基于xmpp openfire smack开发之Android客户端开发[3]

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

基于xmpp openfire smack开发之openfire介绍和部署[1]

基于xmpp openfire smack开发之smack类库介绍和使用[2]

 

1.源码结构介绍

基于xmpp openfire smack开发之Android客户端开发[3]_第1张图片

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


基于xmpp openfire smack开发之Android客户端开发[3]_第2张图片

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

   
    5222 
    talk.google.com 
    gmail.com
    true
    false
    false 

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

 	
	
	
 	
 	
 	
    	
    	
    	
    	

2.核心类介绍

1.ActivitySupport类
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;
	}
}

大家写android程序会发现,不同的activity之间经常需要调用一些公共的资源,这里的资源不仅包括android自身的,还有我们自己的管理服务类,甚至相互之间传递一些参数,这里我仿照struts2的设计,提炼出一个ActivitySupport类,同时抽取一个接口,让所有的Activity都集成这个类,因为有了接口,我们便可以采用回调模式,非常方便的传递数据和使用公共的资源,这种好处相信大家使用之后都能有深刻的体会,通过接口回调传递参数和相互调用的方式无疑是最优雅的,spring和hibernate源码中曾经大量使用这种结构。

2.SQLiteTemplate类
package csdn.shimiso.eim.db;

import java.util.ArrayList;
import java.util.List;

import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

/**
 * SQLite数据库模板工具类
 * 
 * 该类提供了数据库操作常用的增删改查,以及各种复杂条件匹配,分页,排序等操作
 * 
 * @see SQLiteDatabase
 */
public class SQLiteTemplate {
	/**
	 * Default Primary key
	 */
	protected String mPrimaryKey = "_id";

	/**
	 * DBManager
	 */
	private DBManager dBManager;
	/**
	 * 是否为一个事务
	 */
	private boolean isTransaction = false;
	/**
	 * 数据库连接
	 */
	private SQLiteDatabase dataBase = null;

	private SQLiteTemplate() {
	}

	private SQLiteTemplate(DBManager dBManager, boolean isTransaction) {
		this.dBManager = dBManager;
		this.isTransaction = isTransaction;
	}

	/**
	 * isTransaction 是否属于一个事务 注:一旦isTransaction设为true
	 * 所有的SQLiteTemplate方法都不会自动关闭资源,需在事务成功后手动关闭
	 * 
	 * @return
	 */
	public static SQLiteTemplate getInstance(DBManager dBManager,
			boolean isTransaction) {
		return new SQLiteTemplate(dBManager, isTransaction);
	}

	/**
	 * 执行一条sql语句
	 * 
	 * @param name
	 * @param tel
	 */
	public void execSQL(String sql) {
		try {
			dataBase = dBManager.openDatabase();
			dataBase.execSQL(sql);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
	}

	/**
	 * 执行一条sql语句
	 * 
	 * @param name
	 * @param tel
	 */
	public void execSQL(String sql, Object[] bindArgs) {
		try {
			dataBase = dBManager.openDatabase();
			dataBase.execSQL(sql, bindArgs);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
	}

	/**
	 * 向数据库表中插入一条数据
	 * 
	 * @param table
	 *            表名
	 * @param content
	 *            字段值
	 */
	public long insert(String table, ContentValues content) {
		try {
			dataBase = dBManager.openDatabase();
			// insert方法第一参数:数据库表名,第二个参数如果CONTENT为空时则向表中插入一个NULL,第三个参数为插入的内容
			return dataBase.insert(table, null, content);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 批量删除指定主键数据
	 * 
	 * @param ids
	 */
	public void deleteByIds(String table, Object... primaryKeys) {
		try {
			if (primaryKeys.length > 0) {
				StringBuilder sb = new StringBuilder();
				for (@SuppressWarnings("unused")
				Object id : primaryKeys) {
					sb.append("?").append(",");
				}
				sb.deleteCharAt(sb.length() - 1);
				dataBase = dBManager.openDatabase();
				dataBase.execSQL("delete from " + table + " where "
						+ mPrimaryKey + " in(" + sb + ")",
						(Object[]) primaryKeys);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
	}

	/**
	 * 根据某一个字段和值删除一行数据, 如 name="jack"
	 * 
	 * @param table
	 * @param field
	 * @param value
	 * @return 返回值大于0表示删除成功
	 */
	public int deleteByField(String table, String field, String value) {
		try {
			dataBase = dBManager.openDatabase();
			return dataBase.delete(table, field + "=?", new String[] { value });
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 根据条件删除数据
	 * 
	 * @param table
	 *            表名
	 * @param whereClause
	 *            查询语句 参数采用?
	 * @param whereArgs
	 *            参数值
	 * @return 返回值大于0表示删除成功
	 */
	public int deleteByCondition(String table, String whereClause,
			String[] whereArgs) {
		try {
			dataBase = dBManager.openDatabase();
			return dataBase.delete(table, whereClause, whereArgs);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 根据主键删除一行数据
	 * 
	 * @param table
	 * @param id
	 * @return 返回值大于0表示删除成功
	 */
	public int deleteById(String table, String id) {
		try {
			dataBase = dBManager.openDatabase();
			return deleteByField(table, mPrimaryKey, id);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 根据主键更新一行数据
	 * 
	 * @param table
	 * @param id
	 * @param values
	 * @return 返回值大于0表示更新成功
	 */
	public int updateById(String table, String id, ContentValues values) {
		try {
			dataBase = dBManager.openDatabase();
			return dataBase.update(table, values, mPrimaryKey + "=?",
					new String[] { id });
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 更新数据
	 * 
	 * @param table
	 * @param values
	 * @param whereClause
	 * @param whereArgs
	 * @return 返回值大于0表示更新成功
	 */
	public int update(String table, ContentValues values, String whereClause,
			String[] whereArgs) {
		try {
			dataBase = dBManager.openDatabase();
			return dataBase.update(table, values, whereClause, whereArgs);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return 0;
	}

	/**
	 * 根据主键查看某条数据是否存在
	 * 
	 * @param table
	 * @param id
	 * @return
	 */
	public Boolean isExistsById(String table, String id) {
		try {
			dataBase = dBManager.openDatabase();
			return isExistsByField(table, mPrimaryKey, id);
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return null;
	}

	/**
	 * 根据某字段/值查看某条数据是否存在
	 * 
	 * @param status
	 * @return
	 */
	public Boolean isExistsByField(String table, String field, String value) {
		StringBuilder sql = new StringBuilder();
		sql.append("SELECT COUNT(*) FROM ").append(table).append(" WHERE ")
				.append(field).append(" =?");
		try {
			dataBase = dBManager.openDatabase();
			return isExistsBySQL(sql.toString(), new String[] { value });
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(null);
			}
		}
		return null;
	}

	/**
	 * 使用SQL语句查看某条数据是否存在
	 * 
	 * @param sql
	 * @param selectionArgs
	 * @return
	 */
	public Boolean isExistsBySQL(String sql, String[] selectionArgs) {
		Cursor cursor = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.rawQuery(sql, selectionArgs);
			if (cursor.moveToFirst()) {
				return (cursor.getInt(0) > 0);
			} else {
				return false;
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return null;
	}

	/**
	 * 查询一条数据
	 * 
	 * @param rowMapper
	 * @param sql
	 * @param args
	 * @return
	 */
	public  T queryForObject(RowMapper rowMapper, String sql,
			String[] args) {
		Cursor cursor = null;
		T object = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.rawQuery(sql, args);
			if (cursor.moveToFirst()) {
				object = rowMapper.mapRow(cursor, cursor.getCount());
			}
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return object;

	}

	/**
	 * 查询
	 * 
	 * @param rowMapper
	 * @param sql
	 * @param startResult
	 *            开始索引 注:第一条记录索引为0
	 * @param maxResult
	 *            步长
	 * @return
	 */
	public  List queryForList(RowMapper rowMapper, String sql,
			String[] selectionArgs) {
		Cursor cursor = null;
		List list = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.rawQuery(sql, selectionArgs);
			list = new ArrayList();
			while (cursor.moveToNext()) {
				list.add(rowMapper.mapRow(cursor, cursor.getPosition()));
			}
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return list;
	}

	/**
	 * 分页查询
	 * 
	 * @param rowMapper
	 * @param sql
	 * @param startResult
	 *            开始索引 注:第一条记录索引为0
	 * @param maxResult
	 *            步长
	 * @return
	 */
	public  List queryForList(RowMapper rowMapper, String sql,
			int startResult, int maxResult) {
		Cursor cursor = null;
		List list = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.rawQuery(sql + " limit ?,?", new String[] {
					String.valueOf(startResult), String.valueOf(maxResult) });
			list = new ArrayList();
			while (cursor.moveToNext()) {
				list.add(rowMapper.mapRow(cursor, cursor.getPosition()));
			}
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return list;
	}

	/**
	 * 获取记录数
	 * 
	 * @return
	 */
	public Integer getCount(String sql, String[] args) {
		Cursor cursor = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.rawQuery("select count(*) from (" + sql + ")",
					args);
			if (cursor.moveToNext()) {
				return cursor.getInt(0);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return 0;
	}

	/**
	 * 分页查询
	 * 
	 * @param rowMapper
	 * @param table
	 *            检索的表
	 * @param columns
	 *            由需要返回列的列名所组成的字符串数组,传入null会返回所有的列。
	 * @param selection
	 *            查询条件子句,相当于select语句where关键字后面的部分,在条件子句允许使用占位符"?"
	 * @param selectionArgs
	 *            对应于selection语句中占位符的值,值在数组中的位置与占位符在语句中的位置必须一致,否则就会有异常
	 * @param groupBy
	 *            对结果集进行分组的group by语句(不包括GROUP BY关键字)。传入null将不对结果集进行分组
	 * @param having
	 *            对查询后的结果集进行过滤,传入null则不过滤
	 * @param orderBy
	 *            对结果集进行排序的order by语句(不包括ORDER BY关键字)。传入null将对结果集使用默认的排序
	 * @param limit
	 *            指定偏移量和获取的记录数,相当于select语句limit关键字后面的部分,如果为null则返回所有行
	 * @return
	 */
	public  List queryForList(RowMapper rowMapper, String table,
			String[] columns, String selection, String[] selectionArgs,
			String groupBy, String having, String orderBy, String limit) {
		List list = null;
		Cursor cursor = null;
		try {
			dataBase = dBManager.openDatabase();
			cursor = dataBase.query(table, columns, selection, selectionArgs,
					groupBy, having, orderBy, limit);
			list = new ArrayList();
			while (cursor.moveToNext()) {
				list.add(rowMapper.mapRow(cursor, cursor.getPosition()));
			}
		} finally {
			if (!isTransaction) {
				closeDatabase(cursor);
			}
		}
		return list;
	}

	/**
	 * Get Primary Key
	 * 
	 * @return
	 */
	public String getPrimaryKey() {
		return mPrimaryKey;
	}

	/**
	 * Set Primary Key
	 * 
	 * @param primaryKey
	 */
	public void setPrimaryKey(String primaryKey) {
		this.mPrimaryKey = primaryKey;
	}

	/**
	 * 
	 * @author shimiso
	 * 
	 * @param 
	 */
	public interface RowMapper {
		/**
		 * 
		 * @param cursor
		 *            游标
		 * @param index
		 *            下标索引
		 * @return
		 */
		public T mapRow(Cursor cursor, int index);
	}

	/**
	 * 关闭数据库
	 */
	public void closeDatabase(Cursor cursor) {
		if (null != dataBase) {
			dataBase.close();
		}
		if (null != cursor) {
			cursor.close();
		}
	}
}

我们希望在android操作数据库是优雅的一种方式,这里不必关注事务,也不用担心分页,更不用为了封装传递对象烦恼,总之一切就像面向对象那样,简单,模板类的出现正是解决这个问题,虽然它看上去可能不是那么完美有待提高,这里我封装了很多sqlite常用的工具,大家可以借鉴使用。

3.XmppConnectionManager管理类
package csdn.shimiso.eim.manager;

import org.jivesoftware.smack.Connection;
import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.Roster;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.provider.ProviderManager;
import org.jivesoftware.smackx.GroupChatInvitation;
import org.jivesoftware.smackx.PrivateDataManager;
import org.jivesoftware.smackx.packet.ChatStateExtension;
import org.jivesoftware.smackx.packet.LastActivity;
import org.jivesoftware.smackx.packet.OfflineMessageInfo;
import org.jivesoftware.smackx.packet.OfflineMessageRequest;
import org.jivesoftware.smackx.packet.SharedGroupsInfo;
import org.jivesoftware.smackx.provider.DataFormProvider;
import org.jivesoftware.smackx.provider.DelayInformationProvider;
import org.jivesoftware.smackx.provider.DiscoverInfoProvider;
import org.jivesoftware.smackx.provider.DiscoverItemsProvider;
import org.jivesoftware.smackx.provider.MUCAdminProvider;
import org.jivesoftware.smackx.provider.MUCOwnerProvider;
import org.jivesoftware.smackx.provider.MUCUserProvider;
import org.jivesoftware.smackx.provider.MessageEventProvider;
import org.jivesoftware.smackx.provider.MultipleAddressesProvider;
import org.jivesoftware.smackx.provider.RosterExchangeProvider;
import org.jivesoftware.smackx.provider.StreamInitiationProvider;
import org.jivesoftware.smackx.provider.VCardProvider;
import org.jivesoftware.smackx.provider.XHTMLExtensionProvider;
import org.jivesoftware.smackx.search.UserSearch;

import csdn.shimiso.eim.model.LoginConfig;

/**
 * 
 * XMPP服务器连接工具类.
 * 
 * @author shimiso
 */
public class XmppConnectionManager {
	private XMPPConnection connection;
	private static ConnectionConfiguration connectionConfig;
	private static XmppConnectionManager xmppConnectionManager;

	private XmppConnectionManager() {

	}

	public static XmppConnectionManager getInstance() {
		if (xmppConnectionManager == null) {
			xmppConnectionManager = new XmppConnectionManager();
		}
		return xmppConnectionManager;
	}

	// init
	public XMPPConnection init(LoginConfig loginConfig) {
		Connection.DEBUG_ENABLED = false;
		ProviderManager pm = ProviderManager.getInstance();
		configure(pm);

		connectionConfig = new ConnectionConfiguration(
				loginConfig.getXmppHost(), loginConfig.getXmppPort(),
				loginConfig.getXmppServiceName());
		connectionConfig.setSASLAuthenticationEnabled(false);// 不使用SASL验证,设置为false
		connectionConfig
				.setSecurityMode(ConnectionConfiguration.SecurityMode.enabled);
		// 允许自动连接
		connectionConfig.setReconnectionAllowed(false);
		// 允许登陆成功后更新在线状态
		connectionConfig.setSendPresence(true);
		// 收到好友邀请后manual表示需要经过同意,accept_all表示不经同意自动为好友
		Roster.setDefaultSubscriptionMode(Roster.SubscriptionMode.manual);
		connection = new XMPPConnection(connectionConfig);
		return connection;
	}

	/**
	 * 
	 * 返回一个有效的xmpp连接,如果无效则返回空.
	 * 
	 * @return
	 * @author shimiso
	 * @update 2012-7-4 下午6:54:31
	 */
	public XMPPConnection getConnection() {
		if (connection == null) {
			throw new RuntimeException("请先初始化XMPPConnection连接");
		}
		return connection;
	}

	/**
	 * 
	 * 销毁xmpp连接.
	 * 
	 * @author shimiso
	 * @update 2012-7-4 下午6:55:03
	 */
	public void disconnect() {
		if (connection != null) {
			connection.disconnect();
		}
	}

	public void configure(ProviderManager pm) {

		// Private Data Storage
		pm.addIQProvider("query", "jabber:iq:private",
				new PrivateDataManager.PrivateDataIQProvider());

		// Time
		try {
			pm.addIQProvider("query", "jabber:iq:time",
					Class.forName("org.jivesoftware.smackx.packet.Time"));
		} catch (ClassNotFoundException e) {
		}

		// XHTML
		pm.addExtensionProvider("html", "http://jabber.org/protocol/xhtml-im",
				new XHTMLExtensionProvider());

		// Roster Exchange
		pm.addExtensionProvider("x", "jabber:x:roster",
				new RosterExchangeProvider());
		// Message Events
		pm.addExtensionProvider("x", "jabber:x:event",
				new MessageEventProvider());
		// Chat State
		pm.addExtensionProvider("active",
				"http://jabber.org/protocol/chatstates",
				new ChatStateExtension.Provider());
		pm.addExtensionProvider("composing",
				"http://jabber.org/protocol/chatstates",
				new ChatStateExtension.Provider());
		pm.addExtensionProvider("paused",
				"http://jabber.org/protocol/chatstates",
				new ChatStateExtension.Provider());
		pm.addExtensionProvider("inactive",
				"http://jabber.org/protocol/chatstates",
				new ChatStateExtension.Provider());
		pm.addExtensionProvider("gone",
				"http://jabber.org/protocol/chatstates",
				new ChatStateExtension.Provider());

		// FileTransfer
		pm.addIQProvider("si", "http://jabber.org/protocol/si",
				new StreamInitiationProvider());

		// Group Chat Invitations
		pm.addExtensionProvider("x", "jabber:x:conference",
				new GroupChatInvitation.Provider());
		// Service Discovery # Items
		pm.addIQProvider("query", "http://jabber.org/protocol/disco#items",
				new DiscoverItemsProvider());
		// Service Discovery # Info
		pm.addIQProvider("query", "http://jabber.org/protocol/disco#info",
				new DiscoverInfoProvider());
		// Data Forms
		pm.addExtensionProvider("x", "jabber:x:data", new DataFormProvider());
		// MUC User
		pm.addExtensionProvider("x", "http://jabber.org/protocol/muc#user",
				new MUCUserProvider());
		// MUC Admin
		pm.addIQProvider("query", "http://jabber.org/protocol/muc#admin",
				new MUCAdminProvider());
		// MUC Owner
		pm.addIQProvider("query", "http://jabber.org/protocol/muc#owner",
				new MUCOwnerProvider());
		// Delayed Delivery
		pm.addExtensionProvider("x", "jabber:x:delay",
				new DelayInformationProvider());
		// Version
		try {
			pm.addIQProvider("query", "jabber:iq:version",
					Class.forName("org.jivesoftware.smackx.packet.Version"));
		} catch (ClassNotFoundException e) {
		}
		// VCard
		pm.addIQProvider("vCard", "vcard-temp", new VCardProvider());
		// Offline Message Requests
		pm.addIQProvider("offline", "http://jabber.org/protocol/offline",
				new OfflineMessageRequest.Provider());
		// Offline Message Indicator
		pm.addExtensionProvider("offline",
				"http://jabber.org/protocol/offline",
				new OfflineMessageInfo.Provider());
		// Last Activity
		pm.addIQProvider("query", "jabber:iq:last", new LastActivity.Provider());
		// User Search
		pm.addIQProvider("query", "jabber:iq:search", new UserSearch.Provider());
		// SharedGroupsInfo
		pm.addIQProvider("sharedgroup",
				"http://www.jivesoftware.org/protocol/sharedgroup",
				new SharedGroupsInfo.Provider());
		// JEP-33: Extended Stanza Addressing
		pm.addExtensionProvider("addresses",
				"http://jabber.org/protocol/address",
				new MultipleAddressesProvider());

	}
}

这个类是xmpp连接的管理类,如果大家使用smack的api对这个应该不会陌生,asmack对xmpp连接的管理,与smack的差别不大,但是部分细微区别也有,我们在使用中如果遇到问题,还要多加注意,我们这里将其设计成单例,毕竟重复创建连接是个非常消耗的过程。

3.演示效果

 

基于xmpp openfire smack开发之Android客户端开发[3]_第3张图片  基于xmpp openfire smack开发之Android客户端开发[3]_第4张图片  基于xmpp openfire smack开发之Android客户端开发[3]_第5张图片 

很像QQ吧,没错,这是2012年版本qq的安卓界面,只是界面元素一样,实现方式大不相同,下面简单列一下这个客户端实现的功能:
1.聊天
2.离线消息
3.添加,删除好友
4.添加,移动好友分组
5.设置昵称
6.监控好友状态
7.网络断开系统自动重连接
8.收到添加好友请求消息处理
9.收到系统广播消息处理
10.查看历史聊天记录
11.消息弹出提醒,和小气泡
....
因为时间关系不是很完美,主要用于学习研究,欢迎大家给我提bug和改进意见。

4.源码下载

分数比较大,不是为了坑大家,是怕有伸手党出现,拿了源码出去招摇撞骗,请尊重作者原创!




参阅文献
Openfirehttp://www.igniterealtime.org/
push-notificationhttp://www.push-notification.org/
Claros chathttp://www.claros.org/
androidpnsourceforgehttp://sourceforge.net/projects/androidpn/
android消息推送解决方案http://www.cnblogs.com/hanyonglu/archive/2012/03/04/2378971.html
xmpp协议实现原理介绍 http://www.cnblogs.com/hanyonglu/archive/2012/03/04/2378956.html


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