import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;

import android.content.Intent;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;

public class SplashActivity extends AppCompatActivity {


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash);
    getSupportActionBar().hide();


    Thread myThread = new Thread() {
        @Override
        public void run() {
            try {
                sleep(3000);
                Intent intent = new Intent(getApplicationContext(), OnBoardActivity.class);
                startActivity(intent);
                finish();

            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    };
    myThread.start();
}
}

import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Bundle;


import com.hololo.tutorial.library.Step;
import com.hololo.tutorial.library.TutorialActivity;



public class OnBoardActivity  extends TutorialActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

//slide1
    addFragment(new Step.Builder().setTitle("WELCOME.NAMASTE!!")
            .setSummary("It seems like you are a New User!!nWe welcome you
to GFeed.")
            .setBackgroundColor(Color.parseColor("#FFA600")) // int
background color
            .setDrawable(R.drawable.gh) // int top drawable

            .build());
    //slide2
    addFragment(new Step.Builder().setTitle("CAREER ORIENTED")
            .setSummary("This app includes some awesome career oriented
    elements such as Internship,different courses related to CS/IT,career
   tips by experts.")
            .setBackgroundColor(Color.parseColor("#FFA600")) // int
   background color
            .setDrawable(R.drawable.human) // int top drawable

            .build());
    //slide3
    addFragment(new Step.Builder().setTitle("COLLEGE ORIENTED")
            .setSummary("This app includes some awesome college oriented
    elements such as college club news,aktu feed,H.O.D'corner and Gsim")
            .setBackgroundColor(Color.parseColor("#FFA600")) // int
    background color
            .setDrawable(R.drawable.college) // int top drawable

            .build());
   }

@Override
public void finishTutorial() {



    // Launch the main Activity, called MainActivity
    Intent main = new Intent(this, MainActivity.class);
    startActivity(main);

    // Close the OnboardingActivity
    finish();


  // Check if onboarding_complete is false

   }
 }

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

<application
    android:allowBackup="true"
    android:icon="@drawable/vtry"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".SplashActivity"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme.NoActionBar">
        <intent-filter>
            <action android:name="MAINACTIVITY" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity android:name=".developer"
        android:screenOrientation="portrait">
    </activity>
    <activity android:name=".notify"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="NOTIFY" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity android:name=".download"
        android:screenOrientation="portrait">
    </activity>
    <activity android:name=".webvr"
        android:screenOrientation="portrait">
        />
        <intent-filter>
            <action android:name="WEBVR" />

            <category android:name="android.intent.category.DEFAULT" />
        </intent-filter>
    </activity>
    <activity android:name=".gsim"
        android:screenOrientation="portrait">
        />
    </activity>
    <activity android:name=".Internship"
        android:screenOrientation="portrait">
       />
    </activity>
    <activity android:name=".Courses"
        android:screenOrientation="portrait">
       />
    </activity>
    <activity android:name=".Aktu"
        android:screenOrientation="portrait">
        />
    </activity>
    <activity android:name=".Interview"
        android:screenOrientation="portrait">
    </activity>
    <activity android:name=".Reachus"
        android:screenOrientation="portrait">
    </activity>
    <activity android:name=".OnBoardActivity"
        android:screenOrientation="portrait">

    </activity>
    <service
        android:name=".FirebaseMessagingService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT"/>


        </intent-filter>
    </service>
    <!-- Set custom default icon. This is used when no icon is set for incoming notification messages.

    <meta-data
        android:name="com.google.firebase.messaging.default_notification_icon"
        android:resource="@drawable/vtry" />
    <!-- Set color used with incoming notification messages. This is used when no color is set for the incoming

    <meta-data
        android:name="com.google.firebase.messaging.default_notification_color"
        android:resource="@color/colorAccent" />

</application>