Basic rules for tablet development for iPad Program Development

IPadProgram DevelopmentTablet onSending basic rules is the content to be introduced in this article,AppleReleased 10-inchTablet:IPad.IPadIt also uses the same operating system as the iPhone, and can also purchase software through the App Store. Did developers see a new market? If you wantIPadFor software development, see the followingIPadDevelop rules.

System Level

At the same time, only one program can be run, and the window is full screen

The program needs to enter and exit quickly

For security consideration, the program is executed in the sandbox. Saves Program-related files and settings. You can only use the interfaces provided by the system to communicate with other programs.

Each program runs in its own virtual memory space, but the available virtual memory is limited by the size of the physical memory. That is to say, there is no virtual memory on the disk.

Custom plug-ins and frameworks are not supported.

Program level

(New) The program interface must support any direction. Unlike the iPhone, horizontal and vertical screens are not required at the same time.

The program mainly uses ObjectiveC, but other programming languages can also use it.

All classes supported on the iPhone are also supported on the iPad

Memory use retain/release model management

The program can start additional threads as needed. However, view-based operations and a large number of graphic operations must be performed in the main program thread.

View Controller

Although the iPad still supports navigation bar and Tab bar, their role is gradually weakened. Because you can create a new view controller called the Split view controller ). For more complex data content, the navigation bar and Tab bar are mainly used to provide support for low-level navigation.

Graphics and multimedia

The iPad supports the same graphics and multi-media libraries as the iPhone. You can play a video in any view without having to play it in full screen.

Event Processing

It is easier to detect gesture events.

Support for device integration

Many features of the iPhone are supported in the iPad. For example:

Accelerator

Location

Map

Set

Address book

Peripherals

P2p Bluetooth connection

There is no camera in the iPad, but you can use the photo album.

Features of iPad

The screen size is different from that of the iPhone. The iPad is 1024x768.

New classes and interfaces:

Split views.

Pop-up window

You can customize the display style for covering the screen content, and set whether to completely overwrite the screen or overwrite a part of the window.

Toolbar can be placed above or below the view

You can customize the input view of a virtual keyboard, which is different from that of a keyboard that was only displayed in the input box on the iPhone. Now you can set a custom input view in any first responder object.

Custom input tools can also be placed on top of the virtual keyboard

Text and display support

Added the Core Text framework.

Custom view to receive keyboard messages

Added the syntax check class UITextChecker.

Supports custom editing menu class UIMenuController. Note: Previously, it can only be implemented through private APIs)

Added the CATextLayer class for Core Animation to display text.

Supports external display and projection

The iPad can be an external display with a maximum output resolution of 720p1280x720 ).

Document Processing support

Applications can register to open specific types of files

UIKit provides the UIDocumentInteractionController class for interacting with unknown files.

Programs with UIFileSharingEnabled values in Info. plist can share files with your desktop.

However, note that the iPhone OS does not provide a standard dialog box for opening and closing files, or does not encourage such system-level file operations.

PDF generation

The program can generate PDF documents.

Summary:IPadProgram DevelopmentTabletThe development of basic rules is complete. I hope this article will help you!