How to vibrate Android device on button click using vibrator effects using Kotlin?

How to vibrate an Android device coding with Kotlin when pressing any buttons? I have used this code below, but there aren't any effects or vibrations performed.

//click listener
imgNextBtn.setOnClickListener {
val vibe:Vibrator = activity?.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
vibe.vibrate(500)
Utilities.alertDialog(this,
activity!!,
mContent!!
}
}


Or

//click listener
imgNextBtn.setOnClickListener {
val vibe:Vibrator = activity?.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
var effect:VibrationEffect = VibrationEffect.createOneShot(1000, VibrationEffect.DEFAULT_AMPLITUDE);

vibe.vibrate(effect)

Utilities.alertDialog(this,
activity!!,
mContent!!
}
}

Android Manifest:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.china.openkey">

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

Vibration using kotlin working sample try this

Manifest.xml


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

In kotlin:

val vibratorService = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
vibratorService.vibrate(500)

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

<Button
android:id="@+id/btn_vibrate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Vibrate"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>


MainActivity.kt

class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main);
val btn_click_me = findViewById(R.id.btn_vibrate) as Button
btn_click_me.setOnClickListener {
val vibratorService = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
vibratorService.vibrate(500)

}
}
}

You can create a `fun` and use from it (`Kotlin`):

fun Fragment.vibratePhone() {
val vibrator = context?.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
if (Build.VERSION.SDK_INT >= 26) {
vibrator.vibrate(VibrationEffect.createOneShot(200, VibrationEffect.DEFAULT_AMPLITUDE))
} else {
vibrator.vibrate(200)
}
}

And in your `fragment`:

vibratePhone()

Finally in you `manifest`:

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

Answer given by @R2R is perfect. But `vibrate()` method of `Vibrator` class is **deprecated** from **API Level 26**. So, I am giving you the updated code:

You don't have to change everything. Just update the code for **vibration** in **MainActivity.kt**.

**MainActivity.kt:**

class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main);

val btn_click_me = findViewById(R.id.btn_vibrate) as Button
btn_click_me.setOnClickListener {
val vibrator = getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
if (vibrator.hasVibrator()) { // Vibrator availability checking
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
vibrator.vibrate(VibrationEffect.createOneShot(500, VibrationEffect.DEFAULT_AMPLITUDE)) // New vibrate method for API Level 26 or higher
} else {
vibrator.vibrate(500) // Vibrate method for below API Level 26
}
}
}
}

}

Simplify it could be like

val buzzer = activity?.getSystemService<Vibrator>()

buzzer?.let {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
buzzer.vibrate(VibrationEffect.createWaveform(pattern, -1))
} else {
//deprecated in API 26
buzzer.vibrate(pattern, -1)
}
}

When pattern could be like

val pattern = longArrayOf(0, 200, 100, 300)

Elements of buzzing and non-buzzing takes -> wait 0 ms, buzz 200ms, wait 100ms, buzz 300ms

Of course with permission in Manifest

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

Hope, it will help somebody in future

Vibrator Service is deprecated for API 31 and above.
To do this the right way, do the following instead as addressed in [this question][1]:

fun vibrate(){
val vib = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
val vibratorManager =
getSystemService(Context.VIBRATOR_MANAGER_SERVICE) as VibratorManager
vibratorManager.defaultVibrator
} else {
@Suppress("DEPRECATION")
getSystemService(VIBRATOR_SERVICE) as Vibrator
}

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
vib.vibrate(VibrationEffect.createOneShot(300, VibrationEffect.DEFAULT_AMPLITUDE) )
}else{
@Suppress("DEPRECATION")
vib.vibrate(300)
}
}


[1]:

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