Android 无法解析符号Firebase
尽管我在build.gradle中添加了implementation,但编译器不会解析任何Firebase类Android 无法解析符号Firebase,android,firebase,gradle,Android,Firebase,Gradle,尽管我在build.gradle中添加了implementation,但编译器不会解析任何Firebase类 apply plugin: 'com.android.application' repositories { google () mavenLocal() flatDir { dirs 'libs' } jcenter() } android { compileSdkVersion 26 buildToolsVe
apply plugin: 'com.android.application'
repositories {
google ()
mavenLocal()
flatDir {
dirs 'libs'
}
jcenter()
}
android {
compileSdkVersion 26
buildToolsVersion '27.0.3'
defaultConfig {
applicationId "com.google.firebase.udacity.friendlychat"
minSdkVersion 16
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
}
}
dependencies {
implementation 'com.firebaseui:firebase-ui-auth:4.1.0'
implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation fileTree(dir: 'libs', include: ['*.jar'])
testImplementation 'junit:junit:4.12'
implementation 'com.android.support:design:26.2.0'
implementation 'com.android.support:appcompat-v7:26.2.0'
// Displaying images
implementation 'com.github.bumptech.glide:glide:3.6.1'
}
apply plugin: 'com.google.gms.google-services'
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
mavenLocal()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.0-alpha17'
classpath 'com.google.gms:google-services:4.0.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
maven { url 'https://maven.google.com' }
jcenter()
mavenLocal()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
应用程序级build.gradle
apply plugin: 'com.android.application'
repositories {
google ()
mavenLocal()
flatDir {
dirs 'libs'
}
jcenter()
}
android {
compileSdkVersion 26
buildToolsVersion '27.0.3'
defaultConfig {
applicationId "com.google.firebase.udacity.friendlychat"
minSdkVersion 16
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
}
}
dependencies {
implementation 'com.firebaseui:firebase-ui-auth:4.1.0'
implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation fileTree(dir: 'libs', include: ['*.jar'])
testImplementation 'junit:junit:4.12'
implementation 'com.android.support:design:26.2.0'
implementation 'com.android.support:appcompat-v7:26.2.0'
// Displaying images
implementation 'com.github.bumptech.glide:glide:3.6.1'
}
apply plugin: 'com.google.gms.google-services'
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
mavenLocal()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.0-alpha17'
classpath 'com.google.gms:google-services:4.0.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
maven { url 'https://maven.google.com' }
jcenter()
mavenLocal()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
项目级build.gradle
apply plugin: 'com.android.application'
repositories {
google ()
mavenLocal()
flatDir {
dirs 'libs'
}
jcenter()
}
android {
compileSdkVersion 26
buildToolsVersion '27.0.3'
defaultConfig {
applicationId "com.google.firebase.udacity.friendlychat"
minSdkVersion 16
targetSdkVersion 26
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
}
}
dependencies {
implementation 'com.firebaseui:firebase-ui-auth:4.1.0'
implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-database:16.0.1'
implementation 'com.google.firebase:firebase-auth:16.0.2'
implementation fileTree(dir: 'libs', include: ['*.jar'])
testImplementation 'junit:junit:4.12'
implementation 'com.android.support:design:26.2.0'
implementation 'com.android.support:appcompat-v7:26.2.0'
// Displaying images
implementation 'com.github.bumptech.glide:glide:3.6.1'
}
apply plugin: 'com.google.gms.google-services'
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
mavenLocal()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.0-alpha17'
classpath 'com.google.gms:google-services:4.0.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
maven { url 'https://maven.google.com' }
jcenter()
mavenLocal()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
在主活动中,IDE无法解析这些类中的任何一个,编译失败
private FirebaseDatabase mFirebaseDatabase;
private DatabaseReference mMessagesDatabaseReference;
private ChildEventListener mChildEventListener;
private FirebaseAuth mFirabaseAuth;
我已将项目与gradle文件同步,我已尝试清理项目,我已尝试重建项目。单击文件->将项目与gradle文件同步 有同样的问题,这为我解决了 如果仍然不起作用,请尝试重新构建。在app build.gradle中 添加依赖项
implementation 'com.google.firebase:firebase-database:16.0.5'
implementation 'com.google.firebase:firebase-core:16.0.5'
如果您试图调用Firebase对象,并且出现以下错误: 错误:无法解析符号Firebase 您可能缺少依赖项 确保将com.firebase:firebase客户端添加到应用程序gradle:
dependencies {
implementation 'com.firebase:firebase-client-android:2.5.2'
如果您只是复制粘贴firebase文档中的代码,请将以下库添加到java文件中:
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
最后一个应该是FirebaseAuth,而不是FiraBaseAuth谢谢你的提示。这并没有纠正我曾经犯过的错误。但我确实通过将firebase数据库从16.0.1更改为16.0.0,然后再返回到16.0.1来修复它。奇怪的