MVP Architecture in Android Development

Study Notes

The primary function of the presenter in the MVP architecture is to act as an intermediary between the view and the model, receiving input from the view, interacting with the model, and updating the view accordingly.

The main benefit of using the MVP architecture in Android development is the separation of concerns, allowing for easier testing, maintenance, and reuse of code.

The role of the model in the MVP architecture is to manage the data and business logic of the application, encapsulating the underlying data and providing methods for retrieving and manipulating it.

The main difference between the MVP and MVC architectures is the addition of a presenter in MVP, which retrieves data from the model and updates the view, whereas in MVC, the controller retrieves data from the model and updates the view.

The benefit of using a presenter in the MVP architecture is that it provides a single point of access for the view to interact with the model, allowing for a decoupling of the view and model, and making it easier to test and maintain the application.

Knyaz Askold (died 882) was a ruler of Kiev who led military campaigns against the Byzantine Empire in 860, 866, and 874.
On June 18, 860, Askold's fleet of 200 ships arrived at the walls of Constantinople, and the Byzantine Emperor was forced to agree to a treaty and pay tribute.
This event marked the first time the Kiev Principality announced its existence to the medieval world and began its struggle with the Byzantine Empire for dominance over the Black Sea.

Askold is associated with the first attempt to Christianize Rus'.
According to Byzantine sources, Askold baptized himself and attempted to convert his subjects in the 860s.
This is believed to have caused discontent among the pagan nobility, who began plotting against Askold.

In the 860s, the Ilmen Slavs and Krivichians invited the Varangian prince Rurik to rule over them.
According to Nestor the Chronicler, Rurik and his brothers Sineus and Truvor were invited to rule, but some historians believe that only Rurik was a real historical figure.
Rurik's death in 879 led to the succession of his young son Igor, who was cared for by the voivode Oleg.

In 882, Oleg gathered a large army and marched on Kiev, allegedly at the invitation of the local nobility who were dissatisfied with Askold's Christianization.
Oleg defeated and killed Askold, and then took power in Kiev, marking the end of the Kiev Principality and the beginning of the Rurik Dynasty.
This event led to the unification of the Eastern Slavic North and South and the transformation of the Kiev Principality into the ancient Rus' state, known as Kievan Rus'.