xamarin.android - Resources.GetIdentifier() returning 0 for layout (Android)

Question

I'm attempting to get the int resource id for a layout resource by name, using Resources.GetIdentifier() of the Android API, but it returns 0. I'm using c#/monodroid/Xamarin, but regular java Android knowledge would apply too I suspect. Here's my code:

int resId = Resources.GetIdentifier(typeName, "layout", _activity.PackageName);

Where typeName = "FrmMain", and in my project I have the file "Resources/Layout/FrmMain.axml". Any ideas?

Answer 1

This is old, but for everyone getting this problem, I think it is because the resource name should be in lower case, so:

int resId = Resources.GetIdentifier("FrmMain", "layout", _activity.PackageName);

does not work, but:

int resId = Resources.GetIdentifier("frmmain", nameof(Resource.Layout).ToLower(), _activity.PackageName);

should work