Flutter learning (four) basic components of Flutter

table of Contents

• What is a Widget
• Material App
• Common basic components

Widget

What is a widget

Widget Category

Widget in the state

state Lifecycle

The association between the Widget Tree, ElementTree and RenderObject Tree

widget key

Material App

Source material:

Common Components

Scaffold Scaffolding

Text

The Text box, as in the TextView Android
Text.rich
textfiled input box, as in Android EditText

Image

Picture resource statement

Icon

Use icon display iconfont

1. Import iconfont
   
2. Statement iconfont resource path
   
3. Font type declaration iconfont
   
4. Use iconfont statement