Swiftui 在TabView（PageTabViewStyle）中获取当前索引
我无法添加gif。我上传了YouTube。链接 当Tabview滑动时，我想在下面的imageView中显示该图像 注意：当我在模型上尝试时，我的代码不起作用。这就是我编辑我的问题的原因 MainViewSwiftui 在TabView（PageTabViewStyle）中获取当前索引,swiftui,tabview,pagetabviewstyle,Swiftui,Tabview,Pagetabviewstyle,我无法添加gif。我上传了YouTube。链接 当Tabview滑动时，我想在下面的imageView中显示该图像 注意：当我在模型上尝试时，我的代码不起作用。这就是我编辑我的问题的原因 MainView struct MainView: View { @State var selected: Movie = Movie(title: "", description: "", poster: "", thumbImage: []
struct MainView: View {
@State var selected: Movie = Movie(title: "", description: "", poster: "", thumbImage: [], video: "", positiveRate: 0, negativeRate: 0)
var body: some View {
ZStack {
Image(selected.poster)
.resizable()
.overlay(Blur().edgesIgnoringSafeArea(.all))
VStack {
TabView(selection: $selected) {
ForEach(movieList, id: \.id) { item in
MovieCell(movie: item)
}
}
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
.indexViewStyle(PageIndexViewStyle(backgroundDisplayMode: .always))
}
}
}
}
struct Movie: Identifiable, Hashable {
var id = UUID()
var title: String
var description: String
var poster: String
var thumbImage: [String]
var video: String
var positiveRate: Int
var negativeRate: Int
}
let movieList = [
Movie(title: "Minyonlar 2", description: "In the heart of the 1970s, amidst a flurry of feathered hair and flared jeans, Gru (Steve Carell) is growing up in the suburbs. A fanboy of a supervillain supergroup known as the Vicious 6, Gru hatches a plan to become evil enough to join them. Luckily, he gets some mayhem-making back-up from his loyal followers, the Minions. Together, Kevin, Stuart, Bob, and Otto - a new Minion sporting braces and a desperate need to please - deploy their skills as they and Gru build their first lair, experiment with their first weapons, and pull off their first missions. When the Vicious 6 oust their leader, legendary fighter Wild Knuckles (Alan Arkin), Gru interviews to become their newest member. It doesn't go well (to say the least), and only gets worse after Gru outsmarts them and suddenly finds himself the mortal enemy of the apex of evil. On the run, Gru will turn to an unlikely source for guidance, Wild Knuckles, and discover that even bad guys need a little help from their friends. Written by Universal Pictures", poster: "2", thumbImage: ["minions/m1","minions/m2","minions/m3"], video: Bundle.main.path(forResource: "minyonlar", ofType: "mp4")!, positiveRate: 150, negativeRate: 5, categoryType: .animation),
Movie(title: "Hiçkimse", description: "Emmy winner Bob Odenkirk (Better Call Saul, The Post, Nebraska) stars as Hutch Mansell, an underestimated and overlooked dad and husband, taking life's indignities on the chin and never pushing back. A nobody. When two thieves break into his suburban home one night, Hutch declines to defend himself or his family, hoping to prevent serious violence. His teenage son, Blake (Gage Munroe, The Shack), is disappointed in him and his wife, Becca (Connie Nielsen, Wonder Woman), seems to pull only further away. The aftermath of the incident strikes a match to Hutch's long-simmering rage, triggering dormant instincts and propelling him on a brutal path that will surface dark secrets and lethal skills. In a barrage of fists, gunfire and squealing tires, Hutch must save his family from a dangerous adversary (famed Russian actor Aleksey Serebryakov, Amazon's McMafia)-and ensure that he will never be underestimated as a nobody again. Written by Universal Pictures", poster: "1", thumbImage: ["hickimse/h1","hickimse/h2","hickimse/h3"], video: Bundle.main.path(forResource: "hickimse", ofType: "mp4")!, positiveRate: 100, negativeRate: 250, categoryType: .action),
Movie(title: "Six Minutes of Midnight", description: "Summer 1939. Influential families in Nazi Germany have sent their daughters to a finishing school in an English seaside town to learn the language and be ambassadors for a future looking National Socialist. A teacher there sees what is coming and is trying to raise the alarm. But the authorities believe he is the problem. Written by Andy Evans", poster: "3", thumbImage: ["sixminutes/s1"], video: Bundle.main.path(forResource: "sixMinutes", ofType: "mp4")!, positiveRate: 80, negativeRate: 60, categoryType: .war)
]
只需在图像中指定选择，如
Image(selected) // << here !1
.resizable()
.frame(width: 150, height: 200)
Image（selected）//您需要将标记添加到选项卡项中。请注意，这些标记的类型必须是Movie
——与所选属性的类型相同
struct MainView: View {
@State var selected: Movie = movieList[0] // set the selection to the first item
var body: some View {
ZStack {
Image(selected.poster)
.resizable()
.overlay(Blur().edgesIgnoringSafeArea(.all))
VStack {
TabView(selection: $selected) {
ForEach(movieList, id: \.id) { item in
MovieCell(movie: item)
.tag(item) // `tag` items here
}
}
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
.indexViewStyle(PageIndexViewStyle(backgroundDisplayMode: .always))
}
}
}
}
更改代码以使用索引而不是对象
struct MainView: View {
@State var selectedIdx: Int = 0
var body: some View {
ZStack {
Image(movieList[selectedIdx].poster)
.resizable()
//.overlay(Blur().edgesIgnoringSafeArea(.all)) //Code not provided
VStack {
TabView(selection: $selectedIdx) {
ForEach(0..<movieList.count, id: \.self) { idx in
Text(movieList[idx].title).tag(idx)//Don't forget this
}
}
.tabViewStyle(PageTabViewStyle(indexDisplayMode: .never))
.indexViewStyle(PageIndexViewStyle(backgroundDisplayMode: .always))
}
}
}
}
struct MainView:View{
@状态变量selectedx:Int=0
var body：一些观点{
ZStack{
图像（电影列表[SelectedDX]。海报）
.可调整大小（）
//.overlay（Blur（）.edgesIgnoringSafeArea（.all））//未提供代码
VStack{
选项卡视图（选择：$selectedx）{
ForEach（0..我编辑了我的问题，先生。你能检查一下吗？