#1950 fix: do not export TrampolineActivity

Author: sds100

system/src/main/AndroidManifest.xml

@@ -22,7 +22,8 @@
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.WRITE_SETTINGS" />
     <uses-permission android:name="android.permission.CALL_PHONE" />
-    <uses-permission android:name="android.permission.SEND_SMS"
+    <uses-permission
+        android:name="android.permission.SEND_SMS"
         tools:ignore="SmsAndCallLogPolicy" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
 
@@ -108,9 +109,9 @@
         <activity
             android:name=".apps.TrampolineActivity"
             android:excludeFromRecents="true"
-            android:exported="true"
+            android:exported="false"
             android:finishOnTaskLaunch="true"
             android:launchMode="singleInstance"
-            android:theme="@android:style/Theme.NoDisplay"></activity>
+            android:theme="@android:style/Theme.NoDisplay" />
     </application>
 </manifest>