HorizontalPagerDemo.java

package com.github.ysamlan.horizontalpager;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.widget.TextView;

/**
 * Simple example of how to use the {@link RealViewSwitcher} class.
 *
 * @author Marc Reichelt, <a href="http://www.marcreichelt.de/">http://www.marcreichelt.de/</a>
 */
public class HorizontalPagerDemo extends Activity {

    @Override
    public void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Create the view switcher
        HorizontalPager realViewSwitcher = new HorizontalPager(getApplicationContext());

        // Add some views to it
        final int[] backgroundColors =
                { Color.RED, Color.BLUE, Color.CYAN, Color.GREEN, Color.YELLOW };
        for (int i = 0; i < 5; i++) {
            TextView textView = new TextView(getApplicationContext());
            textView.setText(Integer.toString(i + 1));
            textView.setTextSize(100);
            textView.setTextColor(Color.BLACK);
            textView.setGravity(Gravity.CENTER);
            textView.setBackgroundColor(backgroundColors[i]);
            realViewSwitcher.addView(textView);
        }

        // set as content view
        setContentView(realViewSwitcher);

        // Yeah, it really is as simple as this :-)

        /*
         * Note that you can also define your own views directly in a resource XML, too by using:
         * <com.github.ysamlan.horizontalpager.RealViewSwitcher
         *     android:layout_width="fill_parent"
         *     android:layout_height="fill_parent"
         *     android:id="@+id/real_view_switcher">
         *     <!-- your views here -->
         * </com.github.ysamlan.horizontalpager.RealViewSwitcher>
         */

        // OPTIONAL: listen for screen changes
        realViewSwitcher.setOnScreenSwitchListener(onScreenSwitchListener);
    }

    private final HorizontalPager.OnScreenSwitchListener onScreenSwitchListener =
        screen -> {
            /*
             * this method is executed if a screen has been activated, i.e. the screen is
             * completely visible and the animation has stopped (might be useful for
             * removing / adding new views)
             */
            Log.d("HorizontalPager", "switched to screen: " + screen);
        };
}