Like Button
Like Button is a library that allows you to create a button with animation effects similar to Twitter's heart when you like something.
Table of Contents
- Gradle Dependency
- Basic Usage
- Button State
- Like Event Listener
- Icon Types
- Icon Size
- Custom Icons
- Circle Color Config
- Dots Color Config
- Animation Size
- Inspiration
- Contribution
- License
Gradle Dependency
Repository
Add this in your root build.gradle file ( not your module build.gradle file):
allprojects {
repositories {
...
maven {
url "https://jitpack.io"
}
}
}
Dependency
Add this to your module's build.gradle file:
dependencies {
... compile 'com.github.jd-alexander:LikeButton:0.2.3'
}
}
Basic Usage
Like Button XML
To use this like button in your layout simply copy and paste the xml below. This provides the default heart button.
<com.like.LikeButton
app:icon_type="heart"
app:icon_size="25dp"
android:id="@+id/star_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>Attributes
There are several other attributes that can be used to configure the button's behaviour and appearance. They are shown below and will be explained in the sections that follow long with their java counterparts.
<com.like.LikeButton app:icon_type="Star" app:circle_start_color="@color/colorPrimary" app:like_drawable="@drawable/thumb_on" app:unlike_drawable="@drawable/thumb_off" app:dots_primary_color="@color/colorAccent" app:dots_secondary_color="@color/colorPrimary" app:circle_end_color="@color/colorAccent" app:icon_size="25dp" app:liked="true" app:anim_scale_factor="2" app:is_enabled="false" /> Button State
To set the inital liked state of the button you simply use the setLiked functionality via XML or Java. This will show the button in the liked state with the drawable that you selected.
XML
app:liked="true" Java
likeButton.setLiked(true);
You can also set if the button is to be enabled or disabled. Once disabled, the animation, listener or any other functionality of the button won't be triggered.
XML
app:is_enabled="false" Java
likeButton.setEnabled(false);
Like Event Listener
To listen to events from your like button, simply implement the listener that's triggered once the button is tapped.
likeButton.setOnLikeListener(new OnLikeListener() {
@Override
public void liked(LikeButton likeButton) {
}
@Override
public void unLiked(LikeButton likeButton) {
}
}
);
Icon Types
The libary is bundled with three icons that you can use. A heart,thumb and a star.
XML
To set the respective icon via xml simply use the word in the icon type attribute.
app:icon_type="heart" Java
If you would like to set the icon via Java then simply call the set icon method on the button.
likeButton.setIcon(IconType.Star);
Icon Size
XML
To set the icon size via xml simply use this attribute
app:icon_size="20dp"Java
If you are doing it programmatically you can set it with either the method for pixels or dp.
likeButton.setIconSizePx(40);
likeButton.setIconSizeDp(20);
Note, it's very important that the size of the button is set even if you are planning to use custom drawables as described below as the library uses this value to determine the width and height of the effects that occur when the button is tapped.
Custom Icons
XML
In order to use custom icons instead of the ones bundled with the library you simply set the drawables that represent the liked and unliked state of the button.
app:like_drawable="@drawable/thumb_on" app:unlike_drawable="@drawable/thumb_off" Java
likeButton.setLikeDrawable(heart_on);
likeButton.setUnlikeDrawable(heart_off);
likeButton.setUnlikeDrawableRes(R.drawable.heart_off);
likeButton.setLikeDrawableRes(R.drawable.heart_on);
Circle Color Config
If you watch the animation closely you will notice that there's a circle that begins from the center of the icon and and then it animates away from the center before the exploding dots animate. These colours can be changed to suit the theme of your icon.
XML
app:circle_start_color="@color/colorPrimary" app:circle_end_color="@color/colorAccent" Java
likeButton.setCircleEndColorRes(R.color.colorAccent);
likeButton.setCircleEndColorRes(R.color.colorPrimary);
Dots Color Config
The dots that represent the outer animation can be coloured also.
XML
app:dots_primary_color="@color/colorAccent" app:dots_secondary_color="@color/colorPrimary" Java
likeButton.setExplodingDotColorsRes(R.color.colorPrimary,R.color.colorAccent);
Animation Size
To change the size of the dots that also contributes to the size of the overall like button view you can use the animation scale factor attribute via XML or it's Java equivalent
XML
app:anim_scale_factor="2.5" Java
likeButton.setAnimationScaleFactor(2);
Inspiration
This library was made by possible based on code and design inspiration from these sources:
https://github.com/frogermcs/LikeAnimation
https://github.com/lightsmeki/android_twitter_heart_animation_button
https://dribbble.com/shots/2416983-Twitter-Heart-Animation
Contribution
Please fork repository and contribute using pull requests.
Any contributions, large or small, major features, bug fixes, additional language translations, unit/integration tests are welcomed and appreciated but will be thoroughly reviewed and discussed.
License
Copyright 2016 Joel Dean Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.