Android :: Add Images In ListView?
Sep 2, 2010I am new to android. i want to add images in a ListView like below shown links.
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Android :: Which Is Better Loading Of Images For ListView?
Jan 19, 2010I am wondering if which of the two is better in loading images in a listview from web, is it by batch through some number of threads that are running simultaneously or one by one through thread queue? I have noticed (but I don't know if that is really the implementation) from the youtube app that the images are loaded by batch and it is kinda fast. Even for not only loading images but also requesting some data from the web as well. Does anyone have an idea?
View 3 Replies View RelatedAndroid :: How To Display Images From Web In ListView?
Apr 14, 2010Android: How to display images from the web in a ListView? I have the following code to display image from a URL in an ImageView:
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import android.app.ListActivity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.widget.ImageView;
public class HttpImgDownload extends ListActivity {
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.main);
Bitmap bitmap = // DownloadImage(
// "http://www.streetcar.org/mim/cable/images/cable-01.jpg");
DownloadImage( "http://s.twimg.com/a/1258674567/images/default_profile_3_normal.png");
ImageView img = (ImageView) findViewById(R.id.img); img.setImageBitmap(bitmap);
} private InputStream OpenHttpConnection(String urlString) throws IOException
{ InputStream in = null; int response = -1;
URL url = new URL(urlString); URLConnection conn = url.openConnection();
if (!(conn instanceof HttpURLConnection)) throw new IOException("Not an HTTP connection");
try{ HttpURLConnection httpConn = (HttpURLConnection) conn;
httpConn.setAllowUserInteraction(false); httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("GET"); httpConn.connect();
response = httpConn.getResponseCode();
if (response == HttpURLConnection.HTTP_OK) { in = httpConn.getInputStream();
} } catch (Exception ex) { throw new IOException("Error connecting");
} return in; } private Bitmap DownloadImage(String URL) {
Bitmap bitmap = null; InputStream in = null;
try { in = OpenHttpConnection(URL);
bitmap = BitmapFactory.decodeStream(in);
in.close(); } catch (IOException e1) {
// TODO Auto-generated catch block e1.printStackTrace();
} return bitmap; } }
Now how can I display images in an array in a listview? Here's how I want to display the images:
http://sites.google.com/site/androideyecontact/_/rsrc/1238086823282/Home/android-eye-contact-lite/eye_contact-list_view_3.png?height=420&width=279
Android : Way To Create A Listview With Images
Sep 8, 2010I'd like to create a list with an image on the right side of each entry - and preferably have a separate callback if the image is clicked.
much like the contact call-listview - can click on either the name (edit) or the phone icon on the right (call).
just wondering what kind of list and/or adapter i have to use.
Android :: Adding Different Images To Rows In ListView
Jun 24, 2010i am quite new to android and i was wondering how i could go about adding a listview with different images and text. What i am trying to achieve is a listview with four rows which have a different Icon? I don't know how to set that up using the xml layout provided. should i build this using different multiple linear layout or is there a better way to go about it?.. All the examples i have seen all seem to be using one particular Icon and no much detail of the xml layout.
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Jul 22, 2010I try to implements lazy loading of images in a listview. There is no android features to make this, so I should implement it by myself. Have anyone already done this? Take the solution care of scrolling and lazy loading new images and stop to load not more necessary images?
View 3 Replies View RelatedAndroid :: Lazy Loading Images In A ListView
Dec 8, 2009I trying a hand at ListViews and my current experiment is aimed at displaying some data in a ListView. The data to be displayed in each row is simple: an image and some text. The images come from a remote server and the textual data is hardcoded. I have a class that downloads images using AsyncTask and caches the list of images fetched as SoftReferences in a LinkedHashMap. I am also passing a reference of the view to this class, so when the image download/cache read is complete the class will set appropriate Bitmap in the view.
Code...
Android :: Lazy Loading Images In ListView
Sep 22, 2010I implemented the lazy-loading images in my ListView. I use a AsyncTask to download the image from the internet and bind it to the ImageView in the UIThread. It's working except that when I scroll the ListView vary fast, the downloaded images sometimes are binded into the wrong items in the list.I guess the problem is from the reuse of convertView in the BaseAdapter. Code...
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Feb 13, 2010Here are 4 references that I have found for lazy-loading images into a listview in Android. The idea is to display a placeholder image, get the actual image in the background, update the ImageView in the list when the image is available. I've tried to do this in the simplest way possible using an AsyncTask in an Adapter. The outline of that approach is below. Is it flawed? Is there an agreed approach to handling this common task? Code...
View 2 Replies View RelatedAndroid :: Drawing Custom Images In ListView
Jun 23, 2009I would like to draw custom images within a ListView, for this I have created a ListView and an ArrayAdapter object. I have specified that each element of the ListView will be an ImageView which is specified by an XML layout file. Now, I would like to draw a custom graphic in each cell depending upon certain paramters.
View 3 Replies View RelatedAndroid :: Scrolling Through ListView With Some Images Very Laggy
Sep 6, 2010I've got the below screen that contains some images (6 per visible page). Scrolling up and down seems quite laggy to me. It's like it's rendering the images again. Scrolling back up seems worse than scrolling down.
Anyone know how to increase performance in such an area to create a nice smooth scroll?
Update: The images and text is all retrieved from my SQLite database. The list is created using SimpleCursorAdapter.
CODE:.......................
Android :: Downloading Images In Background While Showing The Listview
Jul 30, 2010I have an array of all the URIs of the images which I am showing in a List. Now I want to run a thread in background which gets this images from web and store them on the SD card. So when I click a particular element in the list instead of fetching from web it should fetch from the SD card in the new activity.
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Feb 19, 2010I am using a custom adapter for my ListView as per the efficient adapter sample by Romain Guy. In the getView() method of my adapter I am assigning an ImageView a jpg image stored on SD using the following code...
View 2 Replies View RelatedAndroid :: Refreshing Lazy Loading Images Into A ListView
Sep 11, 2009This is a very common scenario: displaying images in a ListView which have to be downloaded from the internet.Right now I have a custom subclass of ArrayAdapter which I use for the ListView. In my getView() implementation of the ArrayAdapter, I spawn a separate thread to load an image. After the loading is done, it looks up the appropriate ImageView and sets the image with ImageView.setImageDrawable(). So the solution I used is kind of similar to this one: http://stackoverflow.com/questions/541966/android-how-do-i-do-a-lazy-load-of-images-in-listviewThe problem I'm having is that as soon as I make the call to setImageDrawable() on the ImageView, the ListView somehow refreshes all currently visible rows in the list! This results in kind of an infinite loop. Code...
View 2 Replies View RelatedAndroid :: All Items Images Messed Up When Refresh ListView
Mar 11, 2010I have listview with items that include both text and images. If I scroll the listview fast enough all items images are messed up: wrong images are displayed for wrong items. The same problem exists with expandable listview. I tried to implement holder class to cache imageview and image itself using setTag, getTag but nothing helps. The faster I scroll the more items are messed up. Text almost always displayed correctly.
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Nov 9, 2010I populate a ListView from the result of a Sqlite query; one of the fields is the image file name that i would like to show as image into a listview.
How can i do to show the image file?
I use
SimpleCursorAdapter(this, R.layout.list_name,cur,new String[] {"fields_list"}, new int[] { R.id.list...});
Android :: How To Display List Of Images In Listview From Database Using Droid
Aug 9, 2010In my case i would be retrieving values from sqlite database and have to display it in a list view...So how should i pass the images out from the database into the list view.. I am able to save and retrieve images individually and display it on the screen.But how do i pass a bitmap and display it in a list view.can you help me with some sample codes please...
View 1 Replies View RelatedAndroid :: Display Thumbnails Of Images (present At Different Locations In Sdcard) In A Listview?
Feb 15, 2010I have several images present in different folders in my sdcard. I would like to display a list of thumbnails. So what I have done is while rendering any row in the list I read the file in an input stream, get the byte array, decode it to obtain a bitmap and set it in an imageview.
So far so good. But when I scroll the list, the list scrolls in jerks. I believe this is because decoding a bitmap from byte array takes some time. What I would like to know is that, is there any optimization which I can do to improve the performance, or better still is there any better method to achieve what I want ?
Android :: Display Images On Demand Inside A Listview / Find Out List Item Is On Screen?
Oct 31, 2010I am building a android aplication which will be consuming a json file from the internet. This json file contains a list of news from a particular website. Each json object contains information such like title, summary, descripition and web links for the news thumbnail and the original image.
I will be displaying in a listview three information: the news thumbnail, the title and the summary. Here resides my problem. I dont want to load all thumbnails from the internet if they wont be displayed. What I am trying to say is that why download a thumbnail from the 30th news if the user wont scroll down the image. So, i will, initially only download the thumnails from those news that are being displayed in the screen and when the user scrolls down to see more news, as soon as the list item appers to the screen i want to download the image and then display.
Is there a way to achieve this? Is it possible to find out if the list item is on the screen? I have been searching all over the internet for a solution for this but i am running out of ideas.
Android :: Load Images In OpenGL Without Having Thin Outline Appear Around Images?
Nov 2, 2009I'm basically using the same method of loading bitmaps in OpenGL that the SpriteMethodTest example uses and have been unable to get rid of an annoying outline that appears around all of my images.
For example, If I were to load an image of a white circle on a white background, I would expect to see nothing. Instead, I would see my circle because its edge would be gray. In SpriteMethodTest, I replaced the background image with white and was able to see that the edges of the android images flying around also don't seem to be rendered correctly.
Does anyone know how to load images in OpenGL without having a thin outline appear around the images?
Android :: Adding Some Nine Patch Images Breaks All Of My Other Images
Apr 6, 2010I'm working to convert some background images to nine patch so they scale better on different phones.
The problem is that if I have the following resource structure: drawable-hdpi/background.png drawable-hdpi/button.png drawable-mdpi/background.png drawable-mdpi/button.png drawable-ldpi/background.png drawable-ldpi/button.png and then I drop a new drawable-hdpi/background.9.png file into the mix, it breaks button.png during the pre-compile. The error is "No resource found that matches the given name (at 'background' with value '@drawable/button').Simply removing that one nine patch file fixes the build. Should I be able to have some nine patch images and some normal ones, or to have nine patch only in hdpi but not mdpi or ldpi? This is Eclipse 3.5.1 with the latest ADT.
Motorola Droid X :: Does Google Images Let You Select Images?
Jul 18, 2010Just curious how many have this issue.If you are unsure select the link below and find out pls.
View 30 Replies View RelatedAndroid :: Tutorials On How To Create Jpeg Images Or Convert Images Into Jpeg?
Jun 23, 20101.myJpegFile = new File("images/jpegImage.jpg");
2.output = new BufferedOutputStream(new FileOutputStream(myJpegFile));
3.encoder = JPEGCodec.createJPEGEncoder(output);
4.encoder.encode(myJpegImage); Please could you give me the equivalent code for line no. 3 and 4 in Android?
Android :: Way To Change ListView Style Droid Without Building Custom Listview ?
Jun 26, 2010I would like to change text and back ground color of my Listview without building custom rows. Is this possible ?
View 1 Replies View RelatedAndroid :: How To Keep ListView Header From Scrolling With ListView Content?
Jun 24, 2009There must be a way to do this. How can you tell a ListView that has a header to not scroll it when the user scrolls the contents? I want it to stay in a "stuck" position so that the user can always see what column the content applies to.
View 9 Replies View RelatedAndroid :: How To Create ListView Within ListView?
Sep 9, 2010In my project i m parsing xml and i want to put it in xml list with in list.
View 24 Replies View RelatedRetrieve And Set ListView Items (cells) Height Depending On ListView Height
Apr 4, 2012I have some class LoginActivity.java. In the onCreate method I retrieve ListView:
ListView list = (ListView)findViewById(R.id.snListView); then:
list.setAdapter(adapter);
In addition there are login.xml layout - there are:
<ListView
android:id="@+id/snListView"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
and sn_row.xml:
[Code]...
At the moment I have cell's height 100dp, I need that cell's height will depend on device, I mean I have here 5 cells showing at login screen in ListView and I need that these 5 rows will fit the ListView (cell's height = ListView's height/5).
Android :: Images In App
Nov 15, 2010I see three folders drawable-hdpi,mdpi,ldpi. Do I need to duplicate my images in all of these folders?Or can I just place my images in one or the other and it does not matter?
View 2 Replies View RelatedAndroid :: Using SDk Provided Images
Jul 28, 2009There are images provided in android-sdk-windows-1.5_r2platforms android-1.5data esdrawable folder of SDK. Is there any way that we can use those directly in appliation. (without local copy)?
View 6 Replies View RelatedAndroid :: No App Icon Or Images?
Feb 14, 2009I don't see a place to upload an app icon or photos. Is there now way for users to see screens of your app before they buy it?
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