I 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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I am working on an application that downloads images from a url. The problem is that only some images are being correctly downloaded and others are not. First off, here is the problem code:
public Bitmap downloadImage(String url) {
HttpClient client = new DefaultHttpClient();
HttpResponse response = null;
try {.......................................
So what I have is a method that takes the url as a string argument and then downloads the image, converts the HttpResponse stream to a bitmap by means of the BitmapFactory.decodeStream method, and returns it. The problem is that when I am on a slow network connection (almost always 3G rather than Wi-Fi) some images are converted to null--not all of them, only some of them. Using a Wi-Fi connection works perfectly; all the images are downloaded and converted properly. Does anyone know why this is happening? Or better, how can I fix this? How would I even go about testing to determine the problem?
I want to add images to gallery view after downloading them (like in android market application). All examples of gallery uses images stored in drawable folder. So how can I add images to gallery when image gets downloaded??
View 3 Replies View RelatedDoes anyone know if there is any software available (if it even exists that is) that would allow me to download photos etc of people/things that I search for on the web ie:Google Images?
I mean say I want to search Google images for my favorite Artist Ryan Adams and I find a Great photo that has been uploaded is there anyway that I could download that photo so I could use it as wallpaper etc?
I'm making an alternative camera App. As you might expect my App involves taking pictures and saving them to the sdcard. On most phones (and the Emulator) everything works fine, pictures appear in the built-in Gallery App straight away. However on the HTC incredible images only appear when the user restarts the device. (I'm talking about an HTC Incredible phone with an sdcard, I know some of them shipped with internal storage only, but this is not the issue I'm talking about) The code I'm currently trying goes like this: I've also tried MediaScannerConnection.scanFIle() with no luck. I wonder is the problem is due to the HTC incredible being originally designed to operate with internal storage only, maybe the Gallery App has issues with media stored on the sdcard. You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscribe@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
View 4 Replies View RelatedLuckily I have the "NetCounter" network traffic counter installed, so I monitor my data usage over the 3g/2g network. Recently I've discovered my usage have increased massively. According to the month graph I've jumped from average 8 MB/day to approx 40 MB/day and my habbits haven't changed!This morning when I woke up, and my phone has been idle all night, it had already used 7MB since midnight - without me using it. What kind of a background app/service downloads that much data? According to my netcounter it is almost 99% download and 1% upload.I have a 1gb/month dataplan which should be enough, but something is appearently abusing my Connection , and with 410MB used this month so far, it can't last all month this way.I can see which date more or less the cell usage have increased, but I honestly can't recall which programs I have installed around that point! So before I try randomly uninstalling programs, I would like to hear if there is any way I can see how the network usage is distributed between the apps, so I can find the sinners?
View 8 Replies View RelatedWhen I download a file from web in android, then I want to show a progress bar in notification area of status bar through service, but I am not able to do this. How can i do it? I am not able to pass the file length in service. I am giving URL in EditText, and I am clicking Download Button. After Click A class will be called on Click Listener, this class is having a function. In that function I am doing processing or functionality of downloading, Now I want to show the progress bar in Notification Area Through service, but I can not able to do this.
View 2 Replies View RelatedWhen I get picture texts, it comes up with a play button in the message thread. Clicking it will 'play' the image for 10 seconds, and I found out I can tap the screen and hit pause to look at the pic longer... but I can't figure out how to save the image. I've tried:
holding finger on the play button in-thread
holding finger on the image
hitting the menu button on either page
with no success.
I am new to android. i want to add images in a ListView like below shown links.
View 3 Replies View RelatedI wasn't able to find my question in the forums so here goes:
Every time I go to download my photos from my phone (both SD card and internal), I end up downloading thumbnails and images from websites I've visited as well as people's avatars from foursquare. I end up having to delete hundreds of images every time I want to download my pix.
Any idea how to disable the downloading of the web stuff? (Can the phone differentiate web image from photos I've taken from the camera?) I've tried from both the phone side and the computer side and I can't figure it out. Also, is there any way to get my phone to stop storing these web images? I don't think I need them, do I? (I'm a newbie smartphone owner if you couldn't tell!)
I 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 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
I'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.
Since 2.2 I have been unable to download anything and only get an error message after it takes you to the download screen. This is happening on the stock browser as well as skyfire. Am I missing something? This worked fine in 2.1.
View 5 Replies View RelatedIs there a way to manipulate the positions of *background* images in an ImageButton?
View 2 Replies View Relatedi 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.
View 1 Replies View RelatedI 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 RelatedI 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...
I 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...
View 2 Replies View RelatedHere 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 RelatedI 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 RelatedI'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:.......................
I use gmail and images are not showing in the email, only the links. How can I change that?
View 1 Replies View RelatedI 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 RelatedThis 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 RelatedI 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.
View 5 Replies View RelatedI 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...});
I have never had any gallery problems that i can remember, but all of a sudden my images/folders arent showing in the gallery. I use a file explorer, and it shows that all my files are there, but for some reason nothing will show in the gallery. sometimes i can gt it to show a "camera" folder and like 3 "download" folders, and some weird folders with numbers and stuff, but they never show thumbnails and wont let you click them.
Gone are my picture folders, and also the galleries from picasa web. I have the droid, with the latest updates and everything. Never had this problem before. Was working the other day. Today i was tryin to send someone a picture, and noticed this.
I am on Virtuous 2.6 ROM and noticed a curious thing going on with my contact images. I have used Handcent since day one with my Incredible and about a week ago the contact images stopped showing for my most often used texting contacts. I have found that new contacts that text me, or some that havent texted much have images showing, but my family (most used) don't. I have tried everything I can think of. I don't think it is the ROM, I have uninstalled Handcent, deleted cache, reinstalled, deleted all conversations, and even tried Chomp....same results.
View 5 Replies View RelatedI have a standard ListView. It's not displaying the scrollbar track thumb though. Is there some special setting you need to set in order to show the scrollbars? My definition looks like this:
CODE:............
The listview has data, and it has enough items to scroll.