z-bar扫描仪，如何停止连续扫描？我想扫描一次后扫描仪停止

Question

**这是我的代码，我想要的是在第一次调用callApi（）方法后应该调用，但是它继续扫描**

  @Override
public void handleResult(Result result) {

    System.out.print("BAR_CODE  "+ result.getContents());
    System.out.print("BAR_CODEE  "+result.getBarcodeFormat().getName());
    barcode_number = result.getContents();
    productcode.setText(result.getContents());

    //resume Camera
    scanner_bar.resumeCameraPreview(this);

    dialog = new ProgressDialog(getActivity());
    dialog.setCancelable(true);
    dialog.setTitle("Loading");
    dialog.show();

    //callApi
    if(barcode_number != "") {

        callApi(barcode_number);
    }

};

Answer 1

用这个替换你的代码

    @Override
public void handleResult(Result result) {

    System.out.print("BAR_CODE  "+ result.getContents());
    System.out.print("BAR_CODEE  "+result.getBarcodeFormat().getName());
    barcode_number = result.getContents();
    productcode.setText(result.getContents());

    //resume Camera
    scanner_bar.resumeCameraPreview(this);

    dialog = new ProgressDialog(getActivity());
    dialog.setCancelable(true);
    dialog.setTitle("Loading");
    dialog.show();

    //callApi
    if(barcode_number != "") {
        scanner_bar.stopCamera(); 
        callApi(barcode_number);
    }

};