Added Android code

[wl-app.git] / Android / app / src / main / java / com / moiseum / wolnelektury / view / news / zoom / ZoomPhotosAdapter.java

diff --git a/Android/app/src/main/java/com/moiseum/wolnelektury/view/news/zoom/ZoomPhotosAdapter.java b/Android/app/src/main/java/com/moiseum/wolnelektury/view/news/zoom/ZoomPhotosAdapter.java
new file mode 100644 (file)
index 0000000..839a91e
--- /dev/null
+++ b/Android/app/src/main/java/com/moiseum/wolnelektury/view/news/zoom/ZoomPhotosAdapter.java
@@ -0,0 +1,105 @@
+package com.moiseum.wolnelektury.view.news.zoom;
+
+import android.content.Context;
+import android.graphics.PorterDuff;
+import android.support.annotation.NonNull;
+import android.support.v4.content.ContextCompat;
+import android.support.v4.view.PagerAdapter;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.resource.drawable.GlideDrawable;
+import com.bumptech.glide.request.RequestListener;
+import com.bumptech.glide.request.target.Target;
+import com.moiseum.wolnelektury.R;
+
+import java.lang.ref.WeakReference;
+import java.util.List;
+
+import it.sephiroth.android.library.imagezoom.ImageViewTouch;
+import it.sephiroth.android.library.imagezoom.ImageViewTouchBase;
+
+/**
+ * Created by Piotr Ostrowski on 07.08.2018.
+ */
+public class ZoomPhotosAdapter extends PagerAdapter {
+
+       private List<String> photoUrls;
+       private LayoutInflater inflater;
+       private WeakReference<Context> mContext;
+
+       ZoomPhotosAdapter(List<String> photoUrl, Context context) {
+               inflater = LayoutInflater.from(context);
+               mContext = new WeakReference<>(context);
+               this.photoUrls = photoUrl;
+               for (String photo : photoUrl) {
+                       Glide.with(context).load(photo).dontTransform().preload();
+               }
+       }
+
+       @NonNull
+       @Override
+       public Object instantiateItem(@NonNull ViewGroup collection, int position) {
+               final String photoUrl = photoUrls.get(position);
+               View view = inflater.inflate(R.layout.zoom_item, collection, false);
+
+               final ProgressBar pbLoading = view.findViewById(R.id.pbLoading);
+               final TextView tvLoading = view.findViewById(R.id.tvLoading);
+               final Button btnRetry = view.findViewById(R.id.btnRetry);
+               final ImageViewTouch ivPhoto = view.findViewById(R.id.ivPointPhoto);
+
+               btnRetry.setOnClickListener(v -> {
+                       pbLoading.setVisibility(View.VISIBLE);
+                       tvLoading.setVisibility(View.VISIBLE);
+                       btnRetry.setVisibility(View.GONE);
+                       fetchImageWithGlide(photoUrl, pbLoading, tvLoading, btnRetry, ivPhoto);
+               });
+
+               ivPhoto.setDisplayType(ImageViewTouchBase.DisplayType.FIT_HEIGHT);
+               fetchImageWithGlide(photoUrl, pbLoading, tvLoading, btnRetry, ivPhoto);
+
+               collection.addView(view);
+               return view;
+       }
+
+       @Override
+       public void destroyItem(@NonNull ViewGroup collection, int position, @NonNull Object view) {
+               collection.removeView((View) view);
+       }
+
+       @Override
+       public int getCount() {
+               return photoUrls.size();
+       }
+
+       @Override
+       public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
+               return view == object;
+       }
+
+       private void fetchImageWithGlide(String photoUrl, final ProgressBar pbLoading, final TextView tvLoading, final Button btnRetry, ImageViewTouch ivPhoto) {
+               if (mContext.get() != null) {
+                       Glide.with(mContext.get()).load(photoUrl).dontTransform().listener(new RequestListener<String, GlideDrawable>() {
+                               @Override
+                               public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
+                                       pbLoading.setVisibility(View.GONE);
+                                       tvLoading.setVisibility(View.GONE);
+                                       btnRetry.setVisibility(View.VISIBLE);
+                                       return true;
+                               }
+
+                               @Override
+                               public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {
+                                       pbLoading.setVisibility(View.GONE);
+                                       tvLoading.setVisibility(View.GONE);
+                                       return false;
+                               }
+                       }).into(ivPhoto);
+               }
+       }
+}