无法从Android Studio向Firebase推送数据，实时数据库配置受阻

开发者阿泽

2026-7-25

问题描述

我在Firebase Realtime Database入门流程中，无法完成第2步“将实时数据库添加到应用”，怀疑这是导致Android Studio无法向Firebase推送数据的原因。

执行以下代码时，try-catch块和监听回调中的日志均无输出：

try {
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference myRef = database.getReference("foodAccount");
    myRef.setValue("heloooo");
    if (myRef == null) {
        System.out.println("faillll");
    }
    myRef.setValue("foodAccountData")
            .addOnSuccessListener(new OnSuccessListener<Void>() {
                @Override
                public void onSuccess(Void aVoid) {
                    System.out.println("Worked");
                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    System.out.println("Not worked");
                }
            });
} catch (Exception e) {
    e.printStackTrace();
}

AndroidManifest.xml 配置

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.Test"
        tools:targetApi="31">
        <activity
            android:name=".WorkerOrderDetailActivity"
            android:exported="false" />
        <activity
            android:name=".WorkerOrderNoActivity"
            android:exported="false" />
        <activity
            android:name=".WorkerMainActivity"
            android:exported="false" />
        <activity
            android:name=".LocationActivity"
            android:exported="false" />

        <meta-data
            android:name="com.google.android.geo.API_KEY"
            android:value="AIzaSyCt0I6k3QLaB3XQrNZE9uAae6kXKnoLg4M" />

        <activity
            android:name=".MapsActivity"
            android:exported="false"
            android:label="@string/title_activity_maps" />

        <meta-data
            android:name="com.google.gms.version"
            android:exported="true"
            android:value="@integer/google_play_services_version" />

        <activity
            android:name=".ProfileActivity"
            android:exported="false" />
        <activity
            android:name=".SetProfileActivity"
            android:exported="false" />
        <activity
            android:name=".HomeActivity"
            android:exported="false" />
        <activity
            android:name=".SignUpActivity"
            android:exported="false" />
        <activity
            android:name=".SummaryActivity"
            android:exported="false" />
        <activity
            android:name=".infoActivity"
            android:exported="false" />
        <activity
            android:name=".SignInActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

build.gradle（Module级别）配置

plugins {
    id 'com.android.application'
    id 'com.google.android.libraries.mapsplatform.secrets-gradle-plugin'
    id 'com.google.gms.google-services'
}

android {
    namespace 'com.example.test'
    compileSdk 33

    dataBinding {
        enabled = true
    }

    buildscript {
        repositories {
            google()
            mavenCentral()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:7.0.4'
        }
    }


    defaultConfig {
        applicationId "com.example.test"
        minSdk 28
        targetSdk 33
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildFeatures{
        viewBinding true
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    buildFeatures {
        viewBinding true
    }


}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.8.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    implementation 'com.android.car.ui:car-ui-lib:2.4.0'
    implementation 'com.google.firebase:firebase-database-ktx:20.1.0'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
    implementation "androidx.cardview:cardview:1.0.0"
    implementation "com.google.android.material:material:1.9.0-beta01"
    implementation "androidx.recyclerview:recyclerview:1.3.0"
    implementation "com.google.android.material:material:1.8.0"
    implementation 'com.github.bumptech.glide:glide:4.12.0'
    implementation 'com.google.android.gms:play-services-maps:18.1.0'
    implementation 'com.google.maps:google-maps-services:0.2.5'
    implementation 'com.google.maps.android:android-maps-utils:2.3.0'
    implementation 'com.google.android.libraries.places:places:3.0.0'
    implementation 'com.google.firebase:firebase-database'

}

解决方案

解决Realtime Database添加失败问题
- 确认Firebase控制台已创建Realtime Database实例，且实例处于“运行中”状态。
- 检查google-services.json文件是否正确放置在app/目录下，且文件内的数据库URL与控制台实例URL一致。
- 重新执行Firebase Assistant中的“添加实时数据库到应用”流程，确保所有配置步骤完成。

排查数据推送无日志问题

替换System.out.println为Android官方日志工具Log.d/Log.e，System.out输出可能不会显示在Logcat中。修改后代码示例：

try {
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    DatabaseReference myRef = database.getReference("foodAccount");
    Log.d("FirebaseDB", "数据库引用初始化完成: " + myRef.toString());
    
    myRef.setValue("foodAccountData")
            .addOnSuccessListener(new OnSuccessListener<Void>() {
                @Override
                public void onSuccess(Void aVoid) {
                    Log.d("FirebaseDB", "数据写入成功");
                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    Log.e("FirebaseDB", "数据写入失败", e);
                }
            });
} catch (Exception e) {
    Log.e("FirebaseDB", "初始化异常", e);
}

检查Firebase数据库安全规则，开发阶段可临时设置为允许读写：
```
{
  "rules": {
    ".read": true,
    ".write": true
  }
}
```
移除重复依赖：build.gradle中同时引入了firebase-database-ktx和firebase-database，保留其一即可（推荐保留ktx版本）。
确认设备网络正常，能访问Firebase服务。

内容的提问来源于stack exchange，提问作者Linh Tran

无法从Android Studio向Firebase推送数据，实时数据库配置受阻

AndroidManifest.xml 配置 #

build.gradle（Module级别）配置 #

AndroidManifest.xml 配置

build.gradle（Module级别）配置