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DirectorySelection / src / com.example.android.directoryselection /

DirectoryEntryAdapter.java

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/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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*      http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.directoryselection;
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import android.support.v7.widget.RecyclerView;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import android.widget.TextView;
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import java.util.List;
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/**
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 * Provide views to RecyclerView with the directory entries.
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 */
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public class DirectoryEntryAdapter extends RecyclerView.Adapter<DirectoryEntryAdapter.ViewHolder> {
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    static final String DIRECTORY_MIME_TYPE = "vnd.android.document/directory";
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    private List<DirectoryEntry> mDirectoryEntries;
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    /**
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     * Provide a reference to the type of views that you are using (custom ViewHolder)
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     */
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    public static class ViewHolder extends RecyclerView.ViewHolder {
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        private final TextView mFileName;
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        private final TextView mMimeType;
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        private final ImageView mImageView;
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        public ViewHolder(View v) {
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            super(v);
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            mFileName = (TextView) v.findViewById(R.id.textview_filename);
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            mMimeType = (TextView) v.findViewById(R.id.textview_mimetype);
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            mImageView = (ImageView) v.findViewById(R.id.entry_image);
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        }
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        public TextView getFileName() {
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            return mFileName;
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        }
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        public TextView getMimeType() {
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            return mMimeType;
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        }
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        public ImageView getImageView() {
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            return mImageView;
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        }
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    }
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    /**
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     * Initialize the directory entries of the Adapter.
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     *
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     * @param directoryEntries an array of {@link DirectoryEntry}.
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     */
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    public DirectoryEntryAdapter(List<DirectoryEntry> directoryEntries) {
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        mDirectoryEntries = directoryEntries;
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    }
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    @Override
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    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
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        View v = LayoutInflater.from(viewGroup.getContext())
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                .inflate(R.layout.directory_item, viewGroup, false);
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        return new ViewHolder(v);
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    }
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    @Override
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    public void onBindViewHolder(ViewHolder viewHolder, final int position) {
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        viewHolder.getFileName().setText(mDirectoryEntries.get(position).fileName);
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        viewHolder.getMimeType().setText(mDirectoryEntries.get(position).mimeType);
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        if (DIRECTORY_MIME_TYPE.equals(mDirectoryEntries.get(position).mimeType)) {
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            viewHolder.getImageView().setImageResource(R.drawable.ic_folder_grey600_36dp);
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        } else {
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            viewHolder.getImageView().setImageResource(R.drawable.ic_description_grey600_36dp);
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        }
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    }
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    @Override
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    public int getItemCount() {
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        return mDirectoryEntries.size();
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    }
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    public void setDirectoryEntries(List<DirectoryEntry> directoryEntries) {
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        mDirectoryEntries = directoryEntries;
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    }
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}
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