android-arrayadapter

问题 I have a ListView which is getting populated from service response. When service is called i am showing a progressbar by adding footerview by inflating progressbar view and hiding it once listview is populated. Note : I am adding footerview before setting adapter. Then i am adding footerview at each service call. problem : when service returns non empty response everything is working fine(footerview is shown and hided after listview is populated) when service response is empty i.e. listview

问题 I've read all the posts about this issue but I still can't get my ListView to update. I am extending ListActivity. Here's my ArrayAdapter: public List<String> songs = new ArrayList<String>(); public ArrayAdapter<String> allsongs; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); allsongs = new ArrayAdapter<String>(this, R.layout.song_items, songs); BindAllSongs(); ListView listView=getListView(); registerForContextMenu(listView); } now, when I

问题 The following App flow shows what I expected ("Alfa" in the autocomplete list): Open App -> click on button -> tap on autocomplete field -> type "al" But this one fails (and if I type "br", "Bravo" is still in the list): Open App -> tap on autocomplete field -> type anything and then delete it -> click on button -> tap on autocomplete field -> type "al" Why the list is not updated in the second sequence? public class DisplayFragment extends Fragment { AutoCompleteTextView autoCTVShop; Button

问题 I was wondering how to update views/UI (say, making a TextView invisible) within a single row of a ListView when clicking on the row because every other rows' views would be affected as well. A good example would be playing a song in Google Play Music, and the equalizer animation would be displayed accordingly. Here are my snippets: MainActivity's onCreate(): @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity

问题 Here is my ArrayAdapter Class, public class HAAR extends ArrayAdapter<HAM> { Context context; ArrayList<HAM> selectedhospital; ViewHolder viewHolder = null; public HAAR(Context context, int resourceId, ArrayList<HAM> selectedhospital) { super(context, resourceId, selectedhospital); this.context = context; this.selectedhospital = new ArrayList<HAM>(); this.selectedhospital.addAll(selectedhospital); } // View lookup cache private static class ViewHolder { TextView name; TextView home; CheckBox

问题 I'm trying to add an item to arraylist/adapter on a Button click in my class MyMaxes.java: Date currentDate = new Date(); ArrayAdapter<Record> records = new ArrayAdapter<Record>(getApplicationContext(), R.layout.custom_record); records.add(new Record(currentDate ,maxSquat, maxBench, maxDead, maxTotal)); records.notifyDataSetChanged(); And in my other class, MyProgress.java, I'm trying to assign that adapter to the ListView: ListView listViewRec = (ListView) findViewById(R.id.listViewRecord);

问题 I'm developing an Android application with a ListView . Every item in this ListView will have a checkbox . I'm trying to uncheck every item when user clicks on one of them. E.g. a ListView with two items, 0, 1 . At this moment 0 is selected and user taps on item 1. I want to deselect item 0. This is my code. It's inside an ArrayAdapter . @Override public View getView(final int position, View convertView, ViewGroup parent) { View row = convertView; if (row == null) { LayoutInflater inflater =

问题 I wanted to create a list view and populate it with string array so I trid it with ArrayAdapter. This is my code. public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); String str[]={"A","S","S","P","S","S","P","Bl","Ra","M","a","a","c","s","s","ds"}; ArrayAdapter<String> ad=new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,str); ListView lv=

问题 I have chat app In custom array adapter. I set random colors to usernames for each message with this code: String[] array = context.getResources().getStringArray(R.array.username_colors); randomColor = array[new Random().nextInt(array.length)]; nameTextView.setTextColor(Color.parseColor(randomColor)); When new message arrive I add it to listview, and call adapter.notifyDataSetChanged(); This causes recoloring existing usernames in messages each time. How can I prevent recoloring existing

问题 This question already exists : Spinner will not populate and won't set arrayadapter Closed 5 years ago . My app redirects me to a different screen from my home with the tap of a button. Once, i reach my city screen my spinner is visible. But it doesn't contain any elements from my array. Nothing force closes or anything, but it doesn't work. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_city); if