Hiển thị dữ liệu là tốt đẹp, nhưng bổ sung và chỉnh sửa thông tin là những gì làm cho một ứng dụng thực sự hum. DrinkMixer là rất tốt nó sử dụng một số tế bàotuỳ biến, và các công trình với các từ điển plist để hiển thị dữ liệu. Nó là một ứng dụng tham khảo tiện dụng, | 6 saving editing and sorting data Everyone s an editor. If these records were on an iPhone and I could edit them life would be grand Displaying data is nice but adding and editing information is what makes an app really hum. DrinkMixer is great it uses some cell customization and works with plist dictionaries to display data. It s a handy reference application and you ve got a good start on adding new drinks. Now it s time to give the user the ability to modify the data saving editing and sorting to make it more useful for everyone. In this chapter we ll take a look at editing patterns in iPhone apps and how to guide users with the nav controller. this is a new chapter 239 sam s new drink Sam is ready to add a A ew drink at the Lounge. Red-Headed School Girl. Sam went to try DrinkMixer with the new add view and ran into problems right away. Sam was elitking around ready to add his new drink. We have a problem with our view since we can t get to some of the fields. The directions iield is hidden under the keyboard- 240 Chapter 6 .but the keyboard is in the way We re back to the keyboard problem we saw earlier with InstaTwit. When Sam taps on a control it gets focus becomes the first responder and asks iPhoneOS to show the keyboard. Generally that s a good thing. However. th 3 d. li. ear V e A saving editing and sorting data probfem ih h Twii where ihe er iouldh -t jet to the iohtrols -the keyboard. BRAIN How did we deal with the keyboard last time Will that work this time What do you want the view to do when the keyboard appears you are here 4 .
