我正在尝试向我的Android gradle项目添加依赖项,并在构建时不断出现以下错误…

A problem occurred evaluating project ':app'.
> Project with path 'externalproject' could not be found in project ':app'.

我有一个外部Java gradle项目,我想在构建Android应用程序之前先进行构建.

我已将此新项目添加到我的settings.gradle中,如下所示…

include ':app',":externalproject"
project(':externalproject').projectDir = new File(settingsDir,'../externalproject')

rootProject.name = 'mayapp'

我在app文件夹中的build.gradle如下所示…

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.androidapp1"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    implementation 'com.android.support:appcompat-v7:26.0.0'
    compile project('externalproject')
}