kotlin implementation 'androidx.activity:activity-ktx:1.4.0' kotlin import androidx.activity.viewModels import androidx.activity.result.contract.ActivityResultContracts import androidx.appcompat.app.AppCompatActivity kotlin private val viewModel: MyViewModel by viewModels() kotlin startActivity<SecondActivity>() kotlin private val launcher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result -> if (result.resultCode == Activity.RESULT_OK) { } } kotlin requestPermissions(arrayOf(Manifest.permission.CAMERA), 1) kotlin setResult(Activity.RESULT_OK) finish() kotlin onBackPressedDispatcher.addCallback(this) { }