Created
November 2, 2010 02:24
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Detect file change using FileObserver on Android
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| private class PathFileObserver extends FileObserver{ | |
| static final String TAG="FILEOBSERVER"; | |
| /** | |
| * should be end with File.separator | |
| */ | |
| String rootPath; | |
| static final int mask = (FileObserver.CREATE | | |
| FileObserver.DELETE | | |
| FileObserver.DELETE_SELF | | |
| FileObserver.MODIFY | | |
| FileObserver.MOVED_FROM | | |
| FileObserver.MOVED_TO | | |
| FileObserver.MOVE_SELF); | |
| public PathFileObserver(String root){ | |
| super(root, mask); | |
| if (! root.endsWith(File.separator)){ | |
| root += File.separator; | |
| } | |
| rootPath = root; | |
| } | |
| public void onEvent(int event, String path) { | |
| switch(event){ | |
| case FileObserver.CREATE: | |
| Log.d(TAG, "CREATE:" + rootPath + path); | |
| break; | |
| case FileObserver.DELETE: | |
| Log.d(TAG, "DELETE:" + rootPath + path); | |
| break; | |
| case FileObserver.DELETE_SELF: | |
| Log.d(TAG, "DELETE_SELF:" + rootPath + path); | |
| break; | |
| case FileObserver.MODIFY: | |
| Log.d(TAG, "MODIFY:" + rootPath + path); | |
| break; | |
| case FileObserver.MOVED_FROM: | |
| Log.d(TAG, "MOVED_FROM:" + rootPath + path); | |
| break; | |
| case FileObserver.MOVED_TO: | |
| Log.d(TAG, "MOVED_TO:" + path); | |
| break; | |
| case FileObserver.MOVE_SELF: | |
| Log.d(TAG, "MOVE_SELF:" + path); | |
| break; | |
| default: | |
| // just ignore | |
| break; | |
| } | |
| } | |
| public void close(){ | |
| super.finalize(); | |
| } | |
| } |
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I saw that message (or something like that) when i was trying to use constructor FileObserver(File). Use of deprecated FileObserver(String) solved my problem. Don't know why...
And for a while look at FixedFileObserver. It's in russian, but code is "in" java. Original FileObserver has bugs.