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Thread Scrolling Issues with Mobile Web Apps.
Thu, Oct 27 2022 9:34 PMPermanent Link

Steve Gill

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I have created a few of EWB apps for use from mobile devices.  However, I have had problems with scrolling on the iPhone, ie. I can't get the apps to scroll vertically like you normally would using a finger.

This happens with the iOS versions of these browsers: Safari, Chrome and Firefox.

I'm talking with Tim about this via email but I was wondering if anyone has experienced this.

= Steve
Thu, Oct 27 2022 9:39 PMPermanent Link

Steve Gill

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Just tried it with iOS versions of Opera and Brave. Same result.

The desktop versions of the apps work fine.

= Steve
Thu, Oct 27 2022 10:47 PMPermanent Link

Allen Hunt

Steve Gill wrote:

> I have created a few of EWB apps for use from mobile devices.  However, I have had problems with scrolling on the iPhone, ie. I can't get the apps to scroll vertically like you normally would using a finger.

> This happens with the iOS versions of these browsers: Safari, Chrome and Firefox.

> Just tried it with iOS versions of Opera and Brave. Same result.

> The desktop versions of the apps work fine.

Is it built using Cordova?  I'm not using Cordova but I've got an app that scrolls on a TForm.  I'm not having this problem  I just tested again and scrolling is working fine using iOS. Safari. Chrome, and Firefox.  I have a strange thing where the copy, cut, and paste menu seems to be popping when I press a TButton when leaving a TEdit.  I haven't been able to figure it out.  It goes away when you start scrolling.

Under the desktop this app will occasionally act as though the left mouse button is being held down after using the scrollbar to scroll.  It hangs and won't release the button even after pressing it multiple times.  I haven't been able to figure out either.  I tried setting a TTimer to set focus back to the form every millisecond but it still does it.

Best regards,
Allen

This same app
Thu, Oct 27 2022 11:46 PMPermanent Link

Steve Gill

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Hi Allen,

<< Is it built using Cordova? >>

No, they're just apps sized for mobile browsers.

= Steve
Fri, Oct 28 2022 1:18 AMPermanent Link

Allen Hunt

Steve Gill wrote:

> No, they're just apps sized for mobile browsers.

Hello!  I'm not having the issues but this is with EWB 3.02 Build 7.  It doesn't appear to be available for download.  I haven't tried Build 8.  Is that the one your using?

Best regards,
Allen
Fri, Oct 28 2022 5:00 PMPermanent Link

erickengelke

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Steve Gill wrote:

>I have created a few of EWB apps for use from mobile devices.  However, I have had problems with scrolling on the iPhone, ie. I can't get the apps to scroll vertically like you normally would using a finger.

This is a known problem with the Apple products -speicifically they hide the scrollbar.  

I've spent a lot of time on it but not found a solution.  Cursor down keystroke works, but that doesn't work for iPhones to iPads.  People play with the CSS, or use 3rd party scrolling libraries to get around it, I haven't had much luck.

As a last ditch effort, you can probably add manual scroll up scroll down buttons to your app that use the TScrollBar. scrollby() function.    Ugly, but possible.  

Erick
EWB Programming Books and Component Library
http://www.erickengelke.com
Fri, Oct 28 2022 5:02 PMPermanent Link

erickengelke

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erickengelke wrote:

>This is a known problem with the Apple products -speicifically they hide the scrollbar.  

Sorry, do a web search for "disappearing scrollbar Apple"

Erick
EWB Programming Books and Component Library
http://www.erickengelke.com
Fri, Oct 28 2022 6:22 PMPermanent Link

Steve Gill

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Hi Allen,

<< Hello!  I'm not having the issues but this is with EWB 3.02 Build 7.  It doesn't appear to be available for download.  I haven't tried Build 8.  Is that the one your using? >>

I'm having the problem with Build 7 and Build 8.

= Steve
Fri, Oct 28 2022 6:24 PMPermanent Link

Steve Gill

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Hi Eric,

<< This is a known problem with the Apple products -speicifically they hide the scrollbar.  

I've spent a lot of time on it but not found a solution.  Cursor down keystroke works, but that doesn't work for iPhones to iPads.  People play with the CSS, or use 3rd party scrolling libraries to get around it, I haven't had much luck.

As a last ditch effort, you can probably add manual scroll up scroll down buttons to your app that use the TScrollBar. scrollby() function.    Ugly, but possible.  >>

Ahh, right.  I wasn't aware of that.

Thanks.

= Steve
Fri, Oct 28 2022 6:24 PMPermanent Link

Steve Gill

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Hi Erick,

<< Sorry, do a web search for "disappearing scrollbar Apple" >>

Thanks.  I'll check it out.

= Steve
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