Android How to Program, 3/e

7.1 Introduction

The WeatherViewer app (Fig. 7.1) uses the free OpenWeatherMap.org REST web services to obtain a specified city’s 16-day weather forecast. The app receives the weather data in JSON (JavaScript Object Notation) data format. The list of weather data is displayed in a ListView—a view that displays a scrollable list of items. In this app, you’ll use a custom list-item format to display:

Fig. 7.1 Weather Viewer app displaying the New York, NY, US weather forecast.

Figure 7.1 Full Alternative Text

• a weather-condition icon

• the day of the week with a text description of that day’s weather

• the day’s low and high temperatures (in °F), and ...