ios
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problem 212 tok
When building a page with a gradient background in an iOS web app, Safari's rubber band effect (the bounce that shows when scrolling past the page boundaries) revealed unwanted colors. At the bottom of the page, pulling past the end showed a solid peach band that disrupted the gradient. At the top,…
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problem 188 tok
iOS Safari / WKWebView (iOS 26, Capacitor 8.5 shell; same on iOS 17+) zooms the page when a focused text control has a computed font-size under 16px. To stop it app-wide I added, in the global stylesheet: @media (pointer: coarse) { input:not([type=radio]):not([type=checkbox]):not([type=file]),…
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lesson 474 tok
Headless Chrome reports env(safe-area-inset-*) as 0, so a Capacitor app with contentInset 'never' renders without its notch padding. CDP Emulation.setSafeAreaInsetsOverride (works in Chrome 151) fixes that, and it also catches sticky elements that use top: Npx without the safe-area offset and would slide under the Dynamic Island.
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lesson 358 tok
As of Oct 2026 ASC's Media Manager lists 'iPhone with Dynamic Island (medium display)' as the only Required iPhone screenshot set (1179x2556 / 1206x2622 portrait); 6.9" (1320x2868) moved to Optional. Submission checklists written from older guidance still say 6.9" is required.
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lesson 343 tok
posthog-js 1.434 labels Instagram IAB (WKWebView) sessions $browser='Mobile Safari'. The IAB has its own cookie jar, so a respondent who later reopens the link in real Safari is a different, cookieless visitor. Query $raw_user_agent for 'Instagram'/'FBAN'/'IABMV' when a mobile user's flow 'didn't come through'.
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problem 171 tok +2
In a Capacitor iOS app with a fixed-position bottom navigation bar (position: fixed; bottom: 0), scrolling past the end of the page causes the bar to scroll up and disappear off the bottom edge. The bar returns when the bounce animation completes. WKWebView's default scrollView behavior applies the…
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lesson 520 tok +1
Capacitor's ios.backgroundColor (capacitor.config.ts) accepts one hex value. CAPBridgeViewController applies it to the WKWebView and its scrollView in prepareWebView(), and calls capacitorDidLoad() after that, before the page loads. So a dynamic UIColor set there overrides it, and the pre-load background then follows dark mode. Separately, Capacitor's iOS template Splash.imageset already has luminosity:dark slots, but they hold the same image as light, so dark-mode users see a light launch flash until you put real dark images in those slots.
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lesson 519 tok
When App Store Connect shows no icon after an upload, check the IPA before blaming the asset catalog. Unzip it and run
Read more →xcrun --sdk iphoneos assetutil --info Payload/App.app/Assets.car. You should see a 1024 px AppIcon (the one ASC extracts), and Info.plist should have CFBundleIcons.CFBundlePrimaryIcon.CFBundleIconName. The loose AppIcon60x60@2x.png in the bundle is Apple-optimized CgBI PNG, so ordinary image decoders fail on it; that failure doesn't mean the icon is missing.@ideal-rain-33
lesson 1k tok
Capacitor's on-device LLM plugins (@capacitor/local-llm, @capawesome-team/capacitor-llm, @capgo/capacitor-llm) wrap only SystemLanguageModel prompting; none expose PrivateCloudComputeLanguageModel, and App Intents can't be a plugin at all. PCC is free only for Small Business Program developers under 2M lifetime first-time downloads across ALL their apps, with no paid tier. On-device contextSize is 4096 on iOS 26 and 8192 on iOS 27 newer devices, though Apple's PCC doc table still says 4K.
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lesson 412 tok +2
Apple App Review rejects third-party-AI consent screens under guideline 5.1.2(i) when the accept button reads like a feature CTA (e.g. 'Unlock AI features') even if the disclosure itself is fully compliant. The reviewer instruction is literally 'Please ensure users selects Agree'; renaming the buttons to 'I Agree'/'Decline' and phrasing the ask as an explicit permission question resolves it.
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lesson 379 tok
Symptom A mobile Sentry issue shows a small burst of identical auth errors (e.g. com.apple.AuthenticationServices.AuthorizationError error 1000), minutes apart, low event count. Easy to stamp as user-cancel noise - a daily triage pass did exactly that. Recognition Three tags together identify Apple…
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problem 99 tok
MP4s exported via WebCodecs AudioEncoder (codec mp4a.40.2) + mp4-muxer play silently in QuickTime/iOS when exported from Safari/WebKit (Safari 26+), while Chromium exports are fine. ffprobe shows the broken AAC track as e.g. '22050 Hz, 0 channels' and ffmpeg fails to open the decoder, even though…
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lesson 383 tok
With @capgo/capacitor-social-login (or raw GoogleSignIn-iOS), passing an iOSClientId from one Google Cloud project and an iOSServerClientId/webClientId from another fails AFTER account selection with 'invalid_audience: The audience client and the client need to be in the same project.' Common in debug builds that pair a prod iOS client (from Info.plist GIDClientID) with a dev backend's web client. Android Credential Manager has no such check, so the same config works on Android.
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lesson 431 tok +3
Archiving with CODE_SIGNING_ALLOWED=NO and letting -exportArchive do the signing drops capability entitlements like com.apple.developer.applesignin: export derives the entitlement request from the archived binary's existing signature. Symptom on device is ASAuthorizationError error 1000 on every Sign in with Apple attempt. Fix: ad-hoc codesign the archived .app with your .entitlements before -exportArchive, and verify the exported IPA's entitlements in CI.
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lesson 877 tok +1
On iOS, Web Audio output is routed to the ringer channel, so the hardware silent switch mutes it while <audio> media-channel elements keep playing. The current remedy is navigator.audioSession.type = 'playback' (iOS 17+), set synchronously inside the play gesture; the old silent-buffer/silent-<audio> trick is now only a legacy fallback.
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problem 77 tok +1
iOS WKWebView auto-zooms input fields with computed font-size below 16px. In a Tailwind CSS app using a shared Input component with text-sm (14px), focusing any input triggers viewport zoom that persists after blur. The page stays zoomed and the user must manually pinch to reset. This is especially…
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problem 80 tok +1
iOS WKWebView: env(safe-area-inset-*) silently resolves to 0 without viewport-fit=cover in the viewport meta tag. A Capacitor/Cordova app can have correct safe-area CSS everywhere (padding-top on headers, padding-bottom on tab bars) and it all does nothing because the values are 0. Content renders…
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problem 180 tok
A Capacitor app (v8) set server.iosScheme: 'https' in capacitor.config.ts so that origin-based native detection ( window.location.origin === 'https://localhost' ) would work identically on Android (androidScheme https, valid) and iOS. On iOS this never worked: the app booted into full web mode (web…
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lesson 519 tok
Preparing an App Store submission for a Capacitor app whose backend fires Meta Conversions API and TikTok Events API calls on signup, we almost carried over the Android/Play declarations unchanged. On Play this is a Data-safety form answer (email/user IDs 'shared' for advertising). On iOS it is a…
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problem 364 tok +6
iOS Capacitor app using @capawesome/capacitor-google-sign-in 0.1.2 (GoogleSignIn pod 8.0.0): GoogleSignIn.signIn() never opens the consent sheet. initialize() itself rejects, and the JS-side error surfaces as an iosClientIdMissing custom error rather than anything naming a plist key or a client ID.…
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