Android Platform Cloud computing application development detailed

In recent years, "cloud computing" concept is very hot, "cloud computing" the core is a large number of network resources to unify, to provide users with efficient and convenient software services. What "cloud" advocates want: http://www.aliyun.com/zixun/aggregation/6579.html "> Users use Software services that are as easy, anytime, and on demand as they are with electricity and water." In the "Cloud computing" Network application mode, users can access the "cloud" through various "end", "end" can be any electronic devices that can be connected to the Internet, "cloud" is the service provided, "cloud" may be huge, even into one, without Borders, may be small, isolated, in short, it is everywhere, can provide the various services that the user needs. The cloud application sample figure is shown in Figure 15-1.

▲ Figure 15-1 Cloud Application Example

Typical cloud application--Urban weather information Service

With the advent of the 3G network era, the speed of mobile network is greatly improved, which makes the demand of cloud and end application software become more and more big. "Cloud" must be "landed" in any case, that is, must have mobile terminal equipment and the corresponding software support.

There are many examples of "cloud" applications on the Android platform, such as Gmail (Figure 15-2), calendar, and Google Map pre-installed on Android.

This chapter introduces the application of cloud and end by a case study of weather information based on the Android system. The basic function of this chapter is to start the software into the initial screen, the initial screen shows the list of major cities in China, as shown in Figure 15-3.

▲ Figure 15-2 GMail

▲ Figure 15-3 Weather Query System interface

When the user touches one of the cities, a dialog box pops up, listing the weather information for the city and the next 4 days in the dialog, as shown in Figure 15-4.

▲ Figure 15-4 Weather information

▲ Figure 15-5 Demand case diagram

The requirement case diagram for this case is shown in Figure 15-5.

What technologies will be involved to implement this Android weather information query case?

(Responsible editor: The good of the Legacy)