Issue
So i'm making this app, that captures an image, and that image is used further to extract text from it. I found this code, to access the camera and capture image (in a fragment):
class HomeFragment : Fragment() {
private var _binding: FragmentHomeBinding? = null
private val binding get() = _binding!!
private val CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 1888
var button: Button? = null
var imageView: ImageView? = null
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View {
_binding = FragmentHomeBinding.inflate(inflater, container, false)
val root: View = binding.root
button!!.setOnClickListener {
fun onClick(view: View?) {
val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
startActivityForResult(
intent,
CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE
)
}
}
return root
}
fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
val bmp = data.extras!!["data"] as Bitmap?
val stream = ByteArrayOutputStream()
bmp!!.compress(Bitmap.CompressFormat.PNG, 100, stream)
val byteArray: ByteArray = stream.toByteArray()
// convert byte array to Bitmap
val bitmap = BitmapFactory.decodeByteArray(
byteArray, 0,
byteArray.size
)
imageView!!.setImageBitmap(bitmap)
}
}
}
override fun onDestroyView() {
super.onDestroyView()
_binding = null
}
}
But there is an "accidental override" error with onActivityResult() method, and i don't know how to fix that:
I've tried adding this to MainActivity class, hoping for the best:
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
}
But it doesn't seem to help. I am a total beginner, but i've got to make this app real quick, so will be grateful for any advice or explanation.
upd: I've also tried adding keyword override, but i get error "onActivityResult() overrides nothing"
Solution
Your definition of OnActivityResult()
isn't correct. It needs to have the same signature as the method you are trying to override. You need this:
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?)
You need the question mark on the last parameter type Intent?
because the value of this parameter may be null
. This will match the signature of the method from Fragment
that you are trying to override.
Answered By - David Wasser
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