Dart 未处理的异常：类型“动态=> 患者信息”不是“转换”的类型“字符串，动态=> MapEntry<动态，动态>”的子类型，

如何解决Dart 未处理的异常：类型“动态=> 患者信息”不是“转换”的类型“字符串，动态=> MapEntry<动态，动态>”的子类型，

大家早上好，我想就我遇到的以下错误寻求帮助，我已经研究过了，我做了一些尝试修复它的方法，但没有成功，所以我来到这里如果你能帮助我，请寻求你的帮助。

我想发送数据以便我可以在应用程序中使用它

从 api 获取方法

class GetPatientsInfo {
  static Future<List<PatientsInfo>> getPatients(authtoken,patientId) async {
    var patientsResponse;

    var response = await http.get(
      url + '/patients/$patientId',headers: {'Authorization': authtoken,'patientId': patientId},);

    var mapResponse = json.decode(response.body);

    if (response.statusCode == 200) {
      var response = List<PatientsInfo>.from(mapResponse.map((i) => PatientsInfo.fromJson(i)));
      return response;      
    } else if (response.statusCode == 401) {
      // response = null;
    }
    return patientsResponse;
  }
}

方法返回

{
        "addressCity": "city","addressZip": "00000","appointment_id": "328","connectedUsers": [
          {
            "info": {
              "picture": "https://weavers.space/img/default_user.jpg"
            },"user": {
              "appointment_id": "","degree": "MB.BS","id": "85","name": "Andrew Gerrard Hunger,MB.BS","phoneNumbers": [
                {
                  "number": "999-900-0909","title": "Office"
                },{
                  "number": "999-999-9999","title": "Cell"
                }
              ],"picture": "https://weavers.space/img/default_user.jpg","role": "physician","specialty": "Dermatology","visit_date": ""
            }
          },{
            "info": {
              "picture": "https://weavers.space/img/default_user.jpg"
            },"degree": "MD","id": "87","name": "Jacob Martin,MD","phoneNumbers": [
                {
                  "number": "355-698-9545","specialty": "Anesthesia","id": "99","name": "Mary Ann,"phoneNumbers": [
                {
                  "number": "344-678-8991",{
                  "number": "219-682-6327","visit_date": ""
            }
          }
        ],"dob": 1529366400000,"first_name": "Gunther","gender": "female","homeAddr1": "Address","homeAddr2": "Address2","id": "29","last_name": "Beards","medical_data_level": [
          0,0
        ],"medical_data_obj": [
          {
            "desc": "symptoms","id": 0,"level": 0
          },{
            "desc": "laboratory","id": 1,{
            "desc": "medicines","id": 2,{
            "desc": "vitals","id": 3,{
            "desc": "cardiomems","id": 4,{
            "desc": "images","id": 5,{
            "desc": "careguidelines","id": 6,{
            "desc": "fluidmetrics","id": 7,{
            "desc": "riskprofile","id": 8,{
            "desc": "performanceandutilization","id": 9,{
            "desc": "education","id": 10,"level": 0
          }
        ],"name": "Gunther Beards","notification_level": 0,"phoneNumbers": [
          {
            "number": "111-111-1111","title": "Cell"
          },{
            "number": "111-111-1112","title": "Home"
          }
        ],"remote_monitoring": "Y","role": "patient","state": "North Carolina","visit_date": "2021-01-13 09:30"
      }

模型

PatientsInfo patientsInfoFromJson(String str) => PatientsInfo.fromJson(json.decode(str));

String patientsInfoToJson(PatientsInfo data) => json.encode(data.toJson());


class PatientsInfo {
    PatientsInfo({
        this.addressCity,this.addressZip,this.appointmentId,this.connectedUsers,this.dob,this.firstName,this.gender,this.homeAddr1,this.homeAddr2,this.id,this.lastName,this.medicalDataLevel,this.medicalDataObj,this.name,this.notificationLevel,this.phoneNumbers,this.picture,this.remoteMonitoring,this.role,this.state,this.visitDate
    });

    String dictionary;
    String addressCity;
    String addressZip;
    String appointmentId;
    List<ConnectedUser> connectedUsers;
    int dob;
    String firstName;
    String gender;
    String homeAddr1;
    String homeAddr2;
    String id;
    String lastName;
    List<int> medicalDataLevel;
    List<MedicalDataObj> medicalDataObj;
    String name;
    int notificationLevel;
    List<PhoneNumber> phoneNumbers;
    String picture;
    String remoteMonitoring;
    String role;
    String state;
    String visitDate;

    factory PatientsInfo.fromJson(Map<String,dynamic> json) => PatientsInfo(
        addressCity: json["addressCity"],addressZip: json["addressZip"],appointmentId: json["appointment_id"],connectedUsers: List<ConnectedUser>.from(json["connectedUsers"].map((x) => ConnectedUser.fromJson(x))),dob: json["dob"],firstName: json["first_name"],gender: json["gender"],homeAddr1: json["homeAddr1"],homeAddr2: json["homeAddr2"],id: json["id"],lastName: json["last_name"],medicalDataLevel: List<int>.from(json["medical_data_level"].map((x) => x)),medicalDataObj: List<MedicalDataObj>.from(json["medical_data_obj"].map((x) => MedicalDataObj.fromJson(x))),name: json["name"],notificationLevel: json["notification_level"],phoneNumbers: List<PhoneNumber>.from(json["phoneNumbers"].map((x) => PhoneNumber.fromJson(x))),picture: json["picture"],remoteMonitoring: json["remote_monitoring"],role: json["role"],state: json["state"],visitDate: json["visit_date"]
    );

    Map<String,dynamic> toJson() => {
        "addressCity": addressCity,"addressZip": addressZip,"appointment_id": appointmentId,"connectedUsers": List<dynamic>.from(connectedUsers.map((x) => x.toJson())),"dob": dob,"first_name": firstName,"gender": gender,"homeAddr1": homeAddr1,"homeAddr2": homeAddr2,"id": id,"last_name": lastName,"medical_data_level": List<dynamic>.from(medicalDataLevel.map((x) => x)),"medical_data_obj": List<dynamic>.from(medicalDataObj.map((x) => x.toJson())),"name": name,"notification_level": notificationLevel,"phoneNumbers": List<dynamic>.from(phoneNumbers.map((x) => x.toJson())),"picture": picture,"remote_monitoring": remoteMonitoring,"role": role,"state": state,"visit_date": visitDate
    };
}

class ConnectedUser {
    ConnectedUser({
        this.info,this.user,});

    Info info;
    User user;

    factory ConnectedUser.fromJson(Map<String,dynamic> json) => ConnectedUser(
        info: Info.fromJson(json["info"]),user: User.fromJson(json["user"]),);

    Map<String,dynamic> toJson() => {
        "info": info.toJson(),"user": user.toJson(),};
}

class Info {
    Info({
        this.picture,});

    String picture;

    factory Info.fromJson(Map<String,dynamic> json) => Info(
        picture: json["picture"],dynamic> toJson() => {
        "picture": picture,};
}

class User {
    User({
        this.appointmentId,this.degree,this.specialty,this.visitDate,});

    String appointmentId;
    String degree;
    String id;
    String name;
    List<PhoneNumber> phoneNumbers;
    String picture;
    String role;
    String specialty;
    String visitDate;

    factory User.fromJson(Map<String,dynamic> json) => User(
        appointmentId: json["appointment_id"],degree: json["degree"],specialty: json["specialty"],visitDate: json["visit_date"],dynamic> toJson() => {
        "appointment_id": appointmentId,"degree": degree,"specialty": specialty,"visit_date": visitDate,};
}

class PhoneNumber {
    PhoneNumber({
        this.number,this.title,});

    String number;
    String title;

    factory PhoneNumber.fromJson(Map<String,dynamic> json) => PhoneNumber(
        number: json["number"],title: json["title"],dynamic> toJson() => {
        "number": number,"title": title,};
}

class MedicalDataObj {
    MedicalDataObj({
        this.desc,this.level,});

    String desc;
    int id;
    int level;

    factory MedicalDataObj.fromJson(Map<String,dynamic> json) => MedicalDataObj(
        desc: json["desc"],level: json["level"],dynamic> toJson() => {
        "desc": desc,"level": level,};
}

错误

Dart Unhandled Exception: type '(dynamic) => PatientsInfo' is not a subtype of type '(String,dynamic) => MapEntry<dynamic,dynamic>' of 'transform',stack trace: #0      GetPatientsInfo.getPatients

解决方法

getPatients 中的以下行无效：

var response = List<PatientsInfo>.from(mapResponse.map((i) => PatientsInfo.fromJson(i)));

与闭包 (i) => PatientsInfo.fromJson(i) 不同，Map.map 期待一些类似于 (key,value) => MapEntry(newKey,newValue) 的东西。

这就是类型错误告诉你的。