How do i detect 2 numbers phone from the front

MIT App Inventor Help
1

Hi all,
how do i detect 2 numbers from the front?
i have number, i use this with textboxt1 : 087777777266788
but if i write the number not 08 then an error will occur through the notification
thank all for help

2

Use the segment text block, and use it on the TextBox1.text. Compare that value with "08," and proceed from there.

3

ok i try now

4

compare textbox1 = 08
start 1
length 2

not work why

5

please show how you've implemented this in blocks

6

correct
this is my block

7

Screenshot_2023-09-03-09-14-08-323_com.android.chrome

8

the event should be textbox.changed

9

oh just now I got the solution, thanks for reply nishyanthkumar
correct

10

It can't be on Screen1 Initialize, there isn't anything in the TextBox at that time? Also you haven't incorporated Nishyanth's code!

1 Like
11

correct
in button

12

You are using the replace all block...
The correct block to be used is the segment block...

Taifun

1 Like
15

ok thanks taifun

16

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