added width constraints in landscape mode to prevent too much stretching on tablets and other large devices

app/build.gradle

@@ -126,4 +126,5 @@ android {
 
 dependencies {
 	implementation 'androidx.preference:preference:1.2.1'
+	implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
 }

app/src/main/res/layout/main_numpad.xml

@@ -1,9 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
 	xmlns:tools="http://schemas.android.com/tools"
 	android:layout_width="match_parent"
 	android:layout_height="wrap_content"
-	android:orientation="vertical">
+	android:gravity="center_horizontal">
+
+	<androidx.constraintlayout.widget.ConstraintLayout
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:maxWidth="@dimen/numpad_max_width"
+		app:layout_constraintStart_toStartOf="parent"
+		app:layout_constraintTop_toTopOf="parent">
+
+		<LinearLayout
+			android:id="@+id/linearLayout"
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:orientation="vertical"
+			app:layout_constraintEnd_toEndOf="parent"
+			app:layout_constraintStart_toStartOf="parent"
+			app:layout_constraintTop_toTopOf="parent">
 
 			<View
 				android:id="@+id/separator_top"
@@ -11,7 +28,7 @@
 
 			<LinearLayout
 				android:id="@+id/status_bar_container"
-		android:layout_width="fill_parent"
+				android:layout_width="match_parent"
 				android:layout_height="@dimen/numpad_candidate_height"
 				android:layoutDirection="ltr">
 
@@ -19,7 +36,7 @@
 					android:id="@+id/soft_key_left_arrow"
 					style="@android:style/Widget.Holo.Button.Borderless"
 					android:layout_width="@dimen/numpad_arrow_key_width"
-			android:layout_height="fill_parent"
+					android:layout_height="match_parent"
 					android:text="@string/key_dpad_left"
 					android:textSize="@dimen/soft_key_icon_size" />
 
@@ -29,7 +46,7 @@
 
 				<FrameLayout
 					android:layout_width="0dp"
-			android:layout_height="fill_parent"
+					android:layout_height="match_parent"
 					android:layout_weight="1">
 
 					<TextView
@@ -58,7 +75,7 @@
 					android:id="@+id/soft_key_right_arrow"
 					style="@android:style/Widget.Holo.Button.Borderless"
 					android:layout_width="@dimen/numpad_arrow_key_width"
-			android:layout_height="fill_parent"
+					android:layout_height="match_parent"
 					android:text="@string/key_dpad_right"
 					android:textSize="@dimen/soft_key_icon_size" />
 
@@ -312,3 +329,5 @@
 			</LinearLayout>
 
 		</LinearLayout>
+	</androidx.constraintlayout.widget.ConstraintLayout>
+</LinearLayout>

app/src/main/res/values-land/dimens.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<dimen name="numpad_max_width">720dp</dimen>
+</resources>

app/src/main/res/values/dimens.xml

@@ -21,6 +21,7 @@
 	<dimen name="pref_padding_vertical">12dp</dimen>
 
 	<!-- Numpad -->
+	<dimen name="numpad_max_width">10000dp</dimen>
 	<dimen name="numpad_padding_bottom">2dp</dimen>
 	<dimen name="numpad_row_separator_margin">0dp</dimen>