Блог

 ...
static final int SCAN_RESULT = 1;  // The request code
...
  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // Check which request we're responding to
        if (requestCode == SCAN_RESULT) {
            // Make sure the request was successful
            if (resultCode == RESULT_OK) {
            // Action to take if result successful
                Intent intent = new Intent(this, ResultActivity.class);
                startActivity(intent);

            }
        }
    }  

 ...
public class ScanBarcodeActivity extends AppCompatActivity {

    Button mBtnClose;

    private CaptureManager capture;
    private DecoratedBarcodeView barcodeScannerView;
    private ViewfinderView viewfinderView;

    private void initViews() {
        mBtnClose = findViewById(R.id.barcode_header_close);
        barcodeScannerView = findViewById(R.id.zxing_barcode_scanner);
        viewfinderView = findViewById(R.id.zxing_viewfinder_view);
    }

    private void initListener() {
        mBtnClose.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                finish();
            }
        });
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_barcode);
        initViews();
        initListener();

        capture = new CaptureManager(this, barcodeScannerView);
        capture.initializeFromIntent(getIntent(), savedInstanceState);
        capture.decode();

        changeMaskColor(null);
    }

    @Override
    protected void onResume() {
        super.onResume();
        capture.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        capture.onPause();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        capture.onDestroy();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        capture.onSaveInstanceState(outState);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        return barcodeScannerView.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event);
    }
    
    public void changeMaskColor(View view) {

    }

}  

 static final int SCAN_RESULT = 1;  // The request code

    String QR_CODE = "EC0111-1234567899";
    int RESULT = Integer.parseInt(QR_CODE);

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        // Check which request we're responding to
        if (requestCode == SCAN_RESULT) {
            // Make sure the request was successful
            if (SCAN_RESULT == RESULT) {
                Intent intent = new Intent(this, ResultActivity.class);
                startActivity(intent);
            } else {
                Toast.makeText(this, "Incorrect QR code, please try again", Toast.LENGTH_LONG).show();
            }

        }
    }