integration_test screenshot Android - FlutterFragmentActivity - PlatformException(Could not copy the pixels, FlutterView is null) #89683

hampsterx · 2021-09-08T20:51:43Z

Steps to Reproduce

flutter create test
Change MainActivity to use FlutterFragmentActivity

class MainActivity: FlutterFragmentActivity() {

    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }
}

Add integration_test, test_driver as per https://github.com/flutter/flutter/tree/master/packages/integration_test
Add screenshot steps..

 await binding.convertFlutterSurfaceToImage();

    // Trigger a frame.
    await tester.pumpAndSettle();
    await binding.takeScreenshot('screenshot-1');

 flutter drive --driver=test_driver/integration_test.dart --target=integration_test/home_test.dart

Expected results:

Takes screenshot, same as when using FlutterActivity

Actual results:

Failure in method: screenshot
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞═════════════════
The following PlatformException was thrown running a test:
PlatformException(Could not copy the pixels, FlutterView is null,
null, null)

When the exception was thrown, this was the stack:
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:18)
<asynchronous suspension>
#2      IOCallbackManager.takeScreenshot (package:integration_test/_callback_io.dart:91:33)
<asynchronous suspension>
#3      IntegrationTestWidgetsFlutterBinding.takeScreenshot (package:integration_test/integration_test.dart:175:39)
<asynchronous suspension>
#4      main.<anonymous closure> (file:///home/tim/AndroidStudioProjects/untitled/integration_test/home_test.dart:40:5)
<asynchronous suspension>
#5      testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:176:15)
<asynchronous suspension>
#6      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:817:5)
<asynchronous suspension>

flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.5.0, on KDE neon User Edition 5.22 5.8.0-63-generic, locale en_NZ.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] Android Studio
[✓] Connected device (3 available)

• No issues found!

The text was updated successfully, but these errors were encountered:

darshankawar · 2021-09-09T08:00:28Z

@hampsterx
Thanks for the report. Can you provide the entire MainActivity.kt ? I tried using FlutterFragmentActivity() as you mentioned, but it's giving me bunch of compile errors. With FlutterActivity(), it works properly though.

Also, please check this similar /related issue for your reference: #83856

hampsterx · 2021-09-09T23:35:25Z


import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterFragmentActivity
import io.flutter.embedding.android.FlutterActivity
import io.flutter.embedding.engine.FlutterEngine
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity: FlutterFragmentActivity() {

    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);
    }


}

My project is using local_auth for biometrics which requires the FlutterFragmentActivity hence why I hit this issue.

cheers~

darshankawar · 2021-09-10T06:37:57Z

Thank for the file. I verified this on latest master and stable and see the same behavior. Below exception is thrown:

console error log



D:\FlutterApps\flutter_screenshot_integration_test-main>flutter drive --driver=test_driver/integration_test.dart --target=integration_test/screenshot_test.dart
Could not load custom device from config index 0: Expected enabled to be a boolean.
Running "flutter pub get" in flutter_screenshot_integration_test-main...        707ms
Running Gradle task 'assembleDebug'...                             89.5s
√  Built build\app\outputs\flutter-apk\app-debug.apk.
Installing build\app\outputs\flutter-apk\app.apk...                12.4s
VMServiceFlutterDriver: Connecting to Flutter application at http://127.0.0.1:53233/rWSv5B6ltNs=/
VMServiceFlutterDriver: Isolate found with number: 1182669862824263
VMServiceFlutterDriver: Isolate is paused at start.
VMServiceFlutterDriver: Attempting to resume isolate
I/flutter (25803): 00:00 +0: screenshot
VMServiceFlutterDriver: Connected to Flutter application.
I/flutter (25803): ══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞════════════════════════════════════════════════════
I/flutter (25803): The following PlatformException was thrown running a test:
I/flutter (25803): PlatformException(Could not copy the pixels, FlutterView is null, null, null)
I/flutter (25803):
I/flutter (25803): When the exception was thrown, this was the stack:
I/flutter (25803): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
I/flutter (25803): #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:167:18)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803): #2      IOCallbackManager.takeScreenshot (package:integration_test/_callback_io.dart:96:33)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803): #3      IntegrationTestWidgetsFlutterBinding.takeScreenshot (package:integration_test/integration_test.dart:175:39)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803): #4      main.<anonymous closure> (file:///D:/FlutterApps/flutter_screenshot_integration_test-main/integration_test/screenshot_test.dart:35:5)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803): #5      testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:176:15)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803): #6      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:817:5)
I/flutter (25803): <asynchronous suspension>
I/flutter (25803):
I/flutter (25803): The test description was:
I/flutter (25803):   screenshot
I/flutter (25803): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (25803): 00:01 +0: screenshot [E]
I/flutter (25803):   Test failed. See exception logs above.
I/flutter (25803):   The test description was: screenshot
I/flutter (25803):
I/flutter (25803): Consider enabling the flag chain-stack-traces to receive more detailed exceptions.
I/flutter (25803): For example, 'dart test --chain-stack-traces'.
I/flutter (25803): 00:01 +0 -1: (tearDownAll)
I/flutter (25803): 00:01 +1 -1: Some tests failed.
Failure Details:
Failure in method: screenshot
══╡ EXCEPTION CAUGHT BY FLUTTER TEST FRAMEWORK ╞═════════════════
The following PlatformException was thrown running a test:
PlatformException(Could not copy the pixels, FlutterView is null,
null, null)

When the exception was thrown, this was the stack:
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:167:18)
<asynchronous suspension>
#2      IOCallbackManager.takeScreenshot (package:integration_test/_callback_io.dart:96:33)
<asynchronous suspension>
#3      IntegrationTestWidgetsFlutterBinding.takeScreenshot (package:integration_test/integration_test.dart:175:39)
<asynchronous suspension>
#4      main.<anonymous closure> (file:///D:/FlutterApps/flutter_screenshot_integration_test-main/integration_test/screenshot_test.dart:35:5)
<asynchronous suspension>
#5      testWidgets.<anonymous closure>.<anonymous closure> (package:flutter_test/src/widget_tester.dart:176:15)
<asynchronous suspension>
#6      TestWidgetsFlutterBinding._runTestBody (package:flutter_test/src/binding.dart:817:5)
<asynchronous suspension>

The test description was:
  screenshot
═════════════════════════════════════════════════════════════════

end of failure 1




D:\FlutterApps\flutter_screenshot_integration_test-main>

flutter doctor -v

[√] Flutter (Channel master, 2.6.0-1.0.pre.237, on Microsoft Windows [Version 10.0.19042.1165], locale en-US)
    • Flutter version 2.6.0-1.0.pre.237 at D:\FlutterSDK\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision a54b10254a (2 hours ago), 2021-09-10 07:22:02 +0300
    • Engine revision 57bc7414b8
    • Dart version 2.15.0 (build 2.15.0-92.0.dev)

[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at C:\Users\Win\AppData\Local\Android\sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[!] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.2)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.11.31624.102
    X The current Visual Studio installation is incomplete. Please reinstall Visual Studio.

[√] Android Studio (version 2020.3)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[√] VS Code (version 1.60.0)
    • VS Code at C:\Users\Win\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension can be installed from:
       https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[√] Connected device (4 available)
    • SM A260G (mobile) • 5200763ebcfa861f • android-arm    • Android 8.1.0 (API 27)
    • Windows (desktop) • windows          • windows-x64    • Microsoft Windows [Version 10.0.19042.1165]
    • Chrome (web)      • chrome           • web-javascript • Google Chrome 93.0.4577.63
    • Edge (web)        • edge             • web-javascript • Microsoft Edge 93.0.961.38

! Doctor found issues in 1 category.

[√] Flutter (Channel stable, 2.5.0, on Microsoft Windows [Version 10.0.19042.1165], locale en-US)
    • Flutter version 2.2.3 at D:\FlutterSDK\flutter
    • Framework revision f4abaa0735 (31 hours ago), 2021-09-07 12:46:11 -0700
    • Engine revision f0826da7ef
    • Dart version 2.14.0

[√] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at C:\Users\Win\AppData\Local\Android\sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[X] Visual Studio - develop for Windows
    X Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components

[√] Android Studio
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • android-studio-dir = C:\Program Files\Android\Android Studio
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)

[√] Connected device (5 available)
    • SM A260G (mobile) • 5200763ebcfa861f • android-arm    • Android 8.1.0 (API 27)
    • SM G975F (mobile) • RZ8M802WY0X      • android-arm64  • Android 11 (API 30)
    • Windows (desktop) • windows          • windows-x64    • Microsoft Windows [Version 10.0.19042.1165]
    • Chrome (web)      • chrome           • web-javascript • Google Chrome 93.0.4577.63
    • Edge (web)        • edge             • web-javascript • Microsoft Edge 92.0.902.84

! Doctor found issues in 1 category.

C:\Users\Win>

BouweCeunen · 2021-12-05T23:41:14Z

Is there already a solution for this? Also hitting the exact same issue.

hampsterx · 2021-12-06T00:33:20Z

@jmagman @blasten @nturgut

any thoughts?
(I see a few prior PR's in this area from ya'll)

jmagman · 2021-12-06T17:46:15Z

@blasten worked on this.

Kiruel · 2021-12-21T14:13:25Z

Same problem on 2.8.1

kalebhermes · 2022-01-03T16:14:50Z

Also looking for a solution on this issue :(

hfierro · 2022-03-23T21:04:40Z

¿Any updates on this? I'm using flutter 2.10.3 and still having the same error. I'm also using FlutterFragmentActivity

sebastianbuechler · 2022-08-15T13:00:25Z

Still an issue in flutter 3.0.5. @darshankawar maybe add the tag for flutter 3.0?

matthew-carroll · 2022-09-21T21:30:48Z

@jmagman - Am I correct in understanding that this bug prevents all screenshot captures from Android apps through the relevant Flutter APIs?

matthew-carroll · 2022-09-21T21:34:13Z

I suppose I should also tag @GaryQian with that question, too ^

jmagman · 2022-09-21T22:06:49Z

I don't work on this 🙂
cc @camsim99

francois-robert · 2023-06-14T15:18:21Z

Still an issue in flutter 3.10.0, is there a workaround available ?

dkobia · 2023-06-16T14:53:43Z

Here's what seems to work for me so far:

Switch from the deprecated FlutterFragmentActivity to FlutterActivity in MainActivity.kt
Use a try/catch with surface->image:

if (Platform.isAndroid) {
  try {
    await binding.convertFlutterSurfaceToImage();
  } catch (e) {
    // Already converted
  }
}

await tester.pumpAndSettle();
await binding.takeScreenshot(screenshotName);

hampsterx · 2023-06-17T22:38:37Z

Switch from the deprecated FlutterFragmentActivity

This is still the recommended way for some packages, eg local_auth and hence why this ticket was created.

Activity Changes
Note that local_auth requires the use of a FragmentActivity instead of an Activity. To update your application:
If you are using FlutterActivity directly, change it to FlutterFragmentActivity in your AndroidManifest.xml.

#43921

Seems semi related maybe..

flutter-triage-bot · 2023-07-13T12:39:30Z

This issue is marked P1 but has had no recent status updates.

The P1 label indicates high-priority issues that are at the top of the work list. This is the highest priority level a bug can have if it isn't affecting a top-tier customer or breaking the build. Bugs marked P1 are generally actively being worked on unless the assignee is dealing with a P0 bug (or another P1 bug). Issues at this level should be resolved in a matter of months and should have monthly updates on GitHub.

Please consider where this bug really falls in our current priorities, and label it or assign it accordingly. This allows people to have a clearer picture of what work is actually planned. Thanks!

…ctivity`s (#132406) Fixes #89683. The changes to `getFlutterView` in `FlutterDeviceScreenshot` are the fix that was required, everything else was done to get tests running (such as re-generating some lockfiles and modifying the android manifest). The code was all currently not unit tested, and there were no other easy examples to base these java unit tests off in flutter/flutter, so let me know if this approach to testing is wrong.

github-actions · 2023-09-25T06:00:56Z

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

darshankawar added the in triage Presently being triaged by the triage team label Sep 9, 2021

darshankawar added the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Sep 9, 2021

github-actions bot removed the waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds label Sep 9, 2021

ductranit mentioned this issue Dec 2, 2021

Can't read file in integration test android #94197

Open

GaryQian added the P1 High-priority issues at the top of the work list label Aug 16, 2022

flutter-triage-bot bot added team-android Owned by Android platform team triaged-android Triaged by Android platform team labels Jul 8, 2023

flutter-triage-bot bot removed the triaged-android Triaged by Android platform team label Jul 13, 2023

gmackall mentioned this issue Aug 11, 2023

[integration_test] Allow capture of screenshots for FlutterFragmentActivitys #132406

Merged

8 tasks

camsim99 assigned gmackall Aug 17, 2023

auto-submit bot closed this as completed in #132406 Sep 7, 2023

darshankawar added the r: fixed Issue is closed as already fixed in a newer version label Sep 11, 2023

github-actions bot locked as resolved and limited conversation to collaborators Sep 25, 2023

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integration_test screenshot Android - FlutterFragmentActivity - PlatformException(Could not copy the pixels, FlutterView is null) #89683

integration_test screenshot Android - FlutterFragmentActivity - PlatformException(Could not copy the pixels, FlutterView is null) #89683

hampsterx commented Sep 8, 2021 •

edited

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darshankawar commented Sep 9, 2021 •

edited

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hampsterx commented Sep 9, 2021

darshankawar commented Sep 10, 2021

BouweCeunen commented Dec 5, 2021

hampsterx commented Dec 6, 2021

jmagman commented Dec 6, 2021

Kiruel commented Dec 21, 2021

kalebhermes commented Jan 3, 2022

hfierro commented Mar 23, 2022

sebastianbuechler commented Aug 15, 2022

matthew-carroll commented Sep 21, 2022

matthew-carroll commented Sep 21, 2022

jmagman commented Sep 21, 2022

francois-robert commented Jun 14, 2023

dkobia commented Jun 16, 2023

hampsterx commented Jun 17, 2023

flutter-triage-bot bot commented Jul 13, 2023

github-actions bot commented Sep 25, 2023

integration_test screenshot Android - FlutterFragmentActivity - PlatformException(Could not copy the pixels, FlutterView is null) #89683

integration_test screenshot Android - FlutterFragmentActivity - PlatformException(Could not copy the pixels, FlutterView is null) #89683

Comments

hampsterx commented Sep 8, 2021 • edited Loading

Steps to Reproduce

darshankawar commented Sep 9, 2021 • edited Loading

hampsterx commented Sep 9, 2021

darshankawar commented Sep 10, 2021

BouweCeunen commented Dec 5, 2021

hampsterx commented Dec 6, 2021

jmagman commented Dec 6, 2021

Kiruel commented Dec 21, 2021

kalebhermes commented Jan 3, 2022

hfierro commented Mar 23, 2022

sebastianbuechler commented Aug 15, 2022

matthew-carroll commented Sep 21, 2022

matthew-carroll commented Sep 21, 2022

jmagman commented Sep 21, 2022

francois-robert commented Jun 14, 2023

dkobia commented Jun 16, 2023

hampsterx commented Jun 17, 2023

flutter-triage-bot bot commented Jul 13, 2023

github-actions bot commented Sep 25, 2023

hampsterx commented Sep 8, 2021 •

edited

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darshankawar commented Sep 9, 2021 •

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