInfo(this, contentTitle, contentText, appIntent);  /* 送出Notification */  notificationManager.notify(0, myNoti);  }  @Override  public Context getContext() {  return context;  }  @Override  public SharedPreferences getLoginUserSharedPre() {  return preferences;  }  @Override  public void saveLoginConfig(LoginConfig loginConfig) {  preferences.edit()  .putString(Constant.XMPP_HOST, loginConfig.getXmppHost())  .commit();  preferences.edit()  .putInt(Constant.XMPP_PORT, loginConfig.getXmppPort()).commit();  preferences  .edit()  .putString(Constant.XMPP_SEIVICE_NAME,  loginConfig.getXmppServiceName()).commit();  preferences.edit()  .putString(Constant.USERNAME, loginConfig.getUsername())  .commit();  preferences.edit()  .putString(Constant.PASSWORD, loginConfig.getPassword())  .commit();  preferences.edit()  .putBoolean(Constant.IS_AUTOLOGIN, loginConfig.isAutoLogin())  .commit();  preferences.edit()  .putBoolean(Constant.IS_NOVISIBLE, loginConfig.isNovisible())  .commit();  preferences.edit()  .putBoolean(Constant.IS_REMEMBER, loginConfig.isRemember())  .commit();  preferences.edit()  .putBoolean(Constant.IS_ONLINE, loginConfig.isOnline())  .commit();  preferences.edit()  .putBoolean(Constant.IS_FIRSTSTART, loginConfig.isFirstStart())  .commit();  }  @Override  public LoginConfig getLoginConfig() {  LoginConfig loginConfig = new LoginConfig();  String a = preferences.getString(Constant.XMPP_HOST, null);  String b = getResources().getString(R.string.xmpp_host);  loginConfig.setXmppHost(preferences.getString(Constant.XMPP_HOST,  getResources().getString(R.string.xmpp_host)));  loginConfig.setXmppPort(preferences.getInt(Constant.XMPP_PORT,  getResources().getInteger(R.integer.xmpp_port)));  loginConfig.setUsername(preferences.getString(Constant.USERNAME, null));  loginConfig.setPassword(preferences.getString(Constant.PASSWORD, null));  loginConfig.setXmppServiceName(preferences.getString(  Constant.XMPP_SEIVICE_NAME,  getResources().getString(R.string.xmpp_service_name)));  loginConfig.setAutoLogin(preferences.getBoolean(Constant.IS_AUTOLOGIN,  getResources().getBoolean(R.bool.is_autologin)));  loginConfig.setNovisible(preferences.getBoolean(Constant.IS_NOVISIBLE,  getResources().getBoolean(R.bool.is_novisible)));  loginConfig.setRemember(preferences.getBoolean(Constant.IS_REMEMBER,  getResources().getBoolean(R.bool.is_remember)));  loginConfig.setFirstStart(preferences.getBoolean(  Constant.IS_FIRSTSTART, true));  return loginConfig;  }  @Override  public boolean getUserOnlineState() {  // preferences = getSharedPreferences(Constant.LOGIN_SET,0);  return preferences.getBoolean(Constant.IS_ONLINE, true);  }  @Override  public void setUserOnlineState(boolean isOnline) {  // preferences = getSharedPreferences(Constant.LOGIN_SET,0);  preferences.edit().putBoolean(Constant.IS_ONLINE, isOnline).commit();  }  @Override  public EimApplication getEimApplication() {  return eimApplication;  }  
}