Xamarin ios ZXING 扫描仪不分析 QR
我使用的是 Iphone 10 和 ios 15.3.1,Zxing 版本 = 2.4.1,在 Windows 中编译 xamarin 项目。我一直在尝试使用 zxing 为 ios android 制作一个 qr 扫描仪,但是当我在 ios 中运行我的应用程序时,它不会进入 onResult 事件。我尝试了很多方法来做到这一点,但似乎没有任何效果。摄像机显示了,但结果永远不会是真实的。有人知道为什么会发生这种情况吗?我还尝试了其他开发人员使用 zxing 的应用程序,但它也不起作用。但是当我用相机应用程序扫描时它可以工作。
async void OnButtonClickedAsync(object sender, System.EventArgs e)
{
var options = new ZXing.Mobile.MobileBarcodeScanningOptions
{
CameraResolutionSelector = HandleCameraResolutionSelectorDelegate
};
MobileBarcodeScanner scanner = new MobileBarcodeScanner();
//scanner.TopText = "Hold camera up to barcode to scan";
//scanner.BottomText = "Barcode will automatically scan";
//scanner.UseCustomOverlay = false;
scanner.FlashButtonText = "Flash";
scanner.CancelButtonText = "Cancel";
scanner.Torch(true);
scanner.AutoFocus();
var result = await scanner.Scan(options);
HandleScanResult(result);
}
void HandleScanResult(ZXing.Result result)
{
if (result != null && !string.IsNullOrEmpty(result.Text))
scanResultText.Text = result.Text;
}
CameraResolution HandleCameraResolutionSelectorDelegate(List<CameraResolution> availableResolutions)
{
//Don't know if this will ever be null or empty
if (availableResolutions == null || availableResolutions.Count < 1)
return new CameraResolution() { Width = 800, Height = 600 };
//Debugging revealed that the last element in the list
//expresses the highest resolution. This could probably be more thorough.
return availableResolutions[availableResolutions.Count - 1];
}
i'm using an Iphone 10 with ios 15.3.1,Zxing version = 2.4.1, compiling the xamarin project in windows. I been trying to make a qr scanner with zxing for ios android, but when i run my app in ios, it won't go to the onResult event. I've tried with a lot of methods of doing this, but nothing seems to work. The camera shows, but the result never comes truh. ¿Does someone have any idea why this is happening? I also tried apps from other devs that are using zxing and it also dosen't work. but when i scan with the camera app it works.
async void OnButtonClickedAsync(object sender, System.EventArgs e)
{
var options = new ZXing.Mobile.MobileBarcodeScanningOptions
{
CameraResolutionSelector = HandleCameraResolutionSelectorDelegate
};
MobileBarcodeScanner scanner = new MobileBarcodeScanner();
//scanner.TopText = "Hold camera up to barcode to scan";
//scanner.BottomText = "Barcode will automatically scan";
//scanner.UseCustomOverlay = false;
scanner.FlashButtonText = "Flash";
scanner.CancelButtonText = "Cancel";
scanner.Torch(true);
scanner.AutoFocus();
var result = await scanner.Scan(options);
HandleScanResult(result);
}
void HandleScanResult(ZXing.Result result)
{
if (result != null && !string.IsNullOrEmpty(result.Text))
scanResultText.Text = result.Text;
}
CameraResolution HandleCameraResolutionSelectorDelegate(List<CameraResolution> availableResolutions)
{
//Don't know if this will ever be null or empty
if (availableResolutions == null || availableResolutions.Count < 1)
return new CameraResolution() { Width = 800, Height = 600 };
//Debugging revealed that the last element in the list
//expresses the highest resolution. This could probably be more thorough.
return availableResolutions[availableResolutions.Count - 1];
}
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我用mac编译的,运行得很好,一定是windows上的Visual Studio的一个bug。
I compiled using a mac and it worked fine, must be a bug of visual studio on windows.