Another question from my colleague: we use Flow inside ViewModel and convert to LiveData which Fragment observes. When we should set the… — Our team has had lots of trivial but funny discussions. This is another question that we didn’t understand well at the beginning of using Flow, we don’t know when we should assign this parameter and what we need to set. …

A question from my colleague: if we want to initialize a mutable list as the fragment’s variable, should we do it directly in the… — Recently, our team has had lots of trivial but funny discussions. They are little questions, but we still learn a lot and enjoy. I would like to share them here, not seriously. When we initialize a mutable list inside a fragment, we can do this like class SampleFragment : Fragment()…

Keep requestLegacyExternalStorage=true even though it will be ignored on Android 11 — About what most application developers see in the Google Play Console: We’ve detected that your app contains the requestLegacyExternalStorage flag in the manifest file of 1 or more of your app bundles or APKs. Developers with apps on devices running Android 11+ must use Scoped Storage to give users better…

There is a common memory-leak issue of ViewPager2, to prevent this we can use viewLifeCycleOwner when creating the FragmentStateAdapter — There is a common memory-leak issue of ViewPager2, for example, through a large or unknown number of fragments, use FragmentStateAdapter with ViewPager2, and then navigate forward to a new fragment, Leak Canary detects memory leaks. Most of the solutions from Stack Overflow would set the adapter to null when onDestroyView():

We need to support App Links for some domains, and support Direct Links for the other domains together in our app — (I knew it’s an odd case.) Our android app fully supports Android App Links, and it works perfectly. And then, the app is demanded to handle more domains, however, some domains‘ web servers cannot put the assetlinks.json files onto. Use ATS policy to redirect assertlinks.json? No, the assetlinks.json file must…

This asking permission to track is roughly equivalent to the opt-in consent standard used for GDPR — After iOS 14, iPadOS 14, and tvOS 14, the app will need to receive the user’s permission through the AppTrackingTransparency framework to track users or access the device’s advertising identifier. If we do not recompile our app to use the new framework, then IDFA is disabled. In response to IDFA’s…

Maintaining UI testing codes is a big challenge, we’ll introduce how we solve this problem by applying the PageObject Pattern. — Thanks my colleage, Kane Shih, to cooperate. This article and share the experience about PageObject on Android application. PageObject Pattern is a well-known design pattern in the Web application UI automation testing proposed by Martin Fowler. It efficiently models the UI elements as objects and allows developers to manipulate them…