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.
ExpandableTextView is a custom TextView that allows long text to be collapsed or expanded, either inline within the layout or via a popup dialog. 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:
- Collapsible/expandable text with animation.
- Two expansion modes: layout-based and popup.
- Custom "read more" / "read less" labels.
- Ellipsized text with custom color and underline.
- Optional fade animation on expand/collapse.
- Supports usage in XML, programmatically, or with data binding.
| Attribute | Type | Description |
|---|---|---|
collapsedLines | Integer | Number of lines to show when collapsed. Default is 3. |
isExpanded | Boolean | Initial expansion state. Default is false. |
animDuration | Integer | Animation duration in milliseconds. Default is 300. |
readMoreText | String | Text shown to expand the view. Default is "Read more". |
readLessText | String | Text shown to collapse the view. Default is "Read less". |
expandType | Enum | Either layout or popup. Default is layout. |
ellipsizeTextColor | Color | Color of the ellipsis and expand label. Default is Color.BLUE. |
isUnderlined | Boolean | Whether the expand/collapse label should be underlined. Default is false. |
fadeAnimationEnabled | Boolean | Enable or disable fade animation. Default is true. |
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:fadeAnimationEnabled="true" 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" /> binding.expandTvProg .setAnimationDuration(500) .setFadeAnimationEnabled(true) .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() } 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.