How to instantiate CameraControl on Android CameraX (1.0.0-alpha07)

Question

When using camerax_version = "1.0.0-alpha06" I could instantiale the camera controller using :

CameraControl cameraControl = CameraX.getCameraControl(CameraX.LensFacing.BACK);

But with camerax_version = "1.0.0-alpha07", the function CameraX.getCameraControl is not any more recognized.

How can I instantiate CameraControl ?

Answer 1

Version 1.0.0-alpha07 changed the way CameraX is initialized quite a lot. In order to obtain a CameraControl object, you have to get a Camera object first. A Camera is returned from a ProcessCameraProvider.bindToLifecycle() method. Basically what you need to do is:

(If you have already configured your project with the new API, just skip to the last point)

1. Implement CameraXConfig.Provider in your Application class and provide the default Camera2Config value:

class MyApp : Application(), CameraXConfig.Provider {
    override fun getCameraXConfig(): CameraXConfig = Camera2Config.defaultConfig(this)
}

2. Obtain an instance of ProcessCameraProvider:

val cameraProviderFuture = ProcessCameraProvider.getInstance(context)
cameraProviderFuture.addListener(Runnable {
    cameraProvider = cameraProviderFuture.get()
    ...
}, ContextCompat.getMainExecutor(context))

3. Bind CameraX UseCases and CameraSelector to a lifecycle using the ProcessCameraProvider instance and get Camera and CameraControl objects:

// CameraSelector is also a new thing
val cameraSelector = CameraSelector.Builder().apply {
    requireLensFacing(lensFacing)
}.build()

val preview = ...
val imageCapture = ...
val imageAnalysis = ...

val camera = cameraProvider.bindToLifecycle(lifecycleOwner, cameraSelector, preview, imageCapture, imageAnalysis)
val cameraControl = camera.cameraControl

Check Camera-Core Version 1.0.0-alpha07 API changes for any additional references.