ExpandableTextView

Fully customized TextView Android which can expanded and collapsed with animation

Getting Started

This library was designed from here
This thing can be placed inside RecyclerView

Preview

How to Install

This library is stored in jcenter, if you use Gradle, then just add compile nb.scode:ExpandableTextView:version in your gradle module

How to Use

example in XML :

<nb.scode.lib.ExpandableTextView
        android:id="@+id/exp_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:etv_animationTime="5"
        app:etv_expandLines="3"
        app:etv_showLine="false"
        app:etv_textContentSize="12sp"
        app:etv_expandBitmap="@drawable/ic_keyboard_arrow_right_black_24dp"
        app:etv_shrinkBitmap="@drawable/ic_keyboard_arrow_left_black_24dp"
        app:etv_textContentColor="@android:color/darker_gray"
        app:etv_textExpand="More"
        app:etv_textShrink="Less"
        app:etv_textStateColor="@android:color/holo_green_dark"
        />

Use in RecyclerView

If you use it as an item in RecyclerView, you may have to make sure your RecyclerView Adapter's onBindViewHolder looks like this to avoid Unexpected Shrink/Expand State.

@Override public void onBindViewHolder(ViewHolder holder, final int position) {
    //record its state
    holder.expandableTextView.setOnStateChangeListener(
        new ExpandableTextView.OnStateChangeListener() {
          @Override public void onStateChange(boolean isShrink) {
            ContentItem contentItem = itemList.get(position);
            contentItem.setShrink(isShrink);
            itemList.set(position, contentItem);
          }
        });
    holder.expandableTextView.setText(itemList.get(position).getContent());
    //important! reset its state as where it left
    holder.expandableTextView.resetState(itemList.get(position).isShrink());
  }

Or maybe you can check it in sample to get the full code.

Attributes Support as below

Attributes	Format	Description
etv_expandLines	integer	Minimum lines to be shown when in Shrink state
etv_expandBitmap	reference	Image for expand
etv_shrinkBitmap	reference	Image for shrink
etv_textContentColor	color	Color for the content
etv_textContentSize	dimension	Size of text content(in sp), default is 14sp
etv_textExpand	string	Text status to be shown in Shrink state
etv_textShrink	string	Text status to be shown in Expand state
etv_textStateColor	color	Color for related status state
etv_showLine	boolean	Show line at bottom
etv_animationTime	integer	Speed controller for animation (bigger = slower animation)

License

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.