先说明，因为菜，所以不接受吐槽。
最近因为一些需求，所以会把一些swift代码写的界面修改成swiftUI，因为之前UIViewController可以继承，所以能做一些公共操作。但是工程目前所有界面都是隐藏了导航栏，并且使用的自定义的导航栏，而且会有一些界面间的公共主题设置。所以就考虑做一个UI基类。但是，View并不支持继承，所以最后就想了一个不是办法的办法，效果如下：
截屏2023-10-19 18.12.59.png
使用还是方便，可以根据自己的需要进行自定义的封装。
代码如下：
struct AAFBaseContainnerViewSwiftUI<Content> : View where Content : View {
typealias BodyContent = () -> Content
var body: Never
static func container(hideBar:Bool = false,title: String,leftHide: Bool = false,right: String = "",content: BodyContent?) -> some View {
return GeometryReader(content: { geometry in
VStack{
if hideBar == false {
VStack{
Rectangle().frame(height:statusHeight())
.foregroundColor(Color.clear)
HStack{
HStack {
if leftHide == false {
Image("icon_ty_fh")
.frame(width: 44,height: 44,alignment: .center)
} else {
Rectangle().foregroundColor(Color.clear)
.clipped()
.frame(width: 44,height: 44,alignment: .center)
}
Spacer()
}
Spacer()
HStack {
Text(title)
.font(17.medium)
}
Spacer()
HStack {
Spacer()
Text(right)
.font(15.regulare)
.padding(.trailing,12)
.frame(minWidth: 44)
.foregroundColor("#FEDB7F".c)
}
}
.foregroundColor(Color.white)
}
.frame(width: geometry.size.width,height: naviBarHeight())
}
if content != nil {
content!()
} else {
Rectangle().foregroundColor(.clear)
}
}
.frame(width: geometry.size.width,height: geometry.size.height,alignment: .top)
.background("#5774B7".c)
.edgesIgnoringSafeArea(.vertical)
})
.edgesIgnoringSafeArea(.all)
}
}
#Preview {
AAFBaseContainnerViewSwiftUI.container(title: "222",leftHide: false,right: "右边") {
///每个界面的各自内容
VStack(alignment: .center, spacing: 0, content: {
Text("界面的内容")
.foregroundColor(.white)
})
}
}
2.0 viewModifier版，写了几个界面感觉使用不是很顺畅，参考了之前看的斯坦福教程的demo，将其修改为2.0版
struct BaseViewModifier: ViewModifier {
@Environment(\.presentationMode) var presentationMode
var hideBar: Bool
var title: String
var leftHide: Bool
var right: String
var hideLine: Bool
var leftAction: ActionBlock?
var rightAction: ActionBlock?
// 隐藏导航
init() {
self.title = ""
self.hideBar = true
self.leftHide = false
self.right = ""
self.hideLine = false
}
// 常规情况，有左返回，有标题
init(title: String) {
self.title = title
self.hideBar = false
self.leftHide = false
self.right = ""
self.hideLine = false
}
// 登录页专用
init(isCheck: Bool, leftAction: ActionBlock?, rightAction: ActionBlock?) {
self.title = ""
self.hideBar = false
if isCheck {
self.leftHide = false
self.right = "去注册"
} else {
self.leftHide = true
self.right = ""
}
self.hideLine = true
self.leftAction = leftAction
}
func body(content: Content) -> some View {
GeometryReader(content: { geometry in
VStack {
if hideBar != true {
VStack {
Rectangle().frame(height: statusHeight())
.foregroundColor(Color.clear)
HStack {
HStack {
if leftHide == false {
Image("icon_ty_fh")
.frame(width: 44, height: 44, alignment: .center)
.onTapGesture {
if let block = leftAction {
block()
} else {
presentationMode.wrappedValue.dismiss()
}
}
} else {
Rectangle().foregroundColor(Color.clear)
.clipped()
.frame(width: 44, height: 44, alignment: .center)
}
Spacer()
}
Spacer()
HStack {
Text(title)
.font(17.medium)
}
Spacer()
HStack {
Spacer()
Text(right)
.font(15.regulare)
.padding(.trailing, 12)
.frame(minWidth: 44)
.foregroundColor("#FEDB7F".c)
.onTapGesture {
if let block = rightAction {
block()
}
}
}
}
.frame(height: naviBarHeight() - statusHeight() - 1)
.foregroundColor(Color.white)
Rectangle().frame(width: kScreenWidth, height: 1).foregroundColor("#6478D1".c.a(hideLine ? 0 : 0.4))
}
.frame(width: geometry.size.width, height: naviBarHeight())
}
content
.padding(.bottom, bottomSafeHeight())
.navigationBarHidden(true)
.navigationViewStyle(.stack)
}
.frame(width: geometry.size.width, height: geometry.size.height, alignment: .top)
.background(LinearGradient(colors: ["#384891".c, "#5E7EBF".c], startPoint: .top, endPoint: .bottom))
})
.edgesIgnoringSafeArea(.all)
}
}
extension View {
// 构建常规 左返回 + 标题
func baseNormal(title: String) -> some View {
self.modifier(BaseViewModifier(title: title))
}
// 隐藏导航
func baseNone() -> some View {
self.modifier(BaseViewModifier())
}
// 登录页专用
func baseLogin(isCheck: Bool,leftAction: ActionBlock?, rightAction: ActionBlock?) -> some View {
self.modifier(BaseViewModifier(isCheck: isCheck, leftAction: leftAction, rightAction: rightAction))
}
}
调用更加方便顺滑，侵入性更低，只需在最外层的界面调用即可
.baseNormal(title: "忘记密码")
