当我从服务器获取数据时，无法从Android端设置登录注销会话

Question

i am work on ODOO base application and store user details to ODOO server but can not do login and logout from server that i have to manage from android side so i have use session management from android side.First i have login to my application login successfully but when second time login but details fetch of first user.how to logout from server side using android.

public class SharedPref {

    public SharedPreferences pref;
    public SharedPreferences.Editor editor;


    public SharedPref(Context context) {
        this.pref = context.getSharedPreferences("P1m2h3spellbound", Context.MODE_PRIVATE);

    }


    public void
    save(String key, String value) {
        // TODO Auto-generated method stub
        SharedPreferences.Editor editor = pref.edit();
        editor.putString(key, value);
        editor.commit();
    }

    public void save(String key, Boolean value) {
        // TODO Auto-generated method stub
        SharedPreferences.Editor editor = pref.edit();
        editor.putBoolean(key, value);
        editor.commit();
    }

    public void save(String key, int value) {
        // TODO Auto-generated method stub
        SharedPreferences.Editor editor = pref.edit();
        editor.putInt(key, value);
        editor.commit();
    }

    public int load(String key, int def) {
        // TODO Auto-generated method stub
        int i = pref.getInt(key, def);
        return i;
    }

    public String load(String key, String def) {
        // TODO Auto-generated method stub
        String strSaved = pref.getString(key, def);
        return strSaved;
    }

    public Boolean load(String key, boolean def) {
        // TODO Auto-generated method stub
        boolean isbool = pref.getBoolean(key, def);
        return isbool;
    }

    public void logoutapp() {
        // TODO Auto-generated method stub
        SharedPreferences.Editor editor = pref.edit();
        boolean isZoomGuide = load("isZoomGuide", false);
        String ip = load("server_ip", "");
        String port = load("server_port", "");
        String db = load("server_db", "");
        editor.clear();
        editor.commit();

        save("isZoomGuide", isZoomGuide);
        save("server_ip", ip);
        save("server_port", port);
        save("server_db", db);
        save("isServer", true);

    }
}

Answer 1

First, if you have an attribute in your class as public SharedPreferences.Editor editor; why are you creating a different Editor on every save method? Also in the logoutapp method you can use your editor.

I'm not getting what you are trying to do on this method, let's go step by step

public void logoutapp() {
    // TODO Auto-generated method stub
    SharedPreferences.Editor editor = pref.edit();
    boolean isZoomGuide = load("isZoomGuide", false);
    String ip = load("server_ip", "");
    String port = load("server_port", "");
    String db = load("server_db", "");
    editor.clear();
    editor.commit();

    save("isZoomGuide", isZoomGuide);
    save("server_ip", ip);
    save("server_port", port);
    save("server_db", db);
    save("isServer", true);

}

First you want to load and store some values stored on SharedPreferences into a variables. Then you clear() I guess you know will remove all values from the preferences. Once commit is called, the only remaining preferences will be any that you have defined in this editor.

Then I see a commit() but I'm not seeing you are storing its result, so you just can use apply() . And then you save the values stored previously.

What I don't get is, do you need to remove all data from SharedPreferences ? I don't think so, since you are storing the same values again. You can use remove(String key) to remove a specific item stored in your SharedPreferences .

Also I'd like to see how do you Log out from the app and how you Log in to the app to clear my doubts.