Why doesn't the QRbarcode app get camera permission - android-studio

Question

I am following a tutorial to make a barcode-scanning app using a library from ZXing.
I noticed when I run the app it doesn't ask for the camera's permission, and I think it has to do with the "activityresultlauncher" since I had to use that instead of "startactivityfromresult". But I am unsure. Help would be appreciated.
Thank you
public class MainActivity extends AppCompatActivity {
//Makes permission granted permanent
public static final int CAMERA_REQUEST_PERMISSION = 1;
public static final int SCANNING_REQUEST_CODE = 2;
Button button;
ActivityResultLauncher<Intent> activityResultLauncher=registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
new ActivityResultCallback<ActivityResult>() {
#Override
public void onActivityResult(ActivityResult scanning_result) {
int result = scanning_result.getResultCode();
Intent data =scanning_result.getData();
new Intent(MainActivity.this,ScanningActivity.class);
}
}
);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = findViewById(R.id.btnscan);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(MainActivity.this,ScanningActivity.class);
activityResultLauncher.launch(intent);
//Start Scanning
}
});
}
//Checks if android version is better than api
private void StartScanningActivity (){
Intent intent = new Intent();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
//start Scanning
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
//asks for permission
requestPermissions(new String[]{Manifest.permission.CAMERA}, CAMERA_REQUEST_PERMISSION);
} else {
//Start scanning if passes check
activityResultLauncher.launch(intent);
}
}else{
activityResultLauncher.launch(intent);
}
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == CAMERA_REQUEST_PERMISSION) {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Intent intent = new Intent(MainActivity.this,ScanningActivity.class);
activityResultLauncher.launch(intent);
}
}
}
}