NLP, Algorithms, Machine Learning, Data Science, tutorials, tips and more
OpenCV is an open source library which provides a wide range of machine learning and computer vision algorithms. OpenCV original library is written in C++ but there are wrappers for other major programming languages, including Java (for android).
Since I use OpenCV quite often, I decided to dedicate a separate post and write a tutorial on how to add the library to an existing android application, developed in android studio.
Loading a single bitmap image into your android app is straightforward. However, on most cases you need to load many images at once into your UI view, this can damage your app responsiveness and downgrade your overall look and feel.
This post walks you through Google’s best practice for using a memory and disk caching to improve the responsiveness and fluidity of your UI when loading multiple images.
One of the best Material Design’s component is the Collapsing Toolbar. Many android apps use this concept as it brings simplicity, elegance and beauty to the screen. Using images is a great practice in general, mobile screens are much smaller so less images can fit in. Showing an image as the main header and collapsing it when the user scrolls, allows us to show more above the fold content in less space.
Making long story short, this is the final result…
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Most android apps require saving information between client sessions. We would want to save each type of data according to its purpose and when we’re going to use it. Android platform provides several methods to handle your data and persisting it.
In the previous tutorials, I showed how to create Material Design android applications. Those applications were mostly UI based and didn’t really did an intensive background work. Switching views and showing some web service results is a trivial task which can be handled by the phone CPU easily. But what if we want to analyze our data before we serve it to our users? well, in that case, we would probably want to add some backend services to do all the hard work.
This tutorial shows how to add a Backend layer to your Android application and send/receive data from it