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Android Studio – How to return a result in ActivityResultLauncher

I’m using ZXing API.

I have the following code:

button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v){
                IntentIntegrator integrator = new IntentIntegrator(activity);
                integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
                integrator.setCameraId(0);
                integrator.setOrientationLocked(true);
                integrator.setPrompt("Para usar o flash utilizar os botões do volume");
                integrator.initiateScan();

However, I don’t know how to publish the initiateScan using the ActivityResultLauncher mGetContent = registerForActivityResult(new ActivityResultContracts.GetContent().

Could you please help me?
Kind regards,

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2

Answers


  1. Chosen as BEST ANSWER
    0

    I add:

    ActivityResultLauncher<Intent> activityResultLaucher;

activityResultLaucher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), new ActivityResultCallback<ActivityResult>() {
            @Override
            public void onActivityResult(ActivityResult result) {
                if(result.getResultCode() == RESULT_OK && result.getData() != null){
                    Intent data = result.getData();
                }
            }
        });

    and:

    button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v){
                IntentIntegrator integrator = new IntentIntegrator(activity);
                integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
                integrator.setCameraId(0);
                integrator.setOrientationLocked(true);
                integrator.setPrompt("Para usar o flash utilizar os botões do volume");
                integrator.initiateScan();
                ActivityResultLauncher.launch(integrator);
                }

             });

    But the ActivityResultLauncher.launch(integrator) doesn't work.


  2. 0

    You can launch scanner with ‘integrator.createScanIntent()’.

    activityResultLaucher.launch(integrator.createScanIntent());

    button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v){
                IntentIntegrator integrator = new IntentIntegrator(activity);
                integrator.setDesiredBarcodeFormats(IntentIntegrator.QR_CODE_TYPES);
                integrator.setCameraId(0);
                integrator.setOrientationLocked(true);
                integrator.setPrompt("Para usar o flash utilizar os botões do volume");
                // integrator.initiateScan(); <- remove this line

                // launch scanner with 'integrator.createScanIntent()'
                activityResultLaucher.launch(integrator.createScanIntent());
              }

             });
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