Android :: Strange ListView Loading / Default Values Displayed
Jun 24, 2009
I have a listview that is populated by a couple threads that pull in data from the network. Before that data comes in, there are some default values displayed. When the screen loads, there are 6 items displayed, each with the default data. The 1st (index 0) loads and is updated on the screen, and then number 6 (index 5) is updated with that same info. Then, item 2 (index 1) loads, and then item 5 (index 4) mirrors that data. Then item 3 loads, then item 4 reloads with the correct data, then then item 5 with the correct data, then item 6. Why are items 5 and 6 briefly showing the data from other elements in the list? I can't figure out what in the world could be causing this.
View 7 Replies
Apr 22, 2010
I am trying to laod the listview dynamically. There are three textviews inside a listview. The text to be set in the textview is fetched from the server. All this is working fine. I am able to fetch the text and am able to display it inside the listview.
The only problem is the position of the textview. The xml layout file is as under:
CODE:.............
If I look at this xml layout in the eclipse layout tab then it is displayed properly. Problem occurs only when the text is fetched dynamically.
View 2 Replies
View Related
Apr 22, 2010
CODE:...................
This is the layout that I am inflating in the Adapter. Everything is displayed, but only the second textview which should be displayed at the bottom is getting displayed at the top. Can someone let me know the problem with this?
I I view this in the layout tab in Eclipse then it displays properly. The problem occurs only when the text is fetched dynamically.
View 1 Replies
View Related
Apr 9, 2014
I want to ask where does the defaults values of memory min-free values of a Rom reside? I mean what file I would have to edit to edit those values?
View 1 Replies
View Related
Nov 24, 2010
I have created a table named train_table in SQLite database with 3 columns. they are train_id, train_no and train_name. Now, i wrote a class in which i displayed the train_name in a list view. how do i get the related train_no in the next page? can anyone help me in sorting this problem.?
View 2 Replies
View Related
Feb 19, 2010
I am move from one intent to another intent, the another intent collects the data from our own data base so, it takes so much time for appearing. In that idle time I want to display a animation like progress dialogue etc. Code for please wait the values are loading statement is appearing when we move from one intent to another intent
View 1 Replies
View Related
Nov 1, 2010
I think I have a pretty easy problem to solve, but I have been beating my head against the wall for hours trying to get past it! I have an adapter that loads a list of URLS:
adapter=new MyAdapter(this, lStrings);
list.setAdapter(adapter);
The list of URLS looks like this:
private String[] lStrings={
"http://www.domain.com/file1.jpg",
"http://www.domain.com/file2.jpg",
"http://www.domain.com/file3.jpg",
};
What I want instead is to load these values from a text file that lies on the SD card. For that matter, I would be okay with loading the values from a text file into a String, and then load the String into the list as I imagine that would be the "cleaner approach". However, all attempts to do this have failed. For instance, I replaced the above snippet with this:
private String[] lStrings=
{ MainActivity.this.getString(R.string.myurllist) };
but then I get a Forced Close on loading.
I'm a bit new to Java, Android, and development in general.
View 1 Replies
View Related
Aug 16, 2010
I have a ListView in my app that has a background image. All of the rows are a semi transparent white (#35FFFFFF). Whenever I scroll the list, the rows turn a light green that obscures the background image until I stop scrolling (usually--sort of unpredictable). Sometimes it flickers between the background image/color and the green. And yes, I have set the cache color hint to #00000000. Any advice about this would be appreciated.
ListView xml:
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="7px"
android:cacheColorHint="#00000000"..............
View 2 Replies
View Related
Nov 12, 2010
I have a list view with array adapter to show user some information that retrieved from Internet, As we all know reading data from Internet requires some time to finish, but if I try to read data on getView(), it means user must wait and he/she cannot see anything at that time, the screen is black for long a time because it will cost too much time to finish. This is unacceptable.
So I think maybe I can show user a empty list view first and then display a progress dialog to let user know I'm now just reading data. The background task will read data and send message to UI thread when job is done. But there's one problem: I don't know how to get notified when list view is displayed. I mean, I want to know when & where to show that progress dialog when I first show user an empty list?
View 2 Replies
View Related
Jul 30, 2009
I'd like to use CursorAdapter but Cursor its based on cannot be returned by simple sql query, since in db i have two fields and based on some criteria they build the String that would be displayed in the ListView.
what is the best solution: forget CursorAdapter and use ArrayAdapter or MatrixAdapter iterating over my db Cursor and adding rows, or maybe use CursorWrapper or some ither solution?
View 3 Replies
View Related
Aug 28, 2010
I have list of items ion my activity which I load dynamically, item after item. Initially I load "lightweight" version and when processing is done I want to update the item with new information. Like set some text or replace an image. That means I need to update what ListView item is displaying after Adapter#getView already returns. Of course I don't know if user is actively scrolling and this item is still visible or has been scrolled out ot view. The only thing I can think of is to extend View so it performs some operations on it's own thread and updates itself when done,but will it work?
View 1 Replies
View Related
Nov 29, 2009
I am having some problems with the default messaging app. Everything was fine until I downloaded Handcent. After playing around with Handcent, I decided to remove it. After I did, when I tried to send a picture with the default client, it would appear to send properly, but the person I was sending too would get a notification that the attached media was 'too large' or something similar, and not be able to view the picture Finally, I reinstalled Handcent and could send pictures from it just fine. I noticed that Handcent asks to resize pictures when sending where the default app does not. I could not find any settings for 'resize' in the default app. I figured I just had a bug with the default client, and continued to use Handcent with no problems. I would periodically check the default client, with the same results.Finally, after several days of using nothing BUT Handcent, I decided to give the default app another try, and now I find that it is working again with no problems, and in fact, the pictures I send with it that are apparently NOT resized look better on the phones I send them to than the ones I send with Handcent. Has anyone else had a problem like this, or know what could be going on?
View 3 Replies
View Related
Oct 14, 2010
When i click home button and then come back to to my application it doesn't show the last values on the listview or any other view it just look same with when i started the application.I believe it is can be done with onResume and onPause but i couldn't find how.
View 3 Replies
View Related
Jul 27, 2010
How can I add/delete/modify values in "default.properties" for Android.
View 3 Replies
View Related
Jul 7, 2009
Prefs are defined in preferences.xml, arrays.xml, and strings.xml. Default values are defined in strings.xml.
For example:
CODE:................
View 3 Replies
View Related
Oct 27, 2010
I'm starting to make my own android roms and i was wondering if it was possible to change the default android settings you get when you flash a rom. For example, when you first boot, animations are already turned on and orientation is turned off (unchecked) by default.
I've got an .apk manager so i've had a feeble attempt at going through .xml files in the decompiled Settings.apk. "res/xml/ sound_and_ display_ settings. xml" had the most potential but i couldn't see any "enable/disable" options.
View 9 Replies
View Related
Jan 12, 2010
I have the following code to intantiate a SimpleCursorAdapter to use with a ListView. As you can see I have passed the R.layout.log_item to display the list items, and one value/control to bind to (TripDate).
SimpleCursorAdapter sca = new SimpleCursorAdapter(this, R.layout.log_item,c,new String[] {DBAdapter.KEY_LOG_TRIPDATE},new int[]{R.id.txtTripDate});
This works. I currently only have one widget in the layout xml, a TextView to hold the TripDate.
How do I pass multiple binding parameters for the additional widgets in the layout? So I can also display other info.
View 1 Replies
View Related
Oct 2, 2012
I want to retrieve data from the existing sqllite and query it and show the values in listview. my sqllite db has four columns naming emp id, emp name, salary, designation. i want to show the list of employees in a listview and on list item click query from db and by sending that particular emp id and show the name, salary and designation in the textviews in another screen.
View 2 Replies
View Related
Sep 28, 2010
I want to dynamically load a ListView, for example, load them during the scrolling so its not loading all 100 posts I have. How can I achieve this?
I have looked at similiar solutions here at SO, but since I not got it to work, I asked this question.
My code:.............
I have in the same .java file, functions to download the info from the web and loop through 100 items, like this:
CODE:................
And then it add a new order correctly and so on. But now!(?) I want to have so when the first item is loaded, it should appear and when scrolling it loads gradually.
View 1 Replies
View Related
Jan 19, 2010
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 Related
Jul 22, 2010
I 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 Related
Dec 8, 2009
I 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...
View 11 Replies
View Related
Sep 22, 2010
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 Related
Nov 1, 2010
In my Android App I have a listview containing 30 rows, and each row consists of several textviews of which one is spannable and sometimes contains a lot of formatted text and images. Those images are loaded from the web asynchroneously: A placeholder is displayed until the image has been downloaded is then replaced by the image. Unfortunately, the rows of the listview are loaded when I scroll over them. This makes the whole thing very slow. Also, those images are loaded from the web again and again, whenever I scroll over the row. can I turn it off, that the ListView rows are loaded when I scroll over them? They should be loaded once when I start the activity and never again.
View 3 Replies
View Related
Feb 13, 2010
Here 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 Related
Dec 7, 2009
In the android market app, the ListView shows a 'ProgressView' during the loading of the content of the ListView, and then when the loading is done, it shows the content of the ListView.
View 3 Replies
View Related
Feb 19, 2010
I 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 Related
Sep 11, 2009
This 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 Related
Jul 26, 2010
There are some others applications doing this, like Twitter, Facebook, or even native applications such as Android Market. When you want to display a list of items retrieved from the internet, this looks like a standard way for displaying the user some notification about action in progress. This is a white background screen with an animated spinning wheel and a "Loading..." text. Does somebody know how to do this?. I've been able to do something similar with this code, but i don't like it too much yet.
Still work in progress:
CODE:...............
View 2 Replies
View Related
Mar 4, 2010
Does anybody have an example of lazy loading (about 10,000 items) an Android ListView from a Sqlite databse?
View 1 Replies
View Related
