VSYNC is the event posted periodically by the kernal at fixed interval where the input handling, Animation and Window drawing happening synchroniiously at the same VSYNC interval. Below have given the detail explanation about the VSYNC event before VSYNC is introduced and after VSYNC is introduced.
Aspect-oriented programming entails breaking down program logic into “concerns” (cohesive areas of functionality). This means, that with AOP, we can add executable blocks to some source code without explicitly changing it. This programming paradigm pretends that “cross-cutting concerns” (the logic needed at many places, without a single class where to implement them) should be implemented once and injected it many times into those places.
Code injection becomes a very important part of AOP: it is useful for dealing with the mentioned “concerns” that cut across the whole application, such as logging or performance monitoring, and, using it in this way, should not be something used rarely as you might think, quite the contrary; every programmer will come into a situation where this ability of injecting code, could prevent a lot of pain and frustration.
AOP is a paradigm that has been with us for many years, and I found it very useful to apply it to Android. After some investigation I consider that we can get a lot of advantages and very useful stuff when making use of it.
Annotations by themselves are really powerful. They give direct control over when an aspect should be run to the developer. Adding element-value pairs makes the already powerful annotations even more powerful, since it enables you to pass information into the aspect.
Using annotations is more convenient than using patterns. While patterns might be anything between a big cannon and a scalpel the annotations are definitely a scalpel, by only getting the pointcuts that the developer has manually specified.
You can get the code for this blog series at the Git repository here.
Going through all the different ways of defining pointcuts and explaining them in an easy manner would be a near impossible feat for this post. Rather than aiming for the impossible let’s narrow down the scope, and talk about the most commonly used pointcut definitions and how we can experiment with them. We will get you started with defining your own pointcuts!
You can get the code for this blog series at the Git repository here.