有没有人使用cloud_firestore插件成功运行交易?我收到以下错误:
E / AndroidRuntime(26208):致命异常:AsyncTask#2 E / AndroidRuntime(26208):处理:io.flutter.plugins.googlesigninexample,PID:26208 E / AndroidRuntime(26208):java.lang.RuntimeException:>执行doInBackground()时发生错误 E / AndroidRuntime(26208):在android.os.AsyncTask $ 3.done(AsyncTask.java:353) E / AndroidRuntime(26208):at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383) E / AndroidRuntime(26208):at java.util.concurrent.FutureTask.setException(FutureTask.java:252) E / AndroidRuntime(26208):at java.util.concurrent.FutureTask.run(FutureTask.java:271) E / AndroidRuntime(26208):在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:245) E / AndroidRuntime(26208):at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) E / AndroidRuntime(26208):at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:636) E / AndroidRuntime(26208):at java.lang.Thread.run(Thread.java:764) E / AndroidRuntime(26208):引起:java.lang.IllegalArgumentException:>提供的文档引用来自不同的Firestore实例。 E / AndroidRuntime(26208):在com.google.firebase.firestore.FirebaseFirestore.zza(未知来源:17) E / AndroidRuntime(26208):在com.google.firebase.firestore.Transaction.get(未知来源:2) E / AndroidRuntime(26208):at io.flutter.plugins.firebase.cloudfirestore.CloudFirestorePlugin $ 4.doInBackground(CloudFirestorePlugin.java:321) E / AndroidRuntime(26208):at io.flutter.plugins.firebase.cloudfirestore.CloudFirestorePlugin $ 4.doInBackground(CloudFirestorePlugin.java:316) E / AndroidRuntime(26208):在android.os.AsyncTask $ 2.call(AsyncTask.java:333) E / AndroidRuntime(26208):at java.util.concurrent.FutureTask.run(FutureTask.java:266) E / AndroidRuntime(26208):...还有4个 D / FlutterNativeView(26208):handlePlatformMessage回复分离视图,channel = plugins.flutter.io / cloud_firestore I / FirebaseAuth(26208):[FirebaseAuth:]通过FirebaseOptions加载模块。 I / FirebaseAuth(26208):[FirebaseAuth:]准备创建与gms实现的服务连接
以下是基于https://github.com/flutter/plugins/tree/master/packages/cloud_firestore#usage的代码:
final DocumentReference postRef =
Firestore.instance.document('posts/post1');
Firestore.instance.runTransaction((Transaction tx) async {
DocumentSnapshot postSnapshot = await tx.get(postRef);
if (postSnapshot.exists) {
await tx.update(postRef,
<String, dynamic>{'likesCt': postSnapshot.data['likesCt'] + 1});
}
});
pubspec.lock:
cloud_firestore:
dependency: "direct main"
description:
name: cloud_firestore
url: "https://pub.dartlang.org"
source: hosted
version: "0.7.0+2"
扑克医生:
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel beta, v0.3.1, on Microsoft Windows [Version
10.0.16299.431], locale en-US)
[√] Android toolchain - develop for Android devices (Android SDK 27.0.3)
[√] Android Studio (version 3.1)
X Flutter plugin not installed; this adds Flutter specific functionality.
X Dart plugin not installed; this adds Dart specific functionality.
[√] IntelliJ IDEA Community Edition (version 2018.1)
[√] Connected devices (1 available)
• No issues found!
答案 0 :(得分:1)
一段时间以来,我遇到了同样的问题,每次尝试运行事务时,我的应用都会崩溃。
我在main.dart中这样启动我的应用程序:
final FirebaseApp app =
await FirebaseApp.configure(options: _options(), name: 'testauth');
final Firestore firestore = Firestore(app: app);
await firestore.settings(timestampsInSnapshotsEnabled: true);
经过身份验证后,我直接转到homescreen.dart,它正在使用新的Firestore.instance ...完全与主要版本无关。
我从一个错误
跟踪了我的问题原因:java.lang.IllegalArgumentException:提供的文档参考来自其他Firestore实例。
所以我删除了行
final Firestore firestore = Firestore(app: app);
await firestore.settings(timestampsInSnapshotsEnabled: true);
最终使交易按预期运行。我认为这种想法是不要同时发生多个实例。