Mobile Dev
Questions about iOS, Android development, SDKs, and mobile apps.
Learn to retrieve Android SDK version and API level programmatically using Build.VERSION.SDK_INT in Java and Kotlin. Includes runtime checks, compatibility table, and best practices for android sdk versions and android api levels.
Resolve duplicate class errors like org.hamcrest.BaseDescription in Android Gradle projects when adding json-simple. Learn excludes, resolutionStrategy force, and substitution for Gradle 8.3 and Android Studio Otter 2.
Achieve smooth progressive blur in React Native CLI: blend intensity from top/bottom edges to sharp center using MaskedView, BlurView, and LinearGradient. Code examples, libraries, and troubleshooting for no hard edges.
Fix SwiftUI TextField in sheets requiring multiple taps for keyboard due to onAppear state loading, unwanted text highlight. Use @FocusState, UIKit wrappers, pre-load state for instant iOS response.
Troubleshoot Unity Google Play Games leaderboards: verify leaderboard ID, publish Play Games config, match SHA1/OAuth, initialize PlayGamesPlatform, enable debug logs.
Fix QTextEdit overlap with Android keyboard in Qt: use android:windowSoftInputMode=adjustPan and QInputMethod::keyboardRectangle to keep widgets visible.
Discover why cat emojis look creepy on iPhone but cute on Android. Unicode standardizes code points, but Apple and Google designs differ in eyes, shading, and proportions for unique vibes in iPhone emoji and Android emoji.
Step-by-step guide to set up NTAG213 password protection using Android NFC NfcA. Configure PWD, PACK, AUTH0, ACCESS bytes, perform PWD_AUTH, and test writes with transceive examples and error handling.
StoreKit restore won't detect legacy App Store lifetime purchases. Validate receipts or use StoreKit 2/AppTransaction to preserve lifetime access securely.
Step-by-step guide to find, diagnose and fix libsc-native-lib.so 16KB page-size alignment for arm64-v8a. Tools, linker flags, packaging, CI checks and NDK r28+
Learn why Swift Package Manager can't set Other Metal Compiler Flags directly in Package.swift and how to enable -fmetal-enable-logging using MetalCompilerPlugin, debug.metallib, and alternatives for Metal shaders.
Diagnose and resolve 'Raster Jank Detected' in Flutter SDK 3.29.3 showModalBottomSheet with transparent backgrounds. Use Flutter DevTools for timeline, raster thread analysis, and optimizations like RepaintBoundary for smooth performance.
Why Siri ignores AppShortcuts after force-quitting your iOS app and how to fix it with supportedModes=.any, AppShortcutsProvider, and background execution for voice commands when app isn't running.
Used Chinese phones (Android 8+) safe to root without official bootloader unlocks: OnePlus, POCO F1, Snapdragon Redmi Note. Pre-purchase checks and root methods.
Why your iOS C function gets stripped in TestFlight builds causing dlsym NULL and crashes, but works in Xcode. Fix with attributes, build settings, linker flags, and dynamic frameworks.
Discover why Android apps can't directly detect uninstall or call APIs. Use server-side FCM silent pushes for reliable android app uninstall detect, with DeviceAdmin limitations, broadcasts, and best practices for server notifications.
Can a desktop license unlock mobile Pro features via device sync? Read Apple App Store & Google Play billing rules and compliant options like server accounts.
Understand TipKit's expected dismissal behavior in SwiftUI: tapping outside dismisses visually but doesn't mark as displayed. Learn permanent dismissal patterns with MaxDisplayCount, Rules, Events, and gestures for iOS 17+ apps.
iOS 26 .pageSheet freezes on Pro Max devices when UIDesignRequiresCompatibility=YES. Reproducer, Instruments/sysdiagnose debugging steps, root-cause hypotheses, and safe workarounds.
Automate Bluetooth tests on Android for React Native apps using Detox for UI flows. Combine with Espresso or peripheral simulators to verify BLE/GATT behavior.