Flutter基础widgets教程-BottomNavigationBar篇

BottomNavigationBar({
    Key key, 
    @required List<BottomNavigationBarItem> items, 
    ValueChanged<int> onTap, 
    int currentIndex: 0, 
    double elevation: 8.0, 
    BottomNavigationBarType type, 
    Color fixedColor, 
    Color backgroundColor, 
    double iconSize: 24.0, 
    Color selectedItemColor, 
    Color unselectedItemColor, 
    double selectedFontSize: 14.0, 
    double unselectedFontSize: 12.0, 
    bool showSelectedLabels: true, 
    bool showUnselectedLabels 
})

backgroundColor: Colors.white,

currentIndex:0,

elevation:8.0,

fixedColor:Colors.green,

iconSize: 24.0,

items: 
    BottomNavigationBarItem(
        icon: Icon(Icons.home),
        title: Text('首页'),
    ),
    BottomNavigationBarItem(
        icon: Icon(Icons.category),
        title: Text('分类'),
    ),
    BottomNavigationBarItem(
        icon: Icon(Icons.settings),
        title: Text('设置'),
    ),
,

selectedFontSize: 24.0,

selectedItemColor: Colors.green,

showSelectedLabels: true,

showUnselectedLabels: true,

unselectedFontSize: 12.0,

unselectedItemColor: Colors.green,