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BannerAdapter.java
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BannerAdapter.java
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package com.ocnyang.pagetransformerhelp;
import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.util.ArrayList;
import java.util.List;
/*******************************************************************
* * * * * * * * * * * Created by OCN.Yang
* * * * * * * Time:2017/12/6 11:20.
* * * * * * * Email address:ocnyang@gmail.com
* * * * * * * * * * *.Yang Web site:www.ocnyang.com
*******************************************************************/
public class BannerAdapter extends PagerAdapter {
private BannerViewPager bannerViewPager;
private int mItemCount = 1;
public List<BannerItemBean> getData() {
return mData;
}
public void setData(List<BannerItemBean> data) {
mData = data;
if (mData != null && mData.size() != 0) {
mItemCount = mData.size();
}
}
private List<BannerItemBean> mData;
private List<ImageView> mViews;
private ImageView.ScaleType mScaleType;
private ImageView.ScaleType getScaleType() {
return mScaleType == null ? ImageView.ScaleType.CENTER_CROP : mScaleType;
}
public void setScaleType(ImageView.ScaleType scaleType) {
mScaleType = scaleType;
}
public BannerAdapter(BannerViewPager bannerViewPager) {
mViews = new ArrayList<>();
this.bannerViewPager = bannerViewPager;
}
@Override
public int getCount() {
return mData == null ? 0 : Integer.MAX_VALUE;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == object;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(mViews.get(position % mItemCount));
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
if (mViews.size() <= mItemCount) {
for (int i = 0; i < mItemCount; i++) {
ImageView imageView = new ImageView(container.getContext());
imageView.setScaleType(getScaleType());
bannerViewPager.displayImg(container.getContext(), imageView, mData.get(i).getImg_path());
mViews.add(imageView);
}
}
ImageView imageView = mViews.get(position % mItemCount);
container.addView(imageView);
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
bannerViewPager.OnBannerItemClick(view);
}
});
return imageView;
}
}