How to save checkbox value with shared preferences?

Question

I don\'t know why my code not save checkbox checked value; if I check checkbox and after I click on another tab and comeback to previous tab,

Answer 1

@Override

    protected void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);



        checkBox = (CheckBox) findViewById(R.id.checkBox1);                          
        SavedPreferences();

    }


    private void savePreferences(boolean value) {

        SharedPreferences sharedPreferences = PreferenceManager

                .getDefaultSharedPreferences(this);

        Editor editor = sharedPreferences.edit();

        editor.putBoolean(value);

        editor.commit();

    }





public class activity2 extends fragment{

       public onCreateView extends Fragment {
        SharedPreferences sharedPreferences = PreferenceManager

                .getDefaultSharedPreferences(this);

        boolean checkBoxValue = sharedPreferences.getBoolean("CheckBox_Value", false);    

        if (checkBoxValue) {

            checkBox.setChecked(true);

        } else {

            checkBox.setChecked(false);

        }


    }



    }

Answer 2

 @Override
 public void afterTextChanged(Editable s) {
                        p.setQuantità(finalHolder.edit.getText().toString().trim());
                        SharedPreferences preferences = getContext().getSharedPreferences("PROJECT_NAME", android.content.Context.MODE_PRIVATE);
                        SharedPreferences.Editor editor = preferences.edit();
                        editor.putString("KEY", finalHolder.edit.getText().toString().trim());
                        editor.putBoolean("CheckBox_Value", finalHolder.chkBox.isChecked());
                        editor.commit();

}

and then retrieve it using getBoolean as you have already done

Answer 3

You can store boolean values on shared preferences. Here's an example.

SharedPreferences myPrefs;
SharedPreferences.Editor myPrefsPrefsEditor;
static final String MY_SHARED_PREF = "name_of_your_shared_pref";

Initialize your shared preferences

myPrefs = this.getSharedPreferences(MY_SHARED_PREF, Context.MODE_PRIVATE);

Store your values using the following.

myPrefsPrefsEditor = myPrefs.edit();
myPrefsPrefsEditor.putBoolean(key, value);
myPrefsPrefsEditor.commit();

key = use to find the value from shared pref

value = the value you want to store

This is how your read your values

myPrefs.getBoolean(key, defaultValue);

key = the key of the value you want to get

defaultValue = the default value when there's no value for the given key.

Hope this helps.