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Build a Weather App

Course Summary

In this course we will learn about a very common and important element of Android development: downloading data from the Internet! We will request weather forecast data from a free API provided by forecast.io. We will then parse that data (in JSON format) and display it in a single-page app. We will also see how to handle errors and situations when the network is unavailable.


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    Course Syllabus

    Exploring an API

    What is an API? What Does it Mean to Use One? This stage will introduce the project and explore an API provided by forecast.io. 7 steps
    • Introducing Stormy 2:05
    • Android Warm-Up 2 objectives
    • What is an API? What Does it Mean to Use One? 4:44
    • What is an API? 5 questions
    • The Forecast API 3:04
    • Creating the Project 3:11
    • Review: Forecast and Our Project 5 questions
    • Extra Credit Jump-Starting JSONWith your newly created Forecast account, log in and visit developer.forecast.io. Use your personalized URL and just paste it in your browser to explore the JSON. You can format it on a site like prettyjson or using a browser extension like JSONView. Get familiar with the data as we'll use it a lot in this and the subsequent project!

    Networking

    Even though we use the Web in lots of ways in our daily lives, communicating with the Web and interacting with the information we get is not a trivial task. Let's see how to make networking in Android easy with the help of a 3rd party library called OkHttp. 8 steps

    Concurrency and Error Handling

    Concurrency, or doing things together in parallel, is an important property of our system that let's us execute blocks of code simultaneously. In this stage, we take a look at what concurrency exactly means, why it's necessary, and how to make our networking call in a concurrent manner. We'll also learn how to gracefully handle any errors. 9 steps

    Working with JSON

    Our weather data is in the JSON format, which is a way of representing data in a simple-to-read manner that is easily parsed and used by programming languages. In this stage we will learn how to parse that data and store it in Java model objects that we can use in our app. 12 steps

    Building the Weather UI

    With all the pieces in place we can finally display our forecast data in an interface designed by one of our Treehouse designers. 8 steps

    Hooking Up the Model to the View

    Our last task is to wire up the data from our CurrentWeather model to our freshly implemented user interface. 9 steps


Course Fee:
USD 25

Course Type:

Self-Study

Course Status:

Active

Workload:

1 - 4 hours / week

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