Close Activity after result

Question

I’m trying to implement a tutorial using Zxing to read Qrcode. In the tutorial who was accompanying him uses the Eclipse and places the libs of Zxing all importing "by hand". I am using Android Studio and used the Gradle to generate the dependencies.

But there comes a time when he edits a class of lib of Zxing because it is necessary after taking the photo of Qrcode that returns to ActivityMain to show the result, otherwise it gets stopped in the Activity camera.

My doubts are:

• I can’t find where the Gradle lower the dependencies for me to edit it.
• Is there any other way to make sure that after reading the Qrcode to Activity close?

Here is the code as implemented.

Answer 1

You don’t necessarily need to change the class CaptureActivity, you can create a Activity your extending this, and as the change is only in this method, just overwrite it and implement as the tutorial says.

Let’s assume you create this new Activity thus:

public class ScanActivity extends CaptureActivity {
    @Override
    public void handleDecode(Result rawResult, Bitmap barcode, float scaleFactor) {
        Intent it = getIntent();
        it.putExtra("SCAN_RESULT", rawResult.getText());
        it.putExtra("SCAN_FORMAT", rawResult.getBarcodeFormat());
        setResult(Activity.RESULT_OK, it);
        finish();
    }
}

So, enough instead of calling CaptureActivity directly, call this your new ScanActivity:

Intent it = new Intent(MainActivity.this, ScanActivity.class);

Remembering that you should also change the Manifest, as indicated in the tutorial.