我遇到了这种情况,作为解决方法,我使用具有UID
as 属性的组件包装器,如果UID
为 null 则显示等待消息/动画,否则显示您的原始组件。
我的真实场景在此处发布(firebase、routing、vuex)要复杂一些,但基本上包装器组件应该与此类似
<template>
<component :is="CurrentComponent" />
</template>
<script>
import App from './App';
import WaitingAnimation from './WaitingAnimation';
export default {
data() {
return {
Uid: null,
}
},
computed: {
CurrentComponent() {
return this.Uid == null ? WaitingAnimation : App;
}
}
beforeMount() {
//While Firebase is initializing `Firebase.auth().currentUser` will be null
let currentUser = Firebase.auth().currentUser;
//Check currentUser in case you previously initialize Firebase somewhere else
if (currentUser) {
//if currentUser is ready we just finish here
this.Uid = currentUser.uid;
} else {
// if currentUser isn't ready we need to listen for changes
// onAuthStateChanged takes a functions as callback and also return a function
// to stop listening for changes
let authListenerUnsuscribe = Firebase.auth().onAuthStateChanged(user => {
//onAuthStateChanged can pass null when logout
if (user) {
this.Uid = user.uid;
authListenerUnsuscribe(); //Stop listening for changes
}
});
}
}
}
</script>