android,内容观察者,sms数据库变化提醒

{ContentResolver resolver =getContentResolver();Uri uri = Uri.parse("content://sms/");//如果第二参数为true 则只匹配uri前缀。如果为false则完全匹配resolver.registerContentObserver(uri, true, observer);}private class MyObserver extends ContentObserver{public MyObserver(Handler handler){super(handler);}@Overridepublic void onChange(boolean selfChange){super.onChange(selfChange);Toast.makeText(getApplicationContext(), "数据库的内容变化了", 1).show();}}

=====加入权限

read_sms