在我尝试初始化两个引用之后,在我的主要Activity中,它崩溃了,只是发现了错误“ FirebaseApp初始化失败”
private StorageReference mStorageReference;
private DatabaseReference mDatabaseReference;
mStorageReference = FirebaseStorage.getInstance().getReference("uploads");
mDatabaseReference = FirebaseDatabase.getInstance().getReference("uploads");
私有声明和代码本身之间有一些代码,但这与该问题无关
清单是:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.firebase10">
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
build.gradle(Project):
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.3.1'
classpath 'com.google.gms:google-services:4.1.0'
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle(app):
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.firebase10"
minSdkVersion 19
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner
"android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-
optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
api "com.google.android.gms:play-services-base:15.0.1"
api "com.google.android.gms:play-services-auth:16.0.0"
api "com.google.android.gms:play-services-identity:15.0.1"
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation "com.android.support:customtabs:28.0.0"
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-storage:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.3'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'com.google.gms:google-services:4.2.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-
core:3.0.2'
}
我使用Tools-Firebase设置了所有内容,而且我知道代码看起来像是粘在一起的,因为它确实是。我一直在研究线程,只是添加了一些东西,但没有任何效果。如果这很重要,我将在手机上而不是模拟器上运行该应用程序。
答案 0 :(得分:0)
您的google-json文件设置是否正确?
Firebase还需要时间连接到它的服务器,并为您提供引用到您设备的实例,给它一些时间或使用承诺来确保Firebase已连接到它的服务器并生成实例,然后执行所需的操作Firebase实例。
答案 1 :(得分:0)
在build.gradle(项目)中,我将'com.google.gms:google-services:4.1.0'更改为'com.google.gms:google-services:4.2 .0',问题就解决了
答案 2 :(得分:0)
这是个废话,因为那是Gradle插件:
dependencies {
implementation 'com.google.gms:google-services:4.2.0'
}
这个属于文件的底部:
apply plugin: 'com.google.gms.google-services'