android-preferences

I am using SharedPreferences to keep the information about user's weight, which I need in my application. The problem is, how to set a default value (eg. 75 kg) automatically after installation? I know how to do it via .xml, but how to do this programmatically? My code: public class SettingsDialogFragment extends DialogFragment{ public static final String PREFS_NAME = "settings"; public Dialog onCreateDialog(Bundle savedInstanceState) { builder.setPositiveButton(R.string.save, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { Data.weight = weight;

i am searching for hours to find out why saving boolean list in shared preferences is not working. The methods are not saving or loading something... the loadmethod always returns the alternative values: so list_size as 0 and the booleans as false. First of all i create the list in my MainActivity and call the save Method: SaveLoadTraining sLoad = new SaveLoadTraining(); ArrayList<Boolean> listBoolTrain = new ArrayList<Boolean>(); listBoolTrain.add(true); listBoolTrain.add(true); sLoad.saveArray(listBoolTrain); The subclass SaveLoadTraining looks like this: package de.sebspr.app08.halle;

I have a simple (not user-editable) numerical setting defined in a preferences XML as follows: <EditTextPreference android:key="@string/numeric_val" android:defaultValue="0" /> And I read it using this simple statement: sharedPrefs.getInt(getString(R.string.numeric_val), 3) It works, but when I try to read it, for the first time after application install , it generates a ClassCastException . The documentation says that getInt() "Throws ClassCastException if there is a preference with this name that is not an int." - and I know that this preference is clearly defined as an <EditTextPreference>

How can I build something like this? I wanna open a dialog in the Preferences Activity, where the user can change the number with a spinner, when he clicks on the according preference item. I got the screenshot from Android Developer Tools , but I cannot find some example code. I have developed a Custom Preference, which can be found here . XML Code: <com.vanniktech.vntnumberpickerpreference.VNTNumberPickerPreference android:defaultValue="@integer/font_size_default_value" android:key="preference_font_size" android:title="@string/font_size" app:vnt_maxValue="@integer/font_size_max_value" app

I'm trying to add an ImageView to a preference fragment in order to show a preview of a color setting. I'm accessing the instance of the imageview via the onCreateView method toset the test color, and it will display. However it only works if I don't call addPreferencesFromResource in the onCreate method - which is a problem since the preferences must be added. Also if I leave the call to addPreferencesFromResource, but remove the entire onCreateView method the program will run (albiet without the updatable imageview). The error in both cases is "Content has view with id attribute 'android.R

I would like to change the title and line color of my ListPreference from blue to pink, to match the line of my action bar. Any ideas? Thanks in advance! I've been looking through Android's themes.xml and styles.xml looking at things like dialogPreferenceStyle , but haven't figured it out yet. Had the same problem today. Old thread, but I found this: and it works perfectly. Simply modify your styles.xml <resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.AppCompat.NoActionBar"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item