what to use?

[igoreshka3333]

Hello!
Can you tell me? I want to create an application that will be displayed on the widget text to be changed by pressing the button? What is good to use?
Thanks)

[wysota]

Could you rephrase your question please using simpler sentences? We have no idea what "widget" or "text" you mean and what is to be changed by pressing the button (and what button).