recognize the app as a keyboard

app/src/main/AndroidManifest.xml

@@ -32,6 +32,26 @@
             android:name=".activities.SplashActivity"
             android:theme="@style/SplashTheme" />
 
+        <service
+            android:name=".helpers.SimpleKeyboardIME"
+            android:label="@string/app_name"
+            android:permission="android.permission.BIND_INPUT_METHOD">
+            <meta-data
+                android:name="android.view.im"
+                android:resource="@xml/method" />
+            <intent-filter>
+                <action android:name="android.view.InputMethod" />
+            </intent-filter>
+        </service>
+
+        <activity
+            android:name=".activities.SettingsActivity"
+            android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+            </intent-filter>
+        </activity>
+
         <activity-alias
             android:name=".activities.SplashActivity.Red"
             android:enabled="false"

app/src/main/kotlin/com/simplemobiletools/keyboard/activities/SettingsActivity.kt

@@ -0,0 +1,14 @@
+package com.simplemobiletools.keyboard.activities
+
+import android.os.Bundle
+import com.simplemobiletools.commons.extensions.appLaunched
+import com.simplemobiletools.keyboard.BuildConfig
+import com.simplemobiletools.keyboard.R
+
+class SettingsActivity : SimpleActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/keyboard/helpers/SimpleKeyboardIME.kt

@@ -0,0 +1,7 @@
+package com.simplemobiletools.keyboard.helpers
+
+import android.inputmethodservice.InputMethodService
+
+public class SimpleKeyboardIME : InputMethodService() {
+
+}

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/xml/method.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<input-method xmlns:android="http://schemas.android.com/apk/res/android"
+    android:icon="@mipmap/ic_launcher"
+    android:settingsActivity="com.simplemobiletools.keyboard.activities.SettingsActivity"
+    android:supportsSwitchingToNextInputMethod="true">
+
+    <subtype
+        android:imeSubtypeMode="Keyboard"
+        android:label="english" />
+
+</input-method>