Text Selectable Not Working

[sulemankhants]

Xml Code For PinEntryEditText I have used in project
<com.alimuzaffar.lib.pin.PinEntryEditText
android:id="@+id/txt_pin_entry1"
android:layout_width="308dp"
android:layout_height="48dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="32dp"
android:background="@null"
android:cursorVisible="true"
android:digits="1234567890"
android:inputType="number"
android:maxLength="4"
android:textIsSelectable="false"
android:textSize="24dp"
app:pinAnimationType="fromBottom"
app:pinBackgroundDrawable="@drawable/bg_pin"
app:pinBackgroundIsSquare="true"
app:pinCharacterSpacing="4dp"
app:pinTextBottomPadding="16dp"
tools:ignore="SpUsage" />

I am unable to select 2nd,3rd and 4th edit text for editing,it is only allowing to edit edit text one