Android reactions 
An open source and fully customizable implementation of the Facebook reactions pattern.
Alternatives:
Installation 
repositories {
mavenCentral()
}
dependencies {
// Check the 🔝 maven central badge 🔝 for latest $version
implementation "com.github.pgreze:android-reactions:$version"
}Usage 
- Popup creation:
Kotlin DSL:
val config = reactionConfig(context) {
reactions {
resId { R.drawable.ic_fb_like }
resId { R.drawable.ic_fb_love }
resId { R.drawable.ic_fb_laugh }
reaction { R.drawable.ic_fb_wow scale ImageView.ScaleType.FIT_XY }
reaction { R.drawable.ic_fb_sad scale ImageView.ScaleType.FIT_XY }
reaction { R.drawable.ic_fb_angry scale ImageView.ScaleType.FIT_XY }
}
}
val popup = ReactionPopup(context, config) { position -> true.also {
// position = -1 if no selection
} }Java:
ReactionsConfig config = new ReactionsConfigBuilder(context)
.withReactions(new int[]{
R.drawable.ic_fb_like,
R.drawable.ic_fb_love,
R.drawable.ic_fb_laugh,
R.drawable.ic_fb_wow,
R.drawable.ic_fb_sad,
R.drawable.ic_fb_angry
})
.build()
ReactionPopup popup = new ReactionPopup(context, config, (position) -> {
return true; // true is closing popup, false is requesting a new selection
});- Bind popup with a button/view:
View reactionButton = findViewById(R.id.reaction_button);
reactionButton.setOnTouchListener(popup);Notice: if button is inside a scroll view, you need to temporarily disable it:
reactionButton.setOnTouchListener { v, event ->
// Avoid scroll view to consume events
scrollView.requestDisallowInterceptTouchEvent(true)
// Resolve reactions selection
popup.onTouch(v, event)
}- Additional config:
Kotlin:
val popup = reactionPopup(this, ::onReactionSelected) {
// Reaction DSL
reactions(scaleType = ImageView.ScaleType.FIT_XY) {
resId { R.drawable.img1 }
drawable { Drawable(...) }
reaction { R.drawable.img3 scale ImageView.ScaleType.FIT_CENTER }
reaction { Drawable(...) scale ImageView.ScaleType.FIT_CENTER }
}
// Alternative with drawable resource id array
reactionsIds = intArrayOf(R.drawable.img1, R.drawable.img2, R.drawable.img3)
// Optional popup style
popupGravity = PopupGravity.DEFAULT
popupMargin = resources.getDimensionPixelSize(R.dimen.horizontal_margin)
popupCornerRadius = TypedValue.applyDimension(COMPLEX_UNIT_DIP, cornerSizeInDp.toFloat(), resources.displayMetrics)
popupColor = Color.WHITE
popupAlphaValue = 230
// Optional item style
reactionSize = resources.getDimensionPixelSize(R.dimen.item_size)
horizontalMargin = resources.getDimensionPixelSize(R.dimen.item_margin)
verticalMargin = resources.getDimensionPixelSize(R.dimen.item_margin)
// Text provider
reactionTextProvider = { position -> "Item $position" }
reactionTexts = R.array.descriptions
// Text styles
textBackground = ColorDrawable(Color.TRANSPARENT)
textColor = Color.BLACK
textHorizontalPadding = resources.getDimension(R.dimen.text_padding)
textVerticalPadding = resources.getDimension(R.dimen.text_padding)
}Java:
// With resources
.withReactions(new int[]{ R.drawable.ic_fb_like, R.drawable.ic_fb_love })
// With drawables
.withReactions(Arrays.asList(drawable1, drawable2))
// item size (default: 24dp)
.withReactionSize(getResources().getDimensionPixelSize(R.dimen.item_size))
// Horizontal margin (default: 8dp)
.withHorizontalReactionMargin(margin)
// Vertical margin (default: 8dp)
.withVerticalReactionMargin(margin / 2)
// Override popup gravity
.withPopupGravity(PopupGravity.PARENT_RIGHT)
// Margin between items (default: R.dimen.reactions_item_margin)
.withPopupMargin(margin)
// Popup corners radius (default: 90)
.withCornerRadius(getResources().getDimensionPixelSize(R.dimen.corner_radius))
// Change popup color (default: white)
.withPopupColor(Color.LTGRAY)
// Popup background alpha value between 0 (full transparent) and 255 (full opaque) (default: 230)
.withPopupAlphaValue(255)
// Item text provider / string array (default: no texts)
.withReactionTexts(position -> descriptions[position])
.withReactionTexts(R.array.descriptions)
// Text popup background (default: #44000000 circle)
.withTextBackground(new ColorDrawable(Color.TRANSPARENT))
// Text color (default: white)
.withTextColor(Color.BLACK)
// Text horizontal margin (default: 12dp)
.withTextHorizontalPadding(0)
// Text vertical margin (default: 4dp)
.withTextVerticalPadding(0)
// Text size (default: 8sp)
.withTextSize(getResources().getDimension(R.dimen.text_size))