2012-03-31 53 views

回答

0

我已经完成了。

protected class MyContentObserver extends ContentObserver { 

    public MyContentObserver() { 
     super(null); 
     text.append("created at + " + new GregorianCalendar().getTime() + "\n"); 
    } 

    @Override 
    public void onChange(boolean selfChange) { 
     super.onChange(selfChange); 
     text.append("Changed\n"); 
    } 
} 

,也是我们需要注册ContentObserver:

this.getApplicationContext() 
      .getContentResolver() 
      .registerContentObserver(Contacts.CONTENT_URI, true, 
        new MyContentObserver());