Estoy usando Android Studio 3.1.3. Error de sincronización de compilación de Gradle. Utilicé el siguiente método pero no lo uso. Si hay alguna solución, dígame

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

Invalidar reinicio y cachés

multiDexEnabled true

AgregandomavenLocal() ymavenCentral()

Este es el nivel del módulo build.gradle archivo

android {
        compileSdkVersion 27
        defaultConfig {
            applicationId "com.developers.a_g.designapp"
            minSdkVersion 15
            targetSdkVersion 27
            buildToolsVersion '27.1.1'
            versionCode 1
            versionName "1.0"
            multiDexEnabled true
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }

dependencies {
    implementation fileTree( dir: 'libs',include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:design-v7:27.1.1'
    implementation 'com.rengwuxian.materialedittext:library:2.1.4'
    implementation 'com.szagurskii:patternedtextwatcher:0.5.0'
    implementation 'com.github.d-max:spots-dialog:0.7@aar'
    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
}


 android {
        compileSdkVersion 27
        defaultConfig {
            applicationId "com.developers.a_g.designapp"
            minSdkVersion 15
            targetSdkVersion 27
            buildToolsVersion '27.1.1'
            versionCode 1
            versionName "1.0"
            multiDexEnabled true
            testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            }
        }
    }

dependencies {
    implementation fileTree( dir: 'libs',include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.android.support:cardview-v7:27.1.1'
    implementation 'com.android.support:design-v7:27.1.1'
    implementation 'com.rengwuxian.materialedittext:library:2.1.4'
    implementation 'com.szagurskii:patternedtextwatcher:0.5.0'
    implementation 'com.github.d-max:spots-dialog:0.7@aar'
    implementation 'com.squareup.retrofit2:retrofit:2.3.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
}

Este es el nivel de proyecto build.gradle archivo

    buildscript {

        repositories {

            jcenter()
            google()


            maven {
                url "https://maven.google.com"
            }
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:3.1.3'
        }
    }

    allprojects {
        repositories {
            google()
            jcenter()
        }
    }

    task clean(type: Delete) {
        delete rootProject.buildDir
    }