Not Compatible with AndroidX (Empty screen)

[geekykant]

Not Compatible with AndroidX (Empty screen)

[Kalzeroth]

I think you have to set the text in code. I'm using AndroidX and this library and I do have output in the emulator/device screen. No live preview though as you pointed out.

_expandableTextView?.text = getString(R.string.tos_1)

<com.ms.square.android.expandabletextview.ExpandableTextView
                android:id="@+id/_expandableTextView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="16dp"
                android:layout_marginEnd="16dp"
                expandableTextView:animAlphaStart="1"
                expandableTextView:animDuration="300"
                expandableTextView:maxCollapsedLines="2">

                <LinearLayout
                    android:layout_marginTop="16dp"
                    android:layout_marginBottom="16dp"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal">

                    <TextView
                        android:id="@id/expandable_text"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:textColor="@color/white"
                        android:textSize="16sp" />

                    <ImageButton
                        android:id="@id/expand_collapse"
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:layout_gravity="center_vertical|end"
                        android:background="@android:color/transparent"
                        android:padding="16dp"
                        android:src="@drawable/ic_keyboard_arrow_down_white_24dp"
                        android:tint="@color/white" />

                </LinearLayout>

</com.ms.square.android.expandabletextview.ExpandableTextView>