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Questions tagged [android-viewholder]

A ViewHolder object stores each of the component views inside the tag field of the Layout, so you can immediately access them without the need to look them up repeatedly. The ViewHolder pattern is often used in Android applications to improve performances of view access.

A ViewHolder object stores each of the component views inside the tag field of the Layout, so you can immediately access them without the need to look them up repeatedly. The ViewHolder pattern is often used in Android applications to improve performances of view access.

For an example, check the official Android documentation on the ViewHolder pattern.

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Listview and disappearing Spanish words

I have a listview in my app with custom rows layout. And the problem is some words randomly appearing/disappearing on scrolling. This words contains letters from spanish, e.g. á or ü and more. For example: on activity created I can see in listview…
tonyAndr
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Loading items to a extendable list view using adapter

Im trying to transfer data between 2 activities and then display using a adapter. Earlier I have used same adapter to display List, but this gives couple of errors in my adapter and i have showed them in my code below. Can anyone figure what should…
John David
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Listview slow scrolling

I'm using ListView and each item of it contains some controls. And when I scroll down this Listview it is pretty slow. I know that ViewHolder pattern is used to resolve this problem and i implemented this pattern. But it sdoesn't solve my problem.…
Junior222
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Android, view Holder does not update listview correctly

I'm reading data into my listview from a database and i can see the information in the listview, the data in each row is split into left and right. When i scroll in the listview the items are not uppdating correctly. Some items in the right side off…
user2407226
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ListView with viewholder and checkbox state save

Simple shopping list app. ListView (TextView + CheckBox with custom adapter. Tried to implement viewHolder pattern and completely lost. Am i right? Check my code. And also how to save checkbox state? I created massive, but dunno how to implement…
Xmstr
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ListView View Holder returning duplicate rows multiple times

Here is my code, View Holder Class : private class ViewHolder { TextView tv1; TextView tv2; TextView tv3; TextView tv4; TextView tv5; TextView tv6; TextView tv7; …
user39996
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Android ListView rows are repeating if i don't re-query the needed info from the database

It's my first time working with listviews so excuse me in advance for any beginner errors. My code for the custom getView is as follows: public View getView(int position, View convertView, ViewGroup parent) { final ViewHolder mHolder; if…
Venzo92
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Repeating values in custom ListView

I'm using custom list view by using BaseAdapter every thing was working fine then I had to use the Viewholder for optimizing the listView. Now every time I scroll my list view it shows up from 5 to 6 records every time. This is the code I am…
Osama Aftab
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How to set the image name in gridview and use the image name in the database android

I'm having a hard time to figure out on what am I going to do with my code please help. I already got the answer on how will the user set a name for the image in gridview the problem is, it constantly changes every time I click it and input new…
Janella
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ImageView is small after rotation of device

After rotation of device -> Image (id=list_image2) remains small like it was at portrate mode Seems it is because I change count of Columns gridView.setNumColumns(3);, but viewholder still contains previous imageview with previous width and height,…
NickUnuchek
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BaseAdapter: ViewHolder/Recycle + SwipeListView = trouble

Using BaseAdapter without recycling (inflating views everytime getView(...) is called) my animation and functionality to swipe inside my list item works fine (it also has images thats loading from web). @Override public View getView( final int…
Jonas Borggren
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Android - Managing ViewHolders for ListViews

I have a ViewHolder for a custom BaseAdapter to populate a ListView, whose data source is an ArrayList>. My use case involves re-ordering, appending and deleting elements in the ListView. I store the list view elements in the…
user1841702
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Expandable List View Hide Item while using ViewHolder

I am writing an application where I need to hide elements of Expandable List View. This is what I am doing to achieve it. public View getGroupView(int groupPosition, boolean isLastChild, View view, ViewGroup parent) { …
CoDe
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Why Do I Have To Check mPosition in my AsyncTask onPostExecute?

I am using an AsyncTask to lazy load images in my ListView. This all works correctly, but I do not understand why I have to check my mHolder.hPosition vs the mPosition in the onPostExecute method. If I don't check these values, I'll get old images…
Chris
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ViewHolder broke ImageView

I was using a custom adapter for a ListView. Basically it enters three things two textviews and an RelativeLayout. The RelativeLayout is used to display a block of colour. Previously I was using the same code below but without the ViewHolder stuff…
Flatlyn
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