adapter

问题 i had a EditText , a button and a spinner . When click the button , the spinner will add a new item with name you entered in the EditText. But here is the question, my adapter.add() method seems doesn't work...here is my code: public class Spr extends Activity { Button bt1; EditText et; ArrayAdapter<CharSequence> adapter; Spinner spinner; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); bt1 = (Button)this

问题 Can't I register a bunch of XmlAdapter s to Marshaller | Unmarshaller so that I wouldn't need to specify @XmlJavaTypeAdapter on each filed, whose type isn't natively JAXB-supported? I find it somewhat redundant. BTW, someMarshaller.setAdapter(...) seem not to do anything. 回答1: This is a quite a good question ! The short answer is that no , using setAdapter on marshaller / unmarshaller does not mean that you don't have to use @XmlJavaTypeAdapter . Let me explain this with a hypothetical (yet

问题 I have a ViewPager with some fragments. Each fragment has a ListView in a SlidingDrawer (=invisible before swiping) with an ArrayAdapter . Adapter is set on onCreateView() , that slows down swiping, because 30 list items have to load each time I swipe, because new fragments are being created. My Question is, whether it is possible to set the adapter after swiping when it ViewPager is idle? Or is there a better way? The List needs to be already loaded when the SlidingDrawer is expanded. 回答1:

问题 I have a few questions about the Adapter pattern. I understand that the class adapter inherits from the adaptee while the object adapter has the adaptee as an object rather than inheriting from it. When would you use a class adapter over an object adapter and vice versa? Also, what are the trade-offs of using the class adapter and the trade-offs of the object adapter? 回答1: I can see one advantage for the object adapter, depending on your programming language: if the latter does not support

问题 I am trying to get data from a db column that contains an URL link; The column name is 'goto' w/in the db. I need to pass this into my onItemClick Intent in my ListView to load a webpage into the new/next Activity. I don't know how to get this to function. If you can please show code modifications with an explanation, this would be very helpful to me learning. Thnx! REVISED: I am now getting data passed but my method is returning the wrong row ID. I revised the below Activity. Any help Plz.

问题 I want to do adapter template. There is error in AutoToTravelAdapter Move(); method How can I override and inherit Transport method? I try to use virtual but it does not works. I change to public override void Move() in both adapters and that works! Thanks, Zohar Peled ! using System; namespace Adapter { class Program { static void Main(string[] args) { Traveller traveller = new Traveller(); Transport camelTransport = new CamelToTravelAdapter(); Transport autoTransport = new

问题 I want to do adapter template. There is error in AutoToTravelAdapter Move(); method How can I override and inherit Transport method? I try to use virtual but it does not works. I change to public override void Move() in both adapters and that works! Thanks, Zohar Peled ! using System; namespace Adapter { class Program { static void Main(string[] args) { Traveller traveller = new Traveller(); Transport camelTransport = new CamelToTravelAdapter(); Transport autoTransport = new

问题 I am trying to modify the logged in user identity, var mydata="this is custom data array"; var user = JSON.parse(JSON.stringify(WL.Server.getActiveUser())); WL.Logger.debug("Before Update" + user.attributes); WL.Logger.debug(" displayName =" + user.displayName ); WL.Logger.debug("isUserAuthenticated ="+ user.isUserAuthenticated ); WL.Logger.debug("userId =" + user.userId ); WL.Server.setActiveUser ("myAppRealm" ,{ userId: user.userId , displayName: user.displayName, isUserAuthenticated: user

问题 I have an application with tabs. In one tab I need to put data (strings) in rows. To do so I chose tableLayout but when I wanted to use a contextmenu on its rows it doesn't work. I can show the contextmenu onLongClick but the problem is that I can't get the info about the selected row to edit or delete the selected row. Then I read in a discussion that using listView is better than tablelayout if we have many rows. But the examples I saw extend listactivity but I don't want to do this. So

问题 Is it possible to Get the GridLayout items from the Adapter in Android. Like, The items in the GridView come from the ListAdapter associated with this view. Please clarify my doubt.. Thanks 回答1: Gridlayout doesn't have any Adapters as its not derived from AbsListView . Only GridView comes with Adapters. 回答2: Yes, it is possible. You don;t say what you are using to create the GridView. Following is an example of getting the data from a cursor when you click on a cell of the grid (and putting