安卓通过openFileInput/openFileOutput读取或保留任意对象

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安卓提供的openFileInput/openFileOutput读取或保留任意对象

public class ObjectSave {    private static UserInfo info;    /**     * 读取文件存储数据     *     * @return 返回数据对象     */    public static Object getObject(String name) {        FileInputStream fi = null;        ObjectInputStream oi = null;        try {            fi = BaseApplication.context.openFileInput(name);            oi = new ObjectInputStream(fi);            return oi.readObject();        } catch (Exception e) {            e.printStackTrace();        } finally {            if (fi != null) {                try {                    fi.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (oi != null) {                try {                    oi.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }        return null;    }    /**     * 将指定文件存储到系统文件夹中     *     * @param name   文件名     * @param object 文件对象     */    public static void SaveObject(String name, Object object) {        FileOutputStream fo = null;        ObjectOutputStream oo = null;        try {            fo = BaseApplication.context.openFileOutput(name,                    Context.MODE_PRIVATE);            oo = new ObjectOutputStream(fo);            oo.writeObject(object);        } catch (Exception e) {            e.printStackTrace();        } finally {            if (fo != null) {                try {                    fo.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (oo != null) {                try {                    oo.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }    /**     * 得到UserInfo类的对象     */    public static UserInfo getUserInfo() {        if (info == null) {            info = (UserInfo) getObject("userinfo.dat");            if (info == null) {                info = new UserInfo();            }        }        return info;    }    /**     * 存储UserInfo类的对象     */    public static void SaveUserInfo(UserInfo userInfo) {        if (info == null) {            info = (UserInfo) getObject("userinfo.dat");            if (info == null) {                info = new UserInfo();            }        }        info = userInfo;        SaveObject("userinfo.dat", info);    }

图中画圈的可以是任意你想保留的对象

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