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Tag: android

38 posts · Page 1 of 4

2026-10-10 flutter dart flavors

What Is a Flutter Flavor, and How Is It Different from a Build Mode?

A build mode (debug, profile, release) decides how Flutter compiles your Dart code. A flavor (dev, staging, prod) is a native build variant you define in Gradle and Xcode that decides which app you ship. They are independent axes: 2 flavors times 3 modes is 6 builds. Verified on Flutter 3.44.8 with AGP 9.0.1, source checked against 3.47.7.

2026-10-07 errors flutter android

Fix: Bad state: No suitable NDK found for target architecture arm64 in a Flutter build

The android_libcpp_shared build hook (0.2.0 and older) cannot find your NDK, or your minSdk is above the NDK's newest API. Upgrade to 0.2.1+, or install an NDK that covers your minSdk.

2026-10-06 errors flutter android

Fix: ClassNotFoundException for MainActivity when a Flutter Android app launches

The manifest's .MainActivity resolves against the Gradle namespace, and no class with that name is in the APK. Make namespace, the Kotlin package line, and the manifest agree.

2026-10-05 errors flutter android

Fix: Timeout waiting to lock journal cache in a Flutter Android build

Another Gradle process holds ~/.gradle/caches/journal-1 and cannot hand it over. Find the Owner PID, kill that daemon, and stop deleting .lock files: that only moves the error.

2026-10-05 flutter dart admob

How to reserve space for an adaptive AdMob banner in Flutter to avoid layout shift

The official google_mobile_ads sample renders nothing until onAdLoaded, so your content jumps by 150 dp seconds after the screen appears. Ask for the anchored adaptive size first, reserve it with a SizedBox, persist the height across launches, and only then load the ad. Measured on Flutter 3.44.8 with google_mobile_ads 9.1.0.

2026-09-29 errors dotnet dotnet-10

Fix: Android status bar icons become unreadable after enabling UseMaterial3 in .NET MAUI 10

MAUI 10.0.100 picks status bar icon colors from colorPrimary, which is the opposite brightness of the Material 3 surface, so you get white on white or black on black. Update Microsoft.Maui.Controls to 10.0.101 or later, or reset AppearanceLightStatusBars in MainActivity.

2026-09-27 errors dotnet dotnet-10

Fix: MediaPicker.CapturePhotoAsync returns a PNG instead of a JPEG in .NET MAUI 10

On iOS, MAUI 10 re-encodes camera photos as PNG whenever CompressionQuality is 90 or higher and no MaximumWidth/Height is set, which includes the default. Set CompressionQuality to 89 or lower, or add a MaximumWidth on iOS only.

2026-09-26 errors flutter webview

Fix: YouTube embed shows "Video unavailable" (Error 152 / 153) in Flutter with youtube_player_iframe

Error 153 means YouTube got no Referer; 152 means the page claims to be youtube.com. Upgrade youtube_player_iframe to 6.0.2 and set origin to https://<your app id>, or use youtube-nocookie on 5.x.

2026-09-25 errors flutter android

Fix: e: Daemon compilation failed: null in a Flutter Android Gradle build

On Windows, Kotlin incremental compilation fails when the Flutter project and the pub cache sit on different drives. Move PUB_CACHE to the project's drive or turn off IC for pub-cache plugins.

2026-09-22 flutter dart webview

How to block a Flutter WebView from navigating to external URLs with NavigationDelegate

Keep a Flutter WebView on your own domain with webview_flutter 4.14.1: parse the URL, compare Uri.host instead of startsWith, hand mailto: and tel: to url_launcher, and know what Android and iOS actually send to onNavigationRequest.