forEach通过多个TextField验证SwiftUI中是否为空

您可以根据以下内容进行更新:

 @State var array = [String](repeating: "", count: 3)
 @State var array1 = [String](repeating: "", count: 1)
 @State var array2 = [String](repeating: "", count: 3)
 @State  var var1 = true
 @State  var var2 = true
 @State  var var3 = true


  var body: some View{
  VStack {
    HStack{ TextField("text0", text: $array[0])
            TextField("text0", text: $array[1])
            TextField("text0", text: $array[2])
    }.onReceive(array.publisher) { _ in

        self.var1 = self.array.allSatisfy{$0.isEmpty}
        self.check()
      }
    HStack{
       TextField("text1", text: $array1[0])
    }.onReceive(array1.publisher) { _ in

        self.var2 = self.array1.allSatisfy{$0.isEmpty}
        self.check()
      }
    HStack{
      TextField("text2", text: $array2[0])
      TextField("text2", text: $array2[1])
       TextField("text2", text: $array2[2])
    }.onReceive(array2.publisher) { _ in

        self.var3 = self.array2.allSatisfy{$0.isEmpty}
        self.check()
      }
   }
  }

 func check(){

    switch ( (var1 ? 1 : 0) | (var2 ? 2: 0) | (var3 ? 4:0)){
        case 0b001: print( "var1", var1)
        case 0b010: print( "var2", var2)
        case 0b100: print( "var3", var3)
        default: return
        }
    }

   }