xamarin.forms 使用ZXing扫描二维码

1. Android工程包含ZXing.Net.Mobile.Forms

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2. 在C# 工程中, 包含ZXing.Net.Mobile

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3. 在Android工程的MainActivity.cs中, 添加下面代码:

global::ZXing.Net.Mobile.Forms.Android.Platform.Init();

ZXing.Mobile.MobileBarcodeScanner.Initialize(this.Application);

using System;using Android.App;using Android.Content.PM;using Android.Runtime;using Android.Views;using Android.Widget;using Android.OS;namespace TestScan.Droid{    [Activity(Label = "TestScan", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity    {        protected override void OnCreate(Bundle bundle)        {            TabLayoutResource = Resource.Layout.Tabbar;            ToolbarResource = Resource.Layout.Toolbar;            base.OnCreate(bundle);            global::Xamarin.Forms.Forms.Init(this, bundle);            global::ZXing.Net.Mobile.Forms.Android.Platform.Init();            ZXing.Mobile.MobileBarcodeScanner.Initialize(this.Application);            LoadApplication(new App());        }    }}

4. 在C#页面工程中就可以这样调用扫码功能了:

private async void Button_Clicked(object sender, EventArgs e){        var scanner = new ZXing.Mobile.MobileBarcodeScanner();    var result = await scanner.Scan();    if (result != null)        Console.WriteLine("Scanned Barcode: " + result.Text);}

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demo下载地址

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