Android/app/src/main/java/com/moiseum/wolnelektury/view/news/single/NewsGalleryAdapter.java

   1 package com.moiseum.wolnelektury.view.news.single;
   2
   3 import android.annotation.SuppressLint;
   4 import android.content.Context;
   5 import android.support.annotation.NonNull;
   6 import android.support.v4.view.PagerAdapter;
   7 import android.view.LayoutInflater;
   8 import android.view.View;
   9 import android.view.ViewGroup;
  10 import android.widget.ImageView;
  11
  12 import com.bumptech.glide.Glide;
  13 import com.bumptech.glide.load.engine.DiskCacheStrategy;
  14 import com.moiseum.wolnelektury.R;
  15
  16 import java.util.List;
  17
  18 import io.reactivex.Observable;
  19 import io.reactivex.subjects.PublishSubject;
  20
  21 /**
  22  * Created by Piotr Ostrowski on 06.08.2018.
  23  */
  24 public class NewsGalleryAdapter extends PagerAdapter {
  25
  26         private final LayoutInflater inflater;
  27         private final List<String> galleryUrls;
  28
  29         private PublishSubject<Integer> pagerOnClickSubject = PublishSubject.create();
  30         private View.OnClickListener pageClickListener = v -> {
  31                 int position = (int) v.getTag();
  32                 pagerOnClickSubject.onNext(position);
  33         };
  34
  35         NewsGalleryAdapter(List<String> galleryUrls, Context context) {
  36                 this.galleryUrls = galleryUrls;
  37                 this.inflater = LayoutInflater.from(context);
  38         }
  39
  40         @NonNull
  41         @SuppressLint("InflateParams")
  42         @Override
  43         public Object instantiateItem(@NonNull ViewGroup container, int position) {
  44                 View view = inflater.inflate(R.layout.fragment_single_news_gallery_item, null);
  45                 view.setTag(position);
  46                 view.setOnClickListener(pageClickListener);
  47                 container.addView(view);
  48
  49                 ImageView ivGallery = view.findViewById(R.id.tvGalleryImage);
  50                 Glide.with(view.getContext())
  51                                 .load(galleryUrls.get(position))
  52                                 .diskCacheStrategy(DiskCacheStrategy.ALL)
  53                                 .dontTransform()
  54                                 .into(ivGallery);
  55
  56                 return view;
  57         }
  58
  59         @Override
  60         public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
  61                 View view = (View) object;
  62                 container.removeView(view);
  63         }
  64
  65         @Override
  66         public int getCount() {
  67                 return galleryUrls.size();
  68         }
  69
  70         @Override
  71         public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
  72                 return view == object;
  73         }
  74
  75         Observable<Integer> getPageClickObservable() {
  76                 return pagerOnClickSubject.hide();
  77         }
  78 }