How do I make a not saved notifier appear?

[Gayatri_Sahoo]

Hi,
So, I have created an Image Markup app. Now, I want it to give a notifier with buttons if the image is not saved by clicking the save button. Like, it will have the message "File not saved. Are you sure?" and it will have a "Save Image", "Don't Save Image" and "Cancel" button. How do I do this? Please also share the blocks.

[nishyanthkumar]

When and how is the Notifier going to be called?

[Gayatri_Sahoo]

It should be called if the exit button is pressed but before it, the save button is not pressed and the image is not saved.

[nishyanthkumar]

(below) This is probably the best way of saving a file:

Take picture and Save in TinyDB

1.- Take a Picture with Camera component. 2.- Write a tag and commentary. 3.- Save commentary in TinyDB1 4.- Convert Picture to String Base64 and save String in TinyDB2. 5.- Look Namespace in Properties TinyDB1 and TinyDB2. 6.- Write tag and Click in button to get and view picture and commentary. 7.- Get String of TinyDB2 and convert in File in ASD/auxiliary_dir/auxiliary_file.png 8.- Show ASD/auxiliary_dir/auxiliary_file.png in Image2 component. 9.- It needs extension com.KIO4_Base64.ai…

[ABG]

Look in the Screen1 blocks for an event that fires when the Android Back button is pressed.
That's another place to check global saved.