Here we will go through a summarize for the next chapter in the ‘ Head First Pattern ‘. Don’t forget to check this article for chapter 1.

This chapter about one of the most famous design patterns, the Observer Pattern.

We will go through the Weather Monitoring application to discover this new pattern.

In this app, there are three players, the weather station (the physical device that gain the actual weather data), the WeatherData object (follows the data from the Weather Station and updates the displays), and the display that views users the current weather conditions.

Okay, The app task…

Mai Waleed Abu Ajamieh

Android Engineer at Upwork

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