Issue with themes

[ritvikbhawnani]

I have a light theme and dark theme version of my app. Unfortunately, the preference screen does not change with the current theme. I set my theme in my manifest file. Should I create a separate theme for preferences or should it work with the overall theme? Also, I don't think PreferenceFixTheme works anymore.

This is the AndroidManifest

<application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/BaseTheme">

This is my XML

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <PreferenceCategory
        android:key="themes_category"
        android:title="Theme" />

    <ColorPickerPreference
        android:defaultValue="@color/colorPrimary"
        android:dialogTitle="Select a Theme"
        android:key="color_picker"
        android:persistent="false"
        android:summary="Light"
        android:title="Color Picker"
        app:pref_size="small" />

</PreferenceScreen>

This is the activity

public class CalculatorSettings extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_settings);
    }

    public static class CalculatorPreferenceFragment extends PreferenceFragmentCompat {

        @Override
        public void onCreatePreferencesFix(Bundle savedInstanceState, String rootKey) {
            setPreferencesFromResource(R.xml.calculator_preferences, rootKey);

[gregkorossy]

If you use the AndroidX version, you don't need the PreferenceFixTheme anymore, just use whatever you use for the rest of the app (based on AppCompat or MaterialComponents, of course).

[ritvikbhawnani]

I used androidX

implementation "androidx.preference:preference:1.0.2"
implementation 'com.takisoft.preferencex:preferencex:1.1.0-alpha05'
implementation 'com.takisoft.preferencex:preferencex-colorpicker:1.1.0-alpha05'

[ritvikbhawnani]

Note: I deleted the previous comment

I apologize for the large number of comments but I think I have a better understanding of my issue. I am supposed to call getDelegate().setLocalNightMode(AppCompatDelegate.MODE_NIGHT_YES); from both activities which I was not.

I was under the impression calling it once would cause an app-wide switch to a dark theme. Are you aware of a better way of achieving this?

The only difference in theme between both activities is the android:windowBackground attribute. Should I create a new theme just for the Settings activity with the new background or is there a way override just that attribute?

I do not fully understand the difference between setOnPreferenceChangeListener and setOnPreferenceClickListener. I want to update the theme of my app depending on a user click.

Lastly, cannot access setTheme() from the fragment. Can you recommend a way I can set the theme of all actvities.