prevent avtivity from showing content in recent activity screen and prevent screenshots

Author: zoff99

android-refimpl-app/app/src/main/java/com/zoffcc/applications/trifa/ExportActivity.java

@@ -38,6 +38,7 @@
 import java.util.Iterator;
 import java.util.concurrent.ExecutionException;
 
+import static com.zoffcc.applications.trifa.CallingActivity.initializeScreenshotSecurity;
 import static com.zoffcc.applications.trifa.HelperGeneric.display_toast;
 import static com.zoffcc.applications.trifa.HelperGeneric.io_file_copy;
 import static com.zoffcc.applications.trifa.MainActivity.DB_SHM_EXT;
@@ -59,6 +60,9 @@ protected void onCreate(Bundle savedInstanceState)
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_export);
 
+        // prevent screenshots and also dont show the window content in recent activity screen
+        initializeScreenshotSecurity(this);
+
         TextView text_toxpass = findViewById(R.id.text_toxpass);
         TextView text_dbpass = findViewById(R.id.text_dbpass);