Java tutorial
/* * Copyright (C) 2013 - 2014 Alexander "Evisceration" Martinz * * This program 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. * * This program 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 org.namelessrom.devicecontrol.modules.filepicker; import android.content.Context; import android.graphics.Color; import android.support.v4.content.ContextCompat; import android.text.format.Formatter; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import org.namelessrom.devicecontrol.R; import org.namelessrom.devicecontrol.objects.FlashItem; import org.namelessrom.devicecontrol.theme.AppResources; import org.namelessrom.devicecontrol.utils.ContentTypes; import org.namelessrom.devicecontrol.utils.SortHelper; import java.io.File; import java.util.ArrayList; import java.util.Collections; import java.util.Date; public class FileAdapter extends BaseAdapter { private final Context context; private ArrayList<File> files; private String fileType = ""; private int colorResId = -1; private FilePickerListener listener; public FileAdapter(Context context, FilePickerListener filePickerListener) { this.context = context; this.listener = filePickerListener; } public void setFiles(final ArrayList<File> files) { this.files = files; Collections.sort(this.files, SortHelper.sFileComparator); } @Override public int getCount() { return files.size(); } @Override public Object getItem(final int position) { return files.get(position); } @Override public long getItemId(final int position) { return 0; /* unused */ } public FileAdapter setFileType(final String fileType) { this.fileType = fileType; return this; } public FileAdapter setColor(final int colorResId) { this.colorResId = colorResId; return this; } private static final class ViewHolder { private final View rootView; private final ImageView icon; private final TextView name; private final TextView info; private ViewHolder(final View rootView) { this.rootView = rootView; this.icon = (ImageView) rootView.findViewById(R.id.file_icon); this.name = (TextView) rootView.findViewById(R.id.file_name); this.info = (TextView) rootView.findViewById(R.id.file_info); } } @Override public View getView(final int position, View v, final ViewGroup parent) { final ViewHolder viewHolder; if (v == null) { v = LayoutInflater.from(context).inflate(R.layout.list_item_file, parent, false); assert (v != null); viewHolder = new ViewHolder(v); v.setTag(viewHolder); } else { viewHolder = (ViewHolder) v.getTag(); } final File file = files.get(position); // we need to hack here as sometimes ../ is not properly recognized as directory final boolean isDirectory = file.isDirectory() || (file.getAbsolutePath() + File.separator).endsWith("../"); viewHolder.rootView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (listener != null) { if (isDirectory) { listener.onFilePicked(file); } else { listener.onFlashItemPicked(new FlashItem(file.getAbsolutePath())); } } } }); int color = AppResources.get().isDarkTheme() ? Color.WHITE : Color.BLACK; viewHolder.name.setText(file.getName()); if (isDirectory) { viewHolder.icon.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_folder)); viewHolder.info.setText(String.valueOf(new Date(file.lastModified()))); } else { viewHolder.icon.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_file)); viewHolder.info.setText(String.valueOf(new Date(file.lastModified())) + " | " + Formatter.formatFileSize(context, file.length())); // Color the list entry if a filetype is set, to make searching easier if (ContentTypes.isFiletypeMatching(file, fileType)) { if (colorResId > 0) { color = colorResId; } else { color = context.getResources().getColor(R.color.grass); } } } viewHolder.name.setTextColor(color); viewHolder.info.setTextColor(context.getResources().getColor(R.color.blueish_strong)); viewHolder.icon.setColorFilter(Color.parseColor("#FFFFFF")); viewHolder.icon.setColorFilter(color); return v; } }