java - 无法在 Android 中同步 Firebase 的 gradle

Question

我正在尝试在我的项目中使用 firebase sdk，但无法同步 gradle。我已将 jdk 从 1.7 更新到 1.8，并将 google 存储库、android sdk 和工具更新到最新版本，但甚至我收到错误消息，因为无法加载类“com.google.gson.JsonObject”。

项目 Gradle:

buildscript {
repositories {
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:1.0.0'
    classpath 'com.google.gms:google-services:3.0.0'
    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}
} allprojects {
repositories {
    jcenter()
}
}

模块等级:

apply plugin: 'com.android.application'

安卓{ 编译SDK版本23 buildTools版本“23.0.1”

defaultConfig {
    applicationId "nidhinkumar.firebaseexample"
    minSdkVersion 15
    targetSdkVersion 23
    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 {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.firebase:firebase-client-android:2.4.0'
compile 'com.google.firebase:firebase-storage:9.2.1'
compile 'pub.devrel:easypermissions:0.1.9'
compile 'com.google.firebase:firebase-core:9.2.1'
compile 'com.google.firebase:firebase-auth:9.2.1'
 }
apply plugin: 'com.google.gms.google-services'

错误:

Error:Unable to load class 'com.google.gson.JsonObject'.
Possible causes for this unexpected error include:<ul><li>Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
  <a href="syncProject">Re-download dependencies and sync project (requires network)</a></li><li>The state of a Gradle build process (daemon) may be corrupt.  Stopping all Gradle daemons may solve this problem.
  <a href="stopGradleDaemons">Stop Gradle build processes (requires restart)</a></li></ul>In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

Answer 1

您发布的错误消息中提到了解决方案:

Possible causes for this unexpected error include:

• Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.) Re-download dependencies and sync project (requires network)
• The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem. Stop Gradle build processes (requires restart)

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

重新启动 IDE 后，还要执行文件 -> 使缓存无效/重新启动，因为它表示您的缓存已损坏。

评论中对话的更新

应满足先决条件。正如您提到的，您使用的是 AS 1.0.1，它低于 firebase 的要求 - AS 1.5 及更高版本。升级您的 Android Studio，您应该就可以了。