Opt in to predictive back gestures

app/src/main/AndroidManifest.xml

@@ -7,6 +7,7 @@
     <application
         android:name=".MarkdownApplication"
         android:allowBackup="true"
+        android:enableOnBackInvokedCallback="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:resizeableActivity="true"
@@ -14,7 +15,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.App.Starting"
         tools:ignore="AllowBackup"
-        tools:targetApi="n">
+        tools:targetApi="tiramisu">
         <activity android:name=".MainActivity"
             android:exported="true"
             android:label="@string/app_name_short">