Android: weird issue when changing orientation

[felixkrautschuk]

Which platform(s) does your issue occur on?

• Android
• tested on Android 4, Android 7 and Android 10 (devices and emulators)

Please, provide the following version numbers that your issue occurs with:

• CLI: 6.4.1
• Cross-platform modules: 6.4.2
• Runtime(s): tns-android 6.4.1
• Plugin(s): nativescript-pager 12.0.0.alpha.8

Please, tell us how to recreate the issue in as much detail as possible.

Describe the steps to reproduce it.

When changing the orientation from portrait to landscape and then back to portrait, the user sees 95% of the next page.... just have a look at the GIF:

This issue does not occur if the user has selected the first page in the pager. But as soon as he goes forward to the second page, then you can see this side effect.

Is there any code involved?

NSPagerIssueOrientationAndroid.zip

It is also reproducable on the demo app of this repo.

[felixkrautschuk]

temporary workaround:

app.on(app.orientationChangedEvent, function(args) {
    setTimeout(function() {
        if(pager.selectedIndex > 0) {
            let temp = pager.selectedIndex;
            pager.scrollToIndexAnimated(temp-1, true);
            pager.scrollToIndexAnimated(temp, true);
         }
     }, 300);
});

but I hope there will be an official fix for this issue, because the workaround still has some optical side effects

[triniwiz]

Try forcing a layout e.g requestLayout

[felixkrautschuk]

@triniwiz I already tried pager.requestLayout(); and

pager.eachChild(function (view) {
    view.requestLayout();
});

but unfortunately that does not help