在实现来自 Google CodeLabs 的代码时，我在启动 CameraActivity - CameraX - Google Code Labs时收到此崩溃报告
日志：
进程：in.novopay.novoloan，PID：5845 java.lang.IllegalArgumentException：无法获取用例 androidx.camera.core.Preview-4817149b-004d-42b8-a103-ea998038268b 在 androidx.camera.camera2.impl 的相机 ID .Camera2DeviceSurfaceManager.getCameraIdFromConfig(Camera2DeviceSurfaceManager.java:310) 在 androidx.camera.camera.camera2.impl.Camera2DeviceSurfaceManager.requiresCorrectedAspectRatio(Camera2DeviceSurfaceManager.java:268) 在 androidx.camera.core.Preview.updateUseCaseConfig(Preview.java:387) 在 androidx。 camera.core.UseCase.(UseCase.java:92) at androidx.camera.core.Preview.(Preview.java:99) at in.novopay.uicontrollibrary.activities.CameraActivity.startCamera(CameraActivity.kt:94) at in .novopay.uicontrollibrary.activities.CameraActivity.access$startCamera(CameraActivity.kt:30) 在 in.novopay.uicontrollibrary.activities.CameraActivity$checkPermission$1.run(CameraActivity.kt:45) 在 android.os.Handler.handleCallback(Handler.java:790) 在 android.os.Handler.dispatchMessage(Handler. java:99) 在 android.os.Looper.loop(Looper.java:164) 在 android.app.ActivityThread.main(ActivityThread.java:7000) 在 java.lang.reflect.Method.invoke(Native Method) 在 com .android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 原因：java.lang.IllegalArgumentException：选项不存在：选项{id=camerax.core.camera.lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}CameraActivity$checkPermission$1.run(CameraActivity.kt:45) at android.os.Handler.handleCallback(Handler.java:790) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper。在 com.android.internal.os.RuntimeInit$MethodAndArgsCaller 的 java.lang.reflect.Method.invoke(Native Method) 的 android.app.ActivityThread.main(ActivityThread.java:7000) 的循环（Looper.java:164）。在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 运行（RuntimeInit.java:441） 原因：java.lang.IllegalArgumentException：选项不存在：Option{id=camerax.core.camera .lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}CameraActivity$checkPermission$1.run(CameraActivity.kt:45) at android.os.Handler.handleCallback(Handler.java:790) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper。在 com.android.internal.os.RuntimeInit$MethodAndArgsCaller 的 java.lang.reflect.Method.invoke(Native Method) 的 android.app.ActivityThread.main(ActivityThread.java:7000) 的循环（Looper.java:164）。在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 运行（RuntimeInit.java:441） 原因：java.lang.IllegalArgumentException：选项不存在：Option{id=camerax.core.camera .lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}Handler.dispatchMessage(Handler.java:99) 在 android.os.Looper.loop(Looper.java:164) 在 android.app.ActivityThread.main(ActivityThread.java:7000) 在 java.lang.reflect.Method.invoke (Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 原因：java.lang .IllegalArgumentException：选项不存在：Option{id=camerax.core.camera.lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}Handler.dispatchMessage(Handler.java:99) 在 android.os.Looper.loop(Looper.java:164) 在 android.app.ActivityThread.main(ActivityThread.java:7000) 在 java.lang.reflect.Method.invoke (Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 原因：java.lang .IllegalArgumentException：选项不存在：Option{id=camerax.core.camera.lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 原因：java.lang.IllegalArgumentException：选项不存在：Option{id=camerax .core.camera.lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:441) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1408) 原因：java.lang.IllegalArgumentException：选项不存在：Option{id=camerax .core.camera.lensFacing, valueClass=class androidx.camera.core.CameraX$LensFacing, token=null}
// This is an arbitrary number we are using to keep tab of the permission
// request. Where an app has multiple context for requesting permission,
// this can help differentiate the different contexts
private const val REQUEST_CODE_PERMISSIONS = 10
// This is an array of all the permission specified in the manifest
private val REQUIRED_PERMISSIONS = arrayOf(Manifest.permission.CAMERA)
class CameraActivity : AppCompatActivity(), LifecycleOwner {
lateinit var viewFinder: TextureView
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_camera)
viewFinder = findViewById(R.id.texture_view)
// startCamera()
checkPermission();
}
fun checkPermission() {
if (allPermissionsGranted()) {
viewFinder.post { startCamera() }
} else {
ActivityCompat.requestPermissions(
this, REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS)
}
// Every time the provided texture view changes, recompute layout
viewFinder.addOnLayoutChangeListener { _, _, _, _, _, _, _, _, _ ->
updateTransform()
}
}
/**
* Process result from permission request dialog box, has the request
* been granted? If yes, start Camera. Otherwise display a toast
*/
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
if (requestCode == REQUEST_CODE_PERMISSIONS) {
if (allPermissionsGranted()) {
viewFinder.post {
startCamera()
}
} else {
Toast.makeText(this,
"Permissions not granted by the user.",
Toast.LENGTH_SHORT).show()
finish()
}
}
}
/**
* Check if all permission specified in the manifest have been granted
*/
private fun allPermissionsGranted() = REQUIRED_PERMISSIONS.all {
ContextCompat.checkSelfPermission(
baseContext, it) == PackageManager.PERMISSION_GRANTED
}
private fun startCamera() {
// Create configuration object for the viewfinder use case
val previewConfig = PreviewConfig.Builder().apply {
setTargetAspectRatio(Rational(1, 1))
setTargetResolution(Size(640, 640))
}.build()
// Build the viewfinder use case
val preview = Preview(previewConfig)
// Every time the viewfinder is updated, recompute layout
preview.setOnPreviewOutputUpdateListener {
// To update the SurfaceTexture, we have to remove it and re-add it
val parent = viewFinder.parent as ViewGroup
parent.removeView(viewFinder)
parent.addView(viewFinder, 0)
viewFinder.surfaceTexture = it.surfaceTexture
updateTransform()
}
// Bind use cases to lifecycle
// If Android Studio complains about "this" being not a LifecycleOwner
// try rebuilding the project or updating the appcompat dependency to
// version 1.1.0 or higher.
CameraX.bindToLifecycle(this, preview)
}
private fun updateTransform() {
val matrix = Matrix()
// Compute the center of the view finder
val centerX = viewFinder.width / 2f
val centerY = viewFinder.height / 2f
// Correct preview output to account for display rotation
val rotationDegrees = when(viewFinder.display.rotation) {
Surface.ROTATION_0 -> 0
Surface.ROTATION_90 -> 90
Surface.ROTATION_180 -> 180
Surface.ROTATION_270 -> 270
else -> return
}
matrix.postRotate(-rotationDegrees.toFloat(), centerX, centerY)
// Finally, apply transformations to our TextureView
viewFinder.setTransform(matrix)
}
}