Java tutorial
/* * This source is part of the * _____ ___ ____ * __ / / _ \/ _ | / __/___ _______ _ * / // / , _/ __ |/ _/_/ _ \/ __/ _ `/ * \___/_/|_/_/ |_/_/ (_)___/_/ \_, / * /___/ * repository. * * Copyright (C) 2015 Carmen Alvarez (c@rmen.ca) * * 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 ca.rmen.android.networkmonitor.app.savetostorage; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.os.Parcelable; import android.support.v4.app.FragmentActivity; import java.io.File; import ca.rmen.android.networkmonitor.Constants; import ca.rmen.android.networkmonitor.app.dialog.DialogFragmentFactory; import ca.rmen.android.networkmonitor.app.dialog.filechooser.FileChooserDialogFragment; import ca.rmen.android.networkmonitor.app.prefs.NetMonPreferences; import ca.rmen.android.networkmonitor.util.Log; /** * Invisible activity which expects a file as a Uri in the {@link Intent#EXTRA_STREAM} extra. * This activity shows a folder chooser dialog to the user. Once the folder is * selected, this launches the {@link SaveToStorageService} service to save the file in * the selected folder, and exits without waiting for the service to complete. */ public class SaveToStorageActivity extends FragmentActivity implements FileChooserDialogFragment.FileChooserDialogListener { private static final String TAG = Constants.TAG + SaveToStorageActivity.class.getSimpleName(); private static final int ACTION_SAVE_TO_STORAGE = 1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Log.v(TAG, "onCreate: bundle=" + savedInstanceState); if (savedInstanceState == null) { Parcelable extra = getIntent().getParcelableExtra(Intent.EXTRA_STREAM); if (extra == null || !(extra instanceof Uri)) { SaveToStorage.displayErrorToast(this); return; } Uri sourceFileUri = (Uri) extra; if (!"file".equals(sourceFileUri.getScheme())) { SaveToStorage.displayErrorToast(this); return; } if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) { SaveToStorage.displayErrorToast(this); return; } File initialFolder = NetMonPreferences.getInstance(this).getExportFolder(); DialogFragmentFactory.showFileChooserDialog(this, initialFolder, true, ACTION_SAVE_TO_STORAGE); } } @Override public void onFileSelected(int actionId, File file) { Log.v(TAG, "onFileSelected: file = " + file); NetMonPreferences.getInstance(this).setExportFolder(file); Uri uri = getIntent().getParcelableExtra(Intent.EXTRA_STREAM); File sourceFile = new File(uri.getPath()); // If the user picked a file, we'll save to that file. // If the user picked a folder, we'll save in that folder, with the original file name. final File destFile; if (file.isDirectory()) destFile = new File(file, sourceFile.getName()); else destFile = file; Intent intent = new Intent(this, SaveToStorageService.class); intent.putExtra(SaveToStorageService.EXTRA_SOURCE_FILE, sourceFile); intent.putExtra(SaveToStorageService.EXTRA_DESTINATION_FILE, destFile); startService(intent); finish(); } @Override public void onDismiss(int actionId) { Log.v(TAG, "onDismiss"); finish(); } }