在项目或库中找不到androidx.cardview.widget.cardview

Question

即使我将androidx cardview添加到dependencies中，我也无法使用它。我试着清理和重建这个项目，但仍然不起作用。这是梯度文件，我做错了什么？

android {
compileSdkVersion 29
buildToolsVersion "30.0.2"
defaultConfig {
applicationId "com.android.camdrive"
minSdkVersion 23
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
def lifecycle_version = "2.2.0"
def room_version = "2.2.5"
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'com.google.android.material:material:1.2.1'
implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
implementation "androidx.lifecycle:lifecycle-livedata:$lifecycle_version"
annotationProcessor "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
implementation "androidx.room:room-runtime:$room_version"
annotationProcessor "androidx.room:room-compiler:$room_version"
testImplementation 'junit:junit:4.13.1'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}

Answer 1

为什么不使用MaterialCardView？

<com.google.android.material.card.MaterialCardView
...
android:clickable="true"
android:focusable="true"
android:checkable="true">
...
</com.google.android.material.card.MaterialCardView>

然后在xml布局中使用

<androidx....