好吧，我从一年前的项目开始迁移到 AndroidX(从那时起就没有动过)，我在资源和 gradle 构建方面遇到了问题。我完全迷失了新的命名空间，我改变了其中的一些，我升级了 AndroidStudio 告诉我的所有东西，但仍然无法识别我项目中的东西。我将在此处粘贴两个 gradle，并将错误放在下方。

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {

    repositories {
        google()
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'


        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

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

模块

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion "28.0.3"
    defaultConfig {
        applicationId "com.example.usuario.tm"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test:runner:1.1.0-alpha3"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        androidTestImplementation('androidx.test.espresso:espresso-core:3.1.0-alpha3', {
            exclude group: 'com.android.support', module: 'support-annotations'
        })
        implementation 'androidx.appcompat:appcompat:1.0.0'
        implementation 'com.android.support.constraint:constraint-layout:1.1.3'
        implementation 'androidx.legacy:legacy-support-v4:1.0.0'
        implementation 'com.google.android.material:material:1.0.0'
        implementation 'com.google.gms:google-services:4.1.0'
        implementation 'com.google.android.gms:play-services-auth:16.0.1'
        testImplementation 'junit:junit:4.12'
    }
}

apply plugin: 'com.android.application'
apply plugin: 'maven'

错误

Android resource linking failed
Output:  C:\Users\Xrless\Desktop\Programing\TN\TM\app\src\main\res\layout\activity_principal.xml:34: error: attribute android:style not found.
error: failed linking file resources.

Command: C:\Users\Xrless\.gradle\caches\transforms-1\files-1.1\aapt2-3.2.1-4818971-windows.jar\cf456f090f0725907522fb6d2bec3322\aapt2-3.2.1-4818971-windows\aapt2.exe link -I\
        C:\Users\Xrless\AppData\Local\Android\Sdk\platforms\android-28\android.jar\
        --manifest\
        C:\Users\Xrless\Desktop\Programing\TN\TM\app\build\intermediates\merged_manifests\debug\processDebugManifest\merged\AndroidManifest.xml\
        -o\
        C:\Users\Xrless\Desktop\Programing\TN\TM\app\build\intermediates\processed_res\debug\processDebugResources\out\resources-debug.ap_\
        -R\
        @C:\Users\Xrless\Desktop\Programing\TN\TM\app\build\intermediates\incremental\processDebugResources\resources-list-for-resources-debug.ap_.txt\
        --auto-add-overlay\
        --java\
        C:\Users\Xrless\Desktop\Programing\TN\TM\app\build\generated\not_namespaced_r_class_sources\debug\processDebugResources\r\
        --custom-package\
        com.example.usuario.tm\
        -0\
        apk\
        --output-text-symbols\
        C:\Users\Xrless\Desktop\Programing\TN\TM\app\build\intermediates\symbols\debug\R.txt\
        --no-version-vectors
Daemon:  AAPT2 aapt2-3.2.1-4818971-windows Daemon #0

最佳答案

您的 activity_principal.xml 中存在错误。尝试改变:

android:style

到

style

还需要添加

android.useAndroidX=true

如果您想使用 androidX 库而不是支持库，请添加到您的 gradle.properties 文件。

关于android - 迁移到 AndroidX，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52960640/