EmojiReactionView

An Android library to make Emoji Reactions on imageviews in a manner Instagram does this!.

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Table of contents

• Features
• Example
• Usage
• Further customization
• Public methods
• Contributions
• License

Features

• Design : The library tries to be reasonably close to the original Instagram's design.
• Customization : Users can customize the look to a great extent easily and reliably.
• Support for RecyclerView : It can easily be used with Recycler views.
• Optimum performance : Efforts have been made to keep memory usage as small as possible.
• Unharmed image : The library doesn't change/modify the image, so every modification of image as imageview is possible

Example

Below is the two sample for usage of the library:

Usage

Just add the following dependency in your app's build.gradle

repositories {
    maven {
        url 'https://dl.bintray.com/dev-ritik/EmojiReactionView/'
    }
}

dependencies {
    implementation 'com.ritik:emojireactionlibrary:1.0.2'
}

Add the following code in your xml file

<com.ritik.emojireactionlibrary.EmojiReactionView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/image"
        app:emojis="@array/emoji" />

where emoji is an array resource which is the address to all emojis to be in the panel like:

    <array name="emoji">
        <item>@drawable/em1</item>
        <item>@drawable/em2</item>
        <item>@drawable/em2</item>
    </array>

and for the home emoji, rename that to home, so that its resource id becomes R.drawable.home to override default home emoji originally set.

To get notified of when the emojis are clicked, you can use:

myImage.setOnEmojiClickListener(new ClickInterface() {
    @Override
    public void onEmojiClicked(int emojiIndex, int x, int y) {
        // emojiIndex is the index of the emoji being clicked (0 based)
        // x,y are the coordinates of the clicked position relative to the image 
        // (if x && y == -1 => changed by program(SetClickedEmojiNumber)
    }

    @Override
    public void onEmojiUnclicked(int emojiIndex, int x, int y) {
        // emojiIndex is the index of the emoji being clicked (0 based)
        // x,y are the coordinates of the clicked position relative to the image 
        // (if x && y == -1 => changed by program(SetClickedEmojiNumber)
    }
});

If you are struck somewhere, you can always check its usage in the sample app for Simple and RecyclerView usage.

With this all done and working, you have made to the default design!

Further customization

The library provides these attributes to modify default design to a custom one:

Attribute	Description	Type(Range)	Default Value
emojis	Set the emojis to be displayed in the panel animation	reference
set_emoji	Set the current selected emoji	integer(>-1)(< noe*) (0 based)	-1
home_Center_X	Set the x coordinate of homeEmoji's center	dimensions	30 * density
home_Center_Y	Set the y coordinate of homeEmoji's center	dimensions	Height - 30 * density
home_side	Set the side length of homeEmoji	dimensions	50 * density
panel_center_X	Set the x coordinate of the center of panel animation	dimension or fraction [0%,100%] (w.r.t width)#	width / 2
panel_center_Y	Set the y coordinate of the center of panel animation	dimension or fraction [0%,100%] (w.r.t height)	Height - emojiSide / 2
panel_radius	Set the radius of panel animation	dimension	min(Height,Width) / 2 - 20 * density
panel_emoji_side	Set the side of emojis on the panel	dimension	50 * density
emojis_rising_height	Set the height of the rising emojis(to start disappearing)	fraction [0%,100%] (w.r.t height)#	Height / 2
emojis_rising_speed	Set the speed per frame of the rising emojis	dimension	10 * density
emojis_rising_number	Set the number of emojis rising in rising emojis animation	integer	24

*noe = number of emojis.
# measurement from bottom

Public methods

Method	Description	Data Type
getCentre	Get the center of panel animation	int(Pixels)
getRadius	Get the radius of panel animation	int(Pixels)
get/SetClickedEmojiNumber	Get/Set the current selected emoji	int (-1 for none)(0 based)
getNumberOfEmojis	Get the number Of emojis in the panel	int
getEmojisRisingSpeed	Get the speed per frame of the rising emojis	int(Pixels)
getHomeRect	Get the Rect of the home emoji	Rect
getPanelEmojiSide	Get the side of emojis on the panel	int(Pixels)
get/SetHomeBitmap	Get/Set the bitmap of the home emoji	Bitmap
isHomeEmojiVisible	Is home emoji visible	boolean
isPanelAnimWorking	Is panel visible	boolean
isClickingAnimWorking	Is the clicking animation working	boolean
isEmojiRising	Is emoji rising animation visible	boolean
setHomeEmojiVisible	Switch to home bitmap visible mode	boolean
setPanelAnimWorking	Start the panel animation	boolean

Contributions

All contributions are welcome and appreciated. Please make a Pull Request or open an issue, if necessary. This may also include any form of feature enhancement. Every constructive criticism is welcome. See Contributing.md

License

This library is licensed under MIT license. View license.