show a dialog at upgrading from the free version

Author: tibbi

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt

@@ -15,6 +15,7 @@ import android.widget.ImageView
 import android.widget.TextView
 import androidx.viewpager.widget.ViewPager
 import com.simplemobiletools.commons.dialogs.ConfirmationAdvancedDialog
+import com.simplemobiletools.commons.dialogs.ConfirmationDialog
 import com.simplemobiletools.commons.dialogs.RadioGroupDialog
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.*
@@ -97,6 +98,11 @@ class MainActivity : SimpleActivity() {
                 }
             }
         }
+
+        if (!config.wasUpgradedFromFreeShown && isPackageInstalled("com.simplemobiletools.filemanager")) {
+            ConfirmationDialog(this, "", R.string.upgraded_to_pro, R.string.ok, 0, false) {}
+            config.wasUpgradedFromFreeShown = true
+        }
     }
 
     override fun onResume() {