Choose File Dialog [closed]

You just need to override onCreateDialog in an Activity.

//In an Activityprivate 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;}

Thanx schwiz for idea! Here is modified solution:

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;    }}

Use it on activity onCreate (directory selection option is commented):

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();}

I have created FolderLayout which may help you.This link helped me

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);    }}

And an Interface IFolderItemListener to add what to do when a fileItem is clicked

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}

Also an xml to define the row

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"/>

How to Use in your Application

In your xml,

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>

In Your Activity,

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();    }}

Import the libraries needed. Hope these help you...