Flutter navigator push in initstate 进入循环

Question

如果主页上缺少数据，我正在尝试重定向到另一个页面，但他进入循环并一直工作

@override
void initState() {
super.initState();
   _firestore
        .collection('users')
        .document(widget.firebaseUser.uid)
        .snapshots()
        .listen((DocumentSnapshot snapshot) => _onMeUpdate(snapshot));
}

void _onMeUpdate(DocumentSnapshot snapshot) {
  if (mounted) {
      setState(() {
       _gender = snapshot.data['gender'] ?? '';
       _match = snapshot.data['match'] ?? '';
       Future(() {
          if (_gender.isEmpty) {
            Navigator.of(context).push(CupertinoPageRoute(
                builder: (BuildContext context) => Page1(
                    firebaseUser: widget.firebaseUser)));
          } else {
            if (_match.isEmpty) {
              Navigator.of(context).push(CupertinoPageRoute(
                  builder: (BuildContext context) => Page2(
                      firebaseUser: widget.firebaseUser)));
            }
          }
        });
     });
  }
}

Answer 1

我正在寻找我的答案，我把答案留给你发生的一切。

当他用 pushReplacement 代替 push 时发生了这种情况

Navigator.of(context).pushReplacement(CupertinoPageRoute(
                  builder: (BuildContext context) => Page2(
                      firebaseUser: widget.firebaseUser)));

Answer 2

使用这个：

WidgetsBinding.instance.addPostFrameCallback((_) => 
Navigator.of(context).push(CupertinoPageRoute( builder: (BuildContext context) => 
Page2(firebaseUser: widget.firebaseUser))));

Flutter navigator push in initstate 进入循环

Flutter navigator push in initstate going into the loop

navigator

flutter

google-cloud-firestore