Improved UI (ListeningActivity) working fine "in-app" but not outside

app/src/main/AndroidManifest.xml

@@ -22,11 +22,8 @@
             android:enabled="true"
             android:exported="false"/>
 
-        <activity
+        <activity android:name=".ListeningActivity"
-            android:name=".ListeningActivity"
+            android:theme="@style/Theme.Transparent" />
-            android:exported="true"
-            android:label="Listening"
-            android:theme="@style/Theme.AppCompat.Transparent.NoActionBar"/>
 
         <activity android:name=".Main"
             android:exported="false">

app/src/main/java/ch/mathieubroillet/jarvis/android/ListeningActivity.java

@@ -3,6 +3,7 @@ package ch.mathieubroillet.jarvis.android;
 import android.app.KeyguardManager;
 import android.content.Context;
 import android.os.Bundle;
+import android.view.View;
 import android.view.WindowManager;
 
 import androidx.appcompat.app.AppCompatActivity;
@@ -30,4 +31,8 @@ public class ListeningActivity extends AppCompatActivity {
         setContentView(R.layout.activity_listening);
 
     }
+
+    public void quit(View view) {
+        finish();
+    }
 }

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

@@ -3,13 +3,29 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/RelativeLayout"
-    android:layout_width="match_parent"
+    android:layout_width="fill_parent"
-    android:layout_height="match_parent"
+    android:layout_height="fill_parent"
 
     android:background="#66000000"
     tools:context="ch.mathieubroillet.jarvis.android.ListeningActivity">
 
 
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <Button
+            android:id="@+id/button_quit"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_marginBottom="300dp"
+            android:fontFamily="@font/google_bold"
+            android:alpha="0"
+            android:onClick="quit"
+            android:text="" />
+    </LinearLayout>
+
     <RelativeLayout
         android:layout_width="match_parent"
         android:layout_height="300dp"
@@ -18,6 +34,17 @@
         android:background="@drawable/rounded_white_on_top">
 
 
+        <TextView
+            android:id="@+id/textView2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:layout_centerHorizontal="true"
+            android:layout_marginTop="30dp"
+            android:fontFamily="@font/google_regular"
+            android:text="@string/listening"
+            android:textSize="30dp" />
+
         <ProgressBar
             android:id="@+id/progressBar"
             android:layout_width="wrap_content"
@@ -27,5 +54,6 @@
             android:layout_alignParentBottom="true" />
     </RelativeLayout>
 
+
 </RelativeLayout>
 

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

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">Jarvis Client Android</string>
+    <string name="listening">Je vous écoute…</string>
 </resources>

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

@@ -9,4 +9,13 @@
         <item name="android:windowIsFloating">true</item>
         <item name="android:backgroundDimEnabled">false</item>
     </style>
+
+    <style name="Theme.Transparent" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:backgroundDimEnabled">true</item>
+        <item name="colorPrimaryDark">@android:color/transparent</item>
+    </style>
 </resources>