select文件对话框
有谁知道一个完整的select文件对话框？ 也许有一个地方可以过滤除特定扩展名以外的所有文件？
我还没有find任何轻量级的东西来轻松实现我的项目之一。 唯一的其他select似乎是使用OI FileManager的开放意图，但是这需要用户已经安装了文件pipe理器。
如果有人能指出一个允许用户浏览文件夹并select一个文件并返回path的对话框，我将不胜感激。
你只需要在Activity中覆盖onCreateDialog 。
//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; }
感谢思想！ 这里是修改解决scheme：
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; } }
在活动onCreate上使用它（目录select选项被评论）：
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(); }
我已经创build了FolderLayout ，可以帮助你。 这个链接帮助了我
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); } }
还有一个接口IFolderItemListener用于添加单击fileItem时要执行的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 }
另外一个XML来定义行
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"/>
如何在您的应用程序中使用
在你的xml中，
folders.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>
在你的活动中，
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(); } }
导入所需的库。 希望这些帮助你…
最近我正在寻找一个文件/文件夹浏览器，并决定做一个新的浏览器活动（Android库）： https ： //github.com/vaal12/AndroidFileBrowser
匹配testing应用程序https://github.com/vaal12/FileBrowserTestApplication-是一个示例如何使用。;
允许从电话文件结构中select目录和文件。
我已经实现了三星文件select器对话框，它提供了打开，保存文件，文件扩展名filter，并在同一个对话框中创build新的目录我认为值得尝试的能力这里是链接你必须login到三星开发人员网站查看解决scheme
join混合：OI文件pipe理器有一个公共API在openintnts.org注册
http://www.openintents.org/filemanager
http://www.openintents.org/action/org-openintents-action-pick-file/
