有人可以解决这种情况下仅显示今天输入日期数据的代码。我将代码的详细信息放在下面（请阅读指南的注释），也许问题出在获取请求以及我要显示数据的每个内部滚动视图的上。如果需要任何细节，请让我知道
获取请求
@FetchRequest(
entity: ExpenseLog.entity(),
sortDescriptors: [
NSSortDescriptor(keyPath: \ExpenseLog.date, ascending: false)
]
,predicate: NSPredicate(value: Calendar.current.isDateInToday(Date()))
) //here i dont know what to put to show the today inputted data
private var result: FetchedResults<ExpenseLog>
对于每个人
if self.result.count == 0
{
DaftarTransaksiEmpty()
}
else
{
VStack
{
// i want to put list of the only today inputted data here
ForEach(self.result)
{
(log: ExpenseLog) in
ZStack{
HStack(spacing: 16) {
CategoryImageView(category: log.categoryEnum)
VStack(alignment: .leading, spacing: 8) {
Text(log.nameText).font(.headline)
Text(log.dateText).font(.subheadline)
}
Spacer()
Text(log.amountText).font(.headline)
} .padding(.vertical, 8) .padding(.horizontal,4)
}
}
}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 1, green: 1, blue: 1, alpha: 1))).edgesIgnoringSafeArea(.all))
}
HomeView（）（完整代码）
@Environment(\.managedObjectContext) var moc
@FetchRequest(entity: Profile.entity(), sortDescriptors: [NSSortDescriptor(keyPath: \Profile.namaUser, ascending: true),
NSSortDescriptor(keyPath: \Profile.limitHarian, ascending: true),
NSSortDescriptor(keyPath: \Profile.photo, ascending: true)
]
) var profiles : FetchedResults<Profile>
@State var photoUser : Data = .init(count: 0)
@Environment(\.managedObjectContext)
var context: NSManagedObjectContext
@FetchRequest(
entity: ExpenseLog.entity(),
sortDescriptors: [
NSSortDescriptor(keyPath: \ExpenseLog.date, ascending: false)
]
,predicate: NSPredicate(value: Calendar.current.isDateInToday(Date()))
) //here i dont know what to put to show the today inputted data
private var result: FetchedResults<ExpenseLog>
let hour = Calendar.current.component(.hour, from: Date())
@State var pengeluaranhariini = "250.000"
enum HomeSheet{
case Profile
case Add
}
@State var isSheet : Bool = false
@State var homeSheet : HomeSheet = .Profile
var body: some View {
GeometryReader { geometry in
VStack
{
HStack{
ZStack
{
Image("kotakcardgreeting") .resizable()
.frame(width: geometry.frame(in: .global).width, height: geometry.frame(in: .global).height/4)
.offset(y: -50)
HStack{
VStack(alignment: .leading){
Text("\(getGreeting()),")
.font(.system(size: 22))
.fontWeight(.semibold).foregroundColor(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1))) .padding(.top, 40)
ForEach(self.profiles, id: \.self)
{ profilNama in
Text("\(profilNama.namaUser ?? "")")
.font(.system(size: 22))
.fontWeight(.semibold).foregroundColor(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1))) .padding(.top, 1)
}
Text("Jangan lupa catat pengeluaranmu hari ini")
.font(.system(size: 17)).fontWeight(.semibold).foregroundColor(.white)
.padding(.top, 10)
}.padding()
Spacer()
ForEach(self.profiles, id: \.self)
{ profilPhoto in
VStack{
Image(uiImage: UIImage(data: profilPhoto.photo ?? self.photoUser)!).resizable().frame(width: 55, height: 55).scaledToFit().overlay(Circle().stroke(Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1)), lineWidth: 5)).clipShape(Ellipse()).shadow(color: Color.init(#colorLiteral(red: 1, green: 0.888686657, blue: 0.7034975886, alpha: 1)), radius: 5).onTapGesture {
}.padding()
}
}
}.offset(y: -60)
Image("bigaddbutton") .resizable()
.aspectRatio(contentMode: .fit)
.frame(width: geometry.frame(in: .global).width/4, height: geometry.frame(in: .global).height/8) .onTapGesture {
self.isSheet = true
self.homeSheet = HomeSheet.Add
}
.padding(.top, 100)
}
}
Spacer()
HStack {
ZStack {
Image("cardstatus") .resizable()
.aspectRatio(contentMode: .fit)
.frame(width: geometry.frame(in: .global).width, height: geometry.frame(in: .global).height/4)
HStack
{
Spacer()
if self.result.count == 0
{
Text(" ")
}
else
{
Text("Rp \(self.pengeluaranhariini),00.")
.font(.system(size: 20))
.fontWeight(.bold).foregroundColor(.white) .multilineTextAlignment(.trailing) .padding(.top, 40)
}
Spacer()
if self.profiles.count == 0
{
Text(" ")
}
else
{
ForEach(self.profiles, id: \.self)
{ profilLimit in
Text(("Rp \(profilLimit.limitHarian ?? ""),00."))
.font(.system(size: 20)).fontWeight(.bold) .foregroundColor(.white) .multilineTextAlignment(.trailing)
.padding(.top, 40)
}
}
Spacer()
}
}
}
Spacer()
HStack
{
Text("Daftar Pengeluaran Hari Ini")
.font(.system(size: 17)).fontWeight(.bold).foregroundColor(Color.init(#colorLiteral(red: 0, green: 0, blue: 0, alpha: 1))) .multilineTextAlignment(.leading)
Spacer()
Button(action: {
self.isSheet = true
self.homeSheet = HomeSheet.Add
}) {
Text("Tambah")
.font(.system(size: 17)).fontWeight(.bold).foregroundColor(Color.init(#colorLiteral(red: 0.1489486992, green: 0.390168488, blue: 0.555157125, alpha: 1))) .multilineTextAlignment(.leading)
}
}.padding(.horizontal)
ScrollView
{
if self.result.count == 0
{
DaftarTransaksiEmpty()
}
else
{
VStack
{
// i want to put list of the only today inputted data here
ForEach(self.result)
{
(log: ExpenseLog) in
ZStack{
HStack(spacing: 16) {
CategoryImageView(category: log.categoryEnum)
VStack(alignment: .leading, spacing: 8) {
Text(log.nameText).font(.headline)
Text(log.dateText).font(.subheadline)
}
Spacer()
Text(log.amountText).font(.headline)
} .padding(.vertical, 8) .padding(.horizontal,4)
}
}
}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 1, green: 1, blue: 1, alpha: 1))).edgesIgnoringSafeArea(.all))
}
}
}.background(Rectangle().foregroundColor(Color.init(#colorLiteral(red: 0.8039215803, green: 0.8039215803, blue: 0.8039215803, alpha: 1))).edgesIgnoringSafeArea(.all))
.sheet(isPresented: self.$isSheet) {
if self.homeSheet == HomeSheet.Profile{
ProfileFilled().environment(\.managedObjectContext, self.moc)
}
else if self.homeSheet == HomeSheet.Add{
LogFormView(context: self.context)
}
}
}
}
这是我的ExpenseLog数据模型
答案 0 :(得分：0)
您可以在提取请求中使用谓词来过滤日期。像这样
@FetchRequest(entity: Profile.entity(), sortDescriptors: [NSSortDescriptor(keyPath: \Profile.namaUser, ascending: true),
NSSortDescriptor(keyPath: \Profile.limitHarian, ascending: true),
NSSortDescriptor(keyPath: \Profile.photo, ascending: true)
], predicate: NSPredicate(format: "date == %@", Date())) var profiles : FetchedResults<Profile>
答案 1 :(得分：0)
这个很好用。我将谓词格式化为“date <= %@ AND date >= %@”，这给了我今天的事件。
struct Today: View {
@Environment(\.managedObjectContext) private var viewContext
@FetchRequest var reminder: FetchedResults<CDReminder>
init(){
var calendar = Calendar.current
calendar.timeZone = NSTimeZone.local
let dateFrom = calendar.startOfDay(for: Date()) // eg. 2016-10-10 00:00:00
let dateTo = calendar.date(byAdding: .day, value: 1, to: dateFrom)
let predicate = NSPredicate(format : "date <= %@ AND date >= %@", dateTo! as CVarArg, dateFrom as CVarArg)
self._reminder = FetchRequest(
entity: CDReminder.entity(),
sortDescriptors: [NSSortDescriptor(keyPath: \CDReminder.date, ascending: false)],
predicate: predicate)
}