Choisissez la boîte de dialogue de fichier

Question

Est-ce que quelqu'un connaît un dialogue de choix de fichier complet? Peut-être que vous pouvez filtrer tous les fichiers sauf ceux avec des extensions spécifiques?

Je n'ai rien trouvé assez léger pour être implémenté facilement dans l'un de mes projets. La seule autre option semble utiliser les intentions d'ouverture de OI FileManager, mais cela nécessite que l'utilisateur ait déjà installé le gestionnaire de fichiers.

Je serais reconnaissant si quelqu'un pouvait signaler un dialogue qui permettrait à l'utilisateur de parcourir des dossiers, de sélectionner un fichier et de renvoyer le chemin.

schwiz · Accepted Answer

Il vous suffit de remplacer onCreateDialog dans une activité.

//In an Activity private String[] mFileList; private File mPath = new File(Environment.getExternalStorageDirectory() + "//yourdir//"); private String mChosenFile; private static final String FTYPE = ".txt"; private static final int DIALOG_LOAD_FILE = 1000; private void loadFileList() { try { mPath.mkdirs(); } catch(SecurityException e) { Log.e(TAG, "unable to write on the sd card " + e.toString()); } if(mPath.exists()) { FilenameFilter filter = new FilenameFilter() { @Override public boolean accept(File dir, String filename) { File sel = new File(dir, filename); return filename.contains(FTYPE) || sel.isDirectory(); } }; mFileList = mPath.list(filter); } else { mFileList= new String[0]; } } protected Dialog onCreateDialog(int id) { Dialog dialog = null; AlertDialog.Builder builder = new Builder(this); switch(id) { case DIALOG_LOAD_FILE: builder.setTitle("Choose your file"); if(mFileList == null) { Log.e(TAG, "Showing file picker before loading the file list"); dialog = builder.create(); return dialog; } builder.setItems(mFileList, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { mChosenFile = mFileList[which]; //you can do stuff with the file here too } }); break; } dialog = builder.show(); return dialog; }

Kirill Mikhailov · Answer

Merci schwiz pour l'idée! Voici la solution modifiée:

public class FileDialog { private static final String PARENT_DIR = ".."; private final String TAG = getClass().getName(); private String[] fileList; private File currentPath; public interface FileSelectedListener { void fileSelected(File file); } public interface DirectorySelectedListener { void directorySelected(File directory); } private ListenerList<FileSelectedListener> fileListenerList = new ListenerList<FileDialog.FileSelectedListener>(); private ListenerList<DirectorySelectedListener> dirListenerList = new ListenerList<FileDialog.DirectorySelectedListener>(); private final Activity activity; private boolean selectDirectoryOption; private String fileEndsWith; /** * @param activity * @param initialPath */ public FileDialog(Activity activity, File initialPath) { this(activity, initialPath, null); } public FileDialog(Activity activity, File initialPath, String fileEndsWith) { this.activity = activity; setFileEndsWith(fileEndsWith); if (!initialPath.exists()) initialPath = Environment.getExternalStorageDirectory(); loadFileList(initialPath); } /** * @return file dialog */ public Dialog createFileDialog() { Dialog dialog = null; AlertDialog.Builder builder = new AlertDialog.Builder(activity); builder.setTitle(currentPath.getPath()); if (selectDirectoryOption) { builder.setPositiveButton("Select directory", new OnClickListener() { public void onClick(DialogInterface dialog, int which) { Log.d(TAG, currentPath.getPath()); fireDirectorySelectedEvent(currentPath); } }); } builder.setItems(fileList, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { String fileChosen = fileList[which]; File chosenFile = getChosenFile(fileChosen); if (chosenFile.isDirectory()) { loadFileList(chosenFile); dialog.cancel(); dialog.dismiss(); showDialog(); } else fireFileSelectedEvent(chosenFile); } }); dialog = builder.show(); return dialog; } public void addFileListener(FileSelectedListener listener) { fileListenerList.add(listener); } public void removeFileListener(FileSelectedListener listener) { fileListenerList.remove(listener); } public void setSelectDirectoryOption(boolean selectDirectoryOption) { this.selectDirectoryOption = selectDirectoryOption; } public void addDirectoryListener(DirectorySelectedListener listener) { dirListenerList.add(listener); } public void removeDirectoryListener(DirectorySelectedListener listener) { dirListenerList.remove(listener); } /** * Show file dialog */ public void showDialog() { createFileDialog().show(); } private void fireFileSelectedEvent(final File file) { fileListenerList.fireEvent(new FireHandler<FileDialog.FileSelectedListener>() { public void fireEvent(FileSelectedListener listener) { listener.fileSelected(file); } }); } private void fireDirectorySelectedEvent(final File directory) { dirListenerList.fireEvent(new FireHandler<FileDialog.DirectorySelectedListener>() { public void fireEvent(DirectorySelectedListener listener) { listener.directorySelected(directory); } }); } private void loadFileList(File path) { this.currentPath = path; List<String> r = new ArrayList<String>(); if (path.exists()) { if (path.getParentFile() != null) r.add(PARENT_DIR); FilenameFilter filter = new FilenameFilter() { public boolean accept(File dir, String filename) { File sel = new File(dir, filename); if (!sel.canRead()) return false; if (selectDirectoryOption) return sel.isDirectory(); else { boolean endsWith = fileEndsWith != null ? filename.toLowerCase().endsWith(fileEndsWith) : true; return endsWith || sel.isDirectory(); } } }; String[] fileList1 = path.list(filter); for (String file : fileList1) { r.add(file); } } fileList = (String[]) r.toArray(new String[]{}); } private File getChosenFile(String fileChosen) { if (fileChosen.equals(PARENT_DIR)) return currentPath.getParentFile(); else return new File(currentPath, fileChosen); } private void setFileEndsWith(String fileEndsWith) { this.fileEndsWith = fileEndsWith != null ? fileEndsWith.toLowerCase() : fileEndsWith; } } class ListenerList<L> { private List<L> listenerList = new ArrayList<L>(); public interface FireHandler<L> { void fireEvent(L listener); } public void add(L listener) { listenerList.add(listener); } public void fireEvent(FireHandler<L> fireHandler) { List<L> copy = new ArrayList<L>(listenerList); for (L l : copy) { fireHandler.fireEvent(l); } } public void remove(L listener) { listenerList.remove(listener); } public List<L> getListenerList() { return listenerList; } }

Utilisez-le sur l’activité onCreate (l’option de sélection de répertoire est commentée):

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); File mPath = new File(Environment.getExternalStorageDirectory() + "//DIR//"); fileDialog = new FileDialog(this, mPath, ".txt"); fileDialog.addFileListener(new FileDialog.FileSelectedListener() { public void fileSelected(File file) { Log.d(getClass().getName(), "selected file " + file.toString()); } }); //fileDialog.addDirectoryListener(new FileDialog.DirectorySelectedListener() { // public void directorySelected(File directory) { // Log.d(getClass().getName(), "selected dir " + directory.toString()); // } //}); //fileDialog.setSelectDirectoryOption(false); fileDialog.showDialog(); }

sonu thomas · Answer

J'ai créé FolderLayout qui peut vous aider. Ceci lien m'a aidé

folderview.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:Android="http://schemas.Android.com/apk/res/Android" Android:orientation="vertical" Android:layout_width="match_parent" Android:layout_height="match_parent"> <TextView Android:id="@+id/path" Android:text="Path" Android:layout_width="match_parent" Android:layout_height="wrap_content"></TextView> <ListView Android:layout_width="fill_parent" Android:layout_height="wrap_content" Android:id="@+id/list"></ListView> </LinearLayout>

FolderLayout.Java

package com.testsample.activity; public class FolderLayout extends LinearLayout implements OnItemClickListener { Context context; IFolderItemListener folderListener; private List<String> item = null; private List<String> path = null; private String root = "/"; private TextView myPath; private ListView lstView; public FolderLayout(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub this.context = context; LayoutInflater layoutInflater = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view = layoutInflater.inflate(R.layout.folderview, this); myPath = (TextView) findViewById(R.id.path); lstView = (ListView) findViewById(R.id.list); Log.i("FolderView", "Constructed"); getDir(root, lstView); } public void setIFolderItemListener(IFolderItemListener folderItemListener) { this.folderListener = folderItemListener; } //Set Directory for view at anytime public void setDir(String dirPath){ getDir(dirPath, lstView); } private void getDir(String dirPath, ListView v) { myPath.setText("Location: " + dirPath); item = new ArrayList<String>(); path = new ArrayList<String>(); File f = new File(dirPath); File[] files = f.listFiles(); if (!dirPath.equals(root)) { item.add(root); path.add(root); item.add("../"); path.add(f.getParent()); } for (int i = 0; i < files.length; i++) { File file = files[i]; path.add(file.getPath()); if (file.isDirectory()) item.add(file.getName() + "/"); else item.add(file.getName()); } Log.i("Folders", files.length + ""); setItemList(item); } //can manually set Item to display, if u want public void setItemList(List<String> item){ ArrayAdapter<String> fileList = new ArrayAdapter<String>(context, R.layout.row, item); lstView.setAdapter(fileList); lstView.setOnItemClickListener(this); } public void onListItemClick(ListView l, View v, int position, long id) { File file = new File(path.get(position)); if (file.isDirectory()) { if (file.canRead()) getDir(path.get(position), l); else { //what to do when folder is unreadable if (folderListener != null) { folderListener.OnCannotFileRead(file); } } } else { //what to do when file is clicked //You can add more,like checking extension,and performing separate actions if (folderListener != null) { folderListener.OnFileClicked(file); } } } public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub onListItemClick((ListView) arg0, arg0, arg2, arg3); } }

Et une interface IFolderItemListener pour ajouter quoi faire quand on clique sur un fileItem

IFolderItemListener.Java

public interface IFolderItemListener { void OnCannotFileRead(File file);//implement what to do folder is Unreadable void OnFileClicked(File file);//What to do When a file is clicked }

Aussi un xml pour définir la ligne

row.xml

<?xml version="1.0" encoding="utf-8"?> <TextView xmlns:Android="http://schemas.Android.com/apk/res/Android" Android:id="@+id/rowtext" Android:layout_width="fill_parent" Android:textSize="23sp" Android:layout_height="match_parent"/>

Comment utiliser dans votre application

Dans votre xml,

dossiers.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:Android="http://schemas.Android.com/apk/res/Android" Android:layout_width="match_parent" Android:layout_height="match_parent" Android:orientation="horizontal" Android:weightSum="1"> <com.testsample.activity.FolderLayout Android:layout_height="match_parent" layout="@layout/folderview" Android:layout_weight="0.35" Android:layout_width="200dp" Android:id="@+id/localfolders"></com.testsample.activity.FolderLayout></LinearLayout>

Dans votre activité,

SampleFolderActivity.Java

public class SampleFolderActivity extends Activity implements IFolderItemListener { FolderLayout localFolders; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); localFolders = (FolderLayout)findViewById(R.id.localfolders); localFolders.setIFolderItemListener(this); localFolders.setDir("./sys");//change directory if u want,default is root } //Your stuff here for Cannot open Folder public void OnCannotFileRead(File file) { // TODO Auto-generated method stub new AlertDialog.Builder(this) .setIcon(R.drawable.icon) .setTitle( "[" + file.getName() + "] folder can't be read!") .setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { } }).show(); } //Your stuff here for file Click public void OnFileClicked(File file) { // TODO Auto-generated method stub new AlertDialog.Builder(this) .setIcon(R.drawable.icon) .setTitle("[" + file.getName() + "]") .setPositiveButton("OK", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { } }).show(); } }