CameraX memory leak

Download CameraX sample. Add new empty activity. Add LeakCanary dependency and LeakSentry.refWatcher.watch(this) to onDestroyView of CameraFragment. After app started and all permissions granted start new activity and call finish on MainActivity. Like this f.x.

        Handler().postDelayed({
            startActivity(Intent(this, TestActivity::class.java))
            finish()
        }, 10000L)

You will see CameraX instance is leaking. Some screens from my app. In your sample leaks are the same.

[Boucaa]

I am facing the same issue, but @ocarey 's workaround sometimes crashes the app. I’ve also noticed that for every instance of the activity that’s leaked, there is also a leaked androidx.lifecycle.ReportFragment, so I’m guessing that it’s a bug in the camera lifecycle library (androidx.camera:camera-lifecycle)

[ocarey]

By adding this to Activity onDestroy() I was able to force a Garbage Collection of my Camera Activity. Version alpha09 w/ CameraXBasic example app:

override fun onDestroy() {
        super.onDestroy()
        tearDownCamera()
    }

private fun tearDownCamera() {
        val cameraProviderFuture = ProcessCameraProvider.getInstance(this)
        cameraProviderFuture.addListener(Runnable {
            val cameraProvider: ProcessCameraProvider = cameraProviderFuture.get()
            cameraProvider.shutdown()
        }, ContextCompat.getMainExecutor(this))
    }

Best, Owen