9. Ios

  • 9.34. IOS Audio and Video (Audio & Video)

    9.34.1. Brief introduction ¶ Audio and video are quite common in the latest devices. Adding iosAVFoundation.framewo...
    2025-10-25 13:32:31 UTC
  • 9.35. IOS file processing

    9.35.1. Brief introduction ¶ File processing can not be explained intuitively through the application, we can underst...
    2025-10-25 13:32:34 UTC
  • 9.36. IOS map development

    9.36.1. Brief introduction ¶ IOS maps help us locate locations, and IOS maps use the MapKit framework. 9.36.2. ...
    2025-10-25 13:32:33 UTC
  • 9.37. In-app purchase of IOS

    9.37.1. Brief introduction ¶ In-application purchases are used by the application to purchase additional content or u...
    2025-10-25 13:32:34 UTC
  • 9.38. IOS iAD integration

    9.38.1. Brief introduction ¶ IAD is an advertising platform launched by Apple that helps developers generate revenue ...
    2025-10-25 13:32:34 UTC
  • 9.39. IOS GameKit

    9.39.1. Brief introduction ¶ GameKit is a commonly used framework in iOS SDK. It has three core functions: Intera...
    2025-10-25 13:32:31 UTC
  • 9.40. IOS storyboard (Storyboards)

    9.40.1. Brief introduction ¶ Storyboards is only introduced in iOS5, and when we use Storyboards, the deployment targ...
    2025-10-25 13:32:32 UTC
  • 9.41. IOS automatic layout

    9.41.1. Brief introduction ¶ Automatic layout is introduced in iOS 6.0. only IOS6.0 and later versions are supported....
    2025-10-25 13:32:33 UTC
  • 9.42. IOS-Twitter and Facebook

    9.42.1. Brief introduction ¶ Twitter has been integrated into iOS5.0, while Facebook has been integrated into iOS 6.0...
    2025-10-25 13:32:34 UTC
  • 9.43. IOS memory management

    9.43.1. Brief introduction ¶ The basic idea of memory management under iOS is reference counting, which controls the ...
    2025-10-25 13:32:30 UTC
  • 9.44. IOS application debugging

    9.44.1. Brief introduction ¶ When we do an application, we may make all kinds of mistakes, which can lead to all kind...
    2025-10-25 13:32:32 UTC

Principles, Technologies, and Methods of Geographic Information Systems

 102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.