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Cornell lec03

lec 5

Fragment

Why fragment 1. reuse 2. reduce redundant

Lifecycle 1. tied to host activity

FragmentManager

FragmentTransactions - creating - launching - caching

group transaction

val fM = sFM;
fM.beginT
    .add(.., ..)
    .commit()
graph TD
B[F B] --> |setFR| F[FM]
F -->|request| A[F A]
A --> |setFRL| F
  • Botton Navigation View
  • TopBar

颜色主题调整

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