[CameraX] App crashes api < 21

• Android version 4.4.4, API 19
• dependencies: androidx.camera:camera-core:1.0.0-alpha06 androidx.camera:camera-camera2:1.0.0-alpha06

Problem I’m trying to use this library only for API > 21, but i also can’t run my application for API < 21 . I want to use this library like this:

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            useOldCamera();
        } else {
            useCameraX();
        }

When i run my application, i get crash with this exception: E/UncaughtException: java.lang.NoClassDefFoundError: android.util.Size

I’m trying to use this method, but it’s not help: stackoverflow

[peterdk]

@owahltinez Here another vote, I want to use CameraX where possible, but write the code for legacy Camera myself, with a conditional SDK_INT check. Now just adding the implementations makes the app crash. I need to support 4.1+, so I really don’t understand why it cannot be used conditionally.

implementation 'androidx.camera:camera-core:1.0.0-alpha06'
implementation 'androidx.camera:camera-camera2:1.0.0-alpha06'

 if (Build.VERSION.SDK_INT >= 21)
        {
            cameraApi = CameraXApi(view.texture_view)
        }else
        {
            cameraApi = Camera1Api(view.texture_view)
        }

E/AndroidRuntime: FATAL EXCEPTION: main
    java.lang.VerifyError: androidx/camera/camera2/impl/Camera2CameraFactory
        at androidx.camera.camera2.Camera2AppConfig.create(Camera2AppConfig.java:55)
        at androidx.camera.camera2.impl.Camera2Initializer.onCreate(Camera2Initializer.java:45)
        at android.content.ContentProvider.attachInfo(ContentProvider.java:1058)
        at android.app.ActivityThread.installProvider(ActivityThread.java:4560)
        at android.app.ActivityThread.installContentProviders(ActivityThread.java:4190)
        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4132)
        at android.app.ActivityThread.access$1300(ActivityThread.java:130)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1255)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4745)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
        at dalvik.system.NativeStart.main(Native Method)

[roffel]

@owahltinez But before I could write an if statement stating if < api 21 use the deprecated camera so I could still build for Android 4.x. That is not possible anymore.