Textbox Validation of email id and mobile number in thunkable adnroid application


Please tell me how can i apply validation in mobile number or email id.It means if someone enters less than 10 digit mobile no in text bos then it will show error or if someone enters wrong email id without @ sign then it will show error but how can i do same in thunkable android application.


you can use my extension here:


Any sample blocks to implement this extention? :slight_smile:
Thanks in advance


You need to learn some about regular expression first


Thank you @kevinkun, very good!

@Fajarfaizin, this is a good way…