Help Output error

[Android Question]

We create an apps for the sum of two numbers. Finally, it display the error as below and closed automatically.
Unfortunatly, Twonumbers has ended

 

[Hadron]

The place for development questions is here: http://androidforums.com/threads/developers-please-read-this-before-posting-in-here.904569/

However, that message is too unspecific to tell anyone very much. If it really means "ended" rather than "closed" it might even just be that your code terminates after performing the calculation (i.e. you've not told it to continue running and await further input). Otherwise it's saying "the app's crashed", and there could be many, many reasons for that.