3.1. Android tutorial

发布时间 :2025-10-25 12:24:10 UTC      

image0

Android is an open source, Linux-based mobile device operating system, mainly used in mobile devices, such as smartphones and tablets. Android was developed by the Open Mobile Alliance, led by Google and other companies.

This tutorial will teach you basic Android programming and learn some advanced concepts related to Android application development.

3.1.1. Who is suitable for this tutorial?

This tutorial is for beginners to help them understand basic Android programming. After completing this tutorial, you will have a medium level of expertise in Android development, from which you can move on to the next stage of study.

3.1.2. What you need to know before reading this tutorial

Android programming is based on the Java programming language, so if you understand Java programming, it will help you better learn Android application development.

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.