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| public class RecursiveFileObserver extends FileObserver {
public static int CHANGES_ONLY = CREATE | DELETE | CLOSE_WRITE | MOVE_SELF | MOVED_FROM | MOVED_TO; List<SingleFileObserver> mObservers; String mPath; int mMask; public RecursiveFileObserver(String path) { this(path, ALL_EVENTS); } public RecursiveFileObserver(String path, int mask) { super(path, mask); mPath = path; mMask = mask; } @Override public void startWatching() { if (mObservers != null) return; mObservers = new ArrayList<SingleFileObserver>(); Stack<String> stack = new Stack<String>(); stack.push(mPath); while (!stack.isEmpty()) { String parent = stack.pop(); mObservers.add(new SingleFileObserver(parent, mMask)); File path = new File(parent); File[] files = path.listFiles(); if (null == files) continue; for (File f : files) { if (f.isDirectory() && !f.getName().equals(".") && !f.getName().equals("..")) { stack.push(f.getPath()); } } } for (SingleFileObserver sfo : mObservers) { sfo.startWatching(); } } @Override public void stopWatching() { if (mObservers == null) return; for (SingleFileObserver sfo : mObservers) { sfo.stopWatching(); } mObservers.clear(); mObservers = null; } @Override public void onEvent(int event, String path) { switch (event) { case FileObserver.ACCESS: Log.i("RecursiveFileObserver", "ACCESS: " + path); break; case FileObserver.ATTRIB: Log.i("RecursiveFileObserver", "ATTRIB: " + path); break; case FileObserver.CLOSE_NOWRITE: Log.i("RecursiveFileObserver", "CLOSE_NOWRITE: " + path); break; case FileObserver.CLOSE_WRITE: Log.i("RecursiveFileObserver", "CLOSE_WRITE: " + path); break; case FileObserver.CREATE: Log.i("RecursiveFileObserver", "CREATE: " + path); break; case FileObserver.DELETE: Log.i("RecursiveFileObserver", "DELETE: " + path); break; case FileObserver.DELETE_SELF: Log.i("RecursiveFileObserver", "DELETE_SELF: " + path); break; case FileObserver.MODIFY: Log.i("RecursiveFileObserver", "MODIFY: " + path); break; case FileObserver.MOVE_SELF: Log.i("RecursiveFileObserver", "MOVE_SELF: " + path); break; case FileObserver.MOVED_FROM: Log.i("RecursiveFileObserver", "MOVED_FROM: " + path); break; case FileObserver.MOVED_TO: Log.i("RecursiveFileObserver", "MOVED_TO: " + path); break; case FileObserver.OPEN: Log.i("RecursiveFileObserver", "OPEN: " + path); break; default: Log.i("RecursiveFileObserver", "DEFAULT(" + event + "): " + path); break; } }
class SingleFileObserver extends FileObserver { String mPath; public SingleFileObserver(String path) { this(path, ALL_EVENTS); mPath = path; } public SingleFileObserver(String path, int mask) { super(path, mask); mPath = path; } @Override public void onEvent(int event, String path) { String newPath = mPath + "/" + path; RecursiveFileObserver.this.onEvent(event, newPath); } } }
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