Question

我正在尝试使用具有3个字段的UIPickerView查询Firestore，但未显示任何内容。如果我注释掉两个字段并运行查询，我会得到结果。任何想法，我想念或做错了什么。请帮忙。

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
 if hospNameField.isFirstResponder {
     let itemselected = hospt[row]
     hospNameField.text = itemselected
 } else if teamNameField.isFirstResponder {
     let itemselected = team[row]
     teamNameField.text = itemselected
 } else if mdNameField.isFirstResponder {
     let itemselected = assignedmd[row]
     mdNameField.text = itemselected
 }

}

 @IBAction func getData(_ sender: Any) {
 if HOSP != (hospNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("hosp", isEqualTo: (hospNameField.text!))
 } else if TEAM != (teamNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("team", isEqualTo: (teamNameField.text!))
 } else if ASSIGNEDMD != (mdNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("assignedmd", isEqualTo: (mdNameField.text!))
     query.getDocuments { (snapshot, error) in
         if let err = error {
             debugPrint("error getting data: \(err)")
         } else {
             for document in (snapshot?.documents)! {
                 print(document.data())
             }

Answer 1

我认为您缺少括号。如果运行查询，则仅执行第三个if语句。应关闭最后一个else if，然后运行查询。

尝试一下：

   @IBAction func getData(_ sender: Any) {
 if HOSP != (hospNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("hosp", isEqualTo: (hospNameField.text!))
 } else if TEAM != (teamNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("team", isEqualTo: (teamNameField.text!))
 } else if ASSIGNEDMD != (mdNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("assignedmd", isEqualTo: (mdNameField.text!))
}
     query.getDocuments { (snapshot, error) in
         if let err = error {
             debugPrint("error getting data: \(err)")
         } else {
             for document in (snapshot?.documents)! {
                 print(document.data())
             }
           }
       }
}

我无法使用具有3个选项的UIPickerView查询Firestore

1 个答案: