如何使用xamarin android扫描二维码

本文关键字：二维 何使用 xamarin android 扫描 | 更新日期: 2023-09-27 17:58:26

我想创建一个活动来扫描二维码，该活动扩展了IOnclickListenr:

    [Activity(Label = "ScanActivity")]
    public class ScanActivity : Activity ,IOnClickListener

我定义OnCreate如下，我有一个扫描按钮，你可以看到：

           protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
            SetContentView(Resource.Layout.activity_scan);
            Button scanBtn = FindViewById<Button>(Resource.Id.button_scan);
            scanBtn.SetOnClickListener(this);                               
        }

然后我必须实现以下功能：

 MobileBarcodeScanner scanner;
        public void OnClick(View v)
        {
            //respond to clicks
            if (v.Id == Resource.Id.button_scan)
            {
                //scan
                //IntentIntegrator scanIntegrator = new IntentIntegrator(this);
                //scanIntegrator.initiateScan();

            }
        }
        public void onActivityResult(int requestCode, Android.App.Result resultCode, Intent intent)
        {
   //       if (scanningResult != null) {
//  String scanContent = scanningResult.getContents();
//  }
//else{
//Toast toast = Toast.makeText(getApplicationContext(), 
// "No scan data received!", Toast.LENGTH_SHORT);
// toast.show();
//} 
        }

我不知道如何使用c#和Xamarin。安卓系统，任何建议都将不胜感激，谢谢。

如何使用xamarin android扫描二维码

我建议使用ZXing.Net.Mobile的软件包。我用它来扫描条形码和二维码。效果真的很好！

QRCodeWriter writer = new QRCodeWriter(); 
ZXing.Common.BitMatrix matrix;
int size = 120; matrix = writer.encode("http://aumansoftware.com;", BarcodeFormat.QR_CODE, size, size, null);
SizeF qrcCodeSize = new SizeF(size,size);
UIGraphics.BeginImageContext(qrcCodeSize);
using (CGContext cont = UIGraphics.GetCurrentContext()) { cont.SetLineWidth(1); cont.SetFillColor(UIColor.White.CGColor); cont.AddRect(new RectangleF(0,0,qrcCodeSize.Width,qrcCodeSize.Height)); cont.DrawPath(CGPathDrawingMode.Fill);
                    cont.SetFillColor(UIColor.Black.CGColor);

                    for (int y = 0; y < matrix.Height; y++)
                    {
                        for (int x = 0; x < matrix.Width; x++)
                        {
                            if(matrix[x,y]) cont.AddRect(new RectangleF(x,y,1,1));

                        }
                    }

                    cont.DrawPath(CGPathDrawingMode.Fill);
                    UIImage qrcImage = UIGraphics.GetImageFromCurrentImageContext();
// show image in imageview UIImageView qrcImageView defined earlier... qrcImageView.Image = qrcImage; qrcImageView.SetNeedsDisplay();
}//end using cont
UIGraphics.EndImageContext();
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