An Expandable TextView for Android written in Kotlin. The main ideia was study how create a library in Android and deploy on Maven Central Repository.

• Demo project
• Getting started
• Usage
  • Supported features
• Documentation
• Contributing
• License
• Acknowledgments

Take a look at the demo project.

The library is included in Maven Central Repository, so just add this dependency to your module level gradle.build:

dependencies {
    implementation 'io.github.glailton.expandabletextview:expandabletextview:$LatestVersion'
}

Current latest version is:

• collapsedLines -> number of visible lines
• isExpanded -> state of textview (default is false)
• animationDuration -> duration of the animation in ms (Will be implemented in a future version)
• readMoreText -> text to use instead of default ellipses
• readLessText -> text to use instead of default ellipses
• expandType -> type of expandable layout, could be layout or popup
• ellipsizeTextColor -> color of ellipsize text
• isUnderlined -> underline the ellipsize text

Then use ExpandableTextView just as you would use any other TextView.

Xml snippet:

<io.github.glailton.expandabletextview.ExpandableTextView
        android:id="@ id/expand_tv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        expandableTextView:collapsedLines="3"
        expandableTextView:animDuration="500"
        expandableTextView:readMoreText="Leia mais"
        expandableTextView:readLessText="Leia menos"
        expandableTextView:textMode="line"
        expandableTextView:isExpanded="true"
        app:expandType="layout"
        android:text="@string/very_long_text" />

or programmatically

        binding.expandTvProg
          .setAnimationDuration(500)
          .setReadMoreText("View More")
          .setReadLessText("View Less")
          .setCollapsedLines(3)
          .setIsExpanded(true)
          .setIsUnderlined(true)
          .setExpandType(EXPAND_TYPE_POPUP)
          .setEllipsizedTextColor(ContextCompat.getColor(this, R.color.purple_200))

        binding.expandTvProg.text =
            "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."  
                    "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."  
                    "Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur."  
                    "Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."

        binding.expandTvProg.setOnClickListener {
            binding.expandTvProg.toggle()
            if (binding.expandTvVeryLong.isExpanded && binding.expandTvVeryLong.expandType == EXPAND_TYPE_LAYOUT)
                binding.expandTvVeryLong.toggle()
        }

• Setting maximum number of collapsed lines via xml.
• Setting the ellipsized text via xml.
• Setting the collapsed text via xml.
• Setting if the text starts expanded or collapsed.
• Setting if the expandable type is layout or popup

//TODO Take a look at the library documentation with description of public functions and properties:

If you wish to send a pull request, please make sure to checkout from main branch and merge with main branch as well.

This project is licensed under the MIT License - see the LICENSE file for details.

This library was based on: viewmore-textview.