FAQ Database Discussion Community


Retrieve XML feed,parse it and put it on a listview

android,xml,listview,listadapter
I've been coding this script to retrieve XML feed and display it on a webview (with success tutorial url here : http://developer.android.com/training/basics/network-ops/xml.html), however, i am trying to put the entries of the feed on a listview. public class ListFeed extends ListActivity { public static final String WIFI = "Wi-Fi"; public...

TextView in my getView() inside a adapter class throws null pointer exception

android,listview,textview,listadapter
I'm trying to create a android application, in which I try to setText() for a textview dynamically. But it throws null pointer exception @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder1 holder1; // LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); Log.i("&&&&& convert view is null", "&&&&& convert view is...

Custom adapterView calls getView function multiple times and updating list view which causes slow speed of application

java,android,android-listview,android-asynctask,listadapter
I have an custom adpter which is having public View getView(int position, View convertView, ViewGroup parent) method. @Override public View getView(int position, View convertView, ViewGroup parent) { ObjA obj = mArr.get(position); LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); View view; if (convertView == null) { view = new View(mContext); view = inflater.inflate(R.layout.grid_view,...

Custom List Adaper not displaying correct background

android,listadapter
I have a an android app that populates the screen with rows and based on if they have been clicked the background should either be red or green. If you click on the rows the background will change to the opposite color. The issue I have been having is if...

Is there any method to get count of new added items to list adapter in android?

android,listadapter
Hie...every one.I want to show badge in my activity(containing list view )and the badge should contain the count of new list items added to that list view.Whenever i resume the activity the badge should refresh with updated count..does any have solution? Is there any methood from adapter to get new...

How to get Images from Internet and past it in a ListView?

android,json,android-listview,android-arrayadapter,listadapter
I'm doing my BlogApp. It gets all data from the Internet. I added three TextViews, but I have problem with getting images from JSON. I've tryed different ways but I still don't understand how exactly do this. Here is a part of my code: private void handleBlogResponse() { mProgressBar.setVisibility(View.INVISIBLE); if...

Views return NullPointerException in onBindViewHolder in RecyclerView Adapter

java,android,listadapter,recyclerview
I want to build custom adapter for RecyclerView but when I set Text or set value for any view it's return NullPointerException. I don't why. Tried many solution but all of them didn't work. My adapter: public class HistoryViewAdapter extends RecyclerView.Adapter<HistoryViewHolder> { private ArrayList<ApplicationDataManager> arrayOfHistoryManagerClass; public HistoryViewAdapter(ArrayList<ApplicationDataManager> HistoryClassArray) { this.arrayOfHistoryManagerClass...

How to get items from Listadapter in android?

android,android-listview,listadapter
I have a Listadapter wherein there are 4 different strings, and storing them to my listview. Now I want to get all the items from one of those strings and parse it to "date", so how can I able to populate my calendar dates from my listadapter? Following the codes:...

new Intent with ListAdapter

java,android,android-intent,listadapter
I have a ListView loading project data from an XML-File for (int i = 0; i < nlProject.getLength(); i++) { // Neue HashMap erstellen HashMap<String, String> map = new HashMap<String, String>(); Element e = (Element) nlProject.item(i); // Jedes Kind-Knoten zur HashMap map.put(KEY_UUID, parser.getValue(e, KEY_UUID)); map.put(KEY_NAME, parser.getValue(e, KEY_NAME)); map.put(KEY_JOBTITLE, parser.getValue(e, KEY_JOBTITLE));...

Android : FragmentList items repeating themselves

android,listview,android-fragments,listadapter
I have created a ViewPager in my MainActivity that contains 5 tabs. In the first tab I have put a ListView in order to display some items. The problem is that whenever I swipe to a different tab and then return to the first, the items in the list are...

Image adapter leaking memory

android,recyclerview,listadapter,picasso,okhttp
I have a simple ListActivity that shows images and I inizialize my OkHttpClient for Picasso Builder in the constructor of the ImageAdapter class: picassoClient = new OkHttpClient(); picassoClient.interceptors().add(new Interceptor() { @Override public Response intercept(Chain chain) throws IOException { Request newRequest = chain .request() .newBuilder() .addHeader("Cookie","xyz") .build(); return chain.proceed(newRequest); } });...

Large data from SQLite on ListView

android,sqlite,android-listview,listadapter,android-cursor
If CursorAdapter is deprecated, what's the recommended way to manage large data in a ListView? After API level 11 there's LoaderManager. But apparently you need to use it together with CursorAdapter? Is there a newer way?...

Android Fragment: setting Adapter for list gives null

android,android-fragments,nullpointerexception,fragment,listadapter
I have some problems with DialogFragment; when I'm trying to set Adapter, I've got nullPointerException. When I tried this in normal Activity, everything works clear. Here is code: import java.util.LinkedList; import android.app.AlertDialog; import android.app.Dialog; import android.app.DialogFragment; import android.content.Context; import android.os.Bundle; import android.view.LayoutInflater; import android.widget.ListView; public class DayList extends DialogFragment {...

Searchable List View

android,android-listview,listadapter
So i'm trying to make a searchable list view using a custom array adapter. I finally got the search working but the results are not exactly accurate. Its actually a hit and miss kinda thing e.g Searching for Drupal gets me Google Plus, you knw what I saying? So here's...

Highlight searched text in custom adapter listview

android,listview,android-listview,listadapter
I have a listview and want to search text from it. I have done it successfully but now I want to search the item and highlight the searched text in the listview. This is my filter function in the ListViewAdapter: public void filter(String charText) { charText = charText.toLowerCase(Locale.getDefault()); worldpopulationlist.clear(); if...

Use OnclickListener In custom Adapter Class

android,android-intent,listadapter
I have to use onclick listener in custom adapter class of listview. But every time it crashes the application when I try to click on it. Here is the adapter class::- public class ClassAdapter extends BaseAdapter{ ArrayList<Class_Beans> feedList; LayoutInflater inflater; Activity activity; Context context; ImageLoader imageloader; public ClassAdapter(ArrayList<Class_Beans> feedList, Activity...

Optimized way to use getView method in Adapter [duplicate]

android,android-listview,android-arrayadapter,listadapter
This question already has an answer here: findViewById vs View Holder Pattern in ListView adapter 3 answers I understand, calling every time view.findViewById(R.id.title); is much costly operation. How can i optimize this by storing these int values. What is the optimized way to use in List Adapter? @Override public...

Xamarin Android - deleting item from ListView deletes TWO items

android,listview,android-listview,xamarin,listadapter
I have a project that uses a ListView to list some offers. The ListView is populates with the adapter below. I've recently added a delete button to the ListView items, which should obviously delete the item from the list. All is good. However, after i delete my first item successfully,...

Unable to find TextView when populating ListView with ArrayAdapter

java,android,android-arrayadapter,listadapter
I'm getting a nullpointer exception at the following line, as if the TextView I'm referring to cannot be found: descriptor.setText("Single"); I checked the ID field and it is exactly the same in the code and in the XML, I'm not sure if I have an error somewhere else in the...

Adapter in a ListView in Android Studio

android,listview,android-studio,listadapter
I'm trying to complement a code that controls a custom ListView through three classes: AdapterListView,ItemListView and MainActivity. So far, the code only manages to enter data and images (inserted by code) through AdapterListView. Within that class, want to know how use other features such as add or remove items by...

Adding a check box (only one can be checked at a time) to my custom list view

java,android,checkbox,android-listview,listadapter
I have made my custom adapter and am adapting an array of "persons". In my list item xml i have put a checkbox, but this is where i get confused. I want my list to only be able to have one check box checked at a time. And i also...

ListAdapter Values are not displayed

android,listview,listadapter,getview
I need to dispaly my values in list view and i need to perform a click for particular textview alone in the list view I have tried like this ListAdapter adapter = new SimpleAdapter( ViewAppoinmentScreen.this, medicationlist, R.layout.appoinmentlist, new String[] { "clinic_name", "id", "app_type", "app_date", "app_time", "app_desc" }, new int[] {...