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- /*
- * Copyright (C) 2013 Paul Burke
- *
- * 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 com.ipaulpro.afilechooser;
- import android.app.Activity;
- import android.os.Bundle;
- import android.os.Environment;
- import android.support.v4.app.ListFragment;
- import android.support.v4.app.LoaderManager;
- import android.support.v4.content.Loader;
- import android.view.View;
- import android.widget.ListView;
- import java.io.File;
- import java.util.List;
- /**
- * Fragment that displays a list of Files in a given path.
- *
- * @version 2013-12-11
- * @author paulburke (ipaulpro)
- */
- public class FileListFragment extends ListFragment implements
- LoaderManager.LoaderCallbacks<List<File>> {
- /**
- * Interface to listen for events.
- */
- public interface Callbacks {
- /**
- * Called when a file is selected from the list.
- *
- * @param file The file selected
- */
- public void onFileSelected(File file);
- }
- private static final int LOADER_ID = 0;
- private FileListAdapter mAdapter;
- private String mPath;
- private Callbacks mListener;
- /**
- * Create a new instance with the given file path.
- *
- * @param path The absolute path of the file (directory) to display.
- * @return A new Fragment with the given file path.
- */
- public static FileListFragment newInstance(String path) {
- FileListFragment fragment = new FileListFragment();
- Bundle args = new Bundle();
- args.putString(FileChooserActivity.PATH, path);
- fragment.setArguments(args);
- return fragment;
- }
- @Override
- public void onAttach(Activity activity) {
- super.onAttach(activity);
- try {
- mListener = (Callbacks) activity;
- } catch (ClassCastException e) {
- throw new ClassCastException(activity.toString()
- + " must implement FileListFragment.Callbacks");
- }
- }
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- mAdapter = new FileListAdapter(getActivity());
- mPath = getArguments() != null ? getArguments().getString(
- FileChooserActivity.PATH) : Environment
- .getExternalStorageDirectory().getAbsolutePath();
- }
- @Override
- public void onActivityCreated(Bundle savedInstanceState) {
- setEmptyText(getString(R.string.empty_directory));
- setListAdapter(mAdapter);
- setListShown(false);
- getLoaderManager().initLoader(LOADER_ID, null, this);
- super.onActivityCreated(savedInstanceState);
- }
- @Override
- public void onListItemClick(ListView l, View v, int position, long id) {
- FileListAdapter adapter = (FileListAdapter) l.getAdapter();
- if (adapter != null) {
- File file = (File) adapter.getItem(position);
- mPath = file.getAbsolutePath();
- mListener.onFileSelected(file);
- }
- }
- @Override
- public Loader<List<File>> onCreateLoader(int id, Bundle args) {
- return new FileLoader(getActivity(), mPath);
- }
- @Override
- public void onLoadFinished(Loader<List<File>> loader, List<File> data) {
- mAdapter.setListItems(data);
- if (isResumed())
- setListShown(true);
- else
- setListShownNoAnimation(true);
- }
- @Override
- public void onLoaderReset(Loader<List<File>> loader) {
- mAdapter.clear();
- }
- }
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