Fix various linter warnings

Among others:
- Use `apply` instead of `commit` when saving shared preferences.
- Avoid inlined Api
- Remove unused resources

29 files changed, 40 insertions, 69 deletions

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 7cdbcda..a76585c 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:hardwareAccelerated="false">
+  <uses-permission android:name="android.permission.VIBRATE"/>
+  <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
+
   <application android:label="@string/app_name" android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:hardwareAccelerated="false">
     <service android:name="juloo.keyboard2.Keyboard2" android:label="@string/app_name" android:permission="android.permission.BIND_INPUT_METHOD" android:exported="true" android:directBootAware="true">
       <intent-filter>
@@ -12,15 +15,13 @@
         <action android:name="android.intent.action.MAIN"/>
       </intent-filter>
     </activity>
-    <activity android:name="juloo.keyboard2.LauncherActivity" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:theme="@style/appTheme" android:exported="true" android:directBootAware="true">
+    <activity android:name="juloo.keyboard2.LauncherActivity" android:icon="@mipmap/ic_launcher" android:theme="@style/appTheme" android:exported="true" android:directBootAware="true">
       <intent-filter>
         <action android:name="android.intent.action.MAIN"/>
         <category android:name="android.intent.category.LAUNCHER"/>
       </intent-filter>
     </activity>
   </application>
-  <uses-permission android:name="android.permission.VIBRATE"/>
-  <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
 
   <!-- To query enabled input methods for voice IME detection -->
   <queries>
diff --git a/build.gradle b/build.gradle
index 8ff3f0d..139b27b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -77,6 +77,11 @@ android {
     sourceCompatibility JavaVersion.VERSION_1_7
     targetCompatibility JavaVersion.VERSION_1_7
   }
+
+  lintOptions {
+    // Translation are already checked by 'syncTranslations'
+    disable 'MissingTranslation'
+  }
 }
 
 dependencies {
diff --git a/res/layout/dialog_edit_text.xml b/res/layout/dialog_edit_text.xml
index ad07947..5b935dc 100644
--- a/res/layout/dialog_edit_text.xml
+++ b/res/layout/dialog_edit_text.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content">
-  <EditText android:id="@+id/text" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="10dp"/>
+  <EditText android:id="@+id/text" android:inputType="text" android:importantForAutofill="no" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="10dp"/>
 </LinearLayout>
diff --git a/res/layout/launcher_activity.xml b/res/layout/launcher_activity.xml
index c007299..4e0cc0c 100644
--- a/res/layout/launcher_activity.xml
+++ b/res/layout/launcher_activity.xml
@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true">
-  <LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical">
+  <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical">
     <TextView style="@style/paragraph" android:text="@string/launcher_description"/>
     <Button style="@style/paragraph" android:text="@string/launcher_button_imesettings" android:onClick="launch_imesettings" android:layout_width="wrap_content"/>
     <Button style="@style/paragraph" android:text="@string/launcher_button_imepicker" android:onClick="launch_imepicker" android:layout_width="wrap_content"/>
     <VideoView android:id="@+id/launcher_intro_video" android:layout_width="240dp" android:layout_height="wrap_content" android:layout_gravity="center"/>
     <TextView android:id="@+id/launcher_tryhere_text" style="@style/paragraph" android:text="@string/launcher_tryhere"/>
-    <EditText android:id="@+id/launcher_tryhere_area" style="@style/paragraph" android:inputType="text"/>
+    <EditText android:id="@+id/launcher_tryhere_area" style="@style/paragraph" android:inputType="text" android:hint="@string/launcher_tryhere_hint" android:importantForAutofill="no"/>
     <TextView style="@style/paragraph" android:text="@string/launcher_sourcecode"/>
     <TextView style="@style/paragraph" android:text="https://github.com/Julow/Unexpected-Keyboard" android:autoLink="web" android:linksClickable="true"/>
   </LinearLayout>
diff --git a/res/values-cs/strings.xml b/res/values-cs/strings.xml
index 0c6f79e..771053b 100644
--- a/res/values-cs/strings.xml
+++ b/res/values-cs/strings.xml
@@ -47,8 +47,6 @@ Nezapomeňte... Jako každá virtuální klávesnice, i tato musí být aktivov�
   <string name="pref_extra_keys_title">Přidat klávesy do klávesnice</string>
   <string name="pref_extra_keys_custom">Přidat vlastní klávesy</string>
   <string name="pref_extra_keys_internal">Výbrané klávesy k přidaní do klávesnice</string>
-  <string name="pref_second_layout_title">Vedlejší rozvržení</string>
-  <string name="pref_second_layout_none">Žádné</string>
   <string name="pref_category_typing">Psaní</string>
   <string name="pref_swipe_dist_title">Vzdálenost posunutí prstem</string>
   <string name="pref_swipe_dist_summary">Jak daleko je třeba posunout prst pro zadání znaku/znaménka v rohu klávey (%s)</string>
@@ -102,6 +100,7 @@ Nezapomeňte... Jako každá virtuální klávesnice, i tato musí být aktivov�
   <string name="launcher_description">Tato aplikace je pouhou virtuální klávesnicí. Přejděte do systémového nastavení, kliknutím na tlačítko níže a aktivujte ji.</string>
   <string name="launcher_sourcecode">Toto je volná, open-source aplikace. Její zdrojový kód, či hlášení chyb, naleznete na Githubu.</string>
   <string name="launcher_tryhere">Po aktivaci můžete klávesnici rovnou vyzkoušet zde:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Caps lock</string>
   <string name="key_descr_switch_greekmath">Řecké a matematické symboly</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -122,5 +121,4 @@ Nezapomeňte... Jako každá virtuální klávesnice, i tato musí být aktivov�
   <string name="key_descr_page_down">Page Down</string>
   <string name="key_descr_home">Home</string>
   <string name="key_descr_end">End</string>
-  <string name="pref_category_advanced">Pokročilé</string>
 </resources>
diff --git a/res/values-de/strings.xml b/res/values-de/strings.xml
index c5df728..84f3e26 100644
--- a/res/values-de/strings.xml
+++ b/res/values-de/strings.xml
@@ -35,8 +35,6 @@ Diese App enthält keine Werbung, benötigt keinen Netzwerkzugriff und ist quell
   <string name="pref_extra_keys_title">Zusätzliche Zeichen zur Tastatur hinzufügen</string>
   <string name="pref_extra_keys_custom">Benutzerdefinierte Tasten hinzufügen</string>
   <string name="pref_extra_keys_internal">Tasten auswählen, die der Tastatur hinzugefügt werden sollen</string>
-  <string name="pref_second_layout_title">Zweites Layout</string>
-  <string name="pref_second_layout_none">Keines</string>
   <string name="pref_category_typing">Tippen</string>
   <string name="pref_swipe_dist_title">Länge der Wischgeste</string>
   <string name="pref_swipe_dist_summary">Abstand der Zeichen in den Ecken der Tasten (%s)</string>
@@ -90,6 +88,7 @@ Diese App enthält keine Werbung, benötigt keinen Netzwerkzugriff und ist quell
   <string name="launcher_description">Diese App ist eine virtuelle Tastatur. Tippe auf den Button unten und aktivere Unexpected Keyboard in den Systemeinstellungen.</string>
   <string name="launcher_sourcecode">Dies ist eine freie und quelloffene App. Du findest den Quellcode auf Github. Dort können auch Bugs gemeldet werden.</string>
   <string name="launcher_tryhere">Nach Aktivierung kannst du die Tastatur hier ausprobieren:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Feststelltaste</string>
   <string name="key_descr_switch_greekmath">Griechische &amp; mathematische Symbole</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ Diese App enthält keine Werbung, benötigt keinen Netzwerkzugriff und ist quell
   <string name="key_descr_page_down">Bild ab</string>
   <string name="key_descr_home">Pos1</string>
   <string name="key_descr_end">Ende</string>
-  <string name="pref_category_advanced">Erweitert</string>
 </resources>
diff --git a/res/values-es/strings.xml b/res/values-es/strings.xml
index c52168c..e58048d 100644
--- a/res/values-es/strings.xml
+++ b/res/values-es/strings.xml
@@ -35,8 +35,6 @@ La misma no contiene ningún anuncio/publicidad, no realiza peticiones de red y
   <string name="pref_extra_keys_title">Agregar teclas</string>
   <string name="pref_extra_keys_custom">Agregar teclas personalizadas</string>
   <string name="pref_extra_keys_internal">Selecciona teclas para agregar al teclado</string>
-  <string name="pref_second_layout_title">Formato secundario</string>
-  <string name="pref_second_layout_none">Ninguno</string>
   <string name="pref_category_typing">Escritura</string>
   <string name="pref_swipe_dist_title">Distancia de deslizamiento</string>
   <string name="pref_swipe_dist_summary">Distancia de caracteres en las esquinas de las teclas (%s)</string>
@@ -90,6 +88,7 @@ La misma no contiene ningún anuncio/publicidad, no realiza peticiones de red y
   <string name="launcher_description">Esta aplicación es un teclado virtual. Presiona el botón de abajo para ir a Ajustes y habilitar Unexpected Keyboard.</string>
   <string name="launcher_sourcecode">Esta es una aplicación gratuita, libre y de código abierto. Puedes encontrar el código fuente o reportar errores en GitHub.</string>
   <string name="launcher_tryhere">Tras habilitarlo, puedes probar el teclado en este campo:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Bloq Mayús</string>
   <string name="key_descr_switch_greekmath">Símb. griegos y matemáticos</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ La misma no contiene ningún anuncio/publicidad, no realiza peticiones de red y
   <string name="key_descr_page_down">Re Pág</string>
   <string name="key_descr_home">Inicio</string>
   <string name="key_descr_end">Fin</string>
-  <string name="pref_category_advanced">Avanzado</string>
 </resources>
diff --git a/res/values-fa/strings.xml b/res/values-fa/strings.xml
index d3fdeb2..1cbc7c7 100644
--- a/res/values-fa/strings.xml
+++ b/res/values-fa/strings.xml
@@ -35,8 +35,6 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="pref_extra_keys_title">افزودن کلیدها به صفحه کلید</string>
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <string name="pref_second_layout_title">طرح دوم</string>
-  <string name="pref_second_layout_none">هیچ</string>
   <string name="pref_category_typing">درحال نوشتن</string>
   <string name="pref_swipe_dist_title">فاصله کشیدن</string>
   <string name="pref_swipe_dist_summary">فاصله حروف از گوشه‌های کلیدها )(%s)</string>
@@ -90,6 +88,7 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="launcher_description">این برنامه یک صفحه کلید مجازی است. با کلیک روی گزینه زیر به تنظیمات سامانه بروید و صفحه کلید غیرمنتظره را فعال کنید.</string>
   <string name="launcher_sourcecode">این یک برنامه متن باز و آزاد است. شما می‌توانید کد منبع را در گیتهاب پیدا کرده و نیز باگ‌ها را گزارش کنید.</string>
   <string name="launcher_tryhere">بعد از فعالسازی، صفحه کلید را اینجا امتحان کنید:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ This application contains no ads, doesn't make any network requests and is Open
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">پیشرفته</string>
 </resources>
diff --git a/res/values-fr/strings.xml b/res/values-fr/strings.xml
index 82b9e1f..971fef9 100644
--- a/res/values-fr/strings.xml
+++ b/res/values-fr/strings.xml
@@ -35,8 +35,6 @@ Cette application ne contient pas de publicité, n'accède pas au réseau et est
   <string name="pref_extra_keys_title">Ajouter des touches au clavier</string>
   <string name="pref_extra_keys_custom">Ajouter des touches personnalisées</string>
   <string name="pref_extra_keys_internal">Sélectionner les touches à ajouter au clavier</string>
-  <string name="pref_second_layout_title">Disposition secondaire</string>
-  <string name="pref_second_layout_none">Aucune</string>
   <string name="pref_category_typing">Saisie</string>
   <string name="pref_swipe_dist_title">Distance de swipe</string>
   <string name="pref_swipe_dist_summary">La distance des caractères dans les coins (%s)</string>
@@ -90,6 +88,7 @@ Cette application ne contient pas de publicité, n'accède pas au réseau et est
   <string name="launcher_description">Cette application est un clavier virtuel. Activez-le dans les paramètres système en cliquant sur le bouton ci-dessous.</string>
   <string name="launcher_sourcecode">Cette application est libre et open-source. Lisez le source code et reportez des problèmes sur Github.</string>
   <string name="launcher_tryhere">Après l\'avoir activé, vous pouvez l\'essayer ici:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Verrouillage majuscules</string>
   <string name="key_descr_switch_greekmath">Symboles mathématiques</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ Cette application ne contient pas de publicité, n'accède pas au réseau et est
   <string name="key_descr_page_down">Page suivante</string>
   <string name="key_descr_home">Début</string>
   <string name="key_descr_end">Fin</string>
-  <string name="pref_category_advanced">Avancé</string>
 </resources>
diff --git a/res/values-it/strings.xml b/res/values-it/strings.xml
index b40b664..b6a278d 100644
--- a/res/values-it/strings.xml
+++ b/res/values-it/strings.xml
@@ -35,8 +35,6 @@ This application contains no ads, doesn't make any network requests and is Open
   <!-- <string name="pref_extra_keys_title">Add keys to the keyboard</string> -->
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <!-- <string name="pref_second_layout_title">Secondary layout</string> -->
-  <string name="pref_second_layout_none">Nessuno</string>
   <string name="pref_category_typing">Digitando</string>
   <string name="pref_swipe_dist_title">Distanza swipe</string>
   <string name="pref_swipe_dist_summary">Distanza dei caratteri negli angoli dei tasti (%s)</string>
@@ -90,6 +88,7 @@ This application contains no ads, doesn't make any network requests and is Open
   <!-- <string name="launcher_description">This application is a virtual keyboard. Go to the system settings by clicking on the button below and enable Unexpected-Keyboard.</string> -->
   <!-- <string name="launcher_sourcecode">This is an free and open source application. You can find the source code or report bugs on Github.</string> -->
   <!-- <string name="launcher_tryhere">After enabling, you can try the keyboard here:</string> -->
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ This application contains no ads, doesn't make any network requests and is Open
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <!-- <string name="pref_category_advanced">Advanced</string> -->
 </resources>
diff --git a/res/values-ko/strings.xml b/res/values-ko/strings.xml
index 90d7ce1..06ee380 100644
--- a/res/values-ko/strings.xml
+++ b/res/values-ko/strings.xml
@@ -47,8 +47,6 @@
   <!-- <string name="pref_extra_keys_title">Add keys to the keyboard</string> -->
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <!-- <string name="pref_second_layout_title">Secondary layout</string> -->
-  <!-- <string name="pref_second_layout_none">None</string> -->
   <string name="pref_category_typing">타자</string>
   <string name="pref_swipe_dist_title">스와이프 범위</string>
   <string name="pref_swipe_dist_summary">키 모서리 문자의 입력 범위 (%s)</string>
@@ -102,6 +100,7 @@
   <!-- <string name="launcher_description">This application is a virtual keyboard. Go to the system settings by clicking on the button below and enable Unexpected-Keyboard.</string> -->
   <!-- <string name="launcher_sourcecode">This is an free and open source application. You can find the source code or report bugs on Github.</string> -->
   <!-- <string name="launcher_tryhere">After enabling, you can try the keyboard here:</string> -->
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -122,5 +121,4 @@
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <!-- <string name="pref_category_advanced">Advanced</string> -->
 </resources>
diff --git a/res/values-land/dimens.xml b/res/values-land/dimens.xml
deleted file mode 100644
index 91e6c40..0000000
--- a/res/values-land/dimens.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-  <dimen name="emoji_type_button_height">48dp</dimen>
-</resources>
diff --git a/res/values-lv/strings.xml b/res/values-lv/strings.xml
index b874a87..fc32013 100644
--- a/res/values-lv/strings.xml
+++ b/res/values-lv/strings.xml
@@ -35,8 +35,6 @@ Tagad lieliski piemērota izmantošanai ikdienā.
   <string name="pref_extra_keys_title">Pievienot tastatūrai taustiņus</string>
   <string name="pref_extra_keys_custom">Pievienot pielāgotus taustiņus</string>
   <string name="pref_extra_keys_internal">Atlasīt taustiņus, ko pievienot tastatūrai</string>
-  <string name="pref_second_layout_title">Otrējais izkārtojums</string>
-  <string name="pref_second_layout_none">Neviens</string>
   <string name="pref_category_typing">Rakstīšana</string>
   <string name="pref_swipe_dist_title">Pavilkšanas attālums</string>
   <string name="pref_swipe_dist_summary">Taustiņu stūros esošo rakstzīmju attālums (%s)</string>
@@ -92,6 +90,7 @@ Tagad lieliski piemērota izmantošanai ikdienā.
   <string name="launcher_sourcecode">Šī ir bezmaksas un atvērtā pirmkoda lietotne.
     GitHub var atrast pirmkodu un ziņot par nepilnībām.</string>
   <string name="launcher_tryhere">Pēc iespējošanas šeit var izmēģināt tastatūru:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Burtslēgs</string>
   <string name="key_descr_switch_greekmath">Grieķu un matemātikas rakstzīmes</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -112,5 +111,4 @@ Tagad lieliski piemērota izmantošanai ikdienā.
   <string name="key_descr_page_down">Lejupšķirt</string>
   <string name="key_descr_home">Sākums</string>
   <string name="key_descr_end">Beigas</string>
-  <string name="pref_category_advanced">Papildu</string>
 </resources>
diff --git a/res/values-pl/strings.xml b/res/values-pl/strings.xml
index 9c9ceaa..aa983b4 100644
--- a/res/values-pl/strings.xml
+++ b/res/values-pl/strings.xml
@@ -35,8 +35,6 @@ Aplikacja nie zawiera reklam, nie żąda dostępu do internetu, a jej kod źród
   <string name="pref_extra_keys_title">Dodaj klawisze do klawiatury</string>
   <string name="pref_extra_keys_custom">Dodaj niestandardowe klawisze</string>
   <string name="pref_extra_keys_internal">Wybierz klawisze, które chcesz dodać do klawiatury</string>
-  <string name="pref_second_layout_title">Drugi układ</string>
-  <string name="pref_second_layout_none">Żaden</string>
   <string name="pref_category_typing">Pisanie</string>
   <string name="pref_swipe_dist_title">Odległość przesuwania</string>
   <string name="pref_swipe_dist_summary">Odległość znaków od rogów klawiszy (%s)</string>
@@ -90,6 +88,7 @@ Aplikacja nie zawiera reklam, nie żąda dostępu do internetu, a jej kod źród
   <string name="launcher_description">Ta aplikacja jest klawiaturą ekranową. Naciśnij poniższy przycisk, aby przejść do ustawień systemu i włącz Unexpected-Keyboard.</string>
   <string name="launcher_sourcecode">Jest to darmowa aplikacja o otwartym kodzie źródłowym. Możesz zobaczyć kod źródłowy oraz zgłosić błedy na Githubie.</string>
   <string name="launcher_tryhere">Po jej włączeniu, możesz wypróbować klawiaturę tutaj:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Caps lock</string>
   <string name="key_descr_switch_greekmath">Symbole greckie i matematyczne</string>
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ Aplikacja nie zawiera reklam, nie żąda dostępu do internetu, a jej kod źród
   <string name="key_descr_page_down">Page Down</string>
   <string name="key_descr_home">Home</string>
   <string name="key_descr_end">End</string>
-  <string name="pref_category_advanced">Zaawansowane</string>
 </resources>
diff --git a/res/values-pt/strings.xml b/res/values-pt/strings.xml
index 292e073..7a603f6 100644
--- a/res/values-pt/strings.xml
+++ b/res/values-pt/strings.xml
@@ -47,8 +47,6 @@ Sistema &gt; Idioma e entrada &gt; Teclado virtual &gt; Gerenciar teclados virtu
   <string name="pref_extra_keys_title">Adicionar teclas ao teclado</string>
   <string name="pref_extra_keys_custom">Adicionar teclas customizadas</string>
   <string name="pref_extra_keys_internal">Selecione teclas para serem adicionadas ao teclado</string>
-  <string name="pref_second_layout_title">Layout secundário</string>
-  <string name="pref_second_layout_none">Nenhum</string>
   <string name="pref_category_typing">Digitação</string>
   <string name="pref_swipe_dist_title">Distância a deslizar</string>
   <string name="pref_swipe_dist_summary">Distância até acionar os cantos das teclas (%s)</string>
@@ -102,6 +100,7 @@ Sistema &gt; Idioma e entrada &gt; Teclado virtual &gt; Gerenciar teclados virtu
   <string name="launcher_description">Este app é um teclado virtual. Vá para as configurações do sistema clicando no botão abaixo e ative o Teclado Unexpected.</string>
   <string name="launcher_sourcecode">Este app é gratuito é de código aberto. Você pode consultar o código ou fazer sugestões em Github.</string>
   <string name="launcher_tryhere">Após ativar, experimente aqui:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Caps lock</string>
   <string name="key_descr_switch_greekmath">Grego &amp; símbolos matemáticos</string>
   <string name="key_descr_change_method">Trocar de teclado</string>
@@ -122,5 +121,4 @@ Sistema &gt; Idioma e entrada &gt; Teclado virtual &gt; Gerenciar teclados virtu
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">Avançado</string>
 </resources>
diff --git a/res/values-ro/strings.xml b/res/values-ro/strings.xml
index a3a9ec7..f4b814b 100644
--- a/res/values-ro/strings.xml
+++ b/res/values-ro/strings.xml
@@ -35,8 +35,6 @@ Această aplicație nu conține publicitate, nu folosește rețeaua deloc și e
   <string name="pref_extra_keys_title">Adaugă taste pe tastatură</string>
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <string name="pref_second_layout_title">Aranjament secundar</string>
-  <string name="pref_second_layout_none">Nimic</string>
   <string name="pref_category_typing">Tipărire</string>
   <string name="pref_swipe_dist_title">Distanța de glisare</string>
   <string name="pref_swipe_dist_summary">Distanța dintre caracterele din colțurile tastelor (%s)</string>
@@ -90,6 +88,7 @@ Această aplicație nu conține publicitate, nu folosește rețeaua deloc și e
   <string name="launcher_description">Această aplicație este o tastatură virtuală. Accesați setările sistemului făcând clic pe butonul de mai jos și activați tastatura Unexpected.</string>
   <string name="launcher_sourcecode">Aceasta este o aplicație gratuită și open source. Puteți găsi codul sursă sau raporta erori folosind link-ul Github.</string>
   <string name="launcher_tryhere">După activare, puteți să încercați tastatura aici:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ Această aplicație nu conține publicitate, nu folosește rețeaua deloc și e
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">Setări avansate</string>
 </resources>
diff --git a/res/values-ru/strings.xml b/res/values-ru/strings.xml
index f552588..a2defba 100644
--- a/res/values-ru/strings.xml
+++ b/res/values-ru/strings.xml
@@ -35,8 +35,6 @@
   <string name="pref_extra_keys_title">Добавить клавиши на клавиатуру</string>
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <string name="pref_second_layout_title">Дополнительная раскладка</string>
-  <string name="pref_second_layout_none">Нет</string>
   <string name="pref_category_typing">Печать</string>
   <string name="pref_swipe_dist_title">Расстояние пролистывания</string>
   <string name="pref_swipe_dist_summary">Расстояние между символами в углах клавиш (%s)</string>
@@ -90,6 +88,7 @@
   <string name="launcher_description">Данное приложение является виртуальной клавиатурой. Зайдите в настройки, нажав кнопку внизу и активируйте Unexpected-Keyboard.</string>
   <string name="launcher_sourcecode">Это бесплатное приложение с открытым исходным кодом. Вы можете изучить код или сообщить об ошибках по ссылке Github.</string>
   <string name="launcher_tryhere">После активации вы можете попробовать клавиатуру прямо здесь:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">Расширенные настройки</string>
 </resources>
diff --git a/res/values-tr/strings.xml b/res/values-tr/strings.xml
index 3a557cf..0dc19f9 100644
--- a/res/values-tr/strings.xml
+++ b/res/values-tr/strings.xml
@@ -35,8 +35,6 @@ Bu uygulama açık kaynaklıdır. Reklam içermez ve internete bağlanmaz."</str
   <string name="pref_extra_keys_title">Tuş ekle</string>
   <string name="pref_extra_keys_custom">Özel tuş ekle</string>
   <string name="pref_extra_keys_internal">Klavyeye eklenecek tuşları seçin</string>
-  <string name="pref_second_layout_title">İklncil tuş düzeni</string>
-  <string name="pref_second_layout_none">Hiçbiri</string>
   <string name="pref_category_typing">Yazma</string>
   <string name="pref_swipe_dist_title">Kaydırma mesafesi</string>
   <string name="pref_swipe_dist_summary">Tuşların köşelerinden kaydırma mesafesi (%s)</string>
@@ -90,6 +88,7 @@ Bu uygulama açık kaynaklıdır. Reklam içermez ve internete bağlanmaz."</str
   <string name="launcher_description">Bu uygulama bir sanal klavye uygulamasıdır. Aşağıdaki butona basarak sistem ayarlarında etkinleştiriniz.</string>
   <string name="launcher_sourcecode">Bu uygulama ücretsiz ve açık kaynaklıdır. Kaynak koduna erişmek veya bir hata raporlamak için GitHub</string>
   <string name="launcher_tryhere">Ayarlardan aktif ettikten sonra klavyeyi burada test edebilirsin:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">CapsLock</string>
   <string name="key_descr_switch_greekmath">Greek &amp; math sembolleri</string>
   <string name="key_descr_change_method">Klavye değiştir</string>
@@ -110,5 +109,4 @@ Bu uygulama açık kaynaklıdır. Reklam içermez ve internete bağlanmaz."</str
   <string name="key_descr_page_down">Aşağı</string>
   <string name="key_descr_home">BAŞ(Sol yön tuşu)</string>
   <string name="key_descr_end">SON(Sağ yön tuşu)</string>
-  <string name="pref_category_advanced">Gelişmiş</string>
 </resources>
diff --git a/res/values-uk/strings.xml b/res/values-uk/strings.xml
index d2abf34..eb7f4c4 100644
--- a/res/values-uk/strings.xml
+++ b/res/values-uk/strings.xml
@@ -35,8 +35,6 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="pref_extra_keys_title">Додати клавіші до клавіатури</string>
   <string name="pref_extra_keys_custom">Додайте власні клавіші</string>
   <string name="pref_extra_keys_internal">Виберіть клавіші, які потрібно додати до клавіатури</string>
-  <string name="pref_second_layout_title">Додаткова розкладка</string>
-  <string name="pref_second_layout_none">Немає</string>
   <string name="pref_category_typing">Введення</string>
   <string name="pref_swipe_dist_title">Відстань проведення</string>
   <string name="pref_swipe_dist_summary">Відстань між символами в кутах клавіш (%s)</string>
@@ -90,6 +88,7 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="launcher_description">Ця програма є віртуальною клавіатурою. Перейдіть до системних налаштувань, натиснувши кнопку нижче, і ввімкніть Unexpected-Keyboard.</string>
   <string name="launcher_sourcecode">Це безкоштовна програма з відкритим кодом. Ви можете знайти початковий код або повідомити про помилки на GitHub.</string>
   <string name="launcher_tryhere">Після ввімкнення ви можете спробувати клавіатуру тут:</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <string name="key_descr_capslock">Caps lock</string>
   <string name="key_descr_switch_greekmath">Грецькі та математичні символи</string>
   <string name="key_descr_change_method">Переключити клавіатуру</string>
@@ -110,5 +109,4 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="key_descr_page_down">Page Down</string>
   <string name="key_descr_home">Home</string>
   <string name="key_descr_end">End</string>
-  <string name="pref_category_advanced">Додаткові</string>
 </resources>
diff --git a/res/values-vi/strings.xml b/res/values-vi/strings.xml
index b77e43e..fc028b1 100644
--- a/res/values-vi/strings.xml
+++ b/res/values-vi/strings.xml
@@ -35,8 +35,6 @@ Bây giờ đã hoàn hảo cho việc sử dụng hàng ngày.
   <string name="pref_extra_keys_title">Thêm phím vào bàn phím</string>
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <string name="pref_second_layout_title">Bố cục phụ</string>
-  <string name="pref_second_layout_none">Không</string>
   <string name="pref_category_typing">Gõ</string>
   <string name="pref_swipe_dist_title">Khoảng cách vuốt</string>
   <string name="pref_swipe_dist_summary">Khoảng cách giữa các ký tự ở góc phím (%s)</string>
@@ -90,6 +88,7 @@ Bây giờ đã hoàn hảo cho việc sử dụng hàng ngày.
   <!-- <string name="launcher_description">This application is a virtual keyboard. Go to the system settings by clicking on the button below and enable Unexpected-Keyboard.</string> -->
   <!-- <string name="launcher_sourcecode">This is an free and open source application. You can find the source code or report bugs on Github.</string> -->
   <!-- <string name="launcher_tryhere">After enabling, you can try the keyboard here:</string> -->
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ Bây giờ đã hoàn hảo cho việc sử dụng hàng ngày.
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">Nâng cao</string>
 </resources>
diff --git a/res/values-zh-rCN/strings.xml b/res/values-zh-rCN/strings.xml
index d9a93a6..e2c8415 100644
--- a/res/values-zh-rCN/strings.xml
+++ b/res/values-zh-rCN/strings.xml
@@ -35,8 +35,6 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="pref_extra_keys_title">选择要显示的按键</string>
   <!-- <string name="pref_extra_keys_custom">Add custom keys</string> -->
   <!-- <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string> -->
-  <string name="pref_second_layout_title">第二键盘布局</string>
-  <string name="pref_second_layout_none">无</string>
   <string name="pref_category_typing">输入</string>
   <string name="pref_swipe_dist_title">滑动触发距离</string>
   <string name="pref_swipe_dist_summary">输入按键四角的符号需要滑动的距离 (%s)</string>
@@ -90,6 +88,7 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="launcher_description">这是一个虚拟键盘软件。点击按钮进入系统设置，然后启用 Unexpected-Keyboard 即可使用。</string>
   <string name="launcher_sourcecode">这是一个免费且开源的软件。你可以在 Github 上找到源代码或者反馈 bug。</string>
   <string name="launcher_tryhere">启用键盘后，可以在这里测试效果：</string>
+  <!-- <string name="launcher_tryhere_hint">Try here</string> -->
   <!-- <string name="key_descr_capslock">Caps lock</string> -->
   <!-- <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string> -->
   <!-- <string name="key_descr_change_method">Switch keyboard</string> -->
@@ -110,5 +109,4 @@ This application contains no ads, doesn't make any network requests and is Open
   <!-- <string name="key_descr_page_down">Page Down</string> -->
   <!-- <string name="key_descr_home">Home</string> -->
   <!-- <string name="key_descr_end">End</string> -->
-  <string name="pref_category_advanced">高级设置</string>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 313475d..e334706 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -35,8 +35,6 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="pref_extra_keys_title">Add keys to the keyboard</string>
   <string name="pref_extra_keys_custom">Add custom keys</string>
   <string name="pref_extra_keys_internal">Select keys to add to the keyboard</string>
-  <string name="pref_second_layout_title">Secondary layout</string>
-  <string name="pref_second_layout_none">None</string>
   <string name="pref_category_typing">Typing</string>
   <string name="pref_swipe_dist_title">Swiping distance</string>
   <string name="pref_swipe_dist_summary">Distance of characters in the corners of the keys (%s)</string>
@@ -90,6 +88,7 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="launcher_description">This application is a virtual keyboard. Go to the system settings by clicking on the button below and enable Unexpected-Keyboard.</string>
   <string name="launcher_sourcecode">This is an free and open source application. You can find the source code or report bugs on Github.</string>
   <string name="launcher_tryhere">After enabling, you can try the keyboard here:</string>
+  <string name="launcher_tryhere_hint">Try here</string>
   <string name="key_descr_capslock">Caps lock</string>
   <string name="key_descr_switch_greekmath">Greek &amp; math symbols</string>
   <string name="key_descr_change_method">Switch keyboard</string>
@@ -110,6 +109,4 @@ This application contains no ads, doesn't make any network requests and is Open
   <string name="key_descr_page_down">Page Down</string>
   <string name="key_descr_home">Home</string>
   <string name="key_descr_end">End</string>
-  <!-- Unused -->
-  <string name="pref_category_advanced">Advanced</string>
 </resources>
diff --git a/res/values/values.xml b/res/values/values.xml
index 8e40307..cc048e9 100644
--- a/res/values/values.xml
+++ b/res/values/values.xml
@@ -2,7 +2,6 @@
 <resources>
   <dimen name="margin_top">3dp</dimen>
   <dimen name="key_padding">2dp</dimen>
-  <dimen name="emoji_type_button_height">56dp</dimen>
   <dimen name="emoji_grid_height">250dp</dimen>
   <dimen name="emoji_text_size">28dp</dimen>
   <dimen name="pref_button_size">28dp</dimen>
diff --git a/srcs/juloo.keyboard2/Config.java b/srcs/juloo.keyboard2/Config.java
index a39486d..9f95519 100644
--- a/srcs/juloo.keyboard2/Config.java
+++ b/srcs/juloo.keyboard2/Config.java
@@ -435,7 +435,7 @@ public final class Config
       case 1:
       default: break;
     }
-    e.commit();
+    e.apply();
   }
 
   private static LayoutsPreference.Layout migrate_layout(String name)
diff --git a/srcs/juloo.keyboard2/DirectBootAwarePreferences.java b/srcs/juloo.keyboard2/DirectBootAwarePreferences.java
index fcc67c6..df1612e 100644
--- a/srcs/juloo.keyboard2/DirectBootAwarePreferences.java
+++ b/srcs/juloo.keyboard2/DirectBootAwarePreferences.java
@@ -59,7 +59,7 @@ public final class DirectBootAwarePreferences
       // Device is locked, migrate later.
       return;
     }
-    prefs.edit().putBoolean("need_migration", false).commit();
+    prefs.edit().putBoolean("need_migration", false).apply();
     copy_shared_preferences(prefs, protected_prefs);
   }
 
@@ -83,6 +83,6 @@ public final class DirectBootAwarePreferences
       else if (v instanceof Set)
         e.putStringSet(k, (Set<String>)v);
     }
-    e.commit();
+    e.apply();
   }
 }
diff --git a/srcs/juloo.keyboard2/KeyEventHandler.java b/srcs/juloo.keyboard2/KeyEventHandler.java
index 51d4385..65de779 100644
--- a/srcs/juloo.keyboard2/KeyEventHandler.java
+++ b/srcs/juloo.keyboard2/KeyEventHandler.java
@@ -1,5 +1,6 @@
 package juloo.keyboard2;
 
+import android.annotation.SuppressLint;
 import android.os.Looper;
 import android.text.InputType;
 import android.view.KeyEvent;
@@ -197,6 +198,7 @@ public final class KeyEventHandler implements Config.IKeyEventHandler
     conn.performContextMenuAction(id);
   }
 
+  @SuppressLint("InlinedApi")
   void handle_editing_key(KeyValue.Editing ev)
   {
     switch (ev)
diff --git a/srcs/juloo.keyboard2/Keyboard2View.java b/srcs/juloo.keyboard2/Keyboard2View.java
index 42c93ca..fb95412 100644
--- a/srcs/juloo.keyboard2/Keyboard2View.java
+++ b/srcs/juloo.keyboard2/Keyboard2View.java
@@ -77,12 +77,14 @@ public class Keyboard2View extends View
       return;
     // The intermediate Window is a [Dialog].
     Window w = getParentWindow(context);
+    w.setNavigationBarColor(_theme.colorNavBar);
+    if (VERSION.SDK_INT < 26)
+      return;
     int uiFlags = getSystemUiVisibility();
     if (_theme.isLightNavBar)
       uiFlags |= View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
     else
       uiFlags &= ~View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR;
-    w.setNavigationBarColor(_theme.colorNavBar);
     setSystemUiVisibility(uiFlags);
   }
 
diff --git a/srcs/juloo.keyboard2/Utils.java b/srcs/juloo.keyboard2/Utils.java
index 712c83d..f0f3036 100644
--- a/srcs/juloo.keyboard2/Utils.java
+++ b/srcs/juloo.keyboard2/Utils.java
@@ -6,6 +6,7 @@ import android.view.Window;
 import android.view.WindowManager;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.util.Locale;
 
 public final class Utils
 {
@@ -16,7 +17,7 @@ public final class Utils
       return s;
     // Make sure not to cut a code point in half
     int i = s.offsetByCodePoints(0, 1);
-    return s.substring(0, i).toUpperCase() + s.substring(i);
+    return s.substring(0, i).toUpperCase(Locale.getDefault()) + s.substring(i);
   }
 
   /** Like [dialog.show()] but properly configure layout params when called
diff --git a/srcs/juloo.keyboard2/VoiceImeSwitcher.java b/srcs/juloo.keyboard2/VoiceImeSwitcher.java
index 56bd33d..d228130 100644
--- a/srcs/juloo.keyboard2/VoiceImeSwitcher.java
+++ b/srcs/juloo.keyboard2/VoiceImeSwitcher.java
@@ -65,7 +65,7 @@ class VoiceImeSwitcher
           prefs.edit()
             .putString(PREF_LAST_USED, selected.get_id())
             .putString(PREF_KNOWN_IMES, serialize_ime_ids(imes))
-            .commit();
+            .apply();
           switch_input_method(ims, selected);
         }
       })