Java tutorial
/* * Copyright (C) 2014 Vlad Mihalachi * * This file is part of Text Editor 8000. * * Text Editor 8000 is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Text Editor 8000 is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.maskyn.fileeditorpro.adapter; import android.content.Context; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Filter; import android.widget.ImageView; import android.widget.TextView; import org.apache.commons.io.FilenameUtils; import java.util.Arrays; import java.util.LinkedList; import com.maskyn.fileeditorpro.R; import com.maskyn.fileeditorpro.util.MimeTypes; public class AdapterDetailedList extends ArrayAdapter<AdapterDetailedList.FileDetail> { // Layout Inflater private final LayoutInflater inflater; private final LinkedList<FileDetail> orig; private CustomFilter customFilter; // List of file details private LinkedList<FileDetail> fileDetails; public AdapterDetailedList(final Context context, final LinkedList<FileDetail> fileDetails, final boolean isRoot) { super(context, R.layout.item_file_list, fileDetails); this.fileDetails = fileDetails; this.orig = fileDetails; this.inflater = LayoutInflater.from(context); if (!isRoot) { this.fileDetails.addFirst(new FileDetail("..", context.getString(R.string.folder), "")); } else { this.fileDetails.addFirst( new FileDetail(context.getString(R.string.home), context.getString(R.string.folder), "")); } } @Override public View getView(final int position, View convertView, final ViewGroup parent) { if (convertView == null) { convertView = this.inflater.inflate(R.layout.item_file_list, null); final ViewHolder hold = new ViewHolder(); hold.nameLabel = (TextView) convertView.findViewById(android.R.id.text1); hold.detailLabel = (TextView) convertView.findViewById(android.R.id.text2); hold.icon = (ImageView) convertView.findViewById(android.R.id.icon); convertView.setTag(hold); final FileDetail fileDetail = fileDetails.get(position); final String fileName = fileDetail.getName(); setIcon(hold, fileDetail); hold.nameLabel.setText(fileName); hold.detailLabel.setText(fileDetail.getSize() + "\t\t" + fileDetail.getDateModified()); } else { final ViewHolder hold = ((ViewHolder) convertView.getTag()); final FileDetail fileDetail = fileDetails.get(position); final String fileName = fileDetail.getName(); setIcon(hold, fileDetail); hold.nameLabel.setText(fileName); hold.detailLabel.setText(fileDetail.getSize() + "\t\t" + fileDetail.getDateModified()); } return convertView; } @Override public int getCount() { return fileDetails.size(); } private void setIcon(final ViewHolder viewHolder, final FileDetail fileDetail) { final String fileName = fileDetail.getName(); final String ext = FilenameUtils.getExtension(fileName); if (fileDetail.isFolder()) { viewHolder.icon.setImageResource(R.color.file_folder); } else if (Arrays.asList(MimeTypes.MIME_HTML).contains(ext) || ext.endsWith("html")) { viewHolder.icon.setImageResource(R.color.file_html); } else if (Arrays.asList(MimeTypes.MIME_CODE).contains(ext) || fileName.endsWith("css") || fileName.endsWith("js")) { viewHolder.icon.setImageResource(R.color.file_code); } else if (Arrays.asList(MimeTypes.MIME_ARCHIVE).contains(ext)) { viewHolder.icon.setImageResource(R.color.file_archive); } else if (Arrays.asList(MimeTypes.MIME_MUSIC).contains(ext)) { viewHolder.icon.setImageResource(R.color.file_media_music); } else if (Arrays.asList(MimeTypes.MIME_PICTURE).contains(ext)) { viewHolder.icon.setImageResource(R.color.file_media_picture); } else if (Arrays.asList(MimeTypes.MIME_VIDEO).contains(ext)) { viewHolder.icon.setImageResource(R.color.file_media_video); } else { viewHolder.icon.setImageResource(R.color.file_text); } } @Override public Filter getFilter() { if (customFilter == null) { customFilter = new CustomFilter(); } return customFilter; } public static class ViewHolder { // Name of the file public TextView nameLabel; // Size of the file public TextView detailLabel; // Icon of the file public ImageView icon; } public static class FileDetail { private final String name; private final String size; private final String dateModified; private final boolean isFolder; public FileDetail(String name, String size, String dateModified) { this.name = name; this.size = size; this.dateModified = dateModified; isFolder = TextUtils.isEmpty(dateModified); } public String getDateModified() { return dateModified; } public String getSize() { return size; } public String getName() { return name; } public boolean isFolder() { return isFolder; } } private class CustomFilter extends Filter { @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults results = new FilterResults(); if (constraint == null || constraint.length() == 0) { results.values = orig; results.count = orig.size(); } else { LinkedList<FileDetail> nHolderList = new LinkedList<>(); for (FileDetail h : orig) { if (h.getName().toLowerCase().contains(constraint.toString().toLowerCase())) nHolderList.add(h); } results.values = nHolderList; results.count = nHolderList.size(); } return results; } @SuppressWarnings("unchecked") @Override protected void publishResults(CharSequence constraint, FilterResults results) { fileDetails = (LinkedList<FileDetail>) results.values; notifyDataSetChanged(); } } }