Fragments: What are they good for?

Fragments: What are they good for? Talk given at 360AnDev 2016 on July 28th, 2016
#360andev

Transcript

1. Fragments: WHAT ARE THEY GOOD FOR?
4. Overview u Why Fragments? u Different types u Anatomy u Lifecycle u How to use u Common Usage u Best Practices
7. Types of Fragments
10. Static Fragment Example
11. Dynamic Fragments
12. Dynamic Fragment u Require Container u Framework u Support
13. Framework Fragments
14. Support Fragments
16. Fragment Lifecycle
21. onAttach ( )
22. onAttach( ) Example
23. onCreateView ( )
24. onCreateView( ) Example
25. onCreateView( ) Fixes u View – Hold Parameters u Inflater – Add Layout u View Container – Collection for Views u Bundle –Reconstructs Fragment
26. onActivityCreated( )
27. onActivityCreated( ) Example
28. Standard Lifecycle ( )’s u onStart( ) u onResume( ) u onPause( )
29. onDestroyView ( )
30. onDestroyView( ) Example
31. onDetach ( )
32. onDetach( ) Example
33. newInstance( ) u Set up Fragment u Default Data u Bundle u SetArgs( ) u GetArgs( )
34. New Instance( ) Example
35. How to Use
37. Fragment Manager u Manages Fragments in Activity u Holds list of Fragments u Perform Transactions u Fluent Interface
38. Fragment Manager Example
39. Fragment ID
40. Fragment TAG
41. Identifying a Fragment u findFragmentById ( ) – Container ID u findFragmentByTag( ) – String Constant
42. Fragment Transaction
43. Parts of a Transaction beginTransaction( ) Action commit( )
44. Basic Add, ID Example
45. Common Usage u Tablet u Tab Layout u Dialog Fragment
46. Tablet
47. Master Detail Flow
48. Fragments in Tablet u Dual Pane condition – Use Boolean u Resource Qualifier
49. Resource Qualifier
50. Resource Qualifier u Change Configuration u Screen Width u 600 DPI – Tablet
51. Resource Qualifier Example
52. Tablet Example
53. Tab Layout
54. Tab Layout u Design Support Library u Fixed Tabs – Most Common
55. View Pager
56. View Pager u Flip through pages u Support v4
57. Pager Adapter: 2 types
58. Fragment Pager Adapter
59. Fragment State Pager Adapter
60. Pager Adapter u getCount( ) – Number of Fragments u getItem( ) – Position of Fragments u Fragment Pager Adapter u Fragment State Pager Adapter
61. Tab Layout & View Pager
62. Dialog Fragment
63. Dialog Fragment
64. Dialog Fragment u Restores AlertDialog u onCreateView( ) u onCreateDialog( )
65. onCreateDialog( ) Example
66. Dialog Fragment Ex.
67. Odds and Ends u Navigation Drawer u Child Fragments u Headless Fragments
70. Child Fragments
71. Headless Fragments
72. Best Practices u 3 – Fragments Activities u 5 – Fragments Tab Layouts u Use Interfaces with Activities u Create early
76. Thank you @HopeDeveloper
78. Questions?