How can i map to xml prefs

[saikiran91]

I have an XML preference

 <ListPreference
            android:id="@+id/pref_music_repeat"
            android:defaultValue="0"
            android:entries="@array/Replay_arrays"
            android:entryValues="@array/array_repeat_value"
            android:icon="@drawable/ic_pref_time"
            android:key="key_music_repeat"
            android:summary="%s"
            android:title="Repeat Count" />

How can i use this in Kotpref

[dsdebastiani]

Hi, is it pretty simple!

Firs you should define some constants keys in strings.xml

    <!--PREFERENCES CONFIG - START -->
    <string name="preference_file_name"  translatable="false">app_preferences_file_name</string>
    <string name="preference_property_key" translatable="false">property_key</string>
    <string name="preference_property_default_value">Default value here</string>
    <!--PREFERENCES CONFIG - END -->

In your preference.xml you should set the key like this:

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:key="@string/preference_file_name"
    >
    <EditTextPreference
        android:dialogTitle="@string/title_location_preference"
        android:key="@string/preference_property_key"
        android:defaultValue="@string/preference_property_default_value"
        android:title="@string/preference_property_title"
        />
</PreferenceScreen>

Now, you your MyAppPreferencesFragment you should set the file name:

class MyAppPreferencesFragment : PreferenceFragment() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        preferenceManager.sharedPreferencesName = getString(R.string.preference_file_name)
        addPreferencesFromResource(R.xml.preferences)
    }

}

In your KotprefModel you should set the same filename, keys and values:

object MyAppPreferences : KotprefModel() {

    override val kotprefName: String = context.getString(R.string.preference_file_name)

    var property by stringPref(context.getString(R.string.preference_property_default_value), R.string.preference_property_key)
}

Now you can use Kotpref to read and store the pref value in your application.

In this example I'm using a simple string preference property. But you can d adapt it to your needs, for instance, list preference. In this case, remember to set the values that you defined in strings.xml.

 <ListPreference
            android:id="@+id/pref_music_repeat"
            android:defaultValue="@string/preference_property_default_value"
            android:entries="@array/Replay_arrays"
            android:entryValues="@array/array_repeat_value"
            android:icon="@drawable/ic_pref_time"
            android:key="@string/preference_property_key"
            android:summary="%s"
            android:title="@string/preference_property_title" />

[chibatching]

Thanks @dsdebastiani !! 😄

@saikiran91
@dsdebastiani way will be work fine. But if you use default shared preferences in production already, you can/should set default shared preferences filename in your KotprefModel.

object MyAppPreferences : KotprefModel() {
    // set default shared preference file name
    override val kotprefName: String = "${context.packageName}_preferences"
}