Xamarin.Forms - Open an Android Intent?

问题

I am trying to open a PDF in Xamarin.Forms (Android)

How would I translate this Java to C# in the Android project (PCL) and what namespaces are used??

Intent intentUrl = new Intent(Intent.ACTION_VIEW);
intentUrl.setDataAndType(uri, "application/pdf");
intentUrl.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
mActivity.startActivity(intentUrl);

I've got this far, but how do I call the actiity in an injected class?

        Uri uri = new Uri("file:///" + PathToFile(filename));
        Intent intent = new Intent(Intent.ActionView);
        intent.SetDataAndType(uri, "application/pdf");
        intent.SetFlags(ActivityFlags.ClearTop);
        Android.MainActivity. ???????

回答1:

Solution

using Uri = Android.Net.Uri;

        Intent intent = new Intent(Intent.ActionView);
        intent.SetDataAndType(Uri.Parse("file:///" + PathToFile(filename)), "application/pdf");
        intent.SetFlags(ActivityFlags.ClearTop);
        Forms.Context.StartActivity(intent);
        return null;

来源：https://stackoverflow.com/questions/27193557/xamarin-forms-open-an-android-intent