When the app targets Android 12 (API level 31) or higher, the official document strongly recommends that If your app doesn’t use Bluetooth scan results to derive physical location, you can make a strong assertion that your app never uses the Bluetooth permissions to derive physical location <uses-permission android:name=”android.permission.BLUETOOTH_SCAN” android:usesPermissionFlags=”neverForLocation”/>

Android is a system that allows developers to write code for the virtual machine without knowing the actual machine code. The compiler can detect many issues during compiling and optimize the code for a polished final product. However, code changes can sometimes cause problems, resulting in unexpected behavior when the app runs. In this post, we’ll explore compiling an Android app and reverse engineering to understand why some code crashes at runtime.

The Apple M1 is an ARM-based chip. Because M1’s architecture is different from the previous Intel x86 one, Resetta 2 permits many applications compiled for x86–64 processors to be translated for execution on Apple silicon. — TL;DR I suggest using Rosetta to launch Xcode. Right-click on Xcode in your applications folder and click “Get Info”. Check the “Open using Rosetta”. With MacBook Pro with M1, Xcode runs the iOS projects but gets the following error:

This solution was found by my colledges, Ray and Cloud. Thanks for the investigation. TL;DR That WebView lost its ability to popup the virtual keyboard after initializing this CustomWebView by using the @JvmOverloads annotation. Our team keeps going to refactor our Java code to Kotlin. We found our custom WebView can’t…

Another question from my colleague: we use Flow inside ViewModel and convert to LiveData which Fragment observes. When we should set the context parameter when using asLiveData()? — 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 declaration or onCreate method? And what’s the difference? — 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

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, 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(): …

One Verification Fails, All App Links Fail — (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…