ViewPager auto scroll to the first, last or any page

By calling setCurrentItem() method of ViewPager, you can force it to scroll to any specified page. This example show how to scroll to the first and the last page.

package com.example.androidviewpagerapp;

import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v7.app.ActionBarActivity;
import android.text.method.ScrollingMovementMethod;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

 ViewPager viewPager;
 MyPagerAdapter myPagerAdapter;
 TextView textMsg;
 Button btnToFirst, btnToLast;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  textMsg = (TextView)findViewById(R.id.msg);
  textMsg.setMovementMethod(new ScrollingMovementMethod());
  
  viewPager = (ViewPager) findViewById(R.id.myviewpager);
  myPagerAdapter = new MyPagerAdapter();
  viewPager.setAdapter(myPagerAdapter);
  
  viewPager.setOnPageChangeListener(myOnPageChangeListener);
  
  btnToFirst = (Button)findViewById(R.id.tofirst);
  btnToLast = (Button)findViewById(R.id.tolast);
  btnToFirst.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View v) {
    viewPager.setCurrentItem(0);
   }});
  btnToLast.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View v) {
    int indexLast = viewPager.getAdapter().getCount() - 1;;
    viewPager.setCurrentItem(indexLast);
   }});
 }
 
 OnPageChangeListener myOnPageChangeListener = 
   new OnPageChangeListener(){

  @Override
  public void onPageScrollStateChanged(int state) {
   //Called when the scroll state changes.
  }

  @Override
  public void onPageScrolled(int position, 
    float positionOffset, int positionOffsetPixels) {
   //This method will be invoked when the current page is scrolled, 
   //either as part of a programmatically initiated smooth scroll 
   //or a user initiated touch scroll.
  }

  @Override
  public void onPageSelected(int position) {
   //This method will be invoked when a new page becomes selected.
   textMsg.append("onPageSelected:" + position + "\n");
  }};

 private class MyPagerAdapter extends PagerAdapter {

  int NumberOfPages = 5;

  int[] res = { android.R.drawable.ic_dialog_alert,
    android.R.drawable.ic_menu_camera,
    android.R.drawable.ic_menu_compass,
    android.R.drawable.ic_menu_directions,
    android.R.drawable.ic_menu_gallery };
  int[] backgroundcolor = { 0xFF101010, 0xFF202020, 0xFF303030,
    0xFF404040, 0xFF505050 };

  @Override
  public int getCount() {
   return NumberOfPages;
  }

  @Override
  public boolean isViewFromObject(View view, Object object) {
   return view == object;
  }

  @Override
  public Object instantiateItem(ViewGroup container, int position) {
   
   textMsg.append("instantiateItem:" + position + "\n");

   TextView textView = new TextView(MainActivity.this);
   textView.setTextColor(Color.WHITE);
   textView.setTextSize(30);
   textView.setTypeface(Typeface.DEFAULT_BOLD);
   textView.setText(String.valueOf(position));

   ImageView imageView = new ImageView(MainActivity.this);
   imageView.setImageResource(res[position]);
   LayoutParams imageParams = new LayoutParams(
     LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
   imageView.setLayoutParams(imageParams);

   LinearLayout layout = new LinearLayout(MainActivity.this);
   layout.setOrientation(LinearLayout.VERTICAL);
   LayoutParams layoutParams = new LayoutParams(
     LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
   layout.setBackgroundColor(backgroundcolor[position]);
   layout.setLayoutParams(layoutParams);
   layout.addView(textView);
   layout.addView(imageView);

   final int page = position;
   layout.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {
     Toast.makeText(MainActivity.this,
       "Page " + page + " clicked", Toast.LENGTH_LONG)
       .show();
    }
   });

   container.addView(layout);
   return layout;
  }

  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
   container.removeView((LinearLayout) object);
   
   textMsg.append("destroyItem:" + position + "\n");
  }

 }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.androidviewpagerapp.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/msg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="bottom" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/tofirst"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="to First" />
        <Button
            android:id="@+id/tolast"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="to Last" />
    </LinearLayout>
    
    <android.support.v4.view.ViewPager
        android:id="@+id/myviewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

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