BarCode Scanner

If the Barcode Scanner is installed on your Android device, then you can scan and return the result.Let's see how to do it:

public Button.OnClickListener mScan = new Button.OnClickListener() {
    

   public void onClick(View v) {
        Intent intent = new Intent("com.google.zxing.client.android.SCAN");
        intent.setPackage("com.google.zxing.client.android");
        intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
        startActivityForResult(intent, 0);
    }
}; 

public void onActivityResult(int requestCode, int resultCode, Intent intent) {
     

    if (requestCode == 0) {
        if (resultCode == RESULT_OK) {
            String contents = intent.getStringExtra("SCAN_RESULT");
            String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
            // Handle successful scan
        } else if (resultCode == RESULT_CANCELED) {
            // Handle cancel
        }
    }
}