Android編程思想，面向對象程序設計第三篇——觀察者模式

/**
* 用戶登錄信息管理模塊
* @author LZC
*/
public class UserManager {
private static UserManager mInst = null;
private static Object mLock = new Object();
private boolean mHasLogined = false;
private boolean mIsLogining = false;
private String mUserId = "";
public String mToken = "";//登錄憑證
public String mNickName = "";
public String mUserIcon = "";//用戶頭像
public String mPhoneNum;//手機號
public String mSex;//性別“0”女，“1”代表男
public long mBirth;//生日
public String mEmail;//郵箱
public String mQQ;//QQ


/**
*
* 監聽
*
*/
//登錄
public interface IOnLogin{
void onLogining();
void onLogined();
void onLoginedFailed();
}
//登出
public interface IOnLoginOut{
void onLoginOut();
}
//登錄過期
public interface IOnLoginInvalid{
void onLoginInvalid();
}


public interface IOnUserInfoChange{
void onIconChange(String userIcon);
void onGoldChange(int goldCount);
void onNickNameChange(String nickName);
}
private List mLoginListeners = new ArrayList();
private List mOnLoginOuts = new ArrayList();
private List mOnUserInfoChanges = new ArrayList();
private List mOnLoginInvalids = new ArrayList();
private UserManager(){
}
public static UserManager getInst( ){
if(mInst == null){
synchronized(mLock){
if(mInst == null){
mInst = new UserManager();
}
}
}
return mInst;
}
//添加登錄監聽
public void addLoginListener(IOnLogin listener){
if(mLoginListeners != null && !mLoginListeners.contains(listener)){
mLoginListeners.add(listener);
}
}
//移除登錄監聽
public void removeLoginListener(IOnLogin listener){
if(listener != null && mLoginListeners.contains(listener))
mLoginListeners.remove(listener);
}
//添加登出監聽
public void addLoginOutListener(IOnLoginOut onLoginOut){
if(mOnLoginOuts != null && !mOnLoginOuts.contains(onLoginOut)){
mOnLoginOuts.add(onLoginOut);
}
}
//移除登出監聽
public void removeLoginOutListener(IOnLoginOut onLoginOut){
if(onLoginOut != null && mOnLoginOuts.contains(onLoginOut)){
mOnLoginOuts.remove(onLoginOut);
}
}
//添加用戶信息和變化監聽
public void addUserInfoListener(IOnUserInfoChange onUserInfoChange){
if(onUserInfoChange != null && !mOnUserInfoChanges.contains(onUserInfoChange)){
mOnUserInfoChanges.add(onUserInfoChange);
}
}
//移除用戶信息變化監聽
public void removeUserInfoListener(IOnUserInfoChange onUserInfoChange){
if(onUserInfoChange != null && mOnUserInfoChanges.contains(onUserInfoChange)){
mOnUserInfoChanges.remove(onUserInfoChange);
}
}
//添加登錄失效監聽
public void addLoginInvalidListener(IOnLoginInvalid onLoginInvalid){
if(onLoginInvalid != null && !mOnLoginInvalids.contains(onLoginInvalid)){
mOnLoginInvalids.add(onLoginInvalid);
}
}
//移除登錄失效監聽
public void removeLoginInvalidListener(IOnLoginInvalid onLoginInvalid){
if(onLoginInvalid != null && mOnLoginInvalids.contains(onLoginInvalid)){
mOnLoginInvalids.remove(onLoginInvalid);
}
}
/**
*
* 設置數據
*/
//注銷
public void logout(Context context){
HttpClientInst.removeCookie();
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
mHasLogined = false;
mIsLogining = false;
mUserGold = 0;
mUserId = "";
mNickName = "";
mUserIcon = "";
mToken = "";
mPhoneNum = "";//手機號
mSex = "0";//性別“0”女，“1”代表男
mBirth = 0;//生日
mEmail = "";//郵箱
mQQ = "";//QQ
mIsSign = 0;
UserManager.getInst().updateUserIcon(mUserIcon);
preferencesWrapper.setStringValue(Constants.USER_NAME, "");
preferencesWrapper.setStringValue(Constants.USER_PWD, "");
preferencesWrapper.setStringValue(Constants.USER_LOGIN_TYPE, "");
preferencesWrapper.commit();
if(mOnLoginOuts != null){
for(int idx = 0; idx < mOnLoginOuts.size(); ++ idx){
mOnLoginOuts.get(idx).onLoginOut();
}
}
}
/**
* 此方法只有登錄接口能調用，其他地方不能隨便調用
* @param userBean
* @param hasLogined
*/
//登錄後,設置用戶信息
public void setUserInfo(UserInfoBean userBean, boolean hasLogined){
saveInfo(userBean);
if(hasLogined){
if(!mHasLogined){
mIsLogining = false;
mHasLogined = true;
if(mLoginListeners != null){
for(int idx = 0; idx < mLoginListeners.size(); ++ idx){
try {
mLoginListeners.get(idx).onLogined();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
}
//把用戶信息保存到本地,只有這三個信息保存到本地,為沒登錄時登錄做准備,其他的都要登錄以後才能獲得，所以只能放在全局變量裡面
private void saveInfo( UserInfoBean userBean){
mUserId = userBean.userId;
mUserIcon = userBean.userIcon;
mToken = userBean.token;
mNickName = userBean.nickName;
mPhoneNum = userBean.phoneNum;//手機號
mSex = userBean.sex;//性別“0”女，“1”代表男
mBirth = userBean.birth;//生日
mEmail = userBean.email;//郵箱
mQQ = userBean.qq;//QQ
mIsSign = userBean.isSign;
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
preferencesWrapper.setStringValue(Constants.USER_NAME, userBean.userName);
preferencesWrapper.setStringValue(Constants.USER_PWD,userBean.password);
preferencesWrapper.setStringValue(Constants.USER_LOGIN_TYPE, userBean.loginType);
preferencesWrapper.commit();
}
//設置當前處於登陸中的狀態
public void setLogining(){
mIsLogining = true;
if(mLoginListeners != null){
for(int idx = 0; idx < mLoginListeners.size(); ++ idx){
try {
mLoginListeners.get(idx).onLogining();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}


//設置登錄失敗
public void setLoginFailed() {
mIsLogining = false;
mHasLogined = false;
if(mLoginListeners != null){
for(int idx = 0; idx < mLoginListeners.size(); ++ idx){
try {
mLoginListeners.get(idx).onLoginedFailed();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
public void setLoginOutOfDate(){
mHasLogined = false;
}
/**
* 更改用戶信息後更新用戶數據
*/
//修改密碼後調用
public void updateUserPassword(String password,Context context) {
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
preferencesWrapper.setStringValue(Constants.USER_PWD, password);
preferencesWrapper.commit();
}


//修改頭像後調用
public void updateUserIcon(String userIcon){
mUserIcon = userIcon;
for(int i = 0; i < mOnUserInfoChanges.size(); i ++){
mOnUserInfoChanges.get(i).onIconChange(mUserIcon);
}
}
//修改昵稱後調用
public void updateNickName(String nickName){
mNickName = nickName;
for(int i = 0; i < mOnUserInfoChanges.size(); i ++){
mOnUserInfoChanges.get(i).onNickNameChange(mNickName);
}
}
/***
* 獲取數據
*/
//判斷當前是否是正在登陸中的狀態
public boolean isLogining(){
return mIsLogining;
}
public boolean isLogined(){
return mHasLogined;
}
public ProtocolLogin createLoginProtocol(Context context, IProtocolListener listener){


return new ProtocolLogin(context,ProtocolLogin.TYPE_AUTO, getLoginType(), getUserName(), getPassword(), listener);
}


public String getLoginType() {
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
return preferencesWrapper.getStringValue(Constants.USER_LOGIN_TYPE, "");
}


//獲取用戶名
public String getUserName(){
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
return preferencesWrapper.getStringValue(Constants.USER_NAME, "");
}


//獲取密碼
public String getPassword(){
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
return preferencesWrapper.getStringValue(Constants.USER_PWD, "");
}


//是否可以自動登錄
public boolean canAutoLogin(){
PreferenceWrapper preferencesWrapper = new PreferenceWrapper();
String username = preferencesWrapper.getStringValue(Constants.USER_NAME, "");
String password = preferencesWrapper.getStringValue(Constants.USER_PWD, "");
return !(TextUtils.isEmpty(username) || TextUtils.isEmpty(password));
}
//用戶id
public String getUserId(){
return mUserId;
}


//用戶登錄令牌
public String getToken(){
return mToken;
}


//用戶圖標
public String getUserIcon(){
return mUserIcon;
}




//用戶昵稱
public String getNickName(){
return mNickName;
}




public String getmPhoneNum() {
return mPhoneNum;
}




public String getmSex() {
return mSex;
}




public long getmBirth() {
return mBirth;
}




public String getmEmail() {
return mEmail;
}




public String getmQQ() {
return mQQ;
}


}

private static UserManager mInst = null;
public static UserManager getInst( ){
if(mInst == null){
synchronized(mLock){
if(mInst == null){
mInst = new UserManager();
}
}
}
return mInst;
}

public void addUserInfoListener(IOnUserInfoChange onUserInfoChange){
if(onUserInfoChange != null && !mOnUserInfoChanges.contains(onUserInfoChange)){
mOnUserInfoChanges.add(onUserInfoChange);
}
}
如果頭像發生了修改則調用
public void updateUserIcon(String userIcon){
mUserIcon = userIcon;
for(int i = 0; i < mOnUserInfoChanges.size(); i ++){
mOnUserInfoChanges.get(i).onIconChange(mUserIcon);
}
}

public void removeUserInfoListener(IOnUserInfoChange onUserInfoChange){
if(onUserInfoChange != null && mOnUserInfoChanges.contains(onUserInfoChange)){
mOnUserInfoChanges.remove(onUserInfoChange);
}
}