Xamarin.Android：ZXing扫描仪从一个小区域（非全屏）

Question

我想显示扫描仪在一个小区域，而不是全屏，在post here（但Xamarin.Android和MvvmCross在片段）。

对于这一点，我有我的XML：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:local="http://schemas.android.com/apk/res-auto"> 
<FrameLayout 
    android:id="@+id/barcodeview" 
    android:layout_width="match_parent" 
    android:layout_height="100dp" 
    android:layout_weight="0"> 
    <View 
     android:layout_width="fill_parent" 
     android:layout_height="2dp" 
     android:background="#d13033" 
     android:layout_gravity="center_vertical" /> 
</FrameLayout> 
<Mvx.MvxListView 
    android:layout_width="match_parent" 
    android:layout_height="0dip" 
    android:layout_weight="1" 
    local:MvxItemTemplate="@layout/item_product" 
    local:MvxBind="ItemsSource Products" /> 

等为http://imgur.com/a/t1sgq

我的片段观点：

public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
{ 
    base.OnCreateView(inflater, container, savedInstanceState); 
    var view = this.BindingInflate(Resource.Layout.Products, null); 
    var activity = Mvx.Resolve<IMvxAndroidCurrentTopActivity>().Activity; 
    MobileBarcodeScanner.Initialize(activity.Application); 
    var barcodeview = view.FindViewById<FrameLayout>(Resource.Id.barcodeview); 

    var scanner = new ZXingScannerFragment(); 
    scanner.UseCustomOverlayView = true; 
    scanner.CustomOverlayView = barcodeview; 
    scanner.StartScanning(result => 
    { 
     Mvx.Trace("Scanned with ZXingScannerFragment : " + result.Text); 
    }); 
    //_mobileBarcodeScanner = new MobileBarcodeScanner(); 
    //_mobileBarcodeScanner.UseCustomOverlay = true; 
    //_mobileBarcodeScanner.CustomOverlay = barcodeview; 
    //_mobileBarcodeScanner.Torch(true); 
    //_mobileBarcodeScanner.ScanContinuously(result => 
    //{ 
    // Mvx.Trace("Scanned :" + result.Text); 
    //}); 
    return view; 
} 

}

我尝试使用MobileBarcodeScanner和ZXingScannerFragment类：

使用MobileBarcodeScanner，扫描仪将以全屏模式启动并运行。

使用ZXingScannerFragment时，扫描仪无法启动。即使我使用FragmentManager.Replace(barcodeview, new ZXingScannerFragment()).Commit())。

Answer 1

我已经做了一些非常相似的事情，但使用了不同的方法。我将ZXing直接集成到我的应用程序中。然后我用在这里找到

https://github.com/zxing/zxing/blob/master/android/src/com/google/zxing/client/android/CaptureActivity.java

到我的类模型关闭的类。要修改的重要代码是在和的onResume方法的onPause，沿着那里R.id.preview_view可以与您要使用的小区域视图替换的

SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view); 
SurfaceHolder surfaceHolder = surfaceView.getHolder(); 
if (hasSurface) { 
    // The activity was paused but not stopped, so the surface still exists. Therefore 
    // surfaceCreated() won't be called, so init the camera here. 
    initCamera(surfaceHolder); 
} else { 
     // Install the callback and wait for surfaceCreated() to init the camera. 
    surfaceHolder.addCallback(this); 
} 

线的东西。