java-运行时更改Android素材主题

概述我在运行时有一个用于更改应用程序主题的设置屏幕.我知道如何创建材料设计主题.我已经在我的style.xml文件中创建了一个这是我的style.xml的代码：<stylename="AppTheme"parent="AppTheme.Base"/><stylename="AppTheme.Base"parent="Theme.AppCompat.Light.DarkActionB

我在运行时有一个用于更改应用程序主题的设置屏幕.我知道如何创建材料设计主题.我已经在我的style.xml文件中创建了一个

这是我的style.xml的代码：

 <style name="Apptheme" parent="Apptheme.Base"/>    <style name="Apptheme.Base" parent="theme.AppCompat.light.DarkActionbar">        <item name="colorPrimary">@color/primaryBackground</item>        <item name="colorPrimaryDark">@color/primaryBackground</item>        <item name="colorAccent">@color/colorAccent</item>        <item name="androID:colorControlnormal">@color/primaryBackground</item>        <item name="androID:colorControlActivated">@color/primaryBackground</item>        <item name="androID:colorControlHighlight">@color/primaryBackground</item>        <item name="androID:textcolorPrimary">@color/primaryBackground</item>        <item name="androID:textcolorSecondary">@color/primaryBackground</item>        <item name="androID:windowAnimationStyle">@style/WindowAnimationTransition</item>        <item name="androID:textCursorDrawable">@drawable/cursor_indicator</item>        <item name="windowActionbar">false</item>        <item name="windowNoTitle">true</item>    </style>

现在,我想将运行时应用程序主题从绿色更改为紫色或黄色.任何人都可以告诉我如何从主题选择中创建颜色选择器,以及如何在style.xml中创建多个主题以将其更改为运行时.

@H_301_12@解决方法:

你看过这个演示吗？

MultipleThemeMaterialDesign

看到这个class：

public class Preferences {    private static final BoolToStringPref[] PREF_MIGRATION = new BoolToStringPref[]{            new BoolToStringPref(R.string.pref_dark_theme, false,                    R.string.pref_theme, R.string.pref_theme_value_red),    };    public static voID sync(PreferenceManager preferenceManager) {        Map<String, ?> map = preferenceManager.getSharedPreferences().getAll();        for (String key : map.keySet()) {            sync(preferenceManager, key);        }    }    public static voID sync(PreferenceManager preferenceManager, String key) {        Preference pref = preferenceManager.findPreference(key);        if (pref instanceof ListPreference) {            ListPreference ListPref = (ListPreference) pref;            pref.setSummary(ListPref.getEntry());        }    }    /**     * Migrate from boolean preferences to string preferences. Should be called only once     * when application is @R_824_4404@ed.     * If boolean preference has been set before, and value is not default, migrate to the new     * corresponding string value     * If boolean preference has been set before, but value is default, simply remove it     * @param context   application context     * Todo remove once all users migrated     */    public static voID migrate(Context context) {        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(context);        SharedPreferences.Editor editor = sp.edit();        for (BoolToStringPref pref : PREF_MIGRATION) {            if (pref.isChanged(context, sp)) {                editor.putString(context.getString(pref.newKey), context.getString(pref.newValue));            }            if (pref.hasoldValue(context, sp)) {                editor.remove(context.getString(pref.oldKey));            }        }        editor.apply();    }    public static voID applytheme(ContextthemeWrapper contextthemeWrapper) {        if (Preferences.darkthemeEnabled(contextthemeWrapper)) {            contextthemeWrapper.settheme(R.style.Apptheme_Blue);        }    }    private static boolean darkthemeEnabled(Context context) {        return PreferenceManager.getDefaultSharedPreferences(context)                .getString(context.getString(R.string.pref_theme),                        context.getString(R.string.pref_theme_value_red))                .equals(context.getString(R.string.pref_theme_value_blue));    }    private static class BoolToStringPref {        private final int oldKey;        private final boolean oldDefault;        private final int newKey;        private final int newValue;        private BoolToStringPref(@StringRes int oldKey, boolean oldDefault,                                 @StringRes int newKey, @StringRes int newValue) {            this.oldKey = oldKey;            this.oldDefault = oldDefault;            this.newKey = newKey;            this.newValue = newValue;        }        private boolean isChanged(Context context, SharedPreferences sp) {            return hasoldValue(context, sp) &&                    sp.getBoolean(context.getString(oldKey), oldDefault) != oldDefault;        }        private boolean hasoldValue(Context context, SharedPreferences sp) {            return sp.contains(context.getString(oldKey));        }    }}

查看该演示,它将帮助您了解更多.

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