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I am writing an application using Objective-C for iPhone.
In this application, the user, while entering a new record, needs to have a lookup capability (such as state, gender, phone type, etc). In C# i usually use a drop down combo or something like that to accomplish this task. What is the equivalent in Objective-C? Can someone show me a sample application?
Take a look at UIPickerView. It uses a spinning wheel to show a set of values that can be selected by the user. You need to create an object that adopts the UIPickerViewDelegate protocol to handle responding to what the user selects, and an object that adopts UIPickerViewDataSource protocol to populate the picker view.
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIPickerView_Class/Reference/UIPickerView.html