Use AppCompatListPreference from QuickLyric to fix dialog themes.

Fixes Issue #750.

This new class makes sure to use the correct `AlertDialog.Builder` from
the support lib. This in turn ensures the correct styles get applied to
the result alert dialog.

app/src/main/java/com/geecko/QuickLyric/view/AppCompatListPreference.java

@@ -0,0 +1,97 @@
+/*
+ * *
+ *  * This file is part of QuickLyric
+ *  * Created by geecko
+ *  *
+ *  * QuickLyric is free software: you can redistribute it and/or modify
+ *  * it under the terms of the GNU General Public License as published by
+ *  * the Free Software Foundation, either version 3 of the License, or
+ *  * (at your option) any later version.
+ *  *
+ *  * QuickLyric is distributed in the hope that it will be useful,
+ *  * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  * GNU General Public License for more details.
+ *  * You should have received a copy of the GNU General Public License
+ *  * along with QuickLyric.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package com.geecko.QuickLyric.view;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.preference.ListPreference;
+import android.preference.PreferenceManager;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.app.AppCompatDialog;
+import android.util.AttributeSet;
+
+import java.lang.reflect.Method;
+
+public class AppCompatListPreference extends ListPreference {
+
+    private AppCompatDialog mDialog;
+
+    public AppCompatListPreference(Context context) {
+        super(context);
+    }
+
+    public AppCompatListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public AppCompatDialog getDialog() {
+        return mDialog;
+    }
+
+    @Override
+    protected void showDialog(Bundle state) {
+        if (getEntries() == null || getEntryValues() == null) {
+            throw new IllegalStateException(
+                    "ListPreference requires an entries array and an entryValues array.");
+        }
+
+        int preselect = findIndexOfValue(getValue());
+        AlertDialog.Builder builder = new AlertDialog.Builder(getContext())
+                .setTitle(getDialogTitle())
+                .setIcon(getDialogIcon())
+                .setSingleChoiceItems(getEntries(), preselect, new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        if (which >= 0 && getEntryValues() != null) {
+                            String value = getEntryValues()[which].toString();
+                            if (callChangeListener(value) && isPersistent())
+                                setValue(value);
+                        }
+                        dialog.dismiss();
+                    }
+                });
+
+        PreferenceManager pm = getPreferenceManager();
+        try {
+            Method method = pm.getClass().getDeclaredMethod(
+                    "registerOnActivityDestroyListener",
+                    PreferenceManager.OnActivityDestroyListener.class);
+            method.setAccessible(true);
+            method.invoke(pm, this);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        mDialog = builder.create();
+        if (state != null)
+            mDialog.onRestoreInstanceState(state);
+        mDialog.show();
+    }
+
+    @Override
+    public void onActivityDestroy() {
+        super.onActivityDestroy();
+        if (mDialog != null && mDialog.isShowing() &&
+                mDialog.getWindow() != null && mDialog.getWindow().getWindowManager() != null)
+            mDialog.dismiss();
+    }
+}

app/src/main/res/xml/preferences.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
     <PreferenceCategory android:title="@string/updates">
-        <ListPreference android:title="@string/update_interval"
+        <com.geecko.QuickLyric.view.AppCompatListPreference android:title="@string/update_interval"
             android:key="updateInterval"
             android:defaultValue="24"
             android:entries="@array/updateIntervalNames"
@@ -24,12 +24,12 @@
             android:title="@string/update_history" />
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/display">
-        <ListPreference android:title="@string/pref_language"
+        <com.geecko.QuickLyric.view.AppCompatListPreference android:title="@string/pref_language"
             android:key="language"
             android:defaultValue=""
             android:entries="@array/languageNames"
             android:entryValues="@array/languageValues" />
-        <ListPreference android:title="@string/theme"
+        <com.geecko.QuickLyric.view.AppCompatListPreference android:title="@string/theme"
             android:key="theme"
             android:defaultValue="light"
             android:entries="@array/themeNames"
@@ -77,7 +77,7 @@
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/other"
         android:key="pref_category_other">
-        <ListPreference android:title="@string/cache_downloaded"
+        <com.geecko.QuickLyric.view.AppCompatListPreference android:title="@string/cache_downloaded"
             android:key="keepCacheFor"
             android:defaultValue="86400000"
             android:entries="@array/keepCacheNames"