Java – Click to expand the ListItem to the new View

I have a ListView like this with some text

And I want to expand each project to like this

I saw this answer (How can I make a cell in a ListView in Android expand and contract vertically when it’s touched?), here it has not changed to the new View, only changed the height.

Update: list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/container1"
android:layout_width="match_parent"
android:layout_height="100dp"
android:clickable="true"
android:background="@drawable/list_selected">

<RelativeLayout

android:id="@+id/relaboveline1"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<View
        android:id="@+id/sidebar"
        android:layout_width="15dp"
        android:layout_height="match_parent"
        android:background="#4ED6CA" />

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingTop="5dp"
        android:paddingBottom="5dp"
        android:weightSum="100"
        android:layout_toRightOf="@+id/sidebar"
        android:layout_toEndOf="@+id/sidebar">

<LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="20">

<RelativeLayout
                android:id="@+id/cal"
                android:layout_width="60dp"
                android:layout_height="match_parent">

<TextView
                    android:id="@+id/date"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="22"
                    android:textColor="#FF8801"
                    android:textStyle="bold"
                    android:layout_centerHorizontal="true"
                    android:textSize="35sp"
                    android:layout_alignParentTop="true" />

<TextView
                    android:id="@+id/month"
                    android:textColor="#FF8801"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerHorizontal="true"
                    android:layout_below="@+id/date"
                    android:textSize="20sp"
                    android:text="MAY" />

<TextView
                    android:id="@+id/year"
                    android:textColor="#FF8801"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerHorizontal="true"
                    android:layout_below="@+id/month"
                    android:textSize="20sp"
                    android:text="2015" />
            </RelativeLayout>

<View
                android:id="@+id/divider"
                android:layout_width="1dp"
                android:layout_height="match_parent"
                android:layout_toRightOf="@+id/cal"
                android:layout_toEndOf="@+id/cal"
                android:background="#DADADA" />
        </LinearLayout>

<LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="60">

<RelativeLayout
                android:id="@+id/content"

android:layout_width="200dp"
                android:paddingTop="5dp"

android:paddingLeft="8dp"
                android:layout_height="match_parent">

<TextView
                    android:id="@+id/title"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textSize="18sp"
                    android:textStyle="bold"
                    android:text="High School Graduation" />

<TextView
                    android:id="@+id/contentdesc"
                    android:layout_width="wrap_content"
                    android:layout_marginTop="10dp"

android:layout_height="wrap_content"
                    android:layout_below="@+id/title"
                    android:text="@string/dummy" />
            </RelativeLayout>
        </LinearLayout>

<LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="20">

<RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:paddingTop="10dp"
               >

<TextView

android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:textSize="18sp"
                    android:layout_centerHorizontal="true"
                    android:textStyle="bold"

android:text="5B"
                    android:id="@+id/classDiv" />

<RelativeLayout
                    android:layout_below="@+id/classDiv"
                    android:layout_width="40dp"
                    android:layout_height="40dp"
                    android:layout_centerHorizontal="true">

<ImageView
                        android:layout_width="20dp"
                        android:layout_height="20dp"
                        android:layout_centerInParent="true"
                        android:src="@drawable/star_yellow" />
                </RelativeLayout>
            </RelativeLayout>
        </LinearLayout>
    </LinearLayout>
</RelativeLayout>

<View
    android:id="@+id/line2"
    android:layout_width="match_parent"
    android:layout_height="0.5dp"
    android:layout_below="@+id/relaboveline1"
    android:background="#DADADA" />

You can use ExpandableListView:

1. You define a custom layout for child (details when you click the row).

2. You define a public class ExpandableAdapter extends BaseExpandableListAdapter

3. Overriding methods

   public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
....
}

   Where to implement detailed layouts (sub-layouts).

4. Overriding methods

   public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
...
}

   Implement a layout similar to a ListView in it.

5. Set up a custom adapter in your ExpandableListView instance

If you want to know more, check out my post here http://www.survivingwithandroid.com/2013/01/android-expandablelistview-baseexpandablelistadapter.html