Gradle 返回包不存在 [英] Gradle returns package does not exists

问题描述

我正在尝试将 gson 库添加到我的 android 项目中(我正在使用 Andrdoid-studio 进行开发).

I'm trying to add the gson library to my android project (I'm devloping using the Andrdoid-studio).

为了添加库，我以这种方式更改了 AppProject/AppName/build.gradle 文件:

To add the library, I changed the AppProject/AppName/build.gradle file in this way:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.4'
    }
}
apply plugin: 'android'

repositories {
    mavenCentral()
}

dependencies {
    compile files('libs/android-support-v4.jar')
    compile 'com.google.code.gson:gson:2.2.4'
}

android {
    compileSdkVersion 17
    buildToolsVersion "17.0.0"

    defaultConfig {
        minSdkVersion 4
        targetSdkVersion 16
    }
}

在我尝试使用它之前它似乎有效.

It seems to work until I try to use it.

当我尝试包含它时:

import com.google.code.gson;

Gradle 抱怨肯定:

Gradle complains affirming:

Gradle: error: package com.google does not exist

推荐答案

接受的答案对我不起作用，但这样做了:

The accepted answer did not work for me, but this did:

• 下载 GSON JAR 文件并将其复制到应用程序项目中的/libs/文件夹中.

• 在项目的根级别打开 build.gradle 文件并编辑您的依赖项以包含新的 .jar 文件:

• Download the GSON JAR file and copy it to your /libs/ folder inside your application project.

• Open the build.gradle file at the root level of your project and edit your dependencies to include the new .jar file:

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
}

构建 -> 重建项目

或者，您可以使用文件而不是文件树来指定一个或多个特定的 JAR 文件，例如:编译文件('libs/google-gson-1.7.1/gson-1.7.1.jar')

Optionally, you can specify one or more specific JAR files with files rather than fileTree, such as: compile files('libs/google-gson-1.7.1/gson-1.7.1.jar')

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