From data to View

Learn the basic needs to turn your data into views on Android.
Learn Design patterns such as Adapter and use the AdapterViews in Android to your own good.
RecyclerView intro + Intermediate is also explained here.

Transcript

1. From Data to View 1
2. +Yossi Elkrief @elkriefy MaTriXy Android Group leader Tikal Knowledge Proud Father LFC fan GDG Beer Sheva co-founder & leader Author, Mentor, Lecturer & speaker Androids collector
4. https://upload.wikimedia.org/wikipedia/commons/thumb/8/8c/LastGraph_example.svg/2000px-LastGraph_example.svg.png
11. Model
12. Model • Java objects • Relations • Roles • Can’t view on screen
13. Design Pattern What is a Design Pattern ?
15. Software design pattern is a general reusable solution to a commonly occurring problem within a given context.
16. Types • Algorithm strategy patterns • Computational design patterns • Execution patterns • Implementation strategy patterns • Structural design patterns
17. Adapter Structural Design pattern
18. Client Only See Interface 1 Adapter Implements Target Interface 2 3 4
19. Many Adapters
20. AdapterView ViewGroups that display child views given to it by an adapter. An example of an AdapterView is a ListView (Old) / RecyclerView. Adapters provide the child views that display the data in the AdapterView. Adapters are responsible for supplying the data and creating the views representing each item.
21. AdapterViewHierarchy
23. StackView
24. Spinner AppCompatSpinner
25. ListView
26. GridView
27. HorizontalScrollView
28. ExpandableListView
29. ViewPager
30. ViewPager
31. RecyclerView Super
32. RecyclerView • More advanced and flexible version of ListView • Display large data sets very efficiently • Use when data can change at runtime.
33. Usage To use the RecyclerView widget you have to specify • an adapter • layout manager
34. Layout Managers built-in layout managers: • LinearLayoutManager shows items in a vertical or horizontal scrolling list • GridLayoutManager shows items in a grid • StaggeredGridLayoutManager shows items in a staggered grid
35. LinearLayoutManager
36. GridLayoutManager
37. StaggeredGridLayoutManager
39. Further knowledge • Creating List and Cards • RecyclerView Code Example