Java tutorial
/* * Copyright (C) 2015 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.ixvil.android.BoxBonus.Fragments; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import com.ixvil.android.BoxBonus.Activities.GiftDetailActivity; import com.ixvil.android.BoxBonus.Adapters.AbstractFragmentContentAdapter; import com.ixvil.android.BoxBonus.Models.GiftsModel; import com.ixvil.android.BoxBonus.R; import com.google.gson.JsonArray; import com.google.gson.JsonNull; import com.google.gson.JsonObject; import com.koushikdutta.ion.Ion; /** * Provides UI for the view with Tile. */ public class GiftsListFragment extends Fragment implements FetchSuccessFragmentInterface { private GiftAdapter contentAdapter; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { RecyclerView recyclerView = (RecyclerView) inflater.inflate(R.layout.recycler_view, container, false); contentAdapter = new GiftAdapter(recyclerView.getContext()); recyclerView.setAdapter(contentAdapter); recyclerView.setHasFixedSize(true); recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); GiftsModel.getFromNet(inflater.getContext(), this); return recyclerView; } @Override public void onFetchSuccess(JsonArray jsonArray) { GiftsModel.setEntities(jsonArray); contentAdapter.updateAdapter(jsonArray); contentAdapter.notifyDataSetChanged(); } public static class ViewHolder extends RecyclerView.ViewHolder { public ImageView picture; public TextView name; public TextView id; public ViewHolder(LayoutInflater inflater, ViewGroup parent) { super(inflater.inflate(R.layout.item_tile, parent, false)); picture = (ImageView) itemView.findViewById(R.id.tile_picture); name = (TextView) itemView.findViewById(R.id.tile_title); id = (TextView) itemView.findViewById(R.id.tile_id); itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Context context = v.getContext(); Intent intent = new Intent(context, GiftDetailActivity.class); intent.putExtra(GiftDetailActivity.EXTRA_POSITION, id.getText().toString()); context.startActivity(intent); } }); } } class GiftAdapter extends AbstractFragmentContentAdapter<ViewHolder> { GiftAdapter(Context context) { super(context); } @Override public void updateAdapter(JsonArray jsonObject) { mIds = new String[jsonObject.size()]; mGifts = new String[jsonObject.size()]; mGiftsPictures = new String[jsonObject.size()]; for (int i = 0; i < jsonObject.size(); i++) { JsonObject obj = (JsonObject) jsonObject.get(i); JsonObject partnerAttributes = (JsonObject) obj.get("attributes"); mGifts[i] = partnerAttributes.get("name").getAsString(); mIds[i] = obj.get("id").getAsString(); if (partnerAttributes.get("logo") instanceof JsonNull) { mGiftsPictures[i] = null; } else { mGiftsPictures[i] = innerContext.getString(R.string.image_url_prefix) + partnerAttributes.get("logo").getAsString(); } } setLength(jsonObject.size()); } @Override public GiftsListFragment.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { return new GiftsListFragment.ViewHolder(LayoutInflater.from(parent.getContext()), parent); } @Override public void onBindViewHolder(ViewHolder holder, int position) { holder.name.setText(mGifts[position]); Ion.with(holder.picture).placeholder(R.drawable.a).load(mGiftsPictures[position]); holder.id.setText(mIds[position]); } } }