Android如何清除“共享首选项”中的数据？

Question

Dear Friends I want to clear my shared preference I have tried this

     SharedPreferences pref = getActivity().getSharedPreferences(
             "mypassword", getActivity().MODE_PRIVATE);
     Editor editor = pref.edit();

     editor.putString("key_username", "");  
     editor.putString("key_password", ""); 
     editor.commit(); 

but its not working.How can I clear please help me.

Answer 1

To clear the shared preference you need to add this code.

SharedPreferences.Editor.clear();
SharedPreferences.Editor.commit();

Answer 2

have you tried using

editor.apply();

in place of

editor.commit();

Answer 3

Try the following code. It will clear your SharedPreferences.

     SharedPreferences pref = getActivity().getSharedPreferences(
             "mypassword", getActivity().MODE_PRIVATE);
     Editor editor = pref.edit();
     editor.clear(); 
     editor.commit();

Answer 4

This should be used -

SharedPreferences settings = view.getContext().getSharedPreferences("mypassword", 0);
SharedPreferences.Editor editor = settings.edit();
editor.clear();
editor.commit();

Answer 5

Try:

Editor e = pref.edit();
e.remove("key_username");
e.remove("key_password");
e.commit();