Nowadays, I feel that attacking is the best defence. Following Mr. Seo's order, Mr. Kim is making nofi app again. People may think that I am depressed. Well I dont know well. Anyway, I am struggling to learn something. Let me write things that I learned.
1. most service objects provides as singleton. Its not unusual. By the way, we should call create method after declaring instance. Then, it makes necessary resources. And you should call destroy method when its useless. It removes all resources. In fact, singleton, deleting instance feature may not be considered.
2. I saw frame transition manager. In other words, I could see the api structures. Its input was windows or images which are the left and right frame o the current one. And when you invoke touch events such as dragging, it shows transition paging effect and callback function is called where you can define the next showing view.
3.