app/build.gradle

@@ -5,12 +5,16 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 28
     buildToolsVersion "29.0.2"
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
     defaultConfig {
         applicationId "pl.edu.amu.wmi.socialaggregator"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -26,6 +30,8 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:appcompat-v7:28.1.0'
+    implementation 'com.android.support:design:28.1.0'
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.1.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

app/src/main/java/pl/edu/amu/wmi/socialaggregator/activity/MainActivity.kt

@@ -33,6 +33,11 @@ class MainActivity : AppCompatActivity() {
                 }
         )
 
+    }
+
+    override fun onResume() {
+        super.onResume()
+
         connectedSocialsRecyclerView.apply {
             layoutManager = LinearLayoutManager(this@MainActivity)
             adapter = SocialWithImageRecycler(SocialPlatformsManager.getLoggedIn(this@MainActivity),