Java tutorial
/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.ricardotrujillo.prueba.viewmodel.adapter; import android.app.Activity; import android.content.Intent; import android.databinding.DataBindingUtil; import android.graphics.Bitmap; import android.graphics.drawable.BitmapDrawable; import android.os.Build; import android.support.v4.app.ActivityOptionsCompat; import android.support.v4.util.Pair; import android.support.v7.graphics.Palette; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.ImageView; import com.ricardotrujillo.prueba.App; import com.ricardotrujillo.prueba.R; import com.ricardotrujillo.prueba.databinding.StoreRowBinding; import com.ricardotrujillo.prueba.model.EntryViewModel; import com.ricardotrujillo.prueba.model.Store; import com.ricardotrujillo.prueba.model.StoreManager; import com.ricardotrujillo.prueba.view.LoadingFeedItemView; import com.ricardotrujillo.prueba.viewmodel.Constants; import com.ricardotrujillo.prueba.viewmodel.activity.EntryActivity; import com.ricardotrujillo.prueba.viewmodel.interfaces.CustomCallback; import com.ricardotrujillo.prueba.viewmodel.worker.AnimWorker; import com.ricardotrujillo.prueba.viewmodel.worker.BusWorker; import com.ricardotrujillo.prueba.viewmodel.worker.LogWorker; import com.ricardotrujillo.prueba.viewmodel.worker.NetWorker; import com.squareup.picasso.Callback; import com.squareup.picasso.NetworkPolicy; import com.squareup.picasso.Picasso; import java.util.ArrayList; import javax.inject.Inject; /** * Created by Ricardo on 18/03/2016 */ public class StoreRecyclerViewAdapter extends RecyclerView.Adapter<StoreRecyclerViewAdapter.BindingHolder> { public static final int VIEW_TYPE_DEFAULT = 1; public static final int VIEW_TYPE_LOADER = 2; static Activity activity; @Inject LogWorker logWorker; @Inject BusWorker busWorker; @Inject AnimWorker animWorker; @Inject StoreManager storeManager; private boolean showLoadingView = false; private int lastPosition = -1; public StoreRecyclerViewAdapter(Activity act) { activity = act; inject(); } void inject() { ((App) activity.getApplication()).getAppComponent().inject(this); } @Override public BindingHolder onCreateViewHolder(ViewGroup parent, int type) { LayoutInflater inflater = LayoutInflater.from(parent.getContext()); StoreRowBinding binding = StoreRowBinding.inflate(inflater, parent, false); return new BindingHolder(binding.getRoot()); } @Override public void onBindViewHolder(final BindingHolder holder, final int position) { holder.binding.setEntry(storeManager.getStore().feed.entry.get(position)); holder.binding.setClick(new StoreClickHandler() { @Override public void onClick(View view) { onClickButton(view, holder); } }); if (!storeManager.getStore().feed.entry.get(position).imageLoaded) { holder.binding.ivContainer.setAlpha(0f); } if (storeManager.getColorDrawable(storeManager.getStore().feed.entry.get(position).name.label) == null) { loadImage(holder.binding.ivFeedCenter, position, new CustomCallback() { @Override public void onSuccess() { Bitmap myBitmap = ((BitmapDrawable) holder.binding.ivFeedCenter.getDrawable()).getBitmap(); if (myBitmap != null && !myBitmap.isRecycled()) { Palette.from(myBitmap).generate(new Palette.PaletteAsyncListener() { public void onGenerated(Palette palette) { if (!storeManager.getStore().feed.entry.get(position).imageLoaded) { holder.binding.ivContainer.animate().setDuration(500).alpha(1f); storeManager.getStore().feed.entry.get(position).imageLoaded = true; //First insert animation } storeManager.getStore().feed.entry.get(position).paletteColor = animWorker .getDarkColorDrawable(palette).getColor(); holder.binding.ivContainer .setBackgroundDrawable(animWorker.getDarkColorDrawable(palette)); // min supported API is 14 storeManager.addDrawables(position, animWorker.getDarkColorDrawable(palette)); } }); } } @Override public void onError() { } }); } else { loadImage(holder.binding.ivFeedCenter, position, new CustomCallback() { @Override public void onSuccess() { holder.binding.ivContainer.setBackgroundDrawable(storeManager .getColorDrawable(storeManager.getStore().feed.entry.get(position).name.label)); // min supported API is 14 holder.binding.ivContainer.animate().setDuration(500).alpha(1f); } @Override public void onError() { } }); } holder.getBinding().executePendingBindings(); if (getItemViewType(position) == VIEW_TYPE_LOADER) { bindLoadingFeedItem((LoadingCellFeedViewHolder) holder); } setAnimation(holder.binding.cardView, position); } private void setAnimation(View viewToAnimate, int position) { if (position > lastPosition) { Animation animation = AnimationUtils.loadAnimation(activity, R.anim.slide_in_bottom); viewToAnimate.startAnimation(animation); lastPosition = position; } } void loadImage(ImageView view, final int position, final CustomCallback callback) { Picasso.with(view.getContext()).load(storeManager.getStore().feed.entry.get(position).image[2].label) .networkPolicy(NetWorker.isConnected(activity) ? NetworkPolicy.NO_CACHE : NetworkPolicy.OFFLINE) .noFade().into(view, new Callback() { @Override public void onSuccess() { callback.onSuccess(); } @Override public void onError() { } }); } private void bindLoadingFeedItem(final LoadingCellFeedViewHolder holder) { holder.loadingFeedItemView .setOnLoadingFinishedListener(new LoadingFeedItemView.OnLoadingFinishedListener() { @Override public void onLoadingFinished() { showLoadingView = false; notifyItemChanged(0); } }); } @Override public int getItemViewType(int position) { if (showLoadingView && position == 0) { return VIEW_TYPE_LOADER; } else { return VIEW_TYPE_DEFAULT; } } public void onClickButton(View view, BindingHolder holder) { switch (view.getId()) { case R.id.ivFeedCenter: openEntryActivity(holder); break; case R.id.ivContainerParent: openEntryActivity(holder); break; default: break; } } @Override public void onViewDetachedFromWindow(BindingHolder holder) { holder.clearAnimation(); } @Override public int getItemCount() { if (storeManager.getStore() != null) { return storeManager.getStore().feed.entry.size(); } else { return 0; } } void openEntryActivity(BindingHolder holder) { Intent intent = new Intent(activity, EntryActivity.class); intent.putExtra(Constants.POSITION, holder.getLayoutPosition()); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { holder.binding.ivFeedCenter.setTransitionName(activity.getString(R.string.entry_transition_name)); holder.binding.tvName.setTransitionName(activity.getString(R.string.entry_transition_name)); Pair<View, String> p1 = Pair.create((View) holder.binding.vImageRoot, activity.getString(R.string.entry_transition_thumb)); @SuppressWarnings("unchecked") ActivityOptionsCompat options = ActivityOptionsCompat.makeSceneTransitionAnimation(activity, p1); activity.startActivity(intent, options.toBundle()); } else { activity.startActivity(intent); } } public void updateList(ArrayList<Store.Feed.Entry> data) { storeManager.getStore().feed.entry = new ArrayList<>(); storeManager.getStore().feed.entry.addAll(data); notifyDataSetChanged(); } public interface StoreClickHandler { void onClick(View view); } public static class BindingHolder extends RecyclerView.ViewHolder { StoreRowBinding binding; public BindingHolder(View v) { super(v); binding = DataBindingUtil.bind(v); binding.setViewModel(new EntryViewModel(activity)); } public StoreRowBinding getBinding() { return binding; } public void clearAnimation() { binding.getRoot().clearAnimation(); } } public static class LoadingCellFeedViewHolder extends BindingHolder { LoadingFeedItemView loadingFeedItemView; public LoadingCellFeedViewHolder(LoadingFeedItemView view) { super(view); this.loadingFeedItemView = view; } } }