Java tutorial
/* * ************************************************************************* * FileBrowserFragment.java * ************************************************************************** * Copyright 2015 VLC authors and VideoLAN * Author: Geoffrey Mtais * * 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 2 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. * *************************************************************************** */ package org.videolan.vlc.gui.browser; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.support.v4.app.Fragment; import android.support.v7.app.AlertDialog; import android.support.v7.widget.AppCompatEditText; import android.text.InputType; import android.text.TextUtils; import android.view.MenuItem; import org.videolan.libvlc.util.AndroidUtil; import org.videolan.vlc.MediaDatabase; import org.videolan.vlc.MediaLibrary; import org.videolan.vlc.MediaWrapper; import org.videolan.vlc.R; import org.videolan.vlc.gui.AudioPlayerContainerActivity; import org.videolan.vlc.util.AndroidDevices; import org.videolan.vlc.util.CustomDirectories; import org.videolan.vlc.util.Util; import org.videolan.vlc.util.WeakHandler; import java.io.File; public class FileBrowserFragment extends BaseBrowserFragment { private AlertDialog mAlertDialog; public FileBrowserFragment() { super(); ROOT = AndroidDevices.EXTERNAL_PUBLIC_DIRECTORY; } @Override public void onCreate(Bundle bundle) { super.onCreate(bundle); mRoot = mMrl == null; } @Override protected Fragment createFragment() { return new FileBrowserFragment(); } public String getTitle() { if (mRoot) return getCategoryTitle(); else { String title = mMrl; if (mCurrentMedia != null) { if (TextUtils.equals(AndroidDevices.EXTERNAL_PUBLIC_DIRECTORY, mMrl)) title = getString(R.string.internal_memory); else title = mCurrentMedia.getTitle(); } return title; } } @Override protected String getCategoryTitle() { return getString(R.string.directories); } @Override protected void browseRoot() { final Activity context = getActivity(); mAdapter.updateMediaDirs(); new Thread(new Runnable() { @Override public void run() { String storages[] = AndroidDevices.getMediaDirectories(); MediaWrapper directory; for (String mediaDirLocation : storages) { if (!(new File(mediaDirLocation).exists())) continue; directory = new MediaWrapper(AndroidUtil.PathToUri(mediaDirLocation)); directory.setType(MediaWrapper.TYPE_DIR); if (TextUtils.equals(AndroidDevices.EXTERNAL_PUBLIC_DIRECTORY, mediaDirLocation)) directory.setTitle(getString(R.string.internal_memory)); mAdapter.addItem(directory, false, false); } mHandler.sendEmptyMessage(BrowserFragmentHandler.MSG_HIDE_LOADING); if (mReadyToDisplay) { context.runOnUiThread(new Runnable() { @Override public void run() { updateEmptyView(); mAdapter.notifyDataSetChanged(); parseSubDirectories(); } }); } } }).start(); } public void onStart() { super.onStart(); if (mReadyToDisplay) update(); } @Override protected void updateDisplay() { super.updateDisplay(); if (isRootDirectory()) mAdapter.updateMediaDirs(); } @Override public void onStop() { super.onStop(); if (mAlertDialog != null && mAlertDialog.isShowing()) mAlertDialog.dismiss(); } public void showAddDirectoryDialog() { final Context context = getActivity(); AlertDialog.Builder builder = new AlertDialog.Builder(context); final AppCompatEditText input = new AppCompatEditText(context); if (!AndroidUtil.isHoneycombOrLater()) { input.setTextColor(getResources().getColor(R.color.grey50)); } input.setInputType(InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS); builder.setTitle(R.string.add_custom_path); builder.setMessage(R.string.add_custom_path_description); builder.setView(input); builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int which) { return; } }); builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String path = input.getText().toString().trim(); File f = new File(path); if (!f.exists() || !f.isDirectory()) { Util.snacker(getView(), getString(R.string.directorynotfound, path)); return; } CustomDirectories.addCustomDirectory(f.getAbsolutePath()); refresh(); ((AudioPlayerContainerActivity) getActivity()).updateLib(); } }); mAlertDialog = builder.show(); } @Override protected boolean handleContextItemSelected(MenuItem item, int position) { if (mRoot) { if (item.getItemId() == R.id.directory_remove_custom_path) { BaseBrowserAdapter.Storage storage = (BaseBrowserAdapter.Storage) mAdapter.getItem(position); MediaDatabase.getInstance().recursiveRemoveDir(storage.getUri().getPath()); CustomDirectories.removeCustomDirectory(storage.getUri().getPath()); mAdapter.updateMediaDirs(); mAdapter.removeItem(position, true); ((AudioPlayerContainerActivity) getActivity()).updateLib(); return true; } else return false; } else return super.handleContextItemSelected(item, position); } }