<FrameLayout 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" >

    <com.lgl.viewpager.ColorAnimationView

        android:id="@+id/ColorAnimationView"

        android:layout_width="match_parent"

        android:layout_height="match_parent" />

    <android.support.v4.view.ViewPager

        android:id="@+id/viewPager"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:padding="30dp" />

    <RelativeLayout

        android:layout_width="match_parent"

        android:layout_height="match_parent" >

        <Button

            android:id="@+id/btn_go"

            android:layout_width="100dp"

            android:layout_height="wrap_content"

            android:layout_alignParentBottom="true"

            android:layout_centerHorizontal="true"

            android:layout_marginBottom="43dp"

            android:background="@drawable/colorbu"

            android:text="开始"

            android:visibility="gone" />

    </RelativeLayout>

</FrameLayout>

import android.annotation.SuppressLint;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentActivity;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentStatePagerAdapter;

import android.support.v4.view.ViewPager;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.ImageView;

public class MainActivity extends FragmentActivity {

    private static final int[] resource = new int[] { R.drawable.welcome1,

            R.drawable.welcome4, R.drawable.welcome3, R.drawable.welcome4 };

    private static final String TAG = MainActivity.class.getSimpleName();

    private Button btn_go;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        btn_go = (Button) findViewById(R.id.btn_go);

        MyFragmentStatePager adpter = new MyFragmentStatePager(

                getSupportFragmentManager());

        ColorAnimationView colorAnimationView = (ColorAnimationView) findViewById(R.id.ColorAnimationView);

        ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);

        //设置adapter

        viewPager.setAdapter(adpter);

        //监听滑动

        colorAnimationView.setmViewPager(viewPager, resource.length);

        colorAnimationView

                .setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

                    @Override

                    public void onPageScrolled(int position,

                            float positionOffset, int positionOffsetPixels) {

                        Log.e("TAG", "onPageScrolled");

                    }

                    @Override

                    public void onPageSelected(int position) {

                        //Button显示或隐藏

                        if (position == 3) {

                            btn_go.setVisibility(View.VISIBLE);

                        } else {

                            btn_go.setVisibility(View.GONE);

                        }

                        Log.e("TAG", "onPageSelected");

                    }

                    @Override

                    public void onPageScrollStateChanged(int state) {

                        Log.e("TAG", "onPageScrollStateChanged");

                    }

                });

    }

    public class MyFragmentStatePager extends FragmentStatePagerAdapter {

        public MyFragmentStatePager(FragmentManager fm) {

            super(fm);

        }

        @Override

        public Fragment getItem(int position) {

            return new MyFragment(position);

        }

        @Override

        public int getCount() {

            return resource.length;

        }

    }

    @SuppressLint("ValidFragment")

    public class MyFragment extends Fragment {

        private int position;

        public MyFragment(int position) {

            this.position = position;

        }

        @Override

        public View onCreateView(LayoutInflater inflater, ViewGroup container,

                Bundle savedInstanceState) {

            ImageView imageView = new ImageView(getActivity());

            imageView.setImageResource(resource[position]);

            return imageView;

        }

    }

}