ParticlesDrawable

Draws random flying particles in space forming constellations.

Min API level 9.

Contains:

• ParticlesDrawable, which is an Animatable Drawable.
• ParticlesView, which is a View.

Both have the same public methods for customization and may be inflated using the same customization xml attributes.

Add to your project

dependencies {

  compile 'com.github.doctoror.particlesdrawable:library:[version]' 
}

Screenshots

Usage

ParticlesDrawable usage example

private final ParticlesDrawable mDrawable = new ParticlesDrawable();
  @Override protected void onCreate(Bundle savedInstanceState) {

  super.onCreate(savedInstanceState);

  setContentView(R.layout.activity_demo);

  findViewById(R.id.view).setBackground(mDrawable);
 
}
  @Override protected void onStart() {

  super.onStart();

  mDrawable.start();
 
}
  @Override protected void onStop() {

  super.onStop();

  mDrawable.stop();
 
}

Customization

Here is a list of all attributes, set with default values

<com.doctoror.particlesdrawable.ParticlesView
  app:minDotRadius="1dp"
  app:maxDotRadius="3dp"
  app:lineThickness="1dp"
  app:lineDistance="86dp"
  app:numDots="60"
  app:dotColor="@android:color/white"
  app:lineColor="@android:color/white"
  app:frameDelayMillis="10"
  app:stepMultiplier="1"/>

The conventional getters and setters are also available.

Since API 24, you may also customize the Drawable in xml. For example, create drawable-v24/particles_120dots.xml

<?xml version="1.0" encoding="utf-8"?> <!-- Some versions of Android Studio may show false warning, "Element drawable must be declared", but it works fine when compiling and running --> <drawable
  class="com.doctoror.particlesdrawable.ParticlesDrawable"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  app:numDots="120"/>

And inflate, like

mDrawable = (ParticlesDrawable) ContextCompat

.getDrawable(this, R.drawable.particles_120dots);

Configuration Demo

Particle Constellations Live Wallpaper has a great configuration screen which allows you to quickly see through what can you do with the library:

License

Copyright 2017 Yaroslav Mytkalyk  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.