Reliably getting screenSize configChanges in popup mode on tablet

Mobile
1

I’m working on an activity containing a WebView, which means re-creating that activity is a fairly expensive operation (and causes user annoyance). The app is targeted at tablet users so it’s not uncommon for them to view it in a popup window in One UI. Currently, when the user resizes the popup, the activity sometimes adjusts (with onConfigurationChanged) but sometimes gets destroyed and recreated. There appear to be certain width/height breakpoints built in to One UI that trigger the activity to be re-created (without warning) no matter what the AndroidManifest says.

My Activity manifest has the following fields on it:

android:configChanges="orientation|screenSize|keyboardHidden|smallestScreenSize|uiMode"
android:resizeableActivity="true"

I also added this Application metadata, just to try everything:

<meta-data android:name="android.supports_size_changes" android:value="true" />

My tablet is a Galaxy S5e with One UI 3.1 on Android 11.

Ideally I’d like the activity to never get re-created when resizing (everything is fully responsive). If not that, I’d at least like a warning before the activity gets destroyed so I can persist the WebView instance in memory.

I haven’t been able to find any documentation about config changes or lifecycle events relating to One UI popups. Does anybody have pointers?

2

Hi, first of all, you cannot avoid destroying activity during the transition.

However, you can handle that and show a warning. You can check the below resources to get more information.

Thank you

3

Thanks for the reply! With my current code I’m not even able to handle it because the activity gets destroyed before onConfigurationChanged is called. Is there some other way I can do that?