android使用技巧知识

//监听数据库变化class SmsContent extends ContentObserver {        private Cursor cursor = null;         public SmsContent(Handler handler) {            super(handler);        }         @Override        public void onChange(boolean selfChange) {            super.onChange(selfChange);                }             }        }SmsContent content = new SmsContent(new Handler());        // 注册短信变化监听        this.getContentResolver().registerContentObserver(                Uri.parse("content://sms/"), true, content);