Beginning iOS 4 Application Development
6. Keyboard inputs
whAt yOu will leArn in thiS chApter
How to customize the keyboard for diff erent types of inputs
How to hide the keyboard when you are done typing
How to detect when a keyboard is visible or not
How to use ScrollView to contain other views
How to shift views to make way for the keyboard
One of the controversial aspects of the iPhone is the multi-touch keyboard that enables users
to input data into their iPhone. Critics of the iPhone have criticized its lack of a physical key-
board for data entry, whereas ardent supporters of virtual keyboards swear by its ease of use.
What makes the iPhone keyboard so powerful is its intelligence in tracking what you type,
followed by suggestions for the word you are typing, and automatically correcting the spelling
and inserting punctuation for you. What’s more, the keyboard knows when to appear at the
right time — it appears when you tap a Text Field view, and it goes away automatically when
you tap a non-input view. You can also input data in different languages.
For iPhone application programmers, the key concern is how to integrate the keyboard into the
application. How do you make the keyboard go away naturally when it is no longer needed?
And how do you ensure that the view the user is currently interacting with is not blocked by the
keyboard? In this chapter, you learn various ways to deal with the keyboard programmatically.
iPad开发基础教程
9. 新的输入方法
iPhone_and_iPad_in_Action(iOS3.2 and iOS4)
19.1 Custom keyboard accessories
iphone sdk 3 programming advanced mobile development for apple iphone and ipod touch
16 Custom UI Components
16.1 Text Field Alert View
16.2 Table Alert View
16.3 Progress Alert View
