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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"

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import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.widget.CheckBox;
import android.widget.ImageView;

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import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class MyFragmentPageAdapter extends FragmentPagerAdapter {

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list.setOnDetectScrollListener(new OnDetectScrollListener() {

			@Override
			public void onUpScrolling() {
				// TODO Auto-generated method stub
				mBottom.setVisibility(View.VISIBLE);
			}

			@Override
			public void onDownScrolling() {

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import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

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import android.app.AlertDialog;
import android.content.Context;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ScrollView;

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import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Shader;

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import android.animation.Animator;
import android.animation.AnimatorInflater;
import android.app.Fragment;

/**
 * Created by francesco on 14/10/14.
 */
public class ObservableFragment extends Fragment {

    private TransitionListener mListener;

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/*
 * Copyright (C) 2014 sebnapi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software

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// Credit goes to http://fiskur.eu/?p=752

public class CrossfadePageTransformer implements ViewPager.PageTransformer {
 
        @Override
        public void transformPage(View page, float position) {
            int pageWidth = page.getWidth();
 
            View backgroundView = page.findViewById(R.id.background);
            View text = page.findViewById(R.id.content);