android-arrayadapter

问题 I have an AutocompleteTextView working with an ArrayAdapter. The adapter is updated from a webservice, when the text changes. This updated is done in an AsyncTask, what is supposed to be a good practice. This is working more or less, because the suggestions after every key pressed are based on the strings retrieved in the previous key pressed. There is a couple of problems related is this page, but none of the answers works for me. Anyway, I had a solution, but is inefficient and I don't know

问题 I have list with section, but this ListView is very slow. I need any holder, but i don't know how I can make it. When I had one type of view it was simple, but here I have problem. I create holder, but when ListView is showing, I see: "titel","title","title","item","item" "titel","title","title","item" "titel","title","title","item","item","item" This is my code: public class EntryAdapter extends ArrayAdapter<Item> { private ArrayList<Item> items; private LayoutInflater vi; Context context;

问题 The aim of the application is to offer a simple way to download and extract a bunch of archives (~200mo), to delete it, and to open it. The download display a notification which display the progress. I'm using a ListView to display every archive that can be downloaded. Each array contain an image, some text, and two buttons (for reading/deleting, downloading, or cancel). The data are retrieved from a json. I've got some issues while I try to cancel the AsyncTask which display the notification

问题 I have a ListView that is populated by a news server rundown (just a list of story slugs) and an arrayAdapter to modify that ListView. I can remove items by the 'remove(Object)' function but what if there are multiple instances of 'Object'? remove() only removed the first instance of 'Object'. I cannot remove, for example, the second 'Object' in my array adapter without removing the first one. So my question is how can i work around this? ex : Rundown A story 1 story 2 Break story 3 story 4

问题 I am trying to make a list view that contains pictures and text within another activity. I am not so focused in android programming, so basically like a newbie in android programming and i have difficulties in debugging my app. please help me :) Error : Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference at com.fingervoiz.app.tamla.Activity.ListDataIdntActivity.onCreate

问题 I will give you a short review about what i'm trying to do: I want to fill the DropDown of a AutoCompleteTextView with my own Objects. those objects contain 3 Strings. In the list_item_view should be 2 of the strings. This List should be filterable. Now a bit of code, what i've done till now: My CustomAdapter looks like this: public class CustomerAdapter : ArrayAdapter<CustomerSingle>, IFilterable { private ws_test.Test ws=null; public static List<CustomerSingle> _contactList; private

问题 I'm currently using the following code to pass all items in some columns to Arrayadapter . private void TestListAll(){ //Displays the whole list. cursor = db.rawQuery("SELECT _id, firstName, lastName, title FROM employee WHERE firstName || ' ' || lastName LIKE ?", new String[]{"%" + "" + "%"}); adapter = new SimpleCursorAdapter( this, R.layout.emp_list_item, cursor, new String[] {"firstName", "lastName", "title"}, new int[] {R.id.firstName, R.id.lastName, R.id.title}); setListAdapter(adapter)

问题 I have a ListView widget (positioned below other UI elements) that is part of an Activity that does not extend ListActivity . I am trying to write a basic feature that adds extra items to the ListView upon clicking a Button . This data is obtained from an EditText . I define the Adapter , an ArrayAdapter in my case, for the ListView in onCreate() and set the adapter for the ListView using setListAdapter() . However when I try to add an extra item to the ListView two items are added in the

问题 I have this code on my activity: ParseQuery<ParseUser> query = ParseUser.getQuery(); query.findInBackground(new FindCallback<ParseUser>() { public void done(List<ParseUser> userList, ParseException e) { if (e == null) { Log.d("score", "Retrieved " + userList.size() + " scores"); friends = new ArrayList<String>(); for (int i = 0; i < userList.size(); i++) { friends.add(userList.get(i).getUsername().toString()); } aAdapter = new ArrayAdapter<String>(context, android.R.layout.simple_dropdown

问题 I am creating a News API based Android application which loads the news of a particular channel say ABC News into MainFragment using a RecyclerView. I am making an API Call for that in MainFragment as follows: MainFragment.java public class MainFragment extends Fragment { protected RecyclerView recyclerView; protected NewsAdapter adapter; protected String API_KEY; String sourceTitle, sourceID; List<Articles> articleList; public MainFragment() { } @Nullable @Override public View onCreateView