Question

I have a SettingsActivity ( extends PreferenceActivity ) , which is loaded from a preferences.xml file(res–>xml–>preferences.xml).

The preferences.xml is this:

<?xml version="1.0" encoding="utf-8"?>

<PreferenceCategory android:title="Patient&apos;s Settings" >
    <EditTextPreference
        android:defaultValue="Not Set"
        android:key="patientMobile"
        android:title="mobile number" />
</PreferenceCategory>
<PreferenceCategory android:title="Doctor&apos;s Settings" >
    <EditTextPreference
        android:defaultValue="Not Set"
        android:key="docEmail"
        android:title="e-mail" />
    <EditTextPreference
        android:defaultValue="Not Set"
        android:key="docMobile"
        android:title="mobile number" />
</PreferenceCategory>
<PreferenceCategory android:title="Application Settings" >
    <SwitchPreference
        android:disableDependentsState="false"
        android:enabled="true"
        android:key="lang"
        android:summaryOff="English"
        android:summaryOn="Greek"
        android:switchTextOff="EN"
        android:switchTextOn="GR" />
</PreferenceCategory>

How i can set/update/overwrite these values from another activity?

I retreive information from a webservice and then i want to save these values and then to be seen from SettingsActivity:

1.patientMobile (string)
2.docEmail      (string)
3.docMobile     (string)

Answer 1

You can read/set/update these values using SharedPreferences and the key to the preference.

SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
String patientMobile = preferences.getString("patientMobile");

//or set the values. 
SharedPreferences.Editor editor = preferences.edit();
editor.putString("patientMobile", "yes"); //This is just an example, you could also put boolean, long, int or floats
editor.commit();