android - 无法将任何数据添加到实时数据库 Firebase
问题描述
我正在尝试将数据从我的颤振应用程序发送到 firebase 实时数据库。
我的 firebase 项目已连接到我的应用程序，它已初始化，我已完成所有配置步骤和身份验证。我知道身份验证没问题，因为我在用户连接时在 firebase 中获取了用户电子邮件地址，因此应用程序已连接。我的问题是当我想使用 set() 命令将任何数据发送到实时数据库时，没有任何附加内容。
我的 pubspect.yaml 文件：
dependencies:
flutter:
sdk: flutter
firebase_auth: ^1.2.0
google_sign_in: ^5.0.3
firebase_database: ^6.1.2
我的 android/build.gradle 文件：
dependencies {
classpath 'com.google.gms:google-services:4.3.8'
classpath 'com.android.tools.build:gradle:4.1.0'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"}
最后是我的飞镖文件：
import 'package:firebase_database/firebase_database.dart';
import "post.dart";
//First attempt using this tutorial : https://github.com/FirebaseExtended/flutterfire/blob/master/packages/firebase_database/firebase_database/example/lib/main.dart
void savePost(Post post) {
// Still not working
print("Saving post");
FirebaseDatabase database = FirebaseDatabase();
final test = database.reference().child("posts/");
print("Set...");
test.push().set(post.toJson());
print("Set done");
}
//And second attempt from this video : https://www.youtube.com/watch?v=qWjnxjB-sTA&list=PLzMcBGfZo4-knQWGK2IC49Q_5AnQrFpzv&index=10
final databaseReference = FirebaseDatabase.instance.reference();
DatabaseReference savePost2(Post post) {
// automatically create posts table in the database
print("Saving post");
var id = databaseReference.child('posts/').push();
id.set(post.toJson());
print("id du post : $id");
return id;
}
我实际上为 savePost/savePost2 方法提供了一个 post 类作为参数，如果需要，这里是代码：
import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_database/firebase_database.dart';
class Post {
// We're going to create a Post class for all of out posts.
// Here are the attributes of the class
String body;
String author;
Set usersliked = {};
Future _id;
Post(this.body, this.author);
void likePost(User user) {
//print("LikePost function triggered");
//print(usersliked);
//print(user.uid);
if (this.usersliked.contains(user.uid)) {
this.usersliked.remove(user.uid);
} else {
this.usersliked.add(user.uid);
}
}
void setId(Future id) {
this._id = id;
}
// Method that transform the entire post into a dictionary in order to post it to firebase
// Which require Json format info
Map<String, dynamic> toJson() {
return {
'author': this.author,
'usersLiked': this.usersliked.toList(),
'body': this.body,
};
}
}
这是我启动应用程序、连接并发布内容时的输出控制台（在发布期间，它在发送到数据库时被感知到。）
Launching lib\main.dart on SM A520F in debug mode...
lib\main.dart:1
Format incorrect du param�tre -
√ Built build\app\outputs\flutter-apk\app-debug.apk.
Connecting to VM Service at ws://127.0.0.1:55233/pgCCjKx58HM=/ws
D/libGLESv2( 9717): STS_GLApi : DTS, ODTC are not allowed for Package : com.example.hello_world
I/flutter ( 9717): Logged out!
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x1 surface={valid=true 522830450688} changed=false
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 0
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 1
I/flutter ( 9717): Starting to sign in
I/zygote64( 9717): Do partial code cache collection, code=61KB, data=51KB
I/zygote64( 9717): After code cache collection, code=61KB, data=52KB
I/zygote64( 9717): Increasing code cache capacity to 256KB
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): setView = DecorView@3585f03[SignInHubActivity] TM=true MM=false
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_WINDOW_FOCUS_CHANGED 0
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): dispatchAttachedToWindow
V/Surface ( 9717): sf_framedrop debug : 0x4f4c, game : false, logging : 0
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): Relayout returned: old=[0,0][0,0] new=[0,0][1080,1920] result=0x7 surface={valid=true 522820235264} changed=true
D/mali_winsys( 9717): EGLint new_window_surface(egl_winsys_display *, void *, EGLSurface, EGLConfig, egl_winsys_surface **, egl_color_buffer_format *, EGLBoolean) returns 0x3000, [1080x1920]-format:1
D/OpenGLRenderer( 9717): eglCreateWindowSurface = 0x79bb1a8100
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): MSG_RESIZED_REPORT: frame=Rect(0, 0 - 1080, 1920) ci=Rect(0, 72 - 0, 0) vi=Rect(0, 72 - 0, 0) or=1
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): MSG_WINDOW_FOCUS_CHANGED 1
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@dbcb42d nm : com.example.hello_world ic=null
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): MSG_WINDOW_FOCUS_CHANGED 0
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_WINDOW_FOCUS_CHANGED 1
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@13d3be5 nm : com.example.hello_world ic=null
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/OpenGLRenderer( 9717): eglDestroySurface = 0x79bb1a8100
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x5 surface={valid=false 0} changed=true
D/ViewRootImpl@6b03514[SignInHubActivity]( 9717): dispatchDetachedFromWindow
D/InputEventReceiver( 9717): channel 'c358f36 com.example.hello_world/com.google.android.gms.auth.api.signin.internal.SignInHubActivity (client)' ~ Disposing input event receiver.
I/flutter ( 9717): redirect
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 0
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 1
D/InputMethodManager( 9717): SSI - flag : 0 Pid : 9717 view : com.example.hello_world
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@7f3831b nm : com.example.hello_world ic=io.flutter.plugin.editing.InputConnectionAdaptor@6833cb8
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_RESIZED: frame=Rect(0, 0 - 1080, 1920) ci=Rect(0, 72 - 0, 873) vi=Rect(0, 72 - 0, 873) or=1
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x1 surface={valid=true 522830450688} changed=false
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 0
D/ViewRootImpl@9241454[MainActivity]( 9717): ViewPostIme pointer 1
I/flutter ( 9717): Creating a new post
I/flutter ( 9717): Saving post
I/flutter ( 9717): id du post : Instance of 'DatabaseReference'
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@6053a93 nm : com.example.hello_world ic=io.flutter.plugin.editing.InputConnectionAdaptor@8c4ead0
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
W/IInputConnectionWrapper( 9717): getExtractedText on inactive InputConnection
D/InputMethodManager( 9717): SSI - flag : 0 Pid : 9717 view : com.example.hello_world
D/InputMethodManager( 9717): HSIFW - flag : 0 Pid : 9717
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_RESIZED: frame=Rect(0, 0 - 1080, 1920) ci=Rect(0, 72 - 0, 0) vi=Rect(0, 72 - 0, 0) or=1
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x1 surface={valid=true 522830450688} changed=false
I/zygote64( 9717): Do full code cache collection, code=116KB, data=108KB
I/zygote64( 9717): After code cache collection, code=109KB, data=86KB
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@fb7690b nm : com.example.hello_world ic=null
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/SurfaceView( 9717): BG show() Surface(name=Background for - SurfaceView - com.example.hello_world/com.example.hello_world.MainActivity@5cf0ef9@0) io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
D/SurfaceView( 9717): surfaceDestroyed 1 #1 io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@b629ef5 nm : com.example.hello_world ic=null
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/SurfaceView( 9717): BG show() Surface(name=Background for - SurfaceView - com.example.hello_world/com.example.hello_world.MainActivity@5cf0ef9@1) io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
V/Surface ( 9717): sf_framedrop debug : 0x4f4c, game : false, logging : 0
D/SurfaceView( 9717): surfaceCreated 1 #1 io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
D/mali_winsys( 9717): EGLint new_window_surface(egl_winsys_display *, void *, EGLSurface, EGLConfig, egl_winsys_surface **, egl_color_buffer_format *, EGLBoolean) returns 0x3000, [1080x1920]-format:1
D/SurfaceView( 9717): surfaceChanged (1080,1920) 1 #1 io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
D/SurfaceView( 9717): BG destroy() Surface(name=Background for - SurfaceView - com.example.hello_world/com.example.hello_world.MainActivity@5cf0ef9@0) io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ......I. 0,0-1080,1920}
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x1 surface={valid=true 522830450688} changed=false
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x3 surface={valid=true 522830450688} changed=false
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_RESIZED_REPORT: frame=Rect(0, 0 - 1080, 1920) ci=Rect(0, 72 - 0, 0) vi=Rect(0, 72 - 0, 0) or=1
V/InputMethodManager( 9717): Starting input: tba=android.view.inputmethod.EditorInfo@bea848a nm : com.example.hello_world ic=null
I/InputMethodManager( 9717): startInputInner - mService.startInputOrWindowGainedFocus
D/SurfaceView( 9717): BG show() Surface(name=Background for - SurfaceView - com.example.hello_world/com.example.hello_world.MainActivity@5cf0ef9@1) io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ........ 0,0-1080,1920}
D/SurfaceView( 9717): surfaceDestroyed 1 #1 io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ........ 0,0-1080,1920}
D/SurfaceView( 9717): BG show() Surface(name=Background for - SurfaceView - com.example.hello_world/com.example.hello_world.MainActivity@5cf0ef9@1) io.flutter.embedding.android.FlutterSurfaceView{5cf0ef9 V.E...... ........ 0,0-1080,1920}
D/OpenGLRenderer( 9717): eglDestroySurface = 0x79b7750140
D/ViewRootImpl@9241454[MainActivity]( 9717): Relayout returned: old=[0,0][1080,1920] new=[0,0][1080,1920] result=0x5 surface={valid=false 0} changed=true
D/ViewRootImpl@9241454[MainActivity]( 9717): MSG_WINDOW_FOCUS_CHANGED 0
解决方案
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