Masked input for b4a

[Rusty]

I would like to create a masked input for android. If a character is keyed into an edittext field that is not allowed, I would like to remove it from the edittext display. Typically, I'd do this with a keydown type function and then consume the keystroke instead of allowing it to make it into the edittext textbox. Any suggestions?

 

[Erel]

You can use the TextChanged event and verify the text each time.

 

[Rusty]

I did this, but when you change the value within the edittext, it triggers a text changed event again. This tends to cause some recursive code and causes the system to crash. Any recommendations appreciated.

 

[Erel]

You can use a global variable as a flag. Set it before changing the text and then clear it and return from the "unwanted" text changed event.

 

[Rusty]

Thanks, Erel. I had moved the testing of the values against the mask into the activity_keypress method. Basically, if there is a mask for the field being edited, it calls the testing routine, if there is no mask, then it passes the keystroke through.