Awesome Open Source
Awesome Open Source


r4a abstracts away the annoying Android Vibrator API which suffers from a number of issues:

  • Different versions of android have deprecated or added different functions and you are expected to know which ones to use depending on the device version.
  • You have to make a new object for every single vibration you want to run.
  • Patterns are tedious and not intuitive.


Setup (easy!)

  1. Download and place it anywhere in the source directory of your project.
  2. Add the line <uses-permission android:name="android.permission.VIBRATE" /> inside the manifest tag of your project's AndroidManifest.xml.
  3. Call Rumble.init(applicationContext) and pass it your application's Context. For example, you can place the following code in your activity:

protected void onCreate(Bundle savedInstanceState)  {

Use (fluent!)

One-time device vibration java Rumble.once(500); // Vibrate for 500 milliseconds.



Repeating patterns

    .beat(holdDuration) // Automatically adds to previous beat.
    .playPattern(4);      // Play 4 times in a row.

Save patterns for later

RumblePattern pattern = Rumble.makePattern()
    .beat(30).rest(150).beat(40).rest(40);; // Add to a pattern later.
pattern.playPattern();      // Play it whenever you like.

Lock patterns to prevent mutation

pattern.playPattern(3);     // Works just fine.
pattern.beat(500).rest(250) // Throws IllegalStateException.

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