无法在Gradle中编译新材料库

Question

我无法添加新的Material Design库。当我添加compile 'com.google.android.material:material:1.0.0-alpha1'并同步项目时，我收到以下两个错误：

error: resource android:attr/fontVariationSettings not found.
error: resource android:attr/ttcindex not found.

我的build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "rockthesport.com.pruebasmaterial"
        minSdkVersion 19
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        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:1.1.0'
    compile 'com.google.android.material:material:1.0.0-alpha1'
    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'
}

有什么建议吗？

谢谢!

Answer 1

要使用新的Material Components library 'com.google.android.material:material:1.0.0-alpha1'，您必须使用

android {
        compileSdkVersion 'android-P'

        defaultConfig {
            targetSdkVersion 'P'
        }
        ...
    }