MIT APP Inventor 2 文本框属性为 integer

Question

I needs a text box which only allow integers bigger than "0". My blocks can make it to only accept positive numbers, but I have no idea how to make it an integer.

Answer 1

you only can set the textbox to numbers only true or false...
but you could try the textbox extension and its AfterTextChanged event to check, if a number < 0 was entered...

Answer 2

Please refer to the below. Tried to judge if it's a number first and then "round" it to be integer and then "absolute" it to be positive number.