How to check if a word is defined in the English dictionary in cocoa-touch?

Question

I am trying to make a crossword app for IOS but i Don't know that how to check if a string is valid english word or not.

How can i check it. Is there any API or online facility to check it. Thanks in Advance

Answer 1

Easy to do in iOS5 using the UIReferenceLibraryViewController class' +dictionaryHasDefinitionForTerm: method.

A UIReferenceLibraryViewController object provides a dictionary service to look up the definition of terms. You create and initialize a reference library view controller using the initWithTerm: method. You pass the term to define as the parameter to this method and the definition is displayed. You can present this view controller modally or as part of another interface. On iPad, you can set the reference library view controller as the content view controller of a UIPopoverController object. Optionally, use the dictionaryHasDefinitionForTerm: class method to check if a definition is available for a given term before creating an instance—for example, use this method if you want to change the user interface depending on whether a definition is available.