如何使用唯一的文档id从firebase获取数据，并将其存储到变量中，如下面代码中所述，以便在_profilename中使用？ import'包：cloud_firestore/cloud_firestore.dart'； 导入“包：firebase_auth/firebase_auth.dart”； 进口“包装：颤振/材料.省道”； 类ProfileScreen扩展StatefulWidget{ const ProfileScreen（{Key，this.animationController}）：super（Key:Key）； 最终AnimationController AnimationController； @凌驾 _ProfileScreenState createState（）=>\u ProfileScreenState（）； } 类_ProfileScreenState扩展状态 使用TickerProviderStateMixin{ 用户； 动画topBarAnimation； 列表视图=[]； 最终ScrollController ScrollController=ScrollController（）； 双顶部气压容量=0.0； @凌驾 void initState（）{ topBarAnimation=Tween（开始：0.0，结束：1.0）。设置动画( 曲线化( 父项：widget.animationController， 曲线：区间（0,0.5，曲线：Curves.fastoutswowin））； scrollController.addListener（（）{ 如果（scrollController.offset>=24）{ if（顶压能力！=1.0）{ 设置状态（）{ 顶压能力=1.0； }); } }else if（scrollController.offset=0）{ if（TopBaroCapacity！=scrollController.offset/24）{ 设置状态（）{ topBarOpacity=scrollController.offset/24； }); } }else if（scrollController.offset

在您的问题中很难看到任何与Firestore相关的代码，但正如@Frank在评论中提到的，这个用例非常常见。 简单地说，如下所示：

获取当前用户的UID

向Firestore发出文档ID为UID的请求 （不清楚文档ID是否为用户UID本身，但我将继续示例）

请确保已安装最新版本的Firebase SDK：

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';

class ProfileScreen extends StatefulWidget {
  const ProfileScreen({Key key, this.animationController}) : super(key: key);
  final AnimationController animationController;
  @override
  _ProfileScreenState createState() => _ProfileScreenState();
}

class _ProfileScreenState extends State<ProfileScreen>
    with TickerProviderStateMixin {
  User user;

  Animation<double> topBarAnimation;

  List<Widget> listViews = <Widget>[];
  final ScrollController scrollController = ScrollController();
  double topBarOpacity = 0.0;
  @override
  void initState() {
    topBarAnimation = Tween<double>(begin: 0.0, end: 1.0).animate(
        CurvedAnimation(
            parent: widget.animationController,
            curve: Interval(0, 0.5, curve: Curves.fastOutSlowIn)));

    scrollController.addListener(() {
      if (scrollController.offset >= 24) {
        if (topBarOpacity != 1.0) {
          setState(() {
            topBarOpacity = 1.0;
          });
        }
      } else if (scrollController.offset <= 24 &&
          scrollController.offset >= 0) {
        if (topBarOpacity != scrollController.offset / 24) {
          setState(() {
            topBarOpacity = scrollController.offset / 24;
          });
        }
      } else if (scrollController.offset <= 0) {
        if (topBarOpacity != 0.0) {
          setState(() {
            topBarOpacity = 0.0;
          });
        }
      }
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
          child: Column(
        children: [
          //for circle avtar image
          _getHeader(),
          SizedBox(
            height: 10,
          ),
          _profileName("Pranshul"),
          SizedBox(
            height: 14,
          ),
          _heading("Personal Details"),
          SizedBox(
            height: 6,
          ),
          _detailsCard(),
          SizedBox(
            height: 10,
          ),
          _heading("Other Details"),
          SizedBox(
            height: 6,
          ),
          _settingsCard(),
        ],
      )),
    );
  }

  Widget _getHeader() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Padding(
          padding: const EdgeInsets.all(10.0),
          child: Container(
            height: 100,
            width: 100,
            decoration: BoxDecoration(
                //borderRadius: BorderRadius.all(Radius.circular(10.0)),
                shape: BoxShape.circle,
                image: DecorationImage(
                    fit: BoxFit.fill,
                    image: NetworkImage(
                        "https://i.pinimg.com/originals/c5/97/1e/c5971e1f8181a1d85a35f47456af4db2.gif"))
                // color: Colors.orange[100],
                ),
          ),
        ),
      ],
    );
  }

  Widget _profileName(String name) {
    return Container(
      width: MediaQuery.of(context).size.width * 0.80, //80% of width,
      child: Center(
        child: Text(
          name,
          style: TextStyle(
              color: Colors.black, fontSize: 24, fontWeight: FontWeight.w800),
        ),
      ),
    );
  }

  Widget _heading(String heading) {
    return Container(
      width: MediaQuery.of(context).size.width * 0.80, //80% of width,
      child: Text(
        heading,
        style: TextStyle(fontSize: 16),
      ),
    );
  }

  Widget _detailsCard() {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Card(
        elevation: 4,
        child: Column(
          children: [
            //row for each deatails
            ListTile(
              leading: Icon(Icons.email),
              title: Text("Pranshulagrawal9269@gmail.com"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.phone),
              title: Text("72320xxxxx"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.location_on),
              title: Text("Rajasthan"),
            )
          ],
        ),
      ),
    );
  }

  Widget _settingsCard() {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Card(
        elevation: 4,
        child: Column(
          children: [
            ListTile(
              leading: Icon(Icons.topic),
              title: Text("Pranshul Agrawal"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            //row for each deatails
            ListTile(
              leading: Icon(Icons.settings),
              title: Text("3417-7885-xxxx"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.dashboard_customize),
              title: Text("RJAOKFTGBVFG75468"),
            ),
          ],
        ),
      ),
    );
  }
}

正在获取当前用户UID，然后获取文档：

dependencies:
  flutter:
    sdk: flutter
  firebase_core: "^0.7.0"
  firebase_auth: "^0.20.1"
  cloud_firestore: "^0.16.0+1"

//Latest version while answering this ^

如果UID作为字段存储在文档中，并且与文档ID不同，则可以使用。

---

如果您还有任何问题，请告诉我！

在您的问题中很难看到任何与Firestore相关的代码，但正如@Frank在评论中提到的，此用例非常常见。 简单地说，如下所示：

获取当前用户的UID

向Firestore发出文档ID为UID的请求 （不清楚文档ID是否为用户UID本身，但我将继续示例）

请确保已安装最新版本的Firebase SDK：

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';

class ProfileScreen extends StatefulWidget {
  const ProfileScreen({Key key, this.animationController}) : super(key: key);
  final AnimationController animationController;
  @override
  _ProfileScreenState createState() => _ProfileScreenState();
}

class _ProfileScreenState extends State<ProfileScreen>
    with TickerProviderStateMixin {
  User user;

  Animation<double> topBarAnimation;

  List<Widget> listViews = <Widget>[];
  final ScrollController scrollController = ScrollController();
  double topBarOpacity = 0.0;
  @override
  void initState() {
    topBarAnimation = Tween<double>(begin: 0.0, end: 1.0).animate(
        CurvedAnimation(
            parent: widget.animationController,
            curve: Interval(0, 0.5, curve: Curves.fastOutSlowIn)));

    scrollController.addListener(() {
      if (scrollController.offset >= 24) {
        if (topBarOpacity != 1.0) {
          setState(() {
            topBarOpacity = 1.0;
          });
        }
      } else if (scrollController.offset <= 24 &&
          scrollController.offset >= 0) {
        if (topBarOpacity != scrollController.offset / 24) {
          setState(() {
            topBarOpacity = scrollController.offset / 24;
          });
        }
      } else if (scrollController.offset <= 0) {
        if (topBarOpacity != 0.0) {
          setState(() {
            topBarOpacity = 0.0;
          });
        }
      }
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
          child: Column(
        children: [
          //for circle avtar image
          _getHeader(),
          SizedBox(
            height: 10,
          ),
          _profileName("Pranshul"),
          SizedBox(
            height: 14,
          ),
          _heading("Personal Details"),
          SizedBox(
            height: 6,
          ),
          _detailsCard(),
          SizedBox(
            height: 10,
          ),
          _heading("Other Details"),
          SizedBox(
            height: 6,
          ),
          _settingsCard(),
        ],
      )),
    );
  }

  Widget _getHeader() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        Padding(
          padding: const EdgeInsets.all(10.0),
          child: Container(
            height: 100,
            width: 100,
            decoration: BoxDecoration(
                //borderRadius: BorderRadius.all(Radius.circular(10.0)),
                shape: BoxShape.circle,
                image: DecorationImage(
                    fit: BoxFit.fill,
                    image: NetworkImage(
                        "https://i.pinimg.com/originals/c5/97/1e/c5971e1f8181a1d85a35f47456af4db2.gif"))
                // color: Colors.orange[100],
                ),
          ),
        ),
      ],
    );
  }

  Widget _profileName(String name) {
    return Container(
      width: MediaQuery.of(context).size.width * 0.80, //80% of width,
      child: Center(
        child: Text(
          name,
          style: TextStyle(
              color: Colors.black, fontSize: 24, fontWeight: FontWeight.w800),
        ),
      ),
    );
  }

  Widget _heading(String heading) {
    return Container(
      width: MediaQuery.of(context).size.width * 0.80, //80% of width,
      child: Text(
        heading,
        style: TextStyle(fontSize: 16),
      ),
    );
  }

  Widget _detailsCard() {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Card(
        elevation: 4,
        child: Column(
          children: [
            //row for each deatails
            ListTile(
              leading: Icon(Icons.email),
              title: Text("Pranshulagrawal9269@gmail.com"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.phone),
              title: Text("72320xxxxx"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.location_on),
              title: Text("Rajasthan"),
            )
          ],
        ),
      ),
    );
  }

  Widget _settingsCard() {
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Card(
        elevation: 4,
        child: Column(
          children: [
            ListTile(
              leading: Icon(Icons.topic),
              title: Text("Pranshul Agrawal"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            //row for each deatails
            ListTile(
              leading: Icon(Icons.settings),
              title: Text("3417-7885-xxxx"),
            ),
            Divider(
              height: 0.6,
              color: Colors.black87,
            ),
            ListTile(
              leading: Icon(Icons.dashboard_customize),
              title: Text("RJAOKFTGBVFG75468"),
            ),
          ],
        ),
      ),
    );
  }
}

正在获取当前用户UID，然后获取文档：

dependencies:
  flutter:
    sdk: flutter
  firebase_core: "^0.7.0"
  firebase_auth: "^0.20.1"
  cloud_firestore: "^0.16.0+1"

//Latest version while answering this ^

如果UID作为字段存储在文档中，并且与文档ID不同，则可以使用。

---

如果您还有任何问题，请告诉我！

if conditionfetchdata（）{var firebaseUser=FirebaseAuth.instance.currentUser；CollectionReference CollectionReference=Firestore.instance.collection（'users'）；CollectionReference.snapshots（）.listen（（快照）{setState（（）{data=snapshot.documents[0].data（）；name=data['Aadharno'].toString（）；print（name）；}）；}）；已尝试此操作，但无法在文档中分配uid，因为它只需要intvalue@PranshulAgrawal请共享错误

.doc（）的屏幕截图

显然也接受了前面提到的字符串值，在if conditionfetchdata（）{var firebaseUser=FirebaseAuth.instance.currentUser；CollectionReference CollectionReference=Firestore.instance.collection（'users'）；CollectionReference.snapshots（）.listen（（快照）{setState（）{data=snapshot.documents[0].data（）；name=data['Aadharno'].toString（）；print（name）；}）；}）；已尝试此操作，但无法在文档中分配uid，因为它只需要intvalue@PranshulAgrawal请分享错误

.doc（）

的屏幕截图，清楚地接受前面提到的字符串值