Cannot Resolve FacebookSdk in Android Studio - firebase

Question

I am stuck in my code while I am implementing Facebook login through firebase.
I followed the documentation precisely, however it is not recognizing facebook SDK despite the fact that I can see all Facebook-related libraries in the project's library section.
Here you can see my build.gralde(:app) ;
plugins {
id 'com.android.application'
id 'com.google.gms.google-services'
}
android {
compileSdkVersion 30
buildToolsVersion "30.0.3"
defaultConfig {
applicationId "com.mycompany.myapp"
minSdkVersion 21
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
implementation 'androidx.appcompat:appcompat:1.4.0-alpha02'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
implementation 'com.google.firebase:firebase-auth:21.0.1'
implementation 'com.google.firebase:firebase-database:20.0.1'
implementation 'com.facebook.android:facebook-android-sdk:12.2.0'
implementation platform('com.google.firebase:firebase-bom:28.4.0')
implementation 'com.google.firebase:firebase-auth'
implementation 'com.google.android.gms:play-services-auth:19.2.0'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
here my build.gradle(:module) ;
buildscript {
repositories {
google()
jcenter()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:4.1.1"
classpath 'com.google.gms:google-services:4.3.10'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
my Manifest file;
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mycompany.myapp">
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_myapp_logo"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MYAPP">
<activity android:name=".main_activities.LoginTrialActivity"></activity>
<activity android:name=".user_activities.ForgotPasswordActivity" />
<activity android:name=".user_activities.UserDetails" />
<activity android:name=".SplashScreenActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".user_activities.SigninActivity" />
<activity android:name=".user_activities.SignupActivity" />
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="#string/facebook_app_id"/>
<meta-data android:name="com.facebook.sdk.ClientToken" android:value="#string/facebook_client_token"/>
</application>
</manifest>
I also downloaded facebook-android-sdk-4.42.0 which I inserted to nowhere and never used... I did not understand how to use it.
finally, please see attached image to see I actually have facebook libraries.
Would you please kindly help?

Answer 1

Ok I solved the problem, I changed implementation 'com.facebook.android:facebook-android-sdk:12.2.0' to 'implementation 'com.facebook.android:facebook-android-sdk:4.42.0' and problem is gone. This SDK version is the one that I downloaded to my computer from "developers.facebook". Does anybody knows why?