Android UI bullets

AcademicQualificationAdapter

package com.tutored.tutored.ui.userprofile.academicsQualification;

import android.view.View;

import com.pask.data.model.AcademicQualification;
import com.pask.data.model.dto.MessageEventDTO;
import com.pask.ui.userprofile.ExperienceFragment;
import com.pask.ui.userprofile.ExperienceRecyclerViewAdapter;
import com.pask.utils.TextUtils;

import org.greenrobot.eventbus.EventBus;

import java.util.List;

/**
 * Created by pasquale on 23/05/2017.
 */

public class AcademicQualificationAdapter extends ExperienceRecyclerViewAdapter<AcademicQualification> {

    public AcademicQualificationAdapter(List<AcademicQualification> items) {
        super(items);
    }

    @Override
    public void onBindViewHolder(final ExperienceRecyclerViewAdapter.VH holder, int position) {
        AcademicQualification academicQualification = super.getItem(position);

        holder.mItem = academicQualification;
        holder.mTitleView.setText(academicQualification.getUniversityName());
        holder.mContentView.setText(academicQualification.getFacultyName()+" - "+academicQualification.getCourseName());
        holder.mSubContentView.setText(TextUtils.getIntervalFromDate(academicQualification.getStartedAt(),academicQualification.getFinishedAt()));

        if (holder instanceof ExperienceRecyclerViewAdapter.VHItem){
            ((ExperienceRecyclerViewAdapter.VHItem)holder).mDownSegment.setVisibility(View.VISIBLE);
            ((ExperienceRecyclerViewAdapter.VHItem)holder).mNode.setVisibility(View.VISIBLE);
            ((ExperienceRecyclerViewAdapter.VHItem)holder).mUpSegment.setVisibility(View.VISIBLE);
            if(position == mValues.size()-1)
                ((ExperienceRecyclerViewAdapter.VHItem)holder).mDownSegment.setVisibility(View.GONE);
        }
        else{
            ((ExperienceRecyclerViewAdapter.VHHeader)holder).mNodePrimary.setVisibility(View.VISIBLE);
            if(mValues.size()>1)
                ((ExperienceRecyclerViewAdapter.VHHeader)holder).mDownSegment.setVisibility(View.VISIBLE);
        }

        holder.mView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                EventBus.getDefault().post(new MessageEventDTO<AcademicQualification>().withTopic(ExperienceFragment.REQ_ACADEMIC).withItem((AcademicQualification)holder.mItem));
            }
        });
    }
}

ExperienceRecyclerViewAdapter

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.pask.R;

import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

public abstract class ExperienceRecyclerViewAdapter<T> extends RecyclerView.Adapter<ExperienceRecyclerViewAdapter.VH> {
    private static final int TYPE_HEADER = 0;
    private static final int TYPE_ITEM = 1;
    protected final List<T> mValues;
    protected Context mContext;

    public ExperienceRecyclerViewAdapter(List items) {
        mValues = items;
    }

    @Override
    public ExperienceRecyclerViewAdapter.VH onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.fragment_experience, parent, false);
        mContext = parent.getContext();
        if (viewType == TYPE_ITEM) {
            return new VHItem(view);
        } else {
            return new VHHeader(view);
        }
    }

    @Override
    public int getItemCount() {
        return mValues.size();
    }

    @Override
    public int getItemViewType(int position) {
        if (isPositionHeader(position))
            return TYPE_HEADER;

        return TYPE_ITEM;
    }

    private boolean isPositionHeader(int position) {
        return position == 0;
    }

    protected T getItem(int position) {
        return mValues.get(position);
    }


    public class VHItem extends VH {
        @BindView(R.id.up_segment)
        public View mUpSegment;
        @BindView(R.id.node)
        public View mNode;

        public T mItem;

        public VHItem(View view) {
            super(view);
            ButterKnife.bind(this,view);
        }

        @Override
        public String toString() {
            return super.toString() + " '" + mContentView.getText() + "'";
        }
    }

    public class VH extends RecyclerView.ViewHolder{
        public final View mView;
        @BindView(R.id.title)
        public TextView mTitleView;
        @BindView(R.id.content)
        public TextView mContentView;
        @BindView(R.id.sub_content)
        public TextView mSubContentView;
        @BindView(R.id.down_segment)
        public View mDownSegment;
        public T mItem;

        public VH(View view) {
            super(view);
            mView = view;
            ButterKnife.bind(this,view);
        }
    }

    public class VHHeader extends VH {
        @BindView(R.id.node_primary)
        public View mNodePrimary;
        @BindView(R.id.node)
        public View mNode;
        public T mItem;

        public VHHeader(View view) {
            super(view);
            ButterKnife.bind(this,view);
        }

        @Override
        public String toString() {
            return super.toString() + " '" + mContentView.getText() + "'";
        }
    }
}

fragment_experience.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="80dp"
    android:background="?android:attr/selectableItemBackground">

    <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="@dimen/text_margin"
        android:layout_marginEnd="8dp"
        android:layout_marginTop="8dp"
        android:textSize="12sp"
        app:layout_constraintBottom_toTopOf="@id/content"
        app:layout_constraintTop_toTopOf="parent"
        tools:text="Sapienza Università di Roma"
        app:layout_constraintLeft_toRightOf="@+id/guideline_vertical" />

    <TextView
        android:id="@+id/content"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="@dimen/text_margin"
        android:textAppearance="?attr/textAppearanceListItem"
        app:layout_constraintBottom_toTopOf="@+id/sub_content"
        app:layout_constraintLeft_toLeftOf="@+id/title"
        app:layout_constraintTop_toBottomOf="@+id/title"
        app:layout_constraintRight_toRightOf="parent"
        android:maxLines="2"
        android:ellipsize="end"
        tools:text="Laurea Magistrale in Architettura indirizzo Architettura del paesaggio" />

    <TextView
        android:id="@+id/sub_content"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="@dimen/text_margin"
        android:textSize="12sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="@+id/title"
        app:layout_constraintTop_toBottomOf="@+id/content"
        tools:text="Mar 2014 - Dic 2015" />

    <View
        android:id="@+id/up_segment"
        android:layout_width="2dp"
        android:layout_height="40dp"
        android:layout_alignParentTop="true"
        android:layout_marginStart="@dimen/text_margin"
        android:background="@color/mediumGray"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toTopOf="@+id/guideline_horizontal"
        android:visibility="invisible"/>

    <View
        android:id="@+id/down_segment"
        android:layout_width="2dp"
        android:layout_height="40dp"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:background="@color/mediumGray"
        app:layout_goneMarginStart="@dimen/text_margin"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="@+id/up_segment"
        app:layout_constraintTop_toBottomOf="@+id/guideline_horizontal"
        android:visibility="invisible"/>

    <View
        android:id="@+id/node_primary"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:background="@drawable/double_point"
        app:layout_goneMarginStart="@dimen/text_margin"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginStart="7dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:visibility="gone"
        />

    <android.support.constraint.Guideline
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/guideline_vertical"
        app:layout_constraintGuide_begin="16dp"
        android:orientation="vertical" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline_horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_begin="40dp" />

    <View
        android:id="@+id/node"
        android:layout_width="12dp"
        android:layout_height="12dp"
        android:background="@drawable/point"
        app:layout_goneMarginStart="@dimen/text_margin"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginStart="11dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:visibility="invisible"/>


</android.support.constraint.ConstraintLayout>