I want to show viewpager next and before page preview in screen. Before and next page show deep in screen and slide next page with deep animation.
You can look this image
How can i do it?
Finally, i did it :) I modify this answer Android - Carousel like widget which displays a portion of the left and right elements
You can look this code.
//pager settings
pager.setClipToPadding(false);
pager.setPageMargin(24);
pager.setPadding(48, 8, 48, 8);
pager.setOffscreenPageLimit(3);
pager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
Log.i("", "onPageScrolled: " + position);
CampaignPagerFragment sampleFragment = (CampaignPagerFragment) ((CampaignPagerAdapter) pager.getAdapter()).getRegisteredFragment(position);
float scale = 1 - (positionOffset * RATIO_SCALE);
// Just a shortcut to findViewById(R.id.image).setScale(scale);
sampleFragment.scaleImage(scale);
if (position + 1 < pager.getAdapter().getCount()) {
sampleFragment = (CampaignPagerFragment) ((CampaignPagerAdapter) pager.getAdapter()).getRegisteredFragment(position + 1);
scale = positionOffset * RATIO_SCALE + (1 - RATIO_SCALE);
sampleFragment.scaleImage(scale);
}
}
@Override
public void onPageSelected(int position) {
Log.i("", "onPageSelected: " + position);
}
@Override
public void onPageScrollStateChanged(int state) {
Log.i("", "onPageScrollStateChanged: " + state);
if (state == ViewPager.SCROLL_STATE_IDLE) {
CampaignPagerFragment fragment = (CampaignPagerFragment) ((CampaignPagerAdapter) pager.getAdapter()).getRegisteredFragment(pager.getCurrentItem());
fragment.scaleImage(1);
if (pager.getCurrentItem() > 0) {
fragment = (CampaignPagerFragment) ((CampaignPagerAdapter) pager.getAdapter()).getRegisteredFragment(pager.getCurrentItem() - 1);
fragment.scaleImage(1 - RATIO_SCALE);
}
if (pager.getCurrentItem() + 1 < pager.getAdapter().getCount()) {
fragment = (CampaignPagerFragment) ((CampaignPagerAdapter) pager.getAdapter()).getRegisteredFragment(pager.getCurrentItem() + 1);
fragment.scaleImage(1 - RATIO_SCALE);
}
}
}
});
//PagerAdapter
public class CampaignPagerAdapter extends FragmentStatePagerAdapter {
SparseArray<Fragment> registeredFragments = new SparseArray<Fragment>();
public CampaignPagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public int getCount() {
return 5;
}
@Override
public Fragment getItem(int position) {
return new CampaignPagerFragment();
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment fragment = (Fragment) super.instantiateItem(container, position);
registeredFragments.put(position, fragment);
return fragment;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
registeredFragments.remove(position);
super.destroyItem(container, position, object);
}
public Fragment getRegisteredFragment(int position) {
return registeredFragments.get(position);
}
}
for ex: https://github.com/mrleolink/SimpleInfiniteCarousel..
Hello, One thing that is missing sampleFragment.scaleImage(scale); It is a method created in CampaignPagerFragment and it scale the fragment rootView..
e.g public void scaleImage(float scaleX)
{
rootView.setScaleY(scaleX);
rootView.invalidate();
}