在iOS上，打开网页关闭后，其他页面会卡顿。

日志如下：

Main Thread Checker: UI API called on a background thread: -[UIView removeFromSuperview] PID: 3117, TID: 628092, Thread name: io.flutter.1.raster, Queue name: com.apple.root.default-qos.overcommit, QoS: 0 Backtrace: 4 Flutter 0x0000000100b855d0 _ZN7flutter30FlutterPlatformViewsController11SubmitFrameEP15GrDirectContextNSt3__110shared_ptrINS_10IOSContextEEENS3_10unique_ptrINS_12SurfaceFrameENS3_14default_deleteIS8_EEEE + 4932 5 Flutter 0x0000000100b9ea60 _ZN7flutter10IOSSurface11SubmitFrameEP15GrDirectContextNSt3__110unique_ptrINS_12SurfaceFrameENS3_14default_deleteIS5_EEEE + 160 6 Flutter 0x0000000100e750c4 _ZN7flutter10Rasterizer13DrawToSurfaceERNS_9LayerTreeE + 604 7 Flutter 0x0000000100e75c00 _ZNSt3__110__function6__funcIZN7flutter10Rasterizer4DrawEN3fml6RefPtrINS2_8PipelineINS2_9LayerTreeEEEEEE3$1NS_9allocatorISA_EEFvNS_10unique_ptrIS7_NS_14default_deleteIS7_EEEEEEclEOSG + 116 8 Flutter 0x0000000100e753c4 _ZN7flutter10Rasterizer4DrawEN3fml6RefPtrINS_8PipelineINS_9LayerTreeEEEEE + 408 9 Flutter 0x0000000100e7bc10 _ZNSt3__110__function6__funcIZN7flutter5Shell14OnAnimatorDrawEN3fml6RefPtrINS2_8PipelineINS2_9LayerTreeEEEEENS4_9TimePointEE4$_30NS_9allocatorISB_EEFvvEEclEv + 100 10 Flutter 0x0000000100ba9948 _ZN3fml15MessageLoopImpl10FlushTasksENS_9FlushTypeE + 1472 11 Flutter 0x0000000100bac074 ZN3fml17MessageLoopDarwin11OnTimerFireEP16__CFRunLoopTimerPS0 + 32 12 CoreFoundation 0x0000000196b98134 E2D6A76B-6879-31A3-8168-DF49F94E17CD + 692532 13 CoreFoundation 0x0000000196b97e50 E2D6A76B-6879-31A3-8168-DF49F94E17CD + 691792 14 CoreFoundation 0x0000000196b9752c E2D6A76B-6879-31A3-8168-DF49F94E17CD + 689452 15 CoreFoundation 0x0000000196b9253c E2D6A76B-6879-31A3-8168-DF49F94E17CD + 668988 16 CoreFoundation 0x0000000196b91ba8 CFRunLoopRunSpecific + 424 17 Flutter 0x0000000100babf50 _ZN3fml17MessageLoopDarwin3RunEv + 88 18 Flutter 0x0000000100bab12c _ZNSt3__114__thread_proxyINS_5tupleIJNS_10unique_ptrINS_15__thread_structENS_14default_deleteIS3_EEEEZN3fml6ThreadC1ERKNS_12basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEEE3$0EEEEEPvSJ + 196 19 libsystem_pthread.dylib 0x000000019692fd98 _pthread_start + 156 20 libsystem_pthread.dylib 0x000000019693374c thread_start + 8

 $ flutter doctor

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.9, on Mac OS X 10.15.4 19E287, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[✓] Xcode - develop for iOS and macOS (Xcode 11.1)
[✓] Android Studio (version 3.6)
[✓] IntelliJ IDEA Ultimate Edition (version 2019.3.4)
[✓] VS Code (version 1.42.0)
[✓] Connected device (2 available)

• No issues found!

E/InputMethodManager( 7734): b/117267690: Failed to get fallback IMM with expected displayId=14 actual IMM#displayId=0 view=com.hisaichi5518.native_webview.NativeWebView{33c78f VFEDHVC.. .F...... 0,0-1440,2432}
I/chromium( 7734): [INFO:CONSOLE(1)] "Uncaught (in promise) TypeError: fullscreen error", source: https://bobo.kkpp.space/DPlayer/DPlayer.min.js (1)

webView show as black screen with FLAG_SECURE in all device not support Chrome as Android system WebView Provider

in android 10 , and Huawei modern devices , can you supply any code to pass this issues

Sometimes the app crashes.

D/AndroidRuntime( 8163): Shutting down VM
E/AndroidRuntime( 8163): FATAL EXCEPTION: main
E/AndroidRuntime( 8163): Process: ..., PID: 8163
E/AndroidRuntime( 8163): java.lang.NullPointerException: Attempt to read from field 'android.view.WindowManager$LayoutParams android.view.ViewRootImpl.mWindowAttributes' on a null object reference
E/AndroidRuntime( 8163): 	at android.view.inputmethod.InputMethodManager.startInputInner(InputMethodManager.java:1626)
E/AndroidRuntime( 8163): 	at android.view.inputmethod.InputMethodManager.checkFocus(InputMethodManager.java:1865)
E/AndroidRuntime( 8163): 	at android.view.inputmethod.InputMethodManager.isActive(InputMethodManager.java:1184)
E/AndroidRuntime( 8163): 	at com.hisaichi5518.native_webview.InputAwareWebView$1.run(InputAwareWebView.java:204)
E/AndroidRuntime( 8163): 	at android.os.Handler.handleCallback(Handler.java:883)
E/AndroidRuntime( 8163): 	at android.os.Handler.dispatchMessage(Handler.java:100)
E/AndroidRuntime( 8163): 	at android.os.Looper.loop(Looper.java:214)
E/AndroidRuntime( 8163): 	at android.app.ActivityThread.main(ActivityThread.java:7356)
E/AndroidRuntime( 8163): 	at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 8163): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/AndroidRuntime( 8163): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

I haven't found a way to recreate it.

This PR is based on https://github.com/hisaichi5518/native_webview/pull/109, so will make this ready after merging it.

Commits:

• https://github.com/hisaichi5518/native_webview/commit/445a3aaa17709bd722d6b2a0dc34b0889de3d85e
• https://github.com/hisaichi5518/native_webview/pull/110/commits/c28571db593466a287fb17f4f18a52400d545207

This PR is to make this package compatible with Flutter 3.3.x.

No change was needed in iOS, but some were needed in Android for nullability updates in Flutter SDK.

This PR also improves Android integration test's stability.

Support file upload on Android.

Launch the picker intent when you tap the file selection button on the web page. Receives the result of the intent and calls a callback.

Running the integration test in CI is very unstable and reduces development speed. So, I will not run it in CI, but run it on my machine and then merge it.

Android

https://developer.android.com/reference/android/webkit/WebChromeClient#onConsoleMessage(android.webkit.ConsoleMessage)

iOS

none WKWebView should overwrite console.log.