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The source code is released under:
GNU Lesser General Public License
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/* * ?Copyright 2013 Jose F. Maldonado?/*from w w w .j a v a2 s. c o m*/ * * This file is part of aFileDialog. * * aFileDialog 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. * * aFileDialog 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 aFileDialog. If not, see <http://www.gnu.org/licenses/>. */ package org.bakchuda.android.filePicker; import java.io.File; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.LinearLayout; import org.bakchuda.android.filePicker.R; /** * A file chooser implemented in an Activity. */ public class FileChooserActivity extends Activity implements FileChooser { // ----- Fields ----- // /** * The folder that the class opened by default. */ private File startFolder; /** * The core of the file chooser. */ private FileChooserCore core; /** * A boolean indicating if the 'back' button must be used to navigate to parent folders. */ private boolean useBackButton; // ----- Constants ----- // /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains the * path of the folder which files are going to be listed. */ public static final String INPUT_START_FOLDER = "input_start_folder"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if the user is going to select folders instead of select files. */ public static final String INPUT_FOLDER_MODE = "input_folder_mode"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if the user can create files. */ public static final String INPUT_CAN_CREATE_FILES = "input_can_create_files"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a regular expression which is going to be used as a filter to determine which files can be selected. */ public static final String INPUT_REGEX_FILTER = "input_regex_filter"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if only the files that can be selected must be displayed. */ public static final String INPUT_SHOW_ONLY_SELECTABLE = "input_show_only_selectable"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * an instance of the class FileChooserLabels that allows to override the default value of the labels. */ public static final String INPUT_LABELS = "input_labels"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if a confirmation dialog must be displayed when creating a file. */ public static final String INPUT_SHOW_CONFIRMATION_ON_CREATE = "input_show_confirmation_on_create"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if a confirmation dialog must be displayed when selecting a file. */ public static final String INPUT_SHOW_CONFIRMATION_ON_SELECT = "input_show_confirmation_on_select"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if the title must show the full path of the current's folder (true) or only * the folder's name (false). */ public static final String INPUT_SHOW_FULL_PATH_IN_TITLE = "input_show_full_path_in_title"; /** * Constant used for represent the key of the bundle object (inside the start's intent) which contains * a boolean that indicates if the 'Back' button must be used to navigate to the parents folder (true) or * if must follow the default behavior (and close the activity when the button is pressed). */ public static final String INPUT_USE_BACK_BUTTON_TO_NAVIGATE = "input_use_back_button_to_navigate"; /** * Constant used for represent the key of the bundle object (inside the result's intent) which contains the * File object, that represents the file selected by the user or the folder in which the user wants to create * a file. */ public static final String OUTPUT_FILE_OBJECT = "output_file_object"; /** * Constant used for represent the key of the bundle object (inside the result's intent) which contains the * name of the file that the user wants to create. */ public static final String OUTPUT_NEW_FILE_NAME = "output_new_file_name"; // ---- Activity methods ----- // /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { // Call superclass creator. super.onCreate(savedInstanceState); // Set layout. this.setContentView(R.layout.daidalos_file_chooser); // Set the background color. LinearLayout layout = (LinearLayout) this.findViewById(R.id.rootLayout); layout.setBackgroundColor(getResources().getColor(R.color.daidalos_backgroud)); // Initialize fields. this.useBackButton = false; // Create the core of the file chooser. this.core = new FileChooserCore(this); // Verify if the optional parameters has been defined. String folderPath = null; Bundle extras = this.getIntent().getExtras(); if(extras != null) { if(extras.containsKey(INPUT_START_FOLDER)) folderPath = extras.getString(INPUT_START_FOLDER); if(extras.containsKey(INPUT_REGEX_FILTER)) core.setFilter(extras.getString(INPUT_REGEX_FILTER)); if(extras.containsKey(INPUT_SHOW_ONLY_SELECTABLE)) core.setShowOnlySelectable(extras.getBoolean(INPUT_SHOW_ONLY_SELECTABLE)); if(extras.containsKey(INPUT_FOLDER_MODE)) core.setFolderMode(extras.getBoolean(INPUT_FOLDER_MODE)); if(extras.containsKey(INPUT_CAN_CREATE_FILES)) core.setCanCreateFiles(extras.getBoolean(INPUT_CAN_CREATE_FILES)); if(extras.containsKey(INPUT_LABELS)) core.setLabels((FileChooserLabels) extras.get(INPUT_LABELS)); if(extras.containsKey(INPUT_SHOW_CONFIRMATION_ON_CREATE)) core.setShowConfirmationOnCreate(extras.getBoolean(INPUT_SHOW_CONFIRMATION_ON_CREATE)); if(extras.containsKey(INPUT_SHOW_CONFIRMATION_ON_SELECT)) core.setShowConfirmationOnSelect(extras.getBoolean(INPUT_SHOW_CONFIRMATION_ON_SELECT)); if(extras.containsKey(INPUT_SHOW_FULL_PATH_IN_TITLE)) core.setShowFullPathInTitle(extras.getBoolean(INPUT_SHOW_FULL_PATH_IN_TITLE)); if(extras.containsKey(INPUT_USE_BACK_BUTTON_TO_NAVIGATE)) this.useBackButton = extras.getBoolean(INPUT_USE_BACK_BUTTON_TO_NAVIGATE); } // Load the files of a folder. core.loadFolder(folderPath); this.startFolder = this.core.getCurrentFolder(); // Add a listener for when a file is selected. core.addListener(new FileChooserCore.OnFileSelectedListener() { public void onFileSelected(File folder, String name) { // Pass the data through an intent. Intent intent = new Intent(); Bundle bundle = new Bundle(); bundle.putSerializable(OUTPUT_FILE_OBJECT, folder); bundle.putString(OUTPUT_NEW_FILE_NAME, name); intent.putExtras(bundle); setResult(RESULT_OK, intent); finish(); } public void onFileSelected(File file) { // Pass the data through an intent. Intent intent = new Intent(); Bundle bundle = new Bundle(); bundle.putSerializable(OUTPUT_FILE_OBJECT, file); intent.putExtras(bundle); setResult(RESULT_OK, intent); finish(); } }); } /** Called when the user push the 'back' button. */ @Override public void onBackPressed() { // Verify if the activity must be finished or if the parent folder must be opened. File current = this.core.getCurrentFolder(); if(!this.useBackButton || current == null || current.getParent() == null || current.getPath().compareTo(this.startFolder.getPath()) == 0) { // Close activity. super.onBackPressed(); }else{ // Open parent. this.core.loadFolder(current.getParent()); } } // ----- FileChooser methods ----- // public LinearLayout getRootLayout() { View root = this.findViewById(R.id.rootLayout); return (root instanceof LinearLayout)? (LinearLayout)root : null; } public Context getContext() { //return this.getBaseContext(); return this; } public void setCurrentFolderName(String name) { this.setTitle(name); } }