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Swift SwiftUI CoreData 过滤数据 2

news 2025/7/20 17:31:27

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Code

import SwiftUI
import CoreDatastruct HomeSearchView: View {@Environment(\.dismiss) var dismiss@State private var search_value = ""@FetchRequest(entity: Bill.entity(),sortDescriptors: [NSSortDescriptor(keyPath: \Bill.c_at, ascending: false)],predicate: nil,animation: .default)private var bills_filter: FetchedResults<Bill>private func SearchByNameOrSurname() {let predicate: NSPredicate?if !search_value.isEmpty {let namePredicate = NSPredicate(format: "name CONTAINS %@", search_value)let moneyyPredicate = NSPredicate(format: "money CONTAINS %@", search_value)predicate = NSCompoundPredicate(orPredicateWithSubpredicates: [namePredicate, moneyPredicate])} else {predicate = nil}bills_filter.nsPredicate = predicate}var body: some View {NavigationStack {VStack {HStack {HStack {Image(systemName: "magnifyingglass")TextField("分类、金额、备注", text: $search_value).onChange(of: search_value) { _ inSearchByNameOrSurname()}}Button {search_value = ""dismiss()} label: {Text("取消")}}List {Section(header: Text("匹配条数 \(bills_filter.count)")) {ForEach(bills_filter) { bill inHStack {Text(bill.emoji ?? "Unknown bill emoji")Text(bill.name ?? "Unknown bill name")Spacer()Text("\(bill.moneyy ?? 0.0)")}}}}}.navigationTitle("搜索").navigationBarTitleDisplayMode(.inline)}}
}struct HomeSearchView_Previews: PreviewProvider {static var previews: some View {HomeSearchView()}
}