Error:(7, 0) Could not get unknown property ‘ANDROID_BUILD_SDK_VERSION’ for project ‘:InitActivity’

build.gradle如下

apply plugin: 'com.android.library'

dependencies {
}

android {
    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION

    defaultConfig {
        minSdkVersion Integer
 
.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
        targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
    }
    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            jniLibs.srcDirs = ['libs']
            aidl.srcDirs = 
 
['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
        }
    }
}

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解決方法

方法1：在工程的根目錄下，建立gradle.properties檔案

用notepad++開啟（記事本也可以）properties檔案檢視一下是不是以下檔案

# Project-wide Gradle settings.

# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.

# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html

# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx1536m

# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true

如果是這樣的改成以下的

ANDROID_BUILD_TARGET_SDK_VERSION=25
ANDROID_BUILD_TOOLS_VERSION=25.0.0
ANDROID_BUILD_SDK_VERSION=25
ANDROID_BUILD_MIN_SDK_VERSION=14

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方法2：Android Studio

方法3

android {
    compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION

    defaultConfig {
         minSdkVersion 8
         targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
    }

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android {
    compileSdkVersion 19
    buildToolsVersion '19.1.0'

    defaultConfig {
         minSdkVersion 15
         targetSdkVersion 19
    }

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