diff --git a/.editorconfig b/.editorconfig
index a71703035..ee1188a76 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -11,5 +11,3 @@ trim_trailing_whitespace = true
 [*.md]
 indent_style = space
 trim_trailing_whitespace = true
-
-[package.json]
diff --git a/res/layout/addwordview.xml b/res/layout/addwordview.xml
index 050117857..54faa908c 100644
--- a/res/layout/addwordview.xml
+++ b/res/layout/addwordview.xml
@@ -30,7 +30,6 @@
 		android:gravity="end">
 
 		<Button
-			android:id="@+id/add_word_cancel"
 			style="@style/Widget.AppCompat.Button.Borderless.Colored"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
@@ -39,7 +38,6 @@
 			android:text="@android:string/cancel" />
 
 		<Button
-			android:id="@+id/add_word_add"
 			style="@style/Widget.AppCompat.Button.Borderless.Colored"
 			android:layout_width="wrap_content"
 			android:layout_height="wrap_content"
diff --git a/res/layout/main_numpad.xml b/res/layout/main_numpad.xml
index c09a636c2..92773a74d 100644
--- a/res/layout/main_numpad.xml
+++ b/res/layout/main_numpad.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:tools="http://schemas.android.com/tools"
-	android:id="@+id/main_numpad"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
 	android:orientation="vertical">
@@ -85,7 +84,6 @@
 				style="@style/numSeparator" />
 
 			<io.github.sspanak.tt9.ui.main.keys.SoftBackspaceKey
-				android:id="@+id/soft_key_backspace"
 				style="@android:style/Widget.Holo.Button.Borderless"
 				android:layout_width="0dp"
 				android:layout_height="match_parent"
diff --git a/res/layout/main_small.xml b/res/layout/main_small.xml
index 3d49cf0ab..5b67a4597 100644
--- a/res/layout/main_small.xml
+++ b/res/layout/main_small.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	xmlns:tools="http://schemas.android.com/tools"
-	android:id="@+id/main_small"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
 	android:orientation="vertical">
@@ -68,7 +67,6 @@
 			style="@style/hSeparator" />
 
 		<io.github.sspanak.tt9.ui.main.keys.SoftBackspaceKey
-			android:id="@+id/soft_key_backspace"
 			style="@android:style/Widget.Holo.Button.Borderless"
 			android:layout_width="0dp"
 			android:layout_height="match_parent"
diff --git a/res/layout/suggestion_list.xml b/res/layout/suggestion_list.xml
index 5233e5884..8f7d0e6f2 100644
--- a/res/layout/suggestion_list.xml
+++ b/res/layout/suggestion_list.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	android:id="@+id/suggestion_list_view"
 	android:layout_width="wrap_content"
 	android:layout_height="match_parent"
 	android:orientation="horizontal">
diff --git a/res/layout/suggestion_list_numpad.xml b/res/layout/suggestion_list_numpad.xml
index 182049578..675843fb5 100644
--- a/res/layout/suggestion_list_numpad.xml
+++ b/res/layout/suggestion_list_numpad.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-	android:id="@+id/suggestion_list_view"
 	android:layout_width="wrap_content"
 	android:layout_height="match_parent"
 	android:orientation="horizontal">
diff --git a/res/values-bg/strings.xml b/res/values-bg/strings.xml
index e1bd54f5e..a0a39d0e7 100644
--- a/res/values-bg/strings.xml
+++ b/res/values-bg/strings.xml
@@ -37,7 +37,6 @@
 	<string name="function_reset_keys_done">Възстановени са стандартните „бързи“ бутони.</string>
 	<string name="setup_keyboard_status">Състояние</string>
 	<string name="setup_default_keyboard">Избор на клавиатура по подразбиране</string>
-	<string name="setup_goto_main_screen">Назад към Настройки</string>
 	<string name="setup_tt9_on">Traditional T9 е активен</string>
 	<string name="setup_tt9_off">Traditional T9 е изключен</string>
 	<string name="setup_click_here_to_enable">Натиснете тук, за да включите TT9 от настройките на Андроид.</string>
diff --git a/res/values-es/strings.xml b/res/values-es/strings.xml
index f2193c9eb..295920e15 100644
--- a/res/values-es/strings.xml
+++ b/res/values-es/strings.xml
@@ -17,7 +17,6 @@
 	<string name="char_space">Espacio</string>
 	<string name="setup_keyboard_status">Estado</string>
 	<string name="setup_default_keyboard">Selecciona teclado predeterminado</string>
-	<string name="setup_goto_main_screen">Volver a la pantalla de configuración</string>
 	<string name="char_newline">Nueva línea</string>
 	<string name="dictionary_load_title">Cargar diccionario</string>
 	<string name="dictionary_loading_indeterminate">Cargando diccionario</string>
diff --git a/res/values-fr/strings.xml b/res/values-fr/strings.xml
index 79fa297b5..166683cfd 100644
--- a/res/values-fr/strings.xml
+++ b/res/values-fr/strings.xml
@@ -39,7 +39,6 @@
 	<string name="char_space">Espace</string>
 	<string name="setup_keyboard_status">État</string>
 	<string name="setup_default_keyboard">Sélectionnez le clavier par défaut</string>
-	<string name="setup_goto_main_screen">Retour à l\'écran des paramètres</string>
 	<string name="setup_tt9_on">Traditional T9 est activé</string>
 	<string name="setup_tt9_off">Traditional T9 est désactivé</string>
 	<string name="setup_click_here_to_enable">Cliquez ici pour activer TT9 dans les paramètres Android.</string>
diff --git a/res/values-it/strings.xml b/res/values-it/strings.xml
index 360b01628..f9de57065 100644
--- a/res/values-it/strings.xml
+++ b/res/values-it/strings.xml
@@ -26,7 +26,6 @@
 	<string name="char_space">Spazio</string>
 	<string name="setup_keyboard_status">Stato</string>
 	<string name="setup_default_keyboard">Scegli Tastiera predefinita</string>
-	<string name="setup_goto_main_screen">Torna a Impostazioni</string>
 	<string name="char_newline">Nuova riga</string>
 	<string name="pref_upside_down_keys">Invertire l\'ordine delle chiavi</string>
 	<string name="pref_upside_down_keys_summary">Abilita l\'impostazione se ci sono 7–8–9 sulla prima riga, invece di 1–2–3.</string>
diff --git a/res/values-ru/strings.xml b/res/values-ru/strings.xml
index b172c5fe8..78d07e9fe 100644
--- a/res/values-ru/strings.xml
+++ b/res/values-ru/strings.xml
@@ -47,7 +47,6 @@
 	<string name="function_reset_keys_done">Настройки кнопок по умолчанию восстановлены.</string>
 	<string name="setup_keyboard_status">Состояние</string>
 	<string name="setup_default_keyboard">Выберите клавиатуру по умолчанию</string>
-	<string name="setup_goto_main_screen">Вернуться к настройкам</string>
 	<string name="setup_tt9_on">Traditional T9 активен</string>
 	<string name="setup_tt9_off">Traditional T9 отключен</string>
 	<string name="setup_click_here_to_enable">Нажмите здесь, чтобы включить TT9 в настройках Android.</string>
diff --git a/res/values-uk/strings.xml b/res/values-uk/strings.xml
index 2c8b4bc49..54a82f798 100644
--- a/res/values-uk/strings.xml
+++ b/res/values-uk/strings.xml
@@ -39,7 +39,6 @@
 	<string name="key_call">Виклик</string>
 	<string name="setup_keyboard_status">Стан</string>
 	<string name="setup_default_keyboard">Вибрати стандартну клавіатуру</string>
-	<string name="setup_goto_main_screen">Назад до налаштувань</string>
 	<string name="setup_tt9_on">Traditional T9 активний</string>
 	<string name="setup_tt9_off">Traditional T9 вимкнено</string>
 	<string name="setup_click_here_to_enable">Натисніть тут, щоб увімкнути TT9 в налаштуваннях Android.</string>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index a46c5d0d3..c8c9d4c73 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -60,7 +60,6 @@
 
 	<string name="setup_keyboard_status">Status</string>
 	<string name="setup_default_keyboard">Select Default Keyboard</string>
-	<string name="setup_goto_main_screen">Return to Settings</string>
 	<string name="setup_tt9_on">Traditional T9 is enabled</string>
 	<string name="setup_tt9_off">Traditional T9 is disabled</string>
 	<string name="setup_click_here_to_enable">Click here to enable TT9 from Android Settings.</string>
diff --git a/src/io/github/sspanak/tt9/db/DictionaryLoader.java b/src/io/github/sspanak/tt9/db/DictionaryLoader.java
index a05db5b2d..b9adad528 100644
--- a/src/io/github/sspanak/tt9/db/DictionaryLoader.java
+++ b/src/io/github/sspanak/tt9/db/DictionaryLoader.java
@@ -216,7 +216,7 @@ private void importWords(Language language, String dictionaryFile) throws Except
 			try {
 				dbWords.add(stringToWord(language, word, frequency));
 			} catch (InvalidLanguageCharactersException e) {
-				throw new DictionaryImportException(dictionaryFile, word, lineCount);
+				throw new DictionaryImportException(word, lineCount);
 			}
 
 			if (lineCount % settings.getDictionaryImportWordChunkSize() == 0 || lineCount == totalWords - 1) {
diff --git a/src/io/github/sspanak/tt9/db/exceptions/DictionaryImportException.java b/src/io/github/sspanak/tt9/db/exceptions/DictionaryImportException.java
index 2d91502a5..390533ac3 100644
--- a/src/io/github/sspanak/tt9/db/exceptions/DictionaryImportException.java
+++ b/src/io/github/sspanak/tt9/db/exceptions/DictionaryImportException.java
@@ -1,13 +1,11 @@
 package io.github.sspanak.tt9.db.exceptions;
 
 public class DictionaryImportException extends Exception {
-	public final String file;
 	public final String word;
 	public final long line;
 
-	public DictionaryImportException(String file, String word, long line) {
+	public DictionaryImportException(String word, long line) {
 		super("Dictionary import failed");
-		this.file = file;
 		this.word = word;
 		this.line = line;
 	}
diff --git a/src/io/github/sspanak/tt9/ime/KeyPadHandler.java b/src/io/github/sspanak/tt9/ime/KeyPadHandler.java
index 8145af109..82572def4 100644
--- a/src/io/github/sspanak/tt9/ime/KeyPadHandler.java
+++ b/src/io/github/sspanak/tt9/ime/KeyPadHandler.java
@@ -15,13 +15,6 @@ abstract class KeyPadHandler extends InputMethodService {
 
 	protected SettingsStore settings;
 
-	// editing mode
-	protected static final int NON_EDIT = 0;
-	protected static final int EDITING = 1;
-	protected static final int EDITING_STRICT_NUMERIC = 3;
-	protected static final int EDITING_DIALER = 4; // see: https://github.com/sspanak/tt9/issues/46
-	protected int mEditing = NON_EDIT;
-
 	// temporal key handling
 	private boolean isBackspaceHandled = false;
 
@@ -51,7 +44,7 @@ public void onCreate() {
 	public boolean onEvaluateInputViewShown() {
 		super.onEvaluateInputViewShown();
 		onRestart(getCurrentInputEditorInfo());
-		return mEditing != EDITING_DIALER && mEditing != NON_EDIT;
+		return shouldBeVisible();
 	}
 
 
@@ -96,9 +89,7 @@ public void onStartInputView(EditorInfo inputField, boolean restarting) {
 	@Override
 	public void onFinishInputView(boolean finishingInput) {
 		super.onFinishInputView(finishingInput);
-		if (mEditing == EDITING || mEditing == EDITING_STRICT_NUMERIC) {
-			onFinishTyping();
-		}
+		onFinishTyping();
 	}
 
 	/**
@@ -109,9 +100,7 @@ public void onFinishInputView(boolean finishingInput) {
 	public void onFinishInput() {
 		super.onFinishInput();
 		// Logger.d("onFinishInput", "When is this called?");
-		if (mEditing == EDITING || mEditing == EDITING_STRICT_NUMERIC) {
-			onStop();
-		}
+		onStop();
 	}
 
 
@@ -122,7 +111,7 @@ public void onFinishInput() {
 	 */
 	@Override
 	public boolean onKeyDown(int keyCode, KeyEvent event) {
-		if (isOff()) {
+		if (shouldBeOff()) {
 			return super.onKeyDown(keyCode, event);
 		}
 
@@ -161,7 +150,7 @@ public boolean onKeyDown(int keyCode, KeyEvent event) {
 
 	@Override
 	public boolean onKeyLongPress(int keyCode, KeyEvent event) {
-		if (isOff()) {
+		if (shouldBeOff()) {
 			return super.onKeyLongPress(keyCode, event);
 		}
 
@@ -200,7 +189,7 @@ public boolean onKeyLongPress(int keyCode, KeyEvent event) {
 	 */
 	@Override
 	public boolean onKeyUp(int keyCode, KeyEvent event) {
-		if (isOff()) {
+		if (shouldBeOff()) {
 			return super.onKeyUp(keyCode, event);
 		}
 
@@ -273,11 +262,6 @@ private boolean handleHotkey(int keyCode, boolean hold) {
 	}
 
 
-	private boolean isOff() {
-		return currentInputConnection == null || mEditing == NON_EDIT;
-	}
-
-
 	protected void resetKeyRepeat() {
 		numKeyRepeatCounter = 0;
 		keyRepeatCounter = 0;
@@ -312,5 +296,9 @@ protected void resetKeyRepeat() {
 	abstract protected void onRestart(EditorInfo inputField);
 	abstract protected void onFinishTyping();
 	abstract protected void onStop();
+
+	// UI
 	abstract protected View createSoftKeyView();
+	abstract protected boolean shouldBeVisible();
+	abstract protected boolean shouldBeOff();
 }
diff --git a/src/io/github/sspanak/tt9/ime/TraditionalT9.java b/src/io/github/sspanak/tt9/ime/TraditionalT9.java
index e34495715..76c72cf90 100644
--- a/src/io/github/sspanak/tt9/ime/TraditionalT9.java
+++ b/src/io/github/sspanak/tt9/ime/TraditionalT9.java
@@ -34,6 +34,13 @@ public class TraditionalT9 extends KeyPadHandler {
 	private TextField textField;
 	private InputType inputType;
 
+	// editing mode
+	protected static final int NON_EDIT = 0;
+	protected static final int EDITING = 1;
+	protected static final int EDITING_STRICT_NUMERIC = 3;
+	protected static final int EDITING_DIALER = 4; // see: https://github.com/sspanak/tt9/issues/46
+	protected int mEditing = NON_EDIT;
+
 	// input mode
 	private ArrayList<Integer> allowedInputModes = new ArrayList<>();
 	private InputMode mInputMode;
@@ -365,6 +372,7 @@ public boolean onKeyNextLanguage() {
 			return true;
 		}
 
+
 		return false;
 	}
 
@@ -505,14 +513,9 @@ private void setSuggestions(List<String> suggestions) {
 	}
 
 	private void setSuggestions(List<String> suggestions, int selectedIndex) {
-		if (suggestionBar == null) {
-			return;
+		if (suggestionBar != null) {
+			suggestionBar.setSuggestions(suggestions, selectedIndex);
 		}
-
-		boolean show = suggestions != null && suggestions.size() > 0;
-
-		suggestionBar.setSuggestions(suggestions, selectedIndex);
-		setCandidatesViewShown(show);
 	}
 
 
@@ -572,15 +575,10 @@ else if (mInputMode.isABC() && mInputMode.getTextCase() == InputMode.CASE_LOWER
 
 
 	private boolean nextLang() {
-		if (mEditing == EDITING_STRICT_NUMERIC || mEditing == EDITING_DIALER) {
+		if (mInputMode.is123() || mEnabledLanguages.size() < 2) {
 			return false;
 		}
 
-		// when only one language is enabled, just acknowledge the key was pressed
-		if (mEnabledLanguages.size() < 2) {
-			return true;
-		}
-
 		// select the next language
 		int previous = mEnabledLanguages.indexOf(mLanguage.getId());
 		int next = (previous + 1) % mEnabledLanguages.size();
@@ -743,4 +741,16 @@ protected void forceShowWindowIfHidden() {
 			requestShowSelf(InputMethodManager.SHOW_IMPLICIT);
 		}
 	}
+
+
+	@Override
+	protected boolean shouldBeVisible() {
+		return mEditing != EDITING_DIALER && mEditing != NON_EDIT;
+	}
+
+
+	@Override
+	protected boolean shouldBeOff() {
+		 return currentInputConnection == null || mEditing == NON_EDIT;
+	}
 }
diff --git a/src/io/github/sspanak/tt9/ime/helpers/TextField.java b/src/io/github/sspanak/tt9/ime/helpers/TextField.java
index e845a3773..198483745 100644
--- a/src/io/github/sspanak/tt9/ime/helpers/TextField.java
+++ b/src/io/github/sspanak/tt9/ime/helpers/TextField.java
@@ -317,6 +317,10 @@ private CharSequence highlightText(CharSequence word, int start, int end, boolea
 
 
 	public int getAction() {
+		if (field == null) {
+			return EditorInfo.IME_ACTION_NONE;
+		}
+
 		if (field.actionId > 0) {
 			return field.actionId; // custom action, defined by the connected app
 		}
diff --git a/src/io/github/sspanak/tt9/languages/InvalidLanguageCharactersException.java b/src/io/github/sspanak/tt9/languages/InvalidLanguageCharactersException.java
index 2da2fe623..44329c9b6 100644
--- a/src/io/github/sspanak/tt9/languages/InvalidLanguageCharactersException.java
+++ b/src/io/github/sspanak/tt9/languages/InvalidLanguageCharactersException.java
@@ -1,11 +1,9 @@
 package io.github.sspanak.tt9.languages;
 
 public class InvalidLanguageCharactersException extends Exception {
-	private final Language language;
 
 	public InvalidLanguageCharactersException(Language language, String extraMessage) {
 		super("Some characters are not supported in language: " + language.getName() + ". " + extraMessage);
-		this.language = language;
 	}
 
 }
diff --git a/src/io/github/sspanak/tt9/languages/definitions/Spanish.java b/src/io/github/sspanak/tt9/languages/definitions/Spanish.java
index 120c73c14..8b57cf085 100644
--- a/src/io/github/sspanak/tt9/languages/definitions/Spanish.java
+++ b/src/io/github/sspanak/tt9/languages/definitions/Spanish.java
@@ -2,7 +2,6 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Locale;
 
 import io.github.sspanak.tt9.languages.Characters;
diff --git a/src/io/github/sspanak/tt9/preferences/SettingsStore.java b/src/io/github/sspanak/tt9/preferences/SettingsStore.java
index 8b7a1a55f..e2346af2b 100644
--- a/src/io/github/sspanak/tt9/preferences/SettingsStore.java
+++ b/src/io/github/sspanak/tt9/preferences/SettingsStore.java
@@ -232,7 +232,6 @@ public String getDoubleZeroChar() {
 	public int getSuggestionSelectAnimationDuration() { return 66; }
 	public int getSuggestionTranslateAnimationDuration() { return 0; }
 
-	public int getSoftKeyInitialDelay() { return 250; /* ms */ }
 	public int getSoftKeyRepeatDelay() { return 40; /* ms */ }
 
 	public int getWordFrequencyMax() { return 25500; }
diff --git a/src/io/github/sspanak/tt9/preferences/items/ItemSelectLanguage.java b/src/io/github/sspanak/tt9/preferences/items/ItemSelectLanguage.java
index 7d2e3f5fd..56471fb1d 100644
--- a/src/io/github/sspanak/tt9/preferences/items/ItemSelectLanguage.java
+++ b/src/io/github/sspanak/tt9/preferences/items/ItemSelectLanguage.java
@@ -52,7 +52,7 @@ public void enableValidation() {
 		}
 
 		item.setOnPreferenceChangeListener((preference, newValue) -> {
-			HashSet<String> newLanguages = (HashSet<String>) newValue;
+			@SuppressWarnings("unchecked") HashSet<String> newLanguages = (HashSet<String>) newValue;
 			if (newLanguages.size() == 0) {
 				newLanguages.add("1");
 			}