muzafakar

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

    <ImageView
        android:id="@+id/img"
        android:layout_width="wrap_content"

muzafakar

android{
    ....
    androidExtensions {
        experimental = true
    }
}

muzafakar

<ConstraintLayout>
  <ViewPager/>
  <TabLayout/>
</ConstraintLayout>

muzafakar

<!--On-->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape
            android:innerRadius="0dp"
            android:shape="ring"
            android:thickness="4dp"
            android:useLevel="false">
            <solid android:color="@color/colorPrimary" />
        </shape>

muzafakar

class OnBoardingItemFragment : Fragment() {

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
            inflater.inflate(R.layout.fragment_on_boarding_item, container, false)

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        arguments?.let {
            val animationId = it.getInt(LOTTIE)

muzafakar

class AdpOnBoarding(fm: FragmentManager, behavior: Int) : FragmentPagerAdapter(fm, behavior) {
    private val fragments = mutableListOf<Fragment>()

    fun addItem(fragment: Fragment) {
        fragments.add(fragment)
        notifyDataSetChanged()
    }

    override fun getItem(position: Int): Fragment = fragments[position]

muzafakar

class MainActivity : AppCompatActivity() {
    private lateinit var adpOnBoarding: AdpOnBoarding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        adpOnBoarding = AdpOnBoarding(supportFragmentManager, FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT)

        tlDotsContainer.setupWithViewPager(vpOnBoarding)
        vpOnBoarding.adapter = adpOnBoarding

muzafakar

<?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"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="8dp">

    <!--Kalo error ganti ke ImageView-->
    <de.hdodenhof.circleimageview.CircleImageView

muzafakar

Africa/Abidjan
Africa/Accra
Africa/Addis_Ababa
Africa/Algiers
Africa/Asmara
Africa/Asmera
Africa/Bamako
Africa/Bangui
Africa/Banjul
Africa/Bissau

muzafakar

public class Chat {
    private String username;
    private String message;

    public Chat() {
        // Default Constructor kosong
    }

    public Chat(String username, String message) {
        this.username = username;