Android Expandable Text View

Requirements

API Level 8 (Froyo) and above.

Setup

The library is pushed to Maven Central as an AAR, so you just need to add the followings to yourbuild.gradle file:

dependencies {
    compile 'com.ms-square:expandableTextView:0.1.3'
}

Usage

Using the library is really simple, just look at the source code of the provided sample. (Look at the SampleTextListAdapter.java for the use within a ListView)

The important thing to note is that the view Ids for TextView and ImageButton must be set to "@id/expandable_text" and "@id/expand_collapse" respectively for this library to work.

Also, you can optionally set the following attributes in your layout xml file to customize the behavior of the ExpandableTextView.

1. maxCollapsedLines (defaults to 8) The maximum number of text lines allowed to be shown when the TextView gets collapsed

2. animDuration (defaults to 300ms) Duration of the Animation for the expansion/collapse

3. animAlphaStart (defaults to 0.7f) Alpha value of the TextView when the animation starts (NOTE) Set this value to 1 if you want to disable the alpha animation.

4. expandDrawable Customize a drawable set to ImageButton to expand the TextView

5. collapseDrawable Customize a drawable set to ImageButton to collapse the TextView