查看快照之间的更改-Firestore抖动 [英] View changes between snapshots - firestore flutter

问题描述

关于如何在firestore& amp;的上下文中查看特定集合的快照之间的更改的任何想法.扑扑

Any idea on how to view changes between snapshots of specific collection in context of firestore & flutter

想法只能处理添加/删除/更新类型之类的差异.

Idea is to handle only difference like add/delete/update type.

推荐答案

您在这里:

    Firestore.instance.collection("your_collection").snapshots().listen((querySnapShot){

          querySnapShot.documentChanges.forEach((documentChange){
            if (documentChange.type == DocumentChangeType.added){
              print("document: ${documentChange.document.data} added");
            } else if (documentChange.type == DocumentChangeType.modified){
              print("document: ${documentChange.document.data} modified");
            } else if (documentChange.type == DocumentChangeType.removed){
              print("document: ${documentChange.document.data} removed");
            }
          });
    });

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