feat(ios/macos): Add handler for web content process termination #14325
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Package Changes Through 2954c83There are 11 changes which include @tauri-apps/api with minor, tauri-cli with minor, tauri-utils with minor, tauri-runtime-wry with minor, tauri-runtime with minor, tauri with minor, tauri-bundler with minor, @tauri-apps/cli with minor, tauri-build with minor, tauri-codegen with patch, tauri-macros with patch Planned Package VersionsThe following package releases are the planned based on the context of changes in this pull request.
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nklact
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Nov 10, 2025
This commit fixes the critical issue where the app shows a blank screen when reopened after being inactive on iPhone for extended periods. **Problem:** - iOS terminates the WKWebView's WebContent process when app is backgrounded - JavaScript-based detection cannot work because the JS engine is part of the terminated process - Users see about:blank and must force-close the app **Solution:** 1. Patched wry to dev branch with WebView process termination handler (wry#1624) 2. Added native iOS health monitoring in Rust that runs in main app process 3. Monitors WebView responsiveness every 2 seconds via JavaScript eval 4. Automatically reloads page when WebView becomes unresponsive 5. Removed ineffective JavaScript-only recovery code from App.jsx **Technical Details:** - Uses Cargo patch to pull wry from GitHub dev branch - Native monitoring survives WebContent process termination - Spawns background thread for continuous health checks - See IOS_WEBVIEW_FIX.md for full documentation **References:** - Upstream fix: tauri-apps/wry#1624 - Related PR: tauri-apps/tauri#14325 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <[email protected]>
nklact
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Nov 10, 2025
…tion This commit replaces the polling-based workaround with a proper native implementation using Apple's official WKNavigationDelegate protocol. **What Changed:** 1. Implemented native WKNavigationDelegate in webview_helper.rs using objc2 2. Added ProcessTerminationDelegate class that implements webViewWebContentProcessDidTerminate 3. Removed inefficient polling code that checked WebView health every 2 seconds 4. Removed unused imports (WebviewWindowExt, sel) 5. Updated documentation to reflect proper implementation **Technical Implementation:** - Forward-declared WKWebView and WKNavigationDelegate using objc2 extern declarations - Created custom Objective-C class at runtime using define_class! macro - Set navigation delegate directly on WKWebView instance - Stored delegate in thread-local storage to keep it alive - Automatically reloads page when iOS terminates WebContent process **Benefits:** ✅ Uses Apple's official delegate method (proper standard) ✅ No polling - called directly by WebKit framework ✅ Zero performance impact when running normally ✅ No battery drain from background thread ✅ Clean, maintainable code following existing patterns ✅ Follows same objc2 pattern as keyboard scroll prevention **References:** - Apple WKNavigationDelegate: https://developer.apple.com/documentation/webkit/wknavigationdelegate - wry PR #1624: tauri-apps/wry#1624 - Tauri PR #14325: tauri-apps/tauri#14325 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <[email protected]>
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This PR depends on tauri-apps/wry#1624