tailieunhanh - Lập trình iphone chuyên nghiệp part 3

Thực hiện giao diện Các chương trước khảo sát các tiêu chuẩn giao diện người dùng và các hướng dẫn mà bạn cần phải ghi nhớ là bạn thiết kế một ứng dụng hoạt động tốt trên iPhone và iPod touch. Với những nguyên tắc thiết kế trong tay, bạn đã sẵn sàng để áp dụng chúng như bạn phát triển và chương trình ứng dụng của bạn. | Implementing the Interface The previous chapter surveyed the UI standards and guidelines that you need to keep in mind as you design an application that works well on iPhone and iPod touch. With these design principles in hand you are ready to apply them as you develop and program your application. In order to demonstrate how to implement an iPhone interface I will walk you through a case study application I am calling iRealtor. The concept of iRealtor is to provide a mobile house-hunter application for potential buyers. The current pattern for Internet-based house hunting is to search MLS listings online print out individual listing addresses get directions and then travel to these houses. However with iRealtor all of those tasks can be done on the road with an iPhone-based application. The design goals of iRealtor are to provide a way for users to Browse and search the MLS listings of a local realtor. Get a map of an individual listing directly from its listing page. Access information about the realtor and easily contact the realtor using iPhone phone or mail services. Browse other helpful tools and tips. As you look at these overall objectives an edge-to-edge navigation design looks like an obvious choice given the task-based nature of the application. Joe Hewitt s iUI p iui will serve as the underlying framework for the user interface. iUI is designed to retrieve and format HTML fragments and automatically handle many application events such as phone rotation. The realtor information will be relatively static but the MLS listings will need to be database-driven. Therefore you will take advantage of the AJAX capabilities of iUI to seamlessly integrate listing data into the application. The initial version of iUI should be used only in iPhone and iPod touch-specific applications. It is not compatible with Internet Explorer Firefox and earlier versions of Safari for Mac. Chapter 3 Implementing the Interface Here s an overview of the technologies .