getHtml() didn't work at an Android device with Android 7

[Linzh7]

• I have read the Get Started - Installation section
• I have read and done the Get Started - Setup Android section
• I have read and done the Get Started - Setup iOS section
• I have already searched for the same problem

Environment

Technology	Version
Flutter version	2.5.2
Plugin version	5.3.2
Android version	Android 7.1.2
iOS version	x
Xcode version	x

Device information:
didn't work:
MI 5C, Android 7.1.2, MIUI 11.0.3
OPPO Reno6 5G, Android 11, ColorOS v11.3
did work:
Oneplus 9 plus, Android 11, OxygenOs 11.2.9.9, etc.

Description

Expected behavior:
After launch the website, the button could return the HTML(by getHtml()). Then I am able to process with this data.

Current behavior:
print error messages which point to package:flutter_inappwebview/src/types.dart

from my point of view, it may relate with android version.

Steps to reproduce

1. create a InAppWebView with controller and set its URL
2. add a button or something, it will getHtml from the controller
3. while tap the button, the function will not work as we expect

Stacktrace/Logcat

E/chromium(15721): [ERROR:gl_context_virtual.cc(39)] Trying to make virtual context current without decoder.
W/ContentCatcher(15721): Failed to notify a WebView
D/mali_winsys(15721): EGLint new_window_surface(egl_winsys_display *, void *, EGLSurface, EGLConfig, egl_winsys_surface **, egl_color_buffer_format *, EGLBoolean) returns 0x3000
E/flutter (15721): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: type 'Null' is not a subtype of type 'bool'
E/flutter (15721): #0 RendererPriorityPolicy.fromMap (package:flutter_inappwebview/src/types.dart:4595:38)
E/flutter (15721): #1 AndroidInAppWebViewOptions.fromMap (package:flutter_inappwebview/src/in_app_webview/android/in_app_webview_options.dart:422:61)
E/flutter (15721): #2 InAppWebViewGroupOptions.fromMap (package:flutter_inappwebview/src/in_app_webview/in_app_webview_options.dart:72:38)
E/flutter (15721): #3 InAppWebViewController.getOptions (package:flutter_inappwebview/src/in_app_webview/in_app_webview_controller.dart:1555:39)
E/flutter (15721):
E/flutter (15721): #4 InAppWebViewController.getHtml (package:flutter_inappwebview/src/in_app_webview/in_app_webview_controller.dart:945:41)
E/flutter (15721):
E/flutter (15721): #5 _universityWebRouteState.build. (package:xxxx/xxxx/xxxx.dart:97:80)
E/flutter (15721):
E/flutter (15721):

[github-actions]

👋 @Linzh7

NOTE: This comment is auto-generated.

Are you sure you have already searched for the same problem?

Some people open new issues but they didn't search for something similar or for the same issue. Please, search for it using the GitHub issue search box or on the official inappwebview.dev website, or, also, using Google, StackOverflow, etc. before posting a new one. You may already find an answer to your problem!

If this is really a new issue, then thank you for raising it. I will investigate it and get back to you as soon as possible. Please, make sure you have given me as much context as possible! Also, if you didn't already, post a code example that can replicate this issue.

In the meantime, you can already search for some possible solutions online! Because this plugin uses native WebView, you can search online for the same issue adding android WebView [MY ERROR HERE] or ios WKWebView [MY ERROR HERE] keywords.

Following these steps can save you, me, and other people a lot of time, thanks!

[And96]

Simila problem here. GetHTML sometimes works and sometimes not.
In my case, I am on Android 11

[RodXander]

It also happened to me in Android 7.0, however, in Android 11 it worked correctly.
Using var html = await controller.evaluateJavascript(source: "window.document.getElementsByTagName('html')[0].outerHTML;"); worked on both though.

[lefo0755]

Maybe its the problem, lefo0755@5f96c33 work fine for me

[Linzh7]

Maybe its the problem, lefo0755@5f96c33 work fine for me

yeah, it does work 4 me 2.
I tried 2 modified the Null with a default value, but Idk why it didn’t work. XD
glad 2 know how 2 fix it, thx my friend : )