Most voted "android-adapter" questions
Adapter on Android is an object that bridges the gap between an Adapterview(e.g., Listview) and the data set it shows. Provides access to items and is responsible for creating a View for each of them.
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12
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answers235
viewsHow to avoid an Illegalstateexception: The content of the Adapter has changed but Listview Did not receive a notification?
I have a Activity that displays a ListView, to which a Adapter "backed by" a ArrayList global. If I add an element to that ArrayList, ideal is to do it in the main thread and immediately call…
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answers2958
viewsWhat are Loaders? How to implement a Loader to load from the database without content Provider and how to implement a custom Loader?
On the Internet, at least in my research, I found little material on Loader in Portuguese. That is why I record here this question, to have documented answers to the android programming community as…
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answers8134
viewsWhat is the right approach to get the click/position in Recyclerview?
What is the right approach to click on Recyclerview? 1 - Inside onBindViewHolder use position, even if within setOnClickListener methods, which turns the position variable into FINAL; 2 - Inside…
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answer1772
viewsWhat is Viewholder Pattern?
I’m implementing a RecyclerView on Android and I noticed that it is necessary to create a class called ViewHolder. This class seems to be a design standard called Viewholder Pattern, and my doubts…
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answer374
viewsHow to assign an Activity to open by clicking on the Actionbar Tab?
Context I have an application that contains a Activity calling for MapActivity (of which is a Map activity you inherit from the Googlemaps api), and another Activity which will serve as a search…
android android-fragment actionbar android-adapterasked 8 years, 11 months ago Paulo Roberto Rosa 8,979 -
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answers4442
viewsHow to delete a specific Listview item?
I would like to ask a question: I have one ListView, in which his Adapter is clarified in the same Activity and the content of Adapter (as strings) are in another class, in another package. How do I…
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6
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answer350
viewsCan you create an Expandablelistview with the Swipe effect?
I have a ListView which is composed of 3 ListView's chained. The first is a list of Year of release, which has a list of genres that in turn stores a list of movies. I wanted to have the option to…
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6
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answers1240
viewsWhat is the purpose of the Recyclerview.Adapter class when using Recyclerview?
To use the Recylerview Android we need to create a class CustomAdapter extending from the abstract class RecyclerView.Adapter then implement three methods that are: onCreateViewHolder…
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answer271
viewsEdittext issues in a listview
I’m trying to get my listview retain the values placed on EditText, but every time I give one scroll I lose the data or it multiplies to other fields. Can anyone help? Follow below mine adapter:…
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4
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answer552
viewsHow to use a custom Adapter on android Listfragment
Hello folks I’m having problems with using a Adapter customized and display this Adapter in a Listfragment. My Custom Adapter public class UsuariosAdapter extends BaseAdapter { Context ctx; List…
java android listview android-fragment android-adapterasked 8 years, 11 months ago ThiagoDeveloper 55 -
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answers1444
viewsList of questions, each question with a list of answers
I’m implementing a question and answer app. For my listing I am using a Recyclerview in which I load several Cardviews (coming from loading a list). Each Cardview shows a question. Below the text of…
android android-layout android-adapter android-recyclerviewasked 8 years, 7 months ago SpammingOff 387 -
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answers120
viewsCreate a Generic Adapter
Good evening! Dear friends, I have a question , has anyone ever come across the situation of having several lists but with similar information? a simple listing of information coming from the…
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answer250
viewsFirst element in listview does not appear
I have a listview that lists through an Adapter. The list is updated after a Sqlite search. The problem is that it only appears from the second element of my table.... someone could help me?…
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3
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answers71
viewsEvent triggering multiple times when using Recyclerview
I’m having a problem working with RecyclerView. Man Adapter has the following code: public class CustomAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private…
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answer659
viewsSave status of a Checkbox
I need to save the status of my Checkbox, they’re inside a Spinner, and every time I open Spinner he cleans the Checkbox. Admlistagem.java final String[] select_qualification = { "Todos", "1", "2",…
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answer1074
viewsBackground Color of Listview in zebra
I have a layout with two Edittext and an Imageview that will be added to Listview via Basedapter. I wanted to change the background color of Listview in zebra. The problem is that if Listview has…
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answer853
viewsPopular a Listview with Arrayadapter
I need a popular ListView. I have a class that represents the Entity Cliete, a class that is responsible for the database database and finally a class ClienteDAO, that the data of the entity remains…
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answer890
viewsChange the Listview Background color when the key value is found
In my app I have a ListView which is provided through BaseAdapter. Then in the BaseAdapter i have an IF statement to change the list background when the value of a variable was equal to the value of…
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answer335
viewsDoubt about the operation of Basedapter and Listview
My code is as follows: in the method getView of my BaseAdapter, i add all created views to a list (I need this to do a certain thing). In that same Basedapter, I have a method getQuantViews that…
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answer54
viewsRemove child from an Expandedlistview
Hello, I would like to know how to remove a subitem from an Expandedlistview, in other words remove the Adapter item, where the Adapter receives a Map<Categoria, List<SubCategoria>> and…
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answer341
viewsCustom Spinner showing Resource and non-text
I’m having trouble setting up a custom spinner in my application. Follow below picture of how it appears: Follows my code: Java adapter. public class ProfissionalCategoriaAdapter extends…
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answer365
viewslistview with text image and subtitle
I’m building a sales app where a user will publish their product with: image, price, description and value. I can list the photo all right but I can’t put a title and the other descriptions Here’s…
java android listview android-fragment android-adapterasked 7 years, 5 months ago Felipe Moreira 25 -
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answers611
viewsHow to delete a particular data from a listview?
The app has two Uttons that when clicked add an item to a listview (bow and sword), but I would like if the item of each button was already present in the listview, the same would be deleted.…
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answer94
viewsHow to get the Listview reference of a Listfragment?
I’m with a ListFragment trying to access the ListView in which the Adapter inserted the objects, but the findViewById is returning null, anyone has any idea? The XML Fragment code: <?xml…
java android listview android-fragment android-adapterasked 7 years, 1 month ago Danilo Nadolny Vizentainer 23 -
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answers53
viewsDoubt Listview
I have the following code below where I am with doubt as I do to display the list on the screen, I have tried several ways and I have done several examples of the internet I could not get a correct…
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answer112
viewsUpdate fragment with Listview
I intend to "refresh" a fragment (fragment30.java) that displays the records of an Sqlite table after the deletion of one of these records . The records shall be submitted using a Listview…
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answer102
viewsMessage from "Empty Child" on an Expandable Listview on Android
I want to create a statement to the user stating that a Group of an Expansible Listview does not contain any Child (That the group is empty) as in the image below. Searching the net, I noticed some…
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1
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answer4475
viewsEdit item within Listview
Hello. I am working on a code that loads items inside the Listview through a Adapter. Within each item (item_list.xml), I inserted two buttons being one to delete the item and another to edit. The…
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1
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answer140
viewsHow to use an array within getView on an Adapter?
Here’s my problem, I’m passing a sequence of arrays to an Adapter that should be placed inside a listview, among these I have a two-dimensional array called materials : public View…
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answers213
viewsGroup recyclerview items by the.time item similar to facebook messenger
I’m trying to create behavior similar to what happens in Facebook Messenger, when sending several consecutive messages, for this I created several background drawables with border radius to be…
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answers303
viewsWhen I roll my listview I miss checkboxes marked
This is a code from my Adapter, in it I have a textview and 4 chekboxes. The problem is that I believe I have to save the status of my checkboxes, not to lose the data from it, because when I roll…
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answer63
viewsHow to return the focus on an Edittext after a notifyDataSetChanged() in recyclerview?
The problem is with notifyDataSetChanged() when I update recyclerview Edittext loses focus wanted it not to lose focus, already tried with requestfocos does not give.
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answer74
viewsRecover the amount of children who have a knot
How do I recover the amount of children you have in a knot? I already have the right path, I just need to know how to count the children of this knot. private DatabaseReference qtdeFilRef;…
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answers187
viewsAndroid - How to create a comparison so that items from LISTVIEW are displayed or not according to the date?
I’m creating an app that will show open pharmacies on a certain date: I created a listview with 10 lines (pharmacies)... And according to the day of the month certain units will be displayed... or…
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answer808
viewsMark/Deselect Radiobutton Component in Expandedlistview
In a question I asked here at Stackoverflow a few days ago I was instructed to use the Expendedlistview component to represent a dynamic list of items. After the implementation I saw that the list…
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answer287
viewsHow to give a list of images the behavior of a Radiogroup?
I have 2 image vectors, one for the normal image and another for when it is selected. When selecting an image on ListView I need the others not to be selected. I’ve tried many ways and this was my…
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1
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answers721
viewsHow to add the values of an Edittext that is on a list via an Adapter?
I have an application with a dynamic size list, which works together with an Adapter that contains 3 Edittexts, in which I name valor1, value2 and ream respectively. The functionality is very simple…
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answer213
viewsMy app that has Listview with Arrayadapter is closing when creating the list
I’m looking to make a product listing, where each line contains more than one information per line. The problem is that the app throws exception (I believe) and closes when I click the button that…
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1
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answer53
viewsError trying to fetch Sqlite ID via Spinner
Object Book public class Livros { private int id; private String nome; public Livros() {} public Livros (int id, String nome) { this.id = id; this.nome = nome; } public int getId () { return id; }…
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answer209
viewsHow to create a custom filter in the android lestview that searches for words after the space character
In this code the filter is working until the first word. From the moment I enter the space character the filter stops working. Example: Search "Steve Jobs", the system gets lost. Now if you search…
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1
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answer328
viewsUpdate data in Listview with Arrayadapter
I have a Listview that will be filled with some different data, which may or may not be called (simultaneously or not). Example: The user can add and remove ingredients from a product. However, he…
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1
votes2
answers604
viewsRecyclerview, problem inserting an item
Talk guys, I’m new on android, I have a problem here, I’m trying to insert items in a Recyclerview, when I use the direct method on the button it is inserting statically good: public void…
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1
votes1
answer75
viewsGridview - Items repeating randomly
I’m having a problem in grid view. This grid contains n products that are displayed on the screen, thus the grid of some users have scroll. When there is no scroll the products are normally…
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answer406
viewsjava.lang.Indexoutofboundsexception: Invalid index 4, size is 4
I’m not sure what’s going on, when I long click on a list item, it sometimes works normally (open a screen where it shows the user the registered information, allowing them to change it), sometimes…
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answer453
viewsHow to call a method in Fragment via listview Adapter
I have a fragment that has a listview inside it and inside lisview has a button. The button has to delete the listview item I have already made a method within onactivitycreated, but gives error…
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answer126
viewsNullpointerexception when running Listview.setAdapter (Android)
i am implementing an application where I need to display a list of Dogs (already registered in BD) and allow clicking on an item in the list to display a new activy to edit the data. The problem is…
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answer128
viewsMy BD search placed in a listview (Arrayadapter) returns the object address and not the content
I made an APP that saves the date and a series of numbers (8 numbers) in the Android database. I created an object ( with date and numbers), but when I search all objects inside the database and put…
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answer82
viewsHow to call an Interstitial by clicking on a list item that passes through an Adapter?
I need to call a Interstitial in this Activity by clicking on a list item that comes from my Adapter: public class ListOfTemplates extends AppCompatActivity { private Template template; private…
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1
votes2
answers385
viewsChange background image of a Recycler View Adapter after click
The thing is, I created a Adapter amending a RecyclerView in an Activity I call through this function (within Activity): private void gerarDatasView(CalendarJur calendario){ LinearLayoutManager…
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1
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answers27
viewsHow to display an Imageview only while the user is "holding" the screen?
I’m making an application and in one of the fragments I have a Recyclerview being used to list some view holders with some textviews and an image view. I implemented a simple Adapter to display a…