Code does not build

[astro-friedel]

The code as of d8d42b8 does not build out of the box. I am running Android Studio 2025.1.3 When compiling I get the following error:

Task :app:compileDebugKotlin FAILED
e: file:///home/friedel/devel/android/Meta-Passthrough-Camera-API-Samples/app/src/main/java/com/oculus/camerademo/MainActivity.kt:172:13 Cannot find a parameter with this name: contentDescription

FAILURE: Build failed with an exception.

In fact I have to go back to the initial commit (9a190ee) to get the code to build at all.

[Marcos2002VidalG]

Try this to

Task :app:compileDebugKotlin FAILED
e: file:///home/friedel/devel/android/Meta-Passthrough-Camera-API-Samples/app/src/main/java/com/oculus/camerademo/MainActivity.kt:172:13 Cannot find a parameter with this name: contentDescription

FAILURE: Build failed with an exception.

// (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.

package com.oculus.camerademo

import android.Manifest
import android.graphics.SurfaceTexture
import android.os.Bundle
import android.view.Surface
import android.view.TextureView
import android.view.TextureView.SurfaceTextureListener
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.result.contract.ActivityResultContracts
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.material3.Button
import androidx.compose.material3.Scaffold
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.viewinterop.AndroidView
import androidx.lifecycle.ViewModelProvider
import com.oculus.camerademo.ui.theme.CameraDemoTheme

class MainActivity : ComponentActivity() {
companion object {
private const val FLAG_ENABLED = "enabled"
}

private val viewModel by lazy {
ViewModelProvider.AndroidViewModelFactory(application).create(XrCameraDemoViewModel::class.java)
}

private val requestPermissionLauncher =
registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) {
requestResults ->
viewModel.onPermissionGranted(requestResults)
}

private val permissionManager = PermissionManager()

private var previewSurface: Surface? = null

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
viewModel.uiState.observe(this) { uiState ->
setContent {
CameraDemoTheme {
Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
CameraDemoUi(
modifier = Modifier.fillMaxSize().padding(innerPadding),
cameraState = uiState,
onStartCamera = { onStartCamera() },
onStopCamera = { onStopCamera() },
onExit = { onExit() },
)
}
}
}
}

viewModel.cameraEvents.observe(this) { event ->
  if (event is CameraEvent.NotificationEvent) {
    Toast.makeText(this, event.message, Toast.LENGTH_SHORT).show()
    viewModel.onHandleCameraEvent()
  }
}

}

override fun onResume() {
super.onResume()
viewModel.permissionRequestState.observe(this) { permissionState ->
val permissionsToRequest = mutableListOf()
if (!permissionState.nativeCameraPermissionGranted) {
permissionsToRequest.add(PermissionManager.ANDROID_CAMERA_PERMISSION)
}
if (!permissionState.vendorCameraPermissionGranted) {
permissionsToRequest.add(PermissionManager.HZOS_CAMERA_PERMISSION)
}

  if (permissionsToRequest.isNotEmpty()) {
    requestPermissionLauncher.launch(permissionsToRequest.toTypedArray())
  } else {
    viewModel.init()
  }
}

previewSurface?.let { viewModel.onResume(it) }

}

override fun onPause() {
super.onPause()
viewModel.onPause()
}

override fun onStop() {
super.onStop()
viewModel.shutdown()
}

private fun onStartCamera() {
checkPermissions()
val surface = previewSurface
if (surface == null) {
Toast.makeText(this, "Something went wrong - surface is not ready", Toast.LENGTH_SHORT).show()
return
}
viewModel.startCamera(surface)
}

private fun onStopCamera() {
viewModel.stopCamera()
}

private fun onExit() {
viewModel.shutdown()
finish()
}

private fun checkPermissions() {
if (
!permissionManager.checkPermissions(
this,
Manifest.permission.CAMERA,
PermissionManager.HZOS_CAMERA_PERMISSION,
)
) {
Toast.makeText(this, "Missing required permissions", Toast.LENGTH_SHORT).show()
return
}
}

private fun updatePreviewTexture(previewSurfaceTexture: SurfaceTexture, width: Int, height: Int) {
previewSurface = Surface(previewSurfaceTexture)
}

@composable
fun CameraDemoUi(
modifier: Modifier = Modifier,
cameraState: CameraUiState,
onStartCamera: () -> Unit,
onStopCamera: () -> Unit,
onExit: () -> Unit,
) {
Column(
modifier = modifier,
verticalArrangement = Arrangement.Center,
) {
Row(horizontalArrangement = Arrangement.SpaceBetween) {
Button(
onClick = onStartCamera,
// ❌ Línea eliminada: contentDescription = stringResource(R.string.button_description_start_camera),
) {
Text("Start camera")
}

    Column(
        verticalArrangement = Arrangement.Center,
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
      Text("Avg Brightness")
      Text(cameraState.cameraBrightness.toString())
    }
  }
  Row(horizontalArrangement = Arrangement.SpaceEvenly) {
    Button(
        onClick = onStopCamera,
        // ❌ Línea eliminada: contentDescription = stringResource(R.string.button_description_stop_camera),
    ) {
      Text("Stop camera")
    }
  }
  Row(horizontalArrangement = Arrangement.SpaceEvenly) {
    Button(
        onClick = onExit,
        // ❌ Línea eliminada: contentDescription = stringResource(R.string.button_description_exit),
    ) {
      Text("Exit")
    }
  }
  Row(horizontalArrangement = Arrangement.SpaceEvenly) {
    AndroidView(
        modifier = modifier,
        factory = {
          TextureView(this@MainActivity).apply {
            surfaceTextureListener =
                object : SurfaceTextureListener {
                  override fun onSurfaceTextureAvailable(
                      surface: SurfaceTexture,
                      width: Int,
                      height: Int,
                  ) {
                    updatePreviewTexture(surface, width, height)
                  }

                  override fun onSurfaceTextureSizeChanged(
                      surface: SurfaceTexture,
                      width: Int,
                      height: Int,
                  ) {
                    updatePreviewTexture(surface, width, height)
                  }

                  override fun onSurfaceTextureDestroyed(surface: SurfaceTexture): Boolean {
                    return true
                  }

                  override fun onSurfaceTextureUpdated(surface: SurfaceTexture) {}
                }
          }
        },
    )
  }
}

}
}