Monitor files and folders on your SD card

The Android System API provides the Fileobserver abstract class (Linux inotify mechanism) to listen to files or folders in the system/sdcard, Fileobserver class can open, create, The move and delete operations are monitored. Here's a look at the code implementation:

Set the file or folder you want to monitor Mfileobserver = new sdcardfileobserver (Environment.getexternalstoragedirectory () . GetPath ());//Start Monitoring mfileobserver.startwatching ();static class sdcardfileobserver extends  Fileobserver {    //mask: Specifies the type of event to listen to, default is fileobserver.all_events     public sdcardfileobserver (String path, int mask)  {         super (Path, mask);    }    public  Sdcardfileobserver (String path)  {        super (path);     }     @Override     public void onevent (int  event, string path)  {        final int  action = event & fileobserver.all_events;         switch  (Action) &NBSp {            case fileobserver.access:                 system.out.println (" event:  file or directory is accessed, path:  " + path);                 break;             case FileObserver.DELETE:                 system.out.println ("event:  file or directory is deleted, path: "  +  Path);                break;             case FileObserver.OPEN:                 system.out.println (" event:  file or directory is opened, &NBsp;path:  " + path);                 break;            case  FileObserver.MODIFY:                 system.out.println ("event:  file or directory was modified, path: "  + path);                 break;         }    }}

Monitor files and folders on your SD card