android

Set AndroidLinkTool to r8, keep trimming on, and add a ProguardConfiguration file. Why .NET 10 and .NET 11 RC 1 still ship un-obfuscated Java, how the new AndroidR8ObfuscationMode property changes that, and how to verify R8 actually ran.

Override OnBackButtonPressed on the root page and run .NET MAUI 10.0.101 or later. Why root pages stopped receiving back presses from 10.0.70 (Android 16) and 10.0.100 (every Android version), why .NET 11 RC 1 is still affected, why Shell.OnNavigating and BackButtonBehavior.Command do not help, and a MainActivity workaround for the broken versions.

Flutter web 3.41 to 3.44 reports a ~625x line-height override when an Android WebView's textZoom is not 100. Upgrade to 3.47, or clear the override in MaterialApp.builder.

The release APK shipped without libapp.so. Flutter 3.44.0 to 3.44.4 could drop it: upgrade to 3.44.5 or later and split the combined subprojects block.

Play Console tells you your ANR rate is over 0.47% and hands you a native stack full of libcoreclr.so frames. Here is how to get from that useless trace to the exact async void event handler that blocked the main thread, using a Looper printer, a SynchronizationContext wrapper that names the state machine, and dotnet-trace over dsrouter.

Google Play required target API 36 from 2026-08-31, with extensions running to 2026-11-01. Here is the full .NET MAUI path from net9.0-android to API 36: the target framework bump, the hardcoded uses-sdk that silently pins you to the old level, edge-to-edge with no opt-out, predictive back, and the large-screen orientation rules.

A step-by-step migration off Mono onto CoreCLR for .NET MAUI on Android: the API 24 floor, the Mono-only MSBuild properties that now break your build, why your APK grew, how to profile the startup regression with dotnet-dsrouter and dotnet-trace, and what a rollback actually looks like now that the Mono path is gone.

Firebase Auth restores the Android session from a private SharedPreferences file with no network call, so a release-only sign-out is never broken persistence. It is a different google-services.json, a rejected token refresh, App Check, or your own catch block.

The APK has no native library for the device's CPU. Since .NET 9 the default Android RuntimeIdentifiers are 64-bit only, so the fix is to set RuntimeIdentifiers explicitly. Covers ADB0020, XA0036, NETSDK1083, the ABI to RID mapping, the Play Console wording, and why the four-RID snippet everyone copies breaks on .NET 11.

The JEP 472 warning on JDK 24+ is harmless and prints once. Fix it by matching your JDK to a Gradle version that supports it, not by pasting flags into gradle.properties.