如何修复：错误：无法解决：“ androidx.cardview：cardview：1.0.0”

Question

我正在使用 androidx库开发新的android应用程序，并且需要在布局中使用 cardview 。
所以我尝试将cardview库添加到我的项目中，但出现此错误ERROR: Failed to resolve: cardview

我检查了Failed: com.android.support:cardview-v7:26.0.0 android的答案，但对我没有帮助

之类的答案

• 在google()之前添加jcenter()
• 将maven { url "https://maven.google.com" }添加到repositories

---

build.gradle（项目）

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.chavosh.porterageapp"
        minSdkVersion 14
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.google.android.gms:play-services-maps:16.1.0'
    implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
    testImplementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.android.material:material:1.0.0'
    testImplementation 'junit:junit:4.12'

    // recycler view
    implementation 'androidx.recyclerview:recyclerview:1.1.0-alpha04'

    implementation 'androidx.cardview:cardview:1.0.0'

}

build.gradle（moudle）

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

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.21"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
        maven { url 'https://jitpack.io' }
        maven { url "https://maven.google.com" }
    }
}

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

gradle.properties有这两行

android.useAndroidX=true
android.enableJetifier=true

Answer 1

只需删除它们！

只有这3个，您可以同时使用RecyclerView和CardView以及加号：ConstraintLayout

implementation 'androidx.appcompat:appcompat:1.1.0-alpha04'
implementation 'androidx.core:core-ktx:1.1.0-alpha05'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

Answer 2

添加MaterialComponents：

 {
  "HEADER": {
    "TAG": "PROJECT",
    "APP_VERSION": 91
  },
  "COMPONENTS": [
   {
    "ID": 34509537,
    "TAG": "BUFFER_GATE",
    "X": 870.0,
    "Y": 450.0,
    "INPUTS": [
     {
      "CONNECTOR_ID": 0,
      "OTHER_COMPONENT": 33017225,
      "OTHER_CONNECTOR_ID": 47
    }
  ],
  "ARGUMENTS": null
},...

查看此内容：https://stackoverflow.com/a/57833454/11720798

Answer 3

在调色板/布局的CardView中打勾下载以解决此问题