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How to make an Android device vibrate?

Posted by: admin November 2, 2017 Leave a comment

Questions:

I wrote an Android application. Now, I want to make the device vibrate when a certain action occurs. How can I do this?

Answers:

Try:

 import android.os.Vibrator;
 ...
 Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
 // Vibrate for 500 milliseconds
 v.vibrate(500);

Note:

Don’t forget to include permission in AndroidManifest.xml file:

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

Questions:
Answers:

Grant Vibration Permission

Before you start implementing any vibration code, you have to give your application the permission to vibrate:

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

Make sure to include this line in your AndroidManifest.xml file.

Import the Vibration Library

Most IDEs will do this for you, but here is the import statement if yours doesn’t:

 import android.os.Vibrator;

Make sure this in the activity where you want the vibration to occur.

How to Vibrate for a Given Time

In most circumstances, you’ll be wanting to vibrate the device for a short, predetermined amount of time. You can achieve this by using the vibrate(long milliseconds) method. Here is a quick example:

// Get instance of Vibrator from current Context
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

// Vibrate for 400 milliseconds
v.vibrate(400);

That’s it, simple!

How to Vibrate Indefinitely

It may be the case that you want the device to continue vibrating indefinitely. For this, we use the vibrate(long[] pattern, int repeat) method:

// Get instance of Vibrator from current Context
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

// Start without a delay
// Vibrate for 100 milliseconds
// Sleep for 1000 milliseconds
long[] pattern = {0, 100, 1000};

// The '0' here means to repeat indefinitely
// '0' is actually the index at which the pattern keeps repeating from (the start)
// To repeat the pattern from any other point, you could increase the index, e.g. '1'
v.vibrate(pattern, 0);

When you’re ready to stop the vibration, just call the cancel() method:

v.cancel();

How to use Vibration Patterns

If you want a more bespoke vibration, you can attempt to create your own vibration patterns:

// Get instance of Vibrator from current Context
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

// Start without a delay
// Each element then alternates between vibrate, sleep, vibrate, sleep...
long[] pattern = {0, 100, 1000, 300, 200, 100, 500, 200, 100};

// The '-1' here means to vibrate once, as '-1' is out of bounds in the pattern array
v.vibrate(pattern, -1);

More Complex Vibrations

There are multiple SDKs that offer a more comprehensive range of haptic feedback. One that I use for special effects is Immersion’s Haptic Development Platform for Android.

Troubleshooting

If your device won’t vibrate, first make sure that it can vibrate:

// Get instance of Vibrator from current Context
Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

// Output yes if can vibrate, no otherwise
if (v.hasVibrator()) {
    Log.v("Can Vibrate", "YES");
} else {
    Log.v("Can Vibrate", "NO");
}

Secondly, please ensure that you’ve given your application the permission to vibrate! Refer back to the first point.

Questions:
Answers:

I struggled understanding how to do this on my first implementation – make sure you have the following:

1) Your device supports vibration (my Samsung tablet did not work so I kept re-checking the code – the original code worked perfectly on my CM Touchpad

2) You have declared above the application level in your AndroidManifest.xml file to give the code permission to run.

3) Have imported both of the following in to your MainActivity.java with the other imports:
import android.content.Context;
import android.os.Vibrator;

4) Call your vibration (discussed extensively in this thread already) – I did it in a separate function and call this in the code at other points – depending on what you want to use to call the vibration you may need an image (Android: long click on a button -> perform actions) or button listener, or a clickable object as defined in XML (Clickable image – android):

 public void vibrate(int duration)
 {
    Vibrator vibs = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
    vibs.vibrate(duration);    
 }

Questions:
Answers:

Above answers are perfect. However I wanted to vibrate my app exactly twice on button click and this small information is missing here, hence posting for future readers like me. 🙂

We have to follow as mentioned above and the only change will be in the vibrate pattern as below,

long[] pattern = {0, 100, 1000, 300};
v.vibrate(pattern, -1); //-1 is important

This will exactly vibrate twice. As we already know 0 is for delay, 100 says vibrate for 100MS for the first time, next comes delay of 1000MS and post that vibrate again for 300MS.

One can go on and on mentioning delay and vibration alternatively (e.g. 0, 100, 1000, 300, 1000, 300 for 3 vibrations and so on..) but remember @Dave’s word use it responsibly. 🙂

Also note here that the repeat parameter is set to -1 which means the vibration will happen exactly as mentioned in the pattern. 🙂

Questions:
Answers:

Update 2017 vibrate(interval) method is deprecated with Android-O(API 8.0)

To support all Android versions use this method.

// Vibrate for 150 milliseconds
private void shakeItBaby() {
    if (Build.VERSION.SDK_INT >= 26) {
        ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(VibrationEffect.createOneShot(150, VibrationEffect.DEFAULT_AMPLITUDE));
    } else {
        ((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(150);
    }
}

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

should be added inside <manifest> tag and outside <application> tag.

Questions:
Answers:

Above answer is very correct but I’m giving an easy step to do it:

 private static final long[] THREE_CYCLES = new long[] { 100, 1000, 1000,  1000, 1000, 1000 };

  public void longVibrate(View v) 
  {
     vibrateMulti(THREE_CYCLES);
  }

And then in your xml file:

<button android:layout_height="wrap_content" 
        android:layout_width ="wrap_content" 
        android:onclick      ="longVibrate" 
        android:text         ="VibrateThrice">
</button>

That’s the easiest way.

Questions:
Answers:

I use the following utils method:

public static final void vibratePhone(Context context, short vibrateMilliSeconds) {
    Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
    vibrator.vibrate(vibrateMilliSeconds);
}

Add the following permission to the AndroidManifest file

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

You can use overloaded methods in case if you wish to use different types of vibrations (patterns / indefinite) as suggested above.