android程序数据保存在单例模式中，保存在内存中，会oom吗

Question

```package com.amt.appstore.cache;

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

import android.content.pm.PackageInfo;

import com.amt.appstore.download.DownItem;
import com.amt.appstore.model.AboutFirm;
import com.amt.appstore.model.AmtApplication;
import com.amt.appstore.model.CategoryJson;
import com.amt.appstore.model.Column;
import com.amt.appstore.model.HotWordJson;
import com.amt.appstore.model.NoticeJson;
import com.amt.appstore.model.RecommendLocation;
import com.amt.appstore.model.RecommendPage;
import com.amt.appstore.model.User;

public class DataCenter {
// 私有化构造函数
private DataCenter() {
};

// 已经自行实例化
private static DataCenter dataCenter = new DataCenter();
/**
 * 机顶盒的MAC地址
 */
private String mac = "";
/**
 * 机顶盒的token值
 */
private String token = "";
/**
 * 所有的用户列表
 */
private ArrayList<User> mAllUsers = null;
/**
 * 应用列表
 */
private ArrayList<AmtApplication> mAmtApplications = null;

/**
 * 栏目列表
 */
private ArrayList<Column> mColumns = null;

/**
 * 推荐位的集合
 */
private ArrayList<RecommendLocation> mRecommendLocations;
/**
 * 推荐页的集合
 */
private ArrayList<RecommendPage> mRecommendPages = null;

/**
 * 最新的推荐页集合
 */
private ArrayList<RecommendPage> newRecommendPages = null;

/**
 * 左边导航栏的文字
 */
private String leftText;

/**
 * 热词
 */
private HotWordJson hotWord = null;

/**
 * 是否是新的推荐页
 */
private boolean isNewRecommendPage = false;
/**
 * 是否是从广告页面进入该应用
 */
private boolean isFirst = true;
/**
 * 应用
 */
private AmtApplication mAmtApplication2;
/**
 * 类别类
 */
private CategoryJson mCategoryJson;
/**
 * 通知类
 */
private NoticeJson mNoticeJson;
/**
 * 更新应用的列表
 */
private List<DownItem> updateList;
/**
 * 强制更新应用的列表
 */
private List<DownItem> forcedUpdateList;
/**
 * 强制卸载应用的列表
 */
private List<PackageInfo> uninstallList;

/**
 * 下载应用的列表
 */
private List<DownItem> downList;
/**
 * 用户信息
 */
private User user;
/**
 * 头像列表的url
 */
private List<String> headList;
/**
 * 关于公司的数据
 */
private AboutFirm aboutFirm;
/**
 * 外部跳转数据
 */
private String wallName;
/**
 * IPTV帐号
 */
private String accountIPTV;

/**
 * 单例模式
 * 
 * @return
 */
public static DataCenter getInstance() {

    return dataCenter;
}

public void clearAll() {
    dataCenter = new DataCenter();
}

public void setUsersContent(ArrayList<User> mAllUsers) {
    this.mAllUsers = mAllUsers;
}

public ArrayList<User> getUsersContent() {
    return mAllUsers;
}

public void setAmtAppContent(ArrayList<AmtApplication> mAmtApplications) {
    this.mAmtApplications = mAmtApplications;
}

public ArrayList<AmtApplication> getAmtAppContent() {
    return mAmtApplications;
}

public void setRecommendPage(ArrayList<RecommendPage> mRecommendPages) {

    this.mRecommendPages = mRecommendPages;
}

public ArrayList<RecommendPage> getRecommendPage() {
    return this.mRecommendPages;
}

public void setColumn(ArrayList<Column> mColumns) {
    this.mColumns = mColumns;
}

public ArrayList<Column> getColumn() {
    return mColumns;
}

public void setRecommendLocation(ArrayList<RecommendLocation> mRecommendLocations) {
    this.mRecommendLocations = mRecommendLocations;
}

public ArrayList<RecommendLocation> getRecommendLocation() {
    return mRecommendLocations;
}

public String getMac() {
    return mac;
}

public void setMac(String mac) {
    this.mac = mac;
}

public String getToken() {
    return token;
}

public void setToken(String token) {
    this.token = token;
}

public AmtApplication getmAmtApplication() {
    return mAmtApplication2;
}

public void setmAmtApplication(AmtApplication mAmtApplication2) {
    this.mAmtApplication2 = mAmtApplication2;
}

public CategoryJson getmCategoryJson() {
    return mCategoryJson;
}

public void setmCategoryJson(CategoryJson mCategoryJson) {
    this.mCategoryJson = mCategoryJson;
}

public NoticeJson getmNoticeJson() {
    return mNoticeJson;
}

public void setmNoticeJson(NoticeJson mNoticeJson) {
    this.mNoticeJson = mNoticeJson;
}

public User getUser() {
    return user;
}

public void setUser(User user) {
    this.user = user;
}

public List<String> getHeadList() {
    return headList;
}

public void setHeadList(List<String> headList) {
    this.headList = headList;
}

public AboutFirm getAboutFirm() {
    return aboutFirm;
}

public void setAboutFirm(AboutFirm aboutFirm) {
    this.aboutFirm = aboutFirm;
}

public List<DownItem> getDownList() {
    return downList;
}

public void setDownList(List<DownItem> downList) {
    this.downList = downList;
}

public List<DownItem> getForcedUpdateList() {
    return forcedUpdateList;
}

public void setForcedUpdateList(List<DownItem> forcedUpdateList) {
    this.forcedUpdateList = forcedUpdateList;
}

public List<PackageInfo> getUninstallList() {
    return uninstallList;
}

public void setUninstallList(List<PackageInfo> uninstallList) {
    this.uninstallList = uninstallList;
}

public ArrayList<RecommendPage> getNewRecommendPages() {
    return newRecommendPages;
}

public void setNewRecommendPages(ArrayList<RecommendPage> newRecommendPages) {
    this.newRecommendPages = newRecommendPages;
}

public boolean isNewRecommendPage() {
    return isNewRecommendPage;
}

public void setNewRecommendPage(boolean isNewRecommendPage) {
    this.isNewRecommendPage = isNewRecommendPage;
}

public boolean isFirst() {
    return isFirst;
}

public void setFirst(boolean isFirst) {
    this.isFirst = isFirst;
}

public List<DownItem> getUpdateList() {
    return updateList;
}

public void setUpdateList(List<DownItem> updateList) {
    this.updateList = updateList;
}

public HotWordJson getHotWord() {
    return hotWord;
}

public void setHotWord(HotWordJson hotWord) {
    this.hotWord = hotWord;
}

public String getLeftText() {
    return leftText;
}

public void setLeftText(String leftText) {
    this.leftText = leftText;
}

public String getWallName() {
    return wallName;
}

public void setWallName(String wallName) {
    this.wallName = wallName;
}

public String getAccountIPTV() {
    return accountIPTV;
}

public void setAccountIPTV(String accountIPTV) {
    this.accountIPTV = accountIPTV;
}

}

如上所示，我的android程序中所有的数据，包括各种集合都放在这个单例模式中，保存在内存中，这样好嘛？？有更好的办法吗

Answer 1

这样的保存方式，会oom吗