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In objectiveC given an NSArray fred containing strings I can say:

NSString *s = [fred ObjectAtIndex:5];

What is the c# equivalent? Rosetta stone says to use the method ValueAt but that returns an IntPtr.

var i = fred.ValueAt(5);

But then you are left with how to convert an IntPtr to NSString pointer.

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3 Answers 3

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6

Going via IntPtr feels like a bad idea. Instead, as long as you know the type of the item you want to get, you can just use the following:

int index = 0; NSString str = myNsArr.GetItem<NSString>(index);
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5

I've came to the same situation. You can convert that IntPtr to an NSString with new NSString(), like:

string strValue = new NSString(nsArr.ValueAt(1));

It's probably too late for you, but maybe it will help other people.

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I tried your suggestion but I get the error "'Foundation.NSNumber.NSNumber(System.IntPtr)' is inaccessible due to it's protection level". Upon checking the Xamarin's bindings for NSNumber, I can see that it is protected: protected internal NSNumber (IntPtr handle);
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string strValue = NSString.FromHandle(nsArr.ValueAt(1));
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While this code may answer the question, it would be better to include some context, explain how it works, and describe when to use it. Code-only answers are not useful in the long run.

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