Likes Layout

LikesLayout is an implementation of layout that can draw likes similar to Periscope app.

Setup and usage

To include this library to your project add dependency in build.gradle file:

dependencies {
    compile 'com.github.iojjj:likeslayout:1.0.0'
}

There are three implementations of LikesLayout interface: LikesFrameLayout, LikesLinearLayout, LikesRelativeLayout. You can add them to your view via XML or in Java code.

<com.github.iojjj.likeslayout.LikesLinearLayout
        android:layout_width="match_parent"
        android:layout_height="250dp"
        app:likes_drawable="drawable resource id"
        app:likes_drawableWidth="custom drawable width"
        app:likes_drawableHeight="custom drawable height"
        app:likes_produceInterval="produce interval in milliseconds"
        app:likes_animationDuration="animationduration in milliseconds"
        app:likes_tintMode="off|on_successively|on_random"
        app:likes_tintColors="array resource id"
        app:likes_drawableAnimator="cannonical class name"
        app:likes_drawablePositionAnimator="cannonical class name"
        >
        
        <ImageButton
            ...
            app:likes_drawable="drawable resource id"
            app:likes_drawableWidth="custom drawable width"
            app:likes_drawableHeight="custom drawable height"
            app:likes_mode="enabled|disabled"
            app:likes_produceInterval="produce interval in milliseconds"
            app:likes_animationDuration="animationduration in milliseconds"
            app:likes_tintMode="off|on_successively|on_random"
            app:likes_tintColors="array resource id"
            app:likes_drawableAnimator="cannonical class name"
            app:likes_drawablePositionAnimator="cannonical class name"
            />
            
</com.github.iojjj.likeslayout.LikesLinearLayout>   

or

// create new LikesLayout
LikesLinearLayout likesLinearLayout = new LikesLinearLayout(getContext());
likesLinearLayout.setId(R.id.likes_layout);
// set layout height
final RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
        (int) (getResources().getDisplayMetrics().density * 250));
likesLinearLayout.setLayoutParams(params);
likesLinearLayout.setOrientation(LinearLayout.HORIZONTAL);
// make sure your buttons located at the bottom of LikesLayout
likesLinearLayout.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL);
likesLinearLayout.setPadding(0, 0, 0, (int) (getResources().getDisplayMetrics().density * 16));
// get attributes object that will store default values
likesLinearLayout.getAttributes().setAnimationDuration(1200);
likesLinearLayout.getAttributes().setTintMode(LikesAttributes.TINT_MODE_ON_SUCCESSIVELY);
likesLinearLayout.getAttributes().setTintColors(colors);

// it's time to add a button
ImageButton button = new ImageButton(getContext(), null, R.style.LikeButton_Grade);
button.setId(R.id.btn_grade);
button.setImageResource(R.drawable.ic_grade);
DrawableCompat.setTint(button.getDrawable(), ContextCompat.getColor(getContext(), R.color.colorAccent));
// you can create layout params for your button using LikesLayout.newLayoutParamsBuilder() method
// then using a builder you can set all necessary attributes values
final ViewGroup.LayoutParams params = likesLinearLayout
        .newLayoutParamsBuilder(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)
        .setDrawable(ContextCompat.getDrawable(getContext(), R.drawable.ic_grade_normal))
        .setAnimationDuration(3000)
        .setProduceInterval(500)
        .setPositionAnimatorFactory(new CustomPositionAnimatorFactory2())
        // don't forget to enable likes mode :)
        .setLikesMode(LikesAttributes.LIKES_MODE_ENABLED)
        .build();
// set parameters and add button to LikesLayout
button.setLayoutParams(params);
likesLinearLayout.addView(button);

There is the list of available attributes:

Attribute name	ATLL	CBOBC	Description	Default value
likes_animationDuration	yes	yes	Animation duration in milliseconds.	1200
likes_drawable	yes	yes	Drawable that will be drawn when user presses view.	null
likes_drawableAnimator	yes	yes	Drawable animator factory.	@string/likes_drawable_animator_factory
likes_drawableHeight	yes	yes	Custom drawable height.	0
likes_drawablePositionAnimator	yes	yes	Drawable's position animator factory.	@string/likes_position_animator_factory
likes_drawableWidth	yes	yes	Custom drawable width.	0
likes_mode	no	yes	Switch that allows to enable/disable drawing likes on touching child view. If likes_drawable is null, likes_mode will be considered as disabled.	disabled
likes_produceInterval	yes	yes	Rate at which new likes drawables are produced in milliseconds.	300
likes_tintMode	yes	yes	Switch that allows to enable/disable tinting drawables.	not_set
likes_tintColors	yes	yes	Array of colors used for tinting drawables. If array is empty, likes_tintMode will be considered as off.	null

Where:

• ATLL - Available to LikesLayout
• CBOBC - Can be overridden by child?

Produce likes programmatically

For this case you can use LikesLayout.produceLikes(...) methods, for example:

mLikesLayout.produceLikes(mBtnFavorite, 3, TimeUnit.SECONDS);

Make sure that child passed as an argument (mBtnFavorite) was added to this mLikesLayout (via XML or Java code). Otherwise you will get IllegalArgumentException.

Custom Animations

You can provide your own animations. There are two types of animators available: DrawableAnimator and PositionAnimator. First one used for animating drawable itself (size, alpha, etc). Second one used for animating drawable's position. Note that PositionAnimator animates center of drawable. To use your custom animations you need to create DrawableAnimator.Factory or PositionAnimator.Factory implementations. Then you can set them via XML or in Java code.

Restrictions

• If you will not set likes_mode or set it to disabled, this view will not draw any likes.
• All attributes applicable to LikesLayout will be used as default values for child with likes_mode set to enabled.
• Custom drawable width and height will set exact size ignoring aspect ratio.
• Likes floating from bottom to top.

## Changelog

Version	Changes
v.1.0.0	First public release

## Support

You can support this library by creating a pull request with bug fixes and/or new features on develop branch. Any pull requests on master branch will be removed.

## License * * * The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.