Mobile Dev NJ Meetup - Top 5 Android Libraries You Should Use

Presentation given at the June 2015 Mobile Dev NJ Meetup Group describing what I consider to be the top 5 most useful Android libraries.

Transcript

1. 5 Android Libraries You Should Use Innovimobile - Erik Kamp
2. Application architecture Web requests Error handling Parsers User Interface components Typical Application Needs
3. OKHTTP What its used for : REST Network requests and management. Why should I use it : Provides a simple, clean, efficient way to manage and request data from a server in Java and Android . Automatically puts the request on a separate thread.
4. OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url(url) .build(); Response response = client.newCall(request).enqueue(); How to Use it
5. try { HttpClient httpclient = new DefaultHttpClient(); HttpResponse response = httpclient.execute(new HttpGet(URL)); StatusLine statusLine = response.getStatusLine(); if(statusLine.getStatusCode() == HttpStatus.SC_OK){ ByteArrayOutputStream out = new ByteArrayOutputStream(); response.getEntity().writeTo(out); String responseString = out.toString(); //Handle exception … Without It
6. OTTO What its used for : An event bus used to allow decoupled parts of your application to communicate Why should I use it : Significantly cuts down on boilerplate code and allows for elegant MVC or MVVC architecture to be used.
7. How to Use it Bus applicationBus = new Bus(ThreadEnforcer.ANY); applicationBus.register(this); applicationBus.post(new OttoEvent()); @Subscribe public void onEventReceived(OttoEvent ottoEvent) { //Do something with your event }
8. Picasso What its used for : Hassle free image loading and resizing. Why should I use it : Cuts down on image loading and resizing code, eliminates the need for complex memory and image sizing calculations.
9. How to Use it Picasso.with(context) .load(“http://i.imgur.com/DvpvklR.png”) .into(imageView);
10. ViewPagerIndicator What its used for : Displays an indicator below a ViewPager showing the user the current view within a ViewPager they are on. Why should I use it : Provides a clear indication to the user that there are additional views within a ViewPager
11. How to Use it TitlePageIndicator titleIndicator = (TitlePageIndicator)findViewById(R.id.titles); titleIndicator.setViewPager(pager);
12. GSON What its used for : Converting native Java objects into their String JSON representation and vice versa Why should I use it : Optimal for quick server response to Java object conversion and vice versa
13. How to Use it Gson gson = new GsonBuilder().create(); Writer writer = new OutputStreamWriter(new FileOutputStream("Output.json") , "UTF-8") gson.toJson("Picasso", writer); Reader reader = new InputStreamReader(JsonToJava.class.getResourceAs Stream("/Server1.json"), "UTF-8"); Artist artist = gson.fromJson(reader, Artist.class);
14. Questions