5COSC005W - Tutorial 7 Exercises

As part of this tutorial for this week, you should complete ALL the tasks described below: (make sure that you ask questions to your tutor for anything that you do not understand or if you are stuck at any point):

1. In this example you will be implementing an Android application which the user utilises to find and prepare coctails. The application will be using the https://www.thecocktaildb.com/api.php Web service.

   For all the tasks in this tutorial you should be creating threads for connecting to the internet using the following code (and not using the AsyncTask or AsyncTaskLoader classes):

   Thread t1 = new Thread(new Runnable()  {
       @Override
       public void run() {
           // ... statements updating the UI thread..
       }
       });
   t1.start();
   

   The update of the UI should be done by executing the following statement within a thread, sending effectively the execution of the block of code in the UI thread:

   runOnUiThread(new Runnable() {
       @Override
       public void run() {
           // ... statements updating the UI thread..
       }
   });
   

   Implement an application so that the user can search for the names of all coctails containing an ingredient, e.g. Vodka, by using the following url: https://www.thecocktaildb.com/api/json/v1/1/filter.php?i=Vodka

   The user should be see all the names of the coctails containg vodka.

2. Extend the application so that the user can enter the name of a coctail and receive the instructions for the preparation of the coctail. This should be done by displaying the content of the field strInstructions after a request to the https://www.thecocktaildb.com/api/json/v1/1/search.php?s=margarita url.
3. Extend the application so that the it displays a picture for the coctail (hint: this is the url corresponding to the strDrinkThumb or strImageSource keys of the JSON response in the last subquestion).
4. Extend your application so that the application allows the user to click on one of the names of the coctails in Question 1 (by using a Spinner widget) and then all of the relevant information for how to prepare it and the picture of the coctail appears.
5. Extend your application so that user presses a button and he/she is presented with the full details of a random coctail (including the name, the recipe and its picture). Hint: you need to study the API of the website to make the relevant requests.