Disable BottomNavigationView shift mode, show menu item titles and downgrade compile SDK version

app/build.gradle

@@ -5,11 +5,11 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 27
     defaultConfig {
         applicationId "io.eelo.appinstaller"
         minSdkVersion 21
-        targetSdkVersion 28
+        targetSdkVersion 27
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -25,9 +25,9 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'com.android.support:appcompat-v7:28.0.0-rc01'
+    implementation 'com.android.support:appcompat-v7:27.1.1'
     implementation 'com.android.support.constraint:constraint-layout:1.1.2'
-    implementation 'com.android.support:design:28.0.0-rc01'
+    implementation 'com.android.support:design:27.1.1'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'com.android.support.test:runner:1.0.2'
     androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

app/src/main/java/io/eelo/appinstaller/MainActivity.kt

@@ -2,11 +2,40 @@ package io.eelo.appinstaller
 
 import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
+import android.support.design.internal.BottomNavigationItemView
+import android.support.design.internal.BottomNavigationMenuView
+import android.support.design.widget.BottomNavigationView
+import android.annotation.SuppressLint
+import kotlinx.android.synthetic.main.activity_main.*
 
 class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        removeShiftMode(bottom_navigation_view)
     }
+
+    @SuppressLint("RestrictedApi")
+    private fun removeShiftMode(bottomNavigationView: BottomNavigationView) {
+        val menuView = bottomNavigationView.getChildAt(0) as BottomNavigationMenuView
+        try {
+            val mShiftingMode = menuView.javaClass.getDeclaredField("mShiftingMode")
+            mShiftingMode.isAccessible = true
+            mShiftingMode.setBoolean(menuView, false)
+            mShiftingMode.isAccessible = false
+        } catch (e: NoSuchFieldException) {
+            e.printStackTrace()
+        } catch (e: IllegalAccessException) {
+            e.printStackTrace()
+        }
+
+        for (i in 0 until menuView.childCount) {
+            val itemView = menuView.getChildAt(i) as BottomNavigationItemView
+            itemView.setShiftingMode(false)
+            itemView.setChecked(itemView.itemData.isChecked)
+        }
+    }
+
 }