请参阅这篇文章。我认为您
observer.startWatching()在设置观察者后错过了通话。
observer = new FileObserver(pathToWatch) { // set up a file observer to watch this directory on sd card @Override public void onEvent(int event, String file) { //if(event == FileObserver.CREATE && !file.equals(".probe")){ // check if its a "create" and not equal to .probe because thats created every time camera is launched Log.d(TAG, "File created [" + pathToWatch + file + "]"); Toast.makeText(getbaseContext(), file + " was saved!", Toast.LENGTH_LONG).show(); //} } }; observer.startWatching(); //START OBSERVING
