我正在尝试使用Firebase Auth实现一个简单的Flutter Web App。
我得到了错误NoSuchMethodError: tried to call a non-function, such as null: 'dart.global.firebase.auth'。
我在Flutter中为Web和Flutter Web初始化auth（）时，还看过其他帖子，例如“ NoSuchMethodError：尝试调用非函数，例如null：'dart.global.firebase.auth'”。一个非函数，例如null：'dart.global.firebase.storage。
两者都提出了相同的解决方案：将firebase-auth.js添加到index.html。我已经做到了。这是我的index.html文件的样子：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
<meta name="description" content="A new Flutter project.">
<!-- iOS meta tags & icons -->
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="my_app">
<link rel="apple-touch-icon" href="icons/Icon-192.png">
<!-- Favicon -->
<link rel="shortcut icon" type="image/png" href="favicon.png"/>
<title>my_app</title>
<link rel="manifest" href="manifest.json">
</head>
<body>
<!-- This script installs service_worker.js to provide PWA functionality to
application. For more information, see:
https://developers.google.com/web/fundamentals/primers/service-workers -->
<!-- Firebase Configuration-->
<!-- The core Firebase JS SDK is always required and must be listed first -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>
<!-- TODO: Add SDKs for Firebase products that you want to use
https://firebase.google.com/docs/web/setup#available-libraries -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-auth.js"></script>
<!-- <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-analytics.js"></script> -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-firestore.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-storage.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-database.js"></script>
<script>
// Your web app's Firebase configuration
var firebaseConfig = {
//my info
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
// firebase.analytics();
</script>
<!-- End of Firebase Configuration-->
<script>
if ('serviceWorker' in navigator) {
window.addEventListener('load', function () {
navigator.serviceWorker.register('flutter_service_worker.js');
});
}
</script>
<script src="main.dart.js" type="application/javascript"></script>
</body>
</html>
谢谢你的帮助！
原来我放了这个
<!-- Firebase Configuration-->
<!-- The core Firebase JS SDK is always required and must be listed first -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>
<!-- TODO: Add SDKs for Firebase products that you want to use
https://firebase.google.com/docs/web/setup#available-libraries -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-auth.js"></script>
<!-- <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-analytics.js"></script> -->
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-firestore.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-storage.js"></script>
<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-database.js"></script>
<script>
// Your web app's Firebase configuration
var firebaseConfig = {
//my info
};
// Initialize Firebase
firebase.initializeApp(firebaseConfig);
// firebase.analytics();
</script>
<!-- End of Firebase Configuration-->
在错误的地方。
它应该在<head>标签内。
旁注，我有<script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>两次，所以我删除了下面的一个。
最后，感谢David Iglesias在这里的回答：https : //github.com/FirebaseExtended/flutterfire/issues/2860#issuecomment-651313186。
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我来说两句