Question

我创建了一个列表，该列表可以通过以下方法删除行：.onDelete（执行：）。

List {
   ForEach(itemList.dataLocation) { item in
      NavigationLink(destination: ListDetails(name: item.nameDB)) {
           ListItem(name: item.nameDB)
      }
   }
   .onDelete(perform: delete)
   .onMove(perform: move)
}


func delete(at offsets: IndexSet) {
        itemList.dataLocation.remove(atOffsets: offsets)
        session.deleteData(id: //id row) //this problem
}

如何将已删除的字符串的值传递给函数？建议仍然从该行获取数据。预先感谢！

Answer 1

在删除功能中，偏移量是已删除项目的func delete(at offsets: IndexSet) { for index in offsets { session.deleteData(id: itemList.dataLocation[index].id) // problem solved } itemList.dataLocation.remove(atOffsets: offsets) }。通常它将是一个元素的集合。

 <div class="input-group">
                <div class="col-md-4 mb-3">
                    <label for="validationServer01">First name</label>
                    <input type="text" class="form-control is-valid" id="validationServer01" placeholder="First name" value="Mark" required />
                </div>

                <div class="custom-control custom-checkbox">
                    <input type="checkbox" class="custom-control-input" id="customCheck1" />
                    <label class="custom-control-label" for="customCheck1">Check this custom checkbox</label>
                </div>```



.question_box{
  border-collapse: collapse;
    box-sizing: border-box;
    display: table;
    height: 72px;
    margin-top: 10px;
    table-layout: fixed;
    width: 100%;
    background: rgb(255, 255, 255);
    border-width: 1px;
    border-style: solid;
    border-color: rgb(237, 237, 237);
    border-image: initial;
}


.jjyxsP {
  background-color: inherit;
  color: rgb(33, 102, 216);
  font-size: 18px;
  font-weight: 600;
  text-align: center;
  text-transform: uppercase;
  border-right: 1px solid rgb(237, 237, 237);
}

.kRyujs {
  box-sizing: border-box;
  display: table-cell;
  height: 100%;
  font-family: "Source Sans Pro", sans-serif;
  font-size: 14px;
  vertical-align: middle;
  width: 50px;
  overflow: hidden;
  padding: 10px;
}


.gpziHh {
  display: flex;
  flex-direction: row;
  -webkit-box-align: center;
  align-items: center;
}

.name{
  background: transparent;
  border: none;
  border-bottom: 1px solid #000000;
  outline:none;
  box-shadow:none;
}
 <div class="input-group">
                <div class="col-md-4 mb-3">
                    <label for="validationServer01">First name</label>
                    <input type="text" class="form-control is-valid" id="validationServer01" placeholder="First name" value="Mark" required />
                </div>

                <div class="custom-control custom-checkbox">
                    <input type="checkbox" class="custom-control-input" id="customCheck1" />
                    <label class="custom-control-label" for="customCheck1">Check this custom checkbox</label>
                </div>

SwiftUI，List，.onDelete（perform：）和Firestore

1 个答案: