当我做一个make时如何找到此错误的问题我收到此错误消息：

错误：(9,5)错误：找不到资源android：attr / colorError

奇怪的是我有2个build.gradle文件：

这里是我的build.gradle(Project：Projectname)文件：

buildscript {

repositories {

jcenter()

}

dependencies {

classpath 'com.android.tools.build:gradle:3.0.0'

// NOTE: Do not place your application dependencies here; they belong

// in the individual module build.gradle files

}

}

allprojects {

repositories {

jcenter()

maven {

url "https://maven.google.com"

}

}

}

task clean(type: Delete) {

delete rootProject.buildDir

}

这是我的build.gradle(模块：app)文件：

apply plugin: 'com.android.application'

android {

compileSdkVersion 22

defaultConfig {

applicationId "org.acme.nfcedit"

minSdkVersion 22

targetSdkVersion 26

versionCode 1

versionName "1.0"

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

}

buildTypes {

release {

minifyEnabled false

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

}

}

productFlavors {

}

}

dependencies {

implementation fileTree(include: ['*.jar'], dir: 'libs')

implementation 'com.android.support:appcompat-v7:26.1.0'

implementation 'com.android.support.constraint:constraint-layout:1.0.2'

testImplementation 'junit:junit:4.12'

androidTestImplementation 'com.android.support.test:runner:1.0.1'

androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

}

此文件显示为/home/users/.gradle/caches/transforms-1/files-1.1/appcompat-v7-26.1.0.aar/c41e5bc4d98504dc222d4eca88ab6d1b/res/values-v26/values-v26.xml内容

?android:attr/colorError

?android:attr/colorError

true

true

我不知道什么是mmeaning？android：attr / colorError

谢谢