/*
* Copyright (c) 2015 Jonas Kalderstam
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.nononsenseapps.filepicker.sample;
import android.view.View;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.nononsenseapps.filepicker.FilePickerFragment;
import java.io.File;
/**
* A sample which demonstrates how appropriate methods
* can be overwritten in order to enable enhanced
* capabilities, in this case showing thumbnails of images.
* <p/>
* I am still listing all files, so I extend from the ready made
* SD-card browser classes. This allows this class to focus
* entirely on the image side of things.
*
* To load the image I am using the super great Glide library
* which only requires a single line of code in this file.
*/
public class ImagePickerFragment extends FilePickerFragment {
/**
* An extremely simple method for identifying images. This
* could be improved, but it's good enough for this example.
*
* @param file which could be an image
* @return true if the file can be previewed, false otherwise
*/
protected boolean isImage(File file) {
if (isDir(file)) {
return false;
}
return file.getPath().endsWith(".png") ||
file.getPath().endsWith(".PNG") ||
file.getPath().endsWith(".jpg") ||
file.getPath().endsWith(".JPG") ||
file.getPath().endsWith(".gif") ||
file.getPath().endsWith(".GIF");
}
/**
* Overriding this method allows us to inject a preview image
* in the layout
*
* @param vh to bind data from either a file or directory
* @param position 0 - n, where the header has been subtracted
* @param file to show info about
*/
@Override
public void onBindViewHolder(DirViewHolder vh, int position, File file) {
// Let the super method do its thing, we only care about the image
// We could load a specific layout in oncreateviewholder, but
// every item includes an image to hold the directory icon anyway
super.onBindViewHolder(vh, position, file);
// All we need to do is load the imageview with something useful, and make it visible
if (isImage(file)) {
vh.icon.setVisibility(View.VISIBLE);
Glide.with(this).load(file).centerCrop().into((ImageView) vh.icon);
}
}
}