Java 名称为 [DEFAULT] 的 FirebaseApp 不存在
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原文地址: http://stackoverflow.com/questions/37342403/
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FirebaseApp with name [DEFAULT] doesn't exist
提问by natsumiyu
After migrating to Firebase Cloud Messaging.When opening my app it crashes and throws an error saying java.lang.IllegalStateException: FirebaseApp with name [DEFAULT] doesn't exist.I already put my new google-services.json and update my SDK.
迁移到 Firebase Cloud Messaging 后。打开我的应用程序时，它崩溃并抛出一个错误，说java.lang.IllegalStateException: FirebaseApp with name [DEFAULT] doesn't exist.我已经放置了新的 google-services.json 并更新了我的 SDK。
Here's my MainActivity
这是我的主要活动
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Check Google play service
GoogleApiAvailability googleAPI = GoogleApiAvailability.getInstance();
int resultCode = googleAPI.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS) {
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
GooglePlayServicesUtil.getErrorDialog(resultCode, this,
PLAY_SERVICES_RESOLUTION_REQUEST).show();
} else {
Log.e(LOG_TAG, "This device is not supported.");
finish();
}
}
Log.i(TAG, "InstanceID token: " + FirebaseInstanceId.getInstance().getToken());
}
}
采纳答案by Venkatesan
Please do double check, you added
请仔细检查，您已添加
apply plugin: 'com.google.gms.google-services'
at the bottom of app's gradle file and then clean and rebuild the project
在应用程序的gradle文件底部，然后清理并重建项目
回答by Maxim Firsoff
Android Studio
安卓工作室
- apply plugin: 'com.google.gms.google-services' (build.gradle - Module layer)
- Menu~>Build~>CleanProject
- 应用插件：'com.google.gms.google-services'（build.gradle - 模块层）
- 菜单~>Build~>CleanProject
Works for me ok.
对我有用。
回答by elron smith
build.gradle file:
build.gradle 文件：
buildscript {
repositories {
jcenter()
mavenLocal()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.1.2'
classpath 'com.google.gms:google-services:3.0.0'
}
}
allprojects {
repositories {
jcenter()
mavenLocal()
}
}
\app\build.gradle file:
\app\build.gradle 文件：
apply plugin: 'com.android.application'
android {
..
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
..
compile 'com.google.firebase:firebase-core:9.0.2'
compile 'com.google.firebase:firebase-messaging:9.0.2'
}
apply plugin: 'com.google.gms.google-services'
回答by jmodrako
I've had similar problem, and for me it was a bug/problem with manifest merger. I've found out that FirebaseInitProviderhas not been injected into final manifest file because of tools:node="replace"in my app's manifest file. So, try to remove this xml tag and FirebaseInitProviderwill be injected and Firebase can be initialized properly.
我遇到了类似的问题，对我来说这是清单合并的错误/问题。我发现FirebaseInitProvider由于tools:node="replace"在我的应用程序的清单文件中，它没有被注入到最终清单文件中。因此，尝试删除此 xml 标记FirebaseInitProvider并将被注入并且 Firebase 可以正确初始化。
回答by Ramya Ramesh
Move your firebase initialization inside the onCreate of Application class. Also if you have enabled offline persistence, FirebaseDatabase.getInstance().setPersistenceEnabled(true) should come before any other initializations.
将您的 firebase 初始化移动到 Application 类的 onCreate 中。此外，如果您启用了离线持久性，则 FirebaseDatabase.getInstance().setPersistenceEnabled(true) 应该在任何其他初始化之前出现。
回答by Codevalley
Not sure, if it is relevant here. But there is another scenario when this crash can happen.
不确定，如果它在这里相关。但是还有另一种情况会发生这种崩溃。
If your app has a service (with different process) and you're creating your own Applicationclass, the service and the foreground app will use the same Application class (not same instance) to initialize. Now when I am using com.google.firebase:firebase-crashdependancy to handle crashes, it creates a background service your.app.packagename:background_crash. For some reason, this was inducing crashes on my app. Specifically, because in my Application class, I was making a call like,
如果您的应用程序有一个服务（具有不同的进程）并且您正在创建自己的Application类，则该服务和前台应用程序将使用相同的 Application 类（不是相同的实例）进行初始化。现在，当我使用com.google.firebase:firebase-crash依赖来处理崩溃时，它会创建一个后台服务your.app.packagename:background_crash。出于某种原因，这会导致我的应用程序崩溃。具体来说，因为在我的应用程序类中，我正在打电话，
FirebaseDatabase.getInstance().setPersistenceEnabled(true);
I am assuming, the background service when initing with our Application class, somehow Firebase is not initialized. To fix this, I did
我假设，使用我们的 Application 类初始化时的后台服务不知何故未初始化 Firebase。为了解决这个问题，我做了
if (!FirebaseApp.getApps(this).isEmpty())
FirebaseDatabase.getInstance().setPersistenceEnabled(true);
回答by pavel
In your dependency just add:
在您的依赖项中，只需添加：
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
...
compile 'com.google.firebase:firebase-core:9.0.2'
compile 'com.google.firebase:firebase-messaging:9.0.2'
}
apply plugin: 'com.google.gms.google-services'
申请 plugin: 'com.google.gms.google-services'
回答by Carlos Eduardo Liedtke Borges
@jmodrako answer solved my problem... tools:node="replace"to tools:node="merge"
@jmodrako回答解决我的问题......tools:node="replace"到tools:node="merge"
Explained... on AndroidManifest.xml
在 AndroidManifest.xml 上解释...
From
从
<application
...
tools:node="replace">
To
到
<application
...
tools:node="merge">
Merge problems with library themes?Build problems solved using tools:replace="android:theme"
合并图书馆主题的问题？使用解决的构建问题tools:replace="android:theme"
Credits to https://stackoverflow.com/a/38060272/2765087
回答by Carlos Eduardo Liedtke Borges
Register your application in Firebase and copy the google-services.json to your root project.
在 Firebase 中注册您的应用程序并将 google-services.json 复制到您的根项目。
Apply classpath 'com.google.gms:google-services:3.1.0to you root build.gradle.
适用 classpath 'com.google.gms:google-services:3.1.0于您的 root build.gradle。
Apply apply plugin: 'com.google.gms.google-servicesto your project gradle.
适用apply plugin: 'com.google.gms.google-services于您的项目gradle。
回答by Abdul basha
Change the Build Action (GoogleServicesJson) to the File Name Google-Services.Json.
将构建操作 (GoogleServicesJson) 更改为文件名 Google-Services.Json。
