Android EasyReveal Library
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EasyReveal is an extensible reveal library that contains various reveal animations. (Demo apk)
- Add the JitPack repository to your root build.gradle at the end of repositories:
allprojects {
repositories {
...
maven { url 'https://jitpack.io' }
}
}
- Add the EasyReveal dependency in the build.gradle:
implementation 'com.github.Chrisvin:EasyReveal:1.2'
To run the demo project, clone the repository and run it via Android Studio.
(OR)
Download the latest demo apk from releases.
The views that need to be revealed/hidden should be put inside the EasyReveal layouts.
<com.jem.easyreveal.layouts.EasyRevealLinearLayout
...
app:clipPathProvider="star" // possible values: circular, linear, random_line, star, sweep & wave
app:revealAnimationDuration="2000"
app:hideAnimationDuration="1500" >
<!-- The views to be revealed/hidden go here -->
</com.jem.easyreveal.layouts.EasyRevealLinearLayout>
<!-- Similarly for com.jem.easyreveal.layouts.EasyRevealConstraintLayout & com.jem.easyreveal.layouts.EasyRevealFrameLayout -->
val revealLayout = EasyRevealLinearLayout(this)
// Set the ClipPathProvider that is used to clip the view for reveal animation
revealLayout.clipPathProvider = StarClipPathProvider(numberOfPoints = 6)
// Set the duration taken for reveal animation
revealLayout.revealAnimationDuration = 1500
// Set the duration taken for hide animation
revealLayout.hideAnimationDuration = 2000
// Set listener to get updates during reveal/hide animation
revealLayout.onUpdateListener = object: RevealLayout.OnUpdateListener {
override fun onUpdate(percent: Float) {
Toast.makeText(this@MainActivity, "Revealed percent: $percent", Toast.LENGTH_SHORT).show()
}
}
// Start reveal animation
revealLayout.reveal()
// Start hide animation
revealLayout.hide()Note : Dokka generated documentation on ClipPathProviders
One of the core focuses of this library was extensibility. Creating your own reveal animation is as simple as extending ClipPathProvider and implementing the getPath() method. getPath() provides the Path for a given percent value on the provided view. The path gotten from getPath() is then used to clip the view using canvas.clipPath(path, op) (The op value is provided by the ClipPathProvider as well).
For example, A simultaneous 4 corner circular reveal animation can be achieved as follows.
class CustomClipPathProvider : ClipPathProvider() {
override fun getPath(percent: Float, view: View): Path {
path.rewind()
val radius = getDistance(0f,0f,view.width.toFloat() / 2, view.height.toFloat() / 2) * (percent/100)
path.addCircle(0f, 0f, radius, Path.Direction.CW)
path.addCircle(view.width.toFloat(), 0f, radius, Path.Direction.CW)
path.addCircle(0f, view.height.toFloat(), radius, Path.Direction.CW)
path.addCircle(view.width.toFloat(), view.height.toFloat(), radius, Path.Direction.CW)
return path
}
private fun getDistance(startX: Float, startY: Float, endX: Float, endY: Float): Float {
return sqrt(((startX - endX) * (startX - endX)) + ((startY - endY) * (startY - endY)))
}
}
Documentation generated using Dokka : chrisvin.github.io/EasyReveal
No, infact, EasyReveal was a library that I created since I needed (but was unable to find) an extensible library for view clipping. Hence, the true form of EasyReveal is infact a view clipping library, who's most obvious usecase is designing customizable reveal animations.
The first version of LiquidSwipe used EasyReveal as a dependency. If you like this library, you will probably love LiquidSwipe and ConcentricOnboarding.
For bugs, questions and discussions please use the Github Issues.
MIT License
Copyright (c) 2019 Jem
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