获取一个值并将其显示在 EditText 上

Question

我有以下代码，它是一个使用ZXing库的条码扫描应用程序。

txtoperatrice.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            IntentIntegrator integrator = new IntentIntegrator(activity);
            integrator.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES);
            integrator.setPrompt("Scannez le code à barres SVP");
            integrator.setCameraId(0);
            integrator.setBeepEnabled(true);
            integrator.setBarcodeImageEnabled(false);
            integrator.initiateScan();
        }
    });
}

txtoperatrice是显示条码结果的EditText。结果由以下代码得到：

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result!=null){
        if(result.getContents()==null){
            Toast.makeText(this, "Erreur de Scan", Toast.LENGTH_LONG).show();
        }
        else{
            ///////// DISPLAY THE CODE IN THE EDITTEXT txtoperatrice
        }
    }
    else{
        super.onActivityResult(requestCode, resultCode, data);
    }
}

Answer 1

将 txtoperatrice 设为全局变量，然后通过 findViewById 在您的 onCreate 方法

上分配它

和 onActivityResult 使用以下代码将其文本设置为结果

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result!=null){
        if(result.getContents()==null){
            Toast.makeText(this, "Erreur de Scan", Toast.LENGTH_LONG).show();
        }
        else{
           txtoperatrice.setText(result.getContents());
        }
    }
    else{
        super.onActivityResult(requestCode, resultCode, data);
    }
}

Answer 2

如果 EditText txtoperatrice 的对象在您的 class 中是全局的，并且在 activity 的 onCreate 函数中使用 findViewById(R.id.yourEditText) 给出 XML 组件的 ID .

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result!=null){
        if(result.getContents()==null){
            Toast.makeText(this, "Erreur de Scan", Toast.LENGTH_LONG).show();
        }
        else{
            //you should have a string to put in this argument
            //get your result in a string for example resultStr
            String resultStr = result.getContents().tostring();
            //the above line is just to clear what to do. it may not work exacly 
            // and then...
            txtoperatrice.setText(resultStr);
        }
    }
    else{
        super.onActivityResult(requestCode, resultCode, data);
    }

}

获取一个值并将其显示在 EditText 上

Getting a value and displaying it on an EditText

java

android

barcode-scanner