set activity properties properly

Author: programminghoch10

VolumeStepsIncrease/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
             android:exported="true"
             android:label="@string/title_activity_settings"
             android:theme="@style/AppTheme"
+            android:excludeFromRecents="true"
             >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

VolumeStepsIncrease/src/main/java/com/programminghoch10/VolumeStepsIncrease/SettingsActivity.kt

@@ -25,9 +25,12 @@ class SettingsActivity : FragmentActivity() {
         if (savedInstanceState == null) {
             supportFragmentManager.beginTransaction().replace(R.id.settings, SettingsFragment()).commit()
         }
-        actionBar?.setDisplayHomeAsUpEnabled(
-            supportFragmentManager.backStackEntryCount > 0
-        )
+        actionBar?.setDisplayHomeAsUpEnabled(true)
+    }
+    
+    override fun onNavigateUp(): Boolean {
+        finish()
+        return super.onNavigateUp()
     }
 
     class SettingsFragment : PreferenceFragmentCompat() {