demo.chen.com.androiddemo.fragment.CheeseListFragment.java Source code

Introduction

Here is the source code for demo.chen.com.androiddemo.fragment.CheeseListFragment.java

Source

/*
 * 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 demo.chen.com.androiddemo.fragment;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import demo.chen.com.androiddemo.R;
import demo.chen.com.androiddemo.activity.CheeseDetailActivity;
import demo.chen.com.androiddemo.base.BaseItem;
import demo.chen.com.androiddemo.base.Cheeses;

public class CheeseListFragment extends Fragment {

    private RecyclerView rv;

    public CheeseListFragment() {
        super();
    }

    public static CheeseListFragment newInstance(ArrayList<BaseItem> arg) {
        CheeseListFragment fragment = new CheeseListFragment();
        Bundle bundle = new Bundle();
        bundle.putParcelableArrayList("list", arg);
        fragment.setArguments(bundle);
        return fragment;
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        rv = (RecyclerView) inflater.inflate(R.layout.fragment_cheese_list, container, false);
        Bundle bundle = getArguments();

        List<BaseItem> list = null;
        if (bundle != null) {
            list = bundle.getParcelableArrayList("list");
        }
        setupRecyclerView(list);
        return rv;
    }

    public void setupRecyclerView(List<BaseItem> data) {
        rv.setLayoutManager(new LinearLayoutManager(rv.getContext()));
        if (data == null) {
            return;
        }
        rv.setAdapter(new SimpleStringRecyclerViewAdapter(getActivity(), data));
    }

    private List<String> getRandomSublist(String[] array, int amount) {
        ArrayList<String> list = new ArrayList<>(amount);
        Random random = new Random();
        while (list.size() < amount) {
            list.add(array[random.nextInt(array.length)]);
        }
        return list;
    }

    public static class SimpleStringRecyclerViewAdapter
            extends RecyclerView.Adapter<SimpleStringRecyclerViewAdapter.ViewHolder> {

        private final TypedValue mTypedValue = new TypedValue();
        private int mBackground;
        private List<BaseItem> mValues;

        public static class ViewHolder extends RecyclerView.ViewHolder {
            public String mBoundString;

            public final View mView;
            public final ImageView mImageView;
            public final TextView mTextView;

            public ViewHolder(View view) {
                super(view);
                mView = view;
                mImageView = (ImageView) view.findViewById(R.id.avatar);
                mTextView = (TextView) view.findViewById(android.R.id.text1);
            }

            @Override
            public String toString() {
                return super.toString() + " '" + mTextView.getText();
            }
        }

        public BaseItem getValueAt(int position) {
            return mValues.get(position);
        }

        public SimpleStringRecyclerViewAdapter(Context context, List<BaseItem> items) {
            context.getTheme().resolveAttribute(R.attr.selectableItemBackground, mTypedValue, true);
            mBackground = mTypedValue.resourceId;
            mValues = items;
        }

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
            view.setBackgroundResource(mBackground);
            return new ViewHolder(view);
        }

        @Override
        public void onBindViewHolder(final ViewHolder holder, final int position) {
            holder.mBoundString = mValues.get(position).getName();
            holder.mTextView.setText(mValues.get(position).getName());

            holder.mView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Context context = v.getContext();
                    Intent intent = new Intent(context, mValues.get(position).getItemClass());
                    intent.putExtra(CheeseDetailActivity.EXTRA_NAME, holder.mBoundString);

                    context.startActivity(intent);
                }
            });

            Glide.with(holder.mImageView.getContext()).load(Cheeses.getRandomCheeseDrawable()).fitCenter()
                    .into(holder.mImageView);
        }

        @Override
        public int getItemCount() {
            return mValues.size();
        }
    }
}