Slow response on TButton click

[Clayton A. Alves 0]

I've made a virtual number keyboard using fmx.

Each key is a TButton, inside a TGridLayout. Each TButton updates a TEdit with the corresponding number (from Text property).

 

When I run the application on Android 14, it works ok.

When I run this application on Android (8.1.0 Oreo), on a real device, the time from the touch to the response (updating the TEdit) is really slow.

 

If I place the buttons outside the TGridLayout, the performance get's a little better.

If I replace the TButtons to TRectangles with TText, the performance get's even better.

 

Is there any property or configuration that I can set to make the TButton version respond faster ?

 

Maybe the issue is related to the animation when the button is clicked, but I can't find a way to turn it off.

 

Below is an image of the app running.

 

 

This is the device i'm testing:

 

https://www.jarltech.com/sites/default/files/images/product/main/SUN_d2_mini_front_web.png

Edited 18 hours ago by Clayton A. Alves

[Dave Nottage 563]

5 hours ago, Clayton A. Alves said:

Is there any property or configuration that I can set to make the TButton version respond faster ?

It might help to indicate which version of Delphi. I have similar code that as far as I can remember worked OK on (real) devices with Android 8 or lower (using Delphi 12), however I no longer have access to them.

 

It might also help to create a reproducible test case, in case someone else has such a device. I could try it out on an emulator, though.

[Clayton A. Alves 0]

8 hours ago, Dave Nottage said:

It might help to indicate which version of Delphi.

I'm using Delphi 10.4.2 (Sydney).

I've attached the sample test project I'm using.

tbutton_touch_test.zip