android - 无法解析符号“ViewCompat”

Question

完整的 gradle 文件，甚至无法解析符号 'AppCompatActivity'。不明白怎么了。

已经尝试过的选项 :: 1) 清理并重建 2) 无效/捕获并重新启动

apply plugin: 'com.android.application'
apply plugin: 'com.jfrog.bintray'

repositories {
    jcenter()
    maven {
        url "https://jitpack.io"
    }
}

android {
    compileSdkVersion 27
    buildToolsVersion "27.0.3"

    defaultConfig {
        applicationId "com.example.app"
        minSdkVersion 19
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    testImplementation 'junit:junit:4.12'
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:support-v4:27.1.1'
    implementation 'com.android.support:design:27.1.1'
    implementation project(':blocklylib-core')
    implementation project(':blocklylib-vertical')
}

标签： androidandroid-support-librarysupport-v4

Answer 1

对于 SDK 27 及更高版本，请使用import androidx.core.view.ViewCompat;