监控某个目录的修改操作, 依赖 https://collimator.googlecode.com/svn-history/r22/trunk/src/com/toraleap/collimator/util/RecursiveFileObserver.java

MainActivity.java

package com.example.androx_dev;

import android.app.Activity;
import android.os.Bundle;
import android.os.FileObserver;
import android.view.Menu;

public class MainActivity extends Activity {

	private FileObserver watcher;
	
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		watcher = new RecursiveFileObserver("/mnt/sdcard", RecursiveFileObserver.CHANGES_ONLY);
		watcher.startWatching();
	}

	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
}