[Camera] Can not use the camera plugin with Android API level 30

[Max-Might]

The camera plugin can not be used with Android API level 30 because it uses a deprecated method and warnings are treated as errors.

Steps to Reproduce

1. Set compile and target API versions in your build.gradle file like to API level 30:

compileSdkVersion = 30
targetSdkVersion = 30

Logs

The build fails with this error:

/home/user/.pub-cache/hosted/pub.dartlang.org/camera-0.5.8+11/android/src/main/java/io/flutter/plugins/camera/Camera.java:333: warning: [deprecation] createCaptureSession(List<Surface>,StateCallback,Handler) in CameraDevice has been deprecated
    cameraDevice.createCaptureSession(surfaceList, callback, null);     
                ^                                                       
error: warnings found and -Werror specified                             
1 error                                                                 
1 warning

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 1.22.3, on Linux, locale en_US.UTF-8)
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
[!] Android Studio
    ✗ Flutter plugin not installed; this adds Flutter specific functionality.
    ✗ Dart plugin not installed; this adds Dart specific functionality.
    ✗ android-studio-dir = ~/Development/android-studio/
    ✗ Android Studio not found at ~/Development/android-studio/
[✓] Connected device (1 available)

! Doctor found issues in 1 category.

[darshankawar]

@Max-Might
I tried the official camera plugin example on latest stable version (1.22.3), changed compilesdkversion and targetsdkversion to 30 and ran it on Android 11 (API 30) (emulator)and was able to compile and run the app.

Since I don't have a physical device targeting api 30, I am not sure if the issue you are facing is only on physical device. Can you check if on emulator too you get same error ?

[Max-Might]

@darshankawar This is strange.
The error happens because this method signature is marked as deprecated in api level 30:

CameraDevice.createCaptureSession(List<Surface> outputs, 
                CameraCaptureSession.StateCallback callback, 
                Handler handler);

And in the build.gradle file it is configured to treat warnings as errors:

def args = ["-Xlint:deprecation","-Xlint:unchecked","-Werror"]

[darshankawar]

@Max-Might
I am not facing the issue. Updated compilesdkversion and targetsdkversion to 30 and this time used this example which compiled and ran properly without any issues.

Can you try running flutter pub cache repair or flutter clean and then flutter run ?

[kasgaormeo]

I had encountered the same issue as @Max-Might

flutter pub cache repair -> flutter clean -> flutter run not working.

Instead, I directly declared the Camera.java file in the camera package.

Just did pull request

[DasTobbel]

Can confirm that issue. Happens to me as soon as the 'compileSdkVersion 30' is used.
Also the issue is not resolved with the suggestion of @darshankawar.
After flutter pub cache repair -> flutter clean -> flutter run
build exits with:

[SomeDirectoryName]/snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/camera-0.5.8+11/android/src/main/java/io/flutter/plugins/camera/Camera.java:333: warning: [deprecation] createCaptureSession(List<Surface>,StateCallback,Handler) in CameraDevice has been deprecated
    cameraDevice.createCaptureSession(surfaceList, callback, null);
                ^
error: warnings found and -Werror specified
1 error
1 warning

running on:
[✓] Flutter (Channel beta, 1.23.0-18.1.pre, on Linux, locale en_US.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
[✓] Chrome - develop for the web
[✓] Android Studio
[✓] Connected device (4 available)

[AmbujaAK]

i too got same issue. any solution ??

[github-actions]

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