Vibrate android device programmaticaly

 Android Example –How to Vibrate android device programmatically?

Step 1:- Add bellow permission in your manifest file.

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

Step 2: Get Vibrate System Service.

Vibrator vibrate = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);

Step 3: Set Vibrate  Time period in milliseconds and Time Pattern. Time Pattern means like start/stope vibration.

vibrate.vibrate(300);//in millisecond.

Pattern

long pattern[] = {60,120,180,240,300,360,420,480};
vibrate.vibrate(pattern,1);

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 activity_main.xml

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xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
   android:orientation="vertical">

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button
        android:id="@+id/btn_start"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:text="Vibrate Start"
        android:layout_margin="20dp"/>
    <Button
        android:id="@+id/btn_stope"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:text="Vibrate Stope"
        android:layout_margin="20dp"/>

</LinearLayout>

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MainActivity.java

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import android.content.Context;
import android.os.Vibrator;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    TextView text;
    Vibrator vibrate;
    Button btn_start,btn_stope;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        text = (TextView) findViewById(R.id.textView1);
        btn_start = (Button) findViewById(R.id.btn_start);
        btn_stope = (Button) findViewById(R.id.btn_stope);

        vibrate = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
        btn_start.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                long pattern[] = {60,120,180,240,300,360,420,480};
                vibrate.vibrate(pattern,1);
                //vibrate.vibrate(300);
                text.setText("Vibrate Start...");

            }
        });
        btn_stope.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                vibrate.cancel();
                text.setText("Vibrate Stope...");


            }
        });
    }

}

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