如何在android中的对话框中显示已存储在字符串变量中的结果

Question

我正在尝试使用xzing import扫描QR码并在对话框中显示2个按钮的QR详细信息。第一个按钮应该能够拨打固定号码（紧急号码），第二个按钮应该能够通过whatsapp分享QR详细信息以及我当前的位置。

       public void onActivityResult(int requestCode, int resultCode, Intent intent) {
                if (requestCode == 0) {
                    if (resultCode == RESULT_OK) {
get the extras that are returned from the intent
                        String contents = intent.getStringExtra("SCAN_RESULT");


                        String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
    >I want to show the string value in the dialogbox with 2 buttons.                    
                        showDialog(this);

                    }
                }
            }

            private void showDialog(AndroidQrCodeExample androidQrCodeExample) {
                AlertDialog.Builder builder = new AlertDialog.Builder(this)
 >I dont know whether I can use this command setmessage to   display as I am new in android.Please explain me How to do it.                     
.setMessage(contents)
                        .setTitle("Response")
                        .setPositiveButton("OK",new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog,int which) {
                                dialog.dismiss();
                            }

                        });

                builder.show();
            }
        }strong text