ScreenShotSlider

package ais.mobilelife.appstore1.views;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.squareup.picasso.Picasso;

import java.util.ArrayList;

import ais.mobilelife.appstore1.R;
import ais.mobilelife.appstore1.utils.UiHelper;

/**
 * Created by apichais on 11/24/14 AD.
 */
public class ScreenShotSlider extends HorizontalScrollView {
    private static final int SWIPE_MIN_DISTANCE = 5;
    private static final int SWIPE_THRESHOLD_VELOCITY = 300;

    private ArrayList mItems = null;
    private GestureDetector mGestureDetector;
    private int mActiveFeature = 0;

    public ScreenShotSlider(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public ScreenShotSlider(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ScreenShotSlider(Context context) {
        super(context);
    }

    public void setScreenshots(ArrayList items) {
        LinearLayout internalWrapper = new LinearLayout(getContext());
        internalWrapper.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        internalWrapper.setOrientation(LinearLayout.HORIZONTAL);
        addView(internalWrapper);
        this.mItems = items;

        for (int i = 0; i < items.size(); i++) {
            ImageView imageView = new ImageView(getContext());
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.MATCH_PARENT);
            imageView.setLayoutParams(params);
            imageView.setAdjustViewBounds(true);
            if(i < items.size() - 1) {
                imageView.setPadding(0, 0, (int) UiHelper.convertDpToPixel(5, getContext()), 0);
            }

            Picasso.with(getContext()).load(mItems.get(i).toString()).into(imageView);
            internalWrapper.addView(imageView);

            imageView.setOnTouchListener(new OnTouchListener() {
                @Override
                public boolean onTouch(View view, MotionEvent motionEvent) {
                    featureWidth = view.getMeasuredWidth();
                    return false;
                }
            });
        }

        setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                //If the user swipes
                if (mGestureDetector.onTouchEvent(event)) {
                    return true;
                } else if (event.getAction() == MotionEvent.ACTION_UP || event.getAction() == MotionEvent.ACTION_CANCEL) {

//                    Log.e("alsklsaklassa", "asdasdadsasdasdasd ");
                    int scrollX = getScrollX();
//                    int featureWidth = v.getMeasuredWidth();
                    mActiveFeature = ((scrollX + (featureWidth / 2)) / featureWidth);
                    int scrollTo = mActiveFeature * featureWidth;
                    smoothScrollTo(scrollTo, 0);
                    return true;
                } else {
                    return false;
                }
            }
        });
        mGestureDetector = new GestureDetector(getContext(), new MyGestureDetector());
    }

    private int featureWidth;

    class MyGestureDetector extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            try {
                //right to left
                if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
//                    int featureWidth = getMeasuredWidth();
                    mActiveFeature = (mActiveFeature < (mItems.size() - 2)) ? mActiveFeature + 1 : mItems.size() - 2;
                    smoothScrollTo(mActiveFeature * featureWidth, 0);
                    return true;
                }
                //left to right
                else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
//                    int featureWidth = getMeasuredWidth();
                    mActiveFeature = (mActiveFeature > 0) ? mActiveFeature - 1 : 0;
                    smoothScrollTo(mActiveFeature * featureWidth, 0);
                    return true;
                }
            } catch (Exception e) {
                Log.e("Fling", "There was an error processing the Fling event:" + e.getMessage());
            }
            return false;
        }
    }
}