Wizard Overlap

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package com.material.components.activity.card;

import android.content.Context;
import android.graphics.PorterDuff;
import android.os.Bundle;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;
import androidx.appcompat.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.material.components.R;
import com.material.components.utils.Tools;

public class CardWizardOverlap extends AppCompatActivity {

    private static final int MAX_STEP = 4;

    private ViewPager viewPager;
    private Button btnNext;
    private MyViewPagerAdapter myViewPagerAdapter;
    private String about_title_array[] = {
            "Ready to Travel",
            "Pick the Ticket",
            "Flight to Destination",
            "Enjoy Holiday"
    };
    private String about_description_array[] = {
            "Choose your destination, plan Your trip. Pick the best place for Your holiday",
            "Select the day, pick Your ticket. We give you the best prices. We guarantee!",
            "Safe and Comfort flight is our priority. Professional crew and services.",
            "Enjoy your holiday, Don't forget to feel the moment and take a photo!",
    };
    private int about_images_array[] = {
            R.drawable.img_wizard_1,
            R.drawable.img_wizard_2,
            R.drawable.img_wizard_3,
            R.drawable.img_wizard_4
    };

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

        viewPager = (ViewPager) findViewById(R.id.view_pager);
        btnNext = (Button) findViewById(R.id.btn_next);

        // adding bottom dots
        bottomProgressDots(0);

        myViewPagerAdapter = new MyViewPagerAdapter();
        viewPager.setAdapter(myViewPagerAdapter);
        viewPager.addOnPageChangeListener(viewPagerPageChangeListener);

        viewPager.setClipToPadding(false);
        viewPager.setPadding(0, 0, 0, 0);
        viewPager.setPageMargin(getResources().getDimensionPixelOffset(R.dimen.viewpager_margin_overlap));
        viewPager.setOffscreenPageLimit(4);
        viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
            }

            @Override
            public void onPageSelected(int position) {
                if (viewPager.getCurrentItem() == about_title_array.length - 1) {
                    btnNext.setText("Get Started");
                } else {
                    btnNext.setText("Next");
                }
            }

            @Override
            public void onPageScrollStateChanged(int state) {
            }
        });


        btnNext.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                int current = viewPager.getCurrentItem() + 1;
                if (current < MAX_STEP) {
                    // move to next screen
                    viewPager.setCurrentItem(current);
                } else {
                    finish();
                }
            }
        });

        Tools.setSystemBarColor(this, R.color.grey_10);
        Tools.setSystemBarLight(this);
    }


    private void bottomProgressDots(int current_index) {
        LinearLayout dotsLayout = (LinearLayout) findViewById(R.id.layoutDots);
        ImageView[] dots = new ImageView[MAX_STEP];

        dotsLayout.removeAllViews();
        for (int i = 0; i < dots.length; i++) {
            dots[i] = new ImageView(this);
            int width_height = 15;
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(width_height, width_height));
            params.setMargins(10, 10, 10, 10);
            dots[i].setLayoutParams(params);
            dots[i].setImageResource(R.drawable.shape_circle);
            dots[i].setColorFilter(getResources().getColor(R.color.grey_20), PorterDuff.Mode.SRC_IN);
            dotsLayout.addView(dots[i]);
        }

        if (dots.length > 0) {
            dots[current_index].setImageResource(R.drawable.shape_circle);
            dots[current_index].setColorFilter(getResources().getColor(R.color.light_green_600), PorterDuff.Mode.SRC_IN);
        }
    }

    //  viewpager change listener
    ViewPager.OnPageChangeListener viewPagerPageChangeListener = new ViewPager.OnPageChangeListener() {

        @Override
        public void onPageSelected(final int position) {
            bottomProgressDots(position);
        }

        @Override
        public void onPageScrolled(int arg0, float arg1, int arg2) {

        }

        @Override
        public void onPageScrollStateChanged(int arg0) {

        }
    };

    /**
     * View pager adapter
     */
    public class MyViewPagerAdapter extends PagerAdapter {
        private LayoutInflater layoutInflater;

        public MyViewPagerAdapter() {
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            View view = layoutInflater.inflate(R.layout.item_card_wizard, container, false);
            ((TextView) view.findViewById(R.id.title)).setText(about_title_array[position]);
            ((TextView) view.findViewById(R.id.description)).setText(about_description_array[position]);
            ((ImageView) view.findViewById(R.id.image)).setImageResource(about_images_array[position]);

            container.addView(view);
            return view;
        }

        @Override
        public int getCount() {
            return about_title_array.length;
        }

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


        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            View view = (View) object;
            container.removeView(view);
        }
    }
}											
											
										
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