我为用户的暗模式首选项设置了具有不同值的ListPreference。现在,我只希望该应用程序能够与Android Q中引入的新的黑暗模式实现一起使用。如果设置了系统黑暗模式,则该应用程序会发生变化,因为我已在isforcedarkallowed中启用了styles.xml

设置片段:

public static class SettingsFragment extends PreferenceFragmentCompat {
    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        setPreferencesFromResource(R.xml.root_preferences, rootKey);
        PreferenceScreen screen = getPreferenceScreen();
        final ListPreference listPreference = (ListPreference) findPreference("theme");
        Preference preference = (Preference) findPreference("notq");
        int api = Integer.valueOf(android.os.Build.VERSION.SDK_INT);
        if (api > 28) {
            screen.removePreference(preference);
        }
        if (api < 29) {
            screen.removePreference(listPreference);
        }
        listPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                listPreference.setValue(newValue.toString());
                theme = String.valueOf(listPreference.getEntry());
                Log.d("debug", theme);
                if (theme.equals("Light")) {
                    AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_NO);
                }
                if (theme.equals("Dark")) {
                    AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_YES);
                }
                if (theme.equals("System default")) {
                    AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_FOLLOW_SYSTEM);
                }
                return true;
            }
        });
    }
}


Arrays.xml(暗模式首选项的值)

<resources xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">
<!-- Reply Preference -->
<string-array name="theme_entries">
    <item>Light</item>
    <item>Dark</item>
    <item>System default</item>

</string-array>

<string-array name="theme_values">
    <item>light</item>
    <item>dark</item>
    <item>default1</item>
</string-array>
</resources>


我的列表首选项:

 <ListPreference
    android:id="@+id/list"
    app:entries="@array/theme_entries"
    app:entryValues="@array/theme_values"
    app:key="theme"
    app:title="@string/theme_title"
    app:useSimpleSummaryProvider="true" />


我正在使用的应用程序主题(styles.xml):

 <style name="AppTheme2" parent="Theme.AppCompat.DayNight.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="android:forceDarkAllowed" tools:targetApi="q">true</item>
    <item name="android:isLightTheme" tools:targetApi="q">true</item>
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="windowNoTitle">true</item>
    <item name="windowActionBar">false</item>
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowBackground">#FFFFFF</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:backgroundDimEnabled">false</item>
</style>


有什么建议?

最佳答案

styles.xml中,启用Theme.AppCompat.DayNight.DarkActionBar时不应将forceDarkAllowed作为父项。将其更改为Theme.AppCompatTheme.MaterialComponentsforceDarkAllowed设置为true时,您不能从昼夜主题继承。您可以在https://developer.android.com/guide/topics/ui/look-and-feel/darktheme强制文本部分中阅读有关内容。

10-08 13:26