Android开发：使用BottomNavigationView出现Cannot resolve class错误

我在Android应用开发中使用BottomNavigationView组件时，遇到错误提示：Cannot resolve class com.google.android.material.bottomnavigation.BottomNavigationView，错误出现在布局文件的BottomNavigationView声明位置。以下是相关代码：

Gradle配置 #

apply plugin: 'com.android.application'

android {
compileSdkVersion 34
buildToolsVersion '34.0.0'

defaultConfig {
    applicationId "com.pfsol.tfpmobileassetsmanagament"
    minSdkVersion 21
    targetSdkVersion 34
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
    vectorDrawables.useSupportLibrary = true
    multiDexEnabled true
}

tasks.withType(JavaCompile).configureEach{
    options.fork = true
    options.forkOptions.jvmArgs +=[
            '--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED',
            '--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED',
            '--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED']
}
buildTypes {
    release {
        minifyEnabled false
        debuggable false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

lintOptions {
    checkReleaseBuilds false
}

namespace 'com.pfsol.tfpmobileassetsmanagament'
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
androidTestImplementation('androidx.test.espresso:espresso-core:3.5.1', {
    exclude group: 'com.android.support', module: 'support-annotations'
})
implementation 'androidx.appcompat:appcompat:1.6.1'
implementation 'com.google.android.material:material:1.11.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
implementation 'com.jakewharton:butterknife:10.2.3'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'androidx.vectordrawable:vectordrawable:1.1.0'
implementation 'com.squareup.picasso:picasso:2.71828'
testImplementation 'junit:junit:4.13.2'
implementation 'androidx.recyclerview:recyclerview:1.3.2'
implementation 'com.google.zxing:core:3.4.1'
implementation 'com.journeyapps:zxing-android-embedded:3.6.0'
annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.3'
implementation 'com.squareup.okhttp3:logging-interceptor:3.9.1'
//implementation 'com.github.luongvo:GmailBackground:2.0.2'
implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0' // Use the appropriate version
implementation 'androidx.drawerlayout:drawerlayout:1.2.0'  // Use the appropriate version
// implementation 'com.intsig.camscanner:CamScannerSdk:4.1.0.20190920'
implementation 'io.github.mayuce:AndroidDocumentScanner:1.6.1'
// required to avoid crash on Android 12 API 31
implementation 'androidx.work:work-runtime-ktx:2.9.0'
implementation 'com.android.billingclient:billing:6.1.0'
implementation 'com.google.android.material:material:1.11.0'
}

布局文件 #

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">

<!-- Your other layout elements -->

<com.google.android.material.bottomnavigation.BottomNavigationView
    android:id="@+id/bottom_navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    app:menu="@menu/activity_main_drawer" />


 </androidx.constraintlayout.widget.ConstraintLayout>

解决步骤 #

• 重新同步Gradle依赖：点击Android Studio右上角的Sync Project with Gradle Files按钮，确保Material库正确下载并引入项目。
• 清理并重建项目：执行Build > Clean Project，随后执行Build > Rebuild Project，解决编译缓存导致的类识别问题。
• 清除IDE缓存：打开File > Invalidate Caches...，选择Invalidate and Restart，修复Android Studio的类索引异常。
• 修正布局约束（可选）：由于BottomNavigationView在ConstraintLayout中，android:layout_gravity="bottom"不生效，需添加ConstraintLayout约束使其固定在底部：

  <com.google.android.material.bottomnavigation.BottomNavigationView
      android:id="@+id/bottom_navigation"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      app:menu="@menu/activity_main_drawer"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintLeft_toLeftOf="parent"
      app:layout_constraintRight_toRightOf="parent" />
  

内容的提问来源于stack exchange，提问作者Moeez