title: Cannot resolve symbol 'appcompat'
body: <p>I'm trying to import this 3 libraries: ActivityCompat, AppCompatActivity, ContextCompat
  and turn into errors like: Cannot resolve symbol 'appcompat' and Cannot resolve symbol 'core'. I tried: Clean Project and Invalidate Caches.</p>
  <p><strong>MainActivity.java</strong></p>
  <pre><code>import androidx.appcompat.app.ActivityCompat;
  import androidx.appcompat.app.AppCompatActivity;
  import androidx.core.content.ContextCompat;
  </code></pre>
  <p>Here is my build.gradle file:</p>
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 32
  defaultConfig {
      applicationId &quot;com.limeparallelogram.imgtransmitproject&quot;
      minSdkVersion 15
      targetSdkVersion 32
      versionCode 1
      versionName &quot;1.0&quot;
      testInstrumentationRunner &quot;android.support.test.runner.AndroidJUnitRunner&quot;
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.core:core-ktx:+'
    implementation 'androidx.appcompat:appcompat:1.4.1'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
   }
  </code></pre>