SharedPreferences & boolean

问题

I'm trying to set the "isPhysicalTheftEnabled" to false when a method is executed, but this doesn't seem to work. Anyone have any idea?

        SharedPreferences sp = getSharedPreferences("isPhysicalTheftEnabled", MODE_WORLD_READABLE);
        SharedPreferences.Editor ed = sp.edit();
        ed.putBoolean("isPhysicalTheftEnabled", false);

回答1:

Try adding ed.commit().

i.e.:

SharedPreferences sp = getSharedPreferences("isPhysicalTheftEnabled", MODE_WORLD_READABLE);
SharedPreferences.Editor ed = sp.edit();
ed.putBoolean("isPhysicalTheftEnabled", false);
ed.commit();

SharedPreferences.Editors require that you commit anything you change in your SharedPreferences for the changes to apply.

Regarding your comment on Ankit's answer:

To set the checked property of your CheckBox based on the value of the boolean you saved to SharedPreferences, you need something like:

SharedPreferences sp = getSharedPreferences("isPhysicalTheftEnabled", MODE_WORLD_READABLE);
myCheckBox.setChecked(sp.getBoolean("isPhysicsTheftEnabled", [true/false]);

.. in which you pick either true or false for the def_value of .getBoolean() (if the SharedPreferences can't find the boolean).

回答2:

You need to call ed.apply() after changing values in SharedPreferences.

You can also use ed.commit() if you want to check for errors. commit() (unlike apply()) returns false if the data was not (correctly) written to the persistent storage.

回答3:

You need to call editorObject.commit(); after you done with putting data into SP.

For your problem replace your code with below code...

        SharedPreferences sp = getSharedPreferences("isPhysicalTheftEnabled", MODE_WORLD_READABLE);
        SharedPreferences.Editor ed = sp.edit();
        ed.putBoolean("isPhysicalTheftEnabled", false);
        ed.commit();

来源：https://stackoverflow.com/questions/11671141/sharedpreferences-boolean

标签

android

editor

boolean

sharedpreferences