How To Initialize Camera In Compose

I want to get a camera view by compose androidView, but the following code seems not work for me. @Composable fun CameraPreviewScreen() { val lifecycleOwner = LifecycleOwnerAmb

Solution 1:

Since your problem seems related to camera permission, you can use Permissions APIs from Accompanist library to ask the user for permissions.

The docs show an example with camera

@ComposableprivatefunFeatureThatRequiresCameraPermission(
    navigateToSettingsScreen: () -> Unit
) {
    // Track if the user doesn't want to see the rationale any more.var doNotShowRationale by rememberSaveable { mutableStateOf(false) }

    val cameraPermissionState = rememberPermissionState(android.Manifest.permission.CAMERA)
    PermissionRequired(
        permissionState = cameraPermissionState,
        permissionNotGrantedContent = {
            if (doNotShowRationale) {
                Text("Feature not available")
            } else {
                Column {
                    Text("The camera is important for this app. Please grant the permission.")
                    Spacer(modifier = Modifier.height(8.dp))
                    Row {
                        Button(onClick = { cameraPermissionState.launchPermissionRequest() }) {
                            Text("Ok!")
                        }
                        Spacer(Modifier.width(8.dp))
                        Button(onClick = { doNotShowRationale = true }) {
                            Text("Nope")
                        }
                    }
                }
            }
        },
        permissionNotAvailableContent = {
            Column {
                Text(
                    "Camera permission denied. See this FAQ with information about why we " +
                        "need this permission. Please, grant us access on the Settings screen."
                )
                Spacer(modifier = Modifier.height(8.dp))
                Button(onClick = navigateToSettingsScreen) {
                    Text("Open Settings")
                }
            }
        }
    ) {
        Text("Camera permission Granted")
    }
}