How Can I Programmatically Vibrate My Android Device at a Custom Frequency?

Vibrate Your Android Device with Custom Frequency

To incorporate device vibrations into your Android application, it's necessary to leverage the VibrationEffect class.

Implementing Vibrations in Your Code

import android.os.Vibrator;
...
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Vibrate for 500 milliseconds
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
    v.vibrate(VibrationEffect.createOneShot(500, VibrationEffect.DEFAULT_AMPLITUDE));
} else {
    //deprecated in API 26
    v.vibrate(500);
}

Customizing Vibration Frequency

The VibrationEffect.createOneShot() method accepts two parameters:

• Duration: Specifies the duration of the vibration in milliseconds. The example code causes a 500-millisecond vibration.
• Amplitude: Defines the vibration intensity. By default, it's set to VibrationEffect.DEFAULT_AMPLITUDE, but you can customize it for stronger or weaker vibrations.

Note: Add the following permission to your AndroidManifest.xml file:

<uses-permission android:name="android.permission.VIBRATE"/>

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