B4J Question Controlling test input into textfield?

[colin van Blommestein]

Hi Erel
Any chance you've created a video on controlling textField input?
i.e where input is restricted to a string of characters (e.g. :,"abcdef....xyz","YN", "XYX") and numeric characters (e.g. 0123456789." ?
Coupled with editing features using keyboard keypress control characters e.g CR, BS, DEL, INS, ESC, etc
If no video, is there code available that does specifically this.

Cheers
Colin

 

[Erel]

Hi Erel

This is a community forum. You shouldn't limit your questions to a single member.

You can handle the TextChanged event and remove invalid characters. The user experience will be bad. A better approach is to check the value before you "use" it.
Or use B4XInputTemplate: https://www.b4x.com/android/forum/threads/b4x-input-dialogs-with-xui-views.101197/