Masked input for b4a

Rusty · Jan 18, 2011

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 · Jan 19, 2011

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

Rusty · Jan 19, 2011

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 · Jan 19, 2011

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 · Jan 19, 2011

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.

Masked input for b4a

Rusty

Well-Known Member

Erel

B4X founder

Rusty

Well-Known Member

Erel

B4X founder

Rusty

Well-Known Member

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