Android :: Load Only What Displayed In List - Grid - Gallery?
Nov 16, 2010
I would like to improve the load of my activities in my Android app. Every activity is either a GridView, a List or a Gallery. My questions is : How can I load only what's displayed ? Let's say I have to display a list of 500 songs (The same with a grid of 500 pictures), and each cell includes the Thumbnail, title and lenght. How can I know which one is currently displayed? I don't know if I made myself clear, if not please jut let me know.
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Nov 24, 2010
we are wroking on the displaying of mails from an email . we got the list of emails stored . we need to show a small text screen which consists of the some content of the body when the email in the list gets focus .
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Aug 5, 2010
Using Google Maps on Android does anyone have any ideas on how to load only markers that would be displayed on the current screen? I'm thinking about sending a request to a web service that returns the lat/lng for the relevant markers. But what would the parameters be that I could use to calculate if a given lat/lng is within the screen?
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Jun 19, 2010
I have a simple grid with rows of items and columns of options on each item. Of course I can manually link OnClick actions to cell items through specific resource IDs:
CODE:.............
What I'd prefer to to is use a ListView or a GridView and an Adapter. Is there a way to get cell id's from one of those? I was hoping that ListView setOnItemClickListener() would call me with the view id of a view within row 'position': onItemClick(AdapterView parent, View view, int position, long id) { ... }
But no go. Maybe a different approach?
Update:
I started with this:
CODE:.............
I'd assumed that I couldn't go into my Adapter and set child view OnClickListeners. Bad assumption. When I went back at this I gave it a try:
CODE:.................
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Sep 7, 2010
In an application I need to limit the length of drop down list displayed by AutoCompleteTextView in android to let the below buttons be visible.Can anyone help me in limiting the length of drop down list programmatically.
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Mar 2, 2010
What is more expensive to load in a Gallery, a Bitmap or Drawable???
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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.?
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Aug 3, 2010
If you have missing contacts in your contact list (even if all contacts is selected) but when you search for them they come up, here is the worlds easiest fix. Log into your google mail on your computers browser, click "contacts". In the left hand column the 1st row says "my contacts", note the total.Now 2nd to the bottom there it says "all contacts". If that total is more, click on it. At the top of the list of names click "all", In the column to the right there is a box that says "add to my contacts", Dont worry it will not duplicate contacts. Click on "add to my contacts" Now after this my phone started syncing contacts automatically, if yours does not, force the sync in the settings, accounts, google. as soon as its done, your missing contacts are now displayed.
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Aug 4, 2010
I am trying to simply load just the contact photo of all my contacts and display them in a gallery.widget. Do I create a query? I was trying simply just to do People.loadcontactphoto but was getting errors....Any easy way to do this?
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Jul 24, 2010
I am a beginner Android developer and I need to know how to Save and Load images (Bitmaps) from the Android Gallery, But I dont even know where to start! Can someone help me to know where to get started, or even look?
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Jan 13, 2010
I currently have my work Groupwise e-mail forwarded (using a rule in Groupwise) to my Gmail. Only problem is that many folks at work use group distribution lists to send out e-mails. Many of these lists have hundreds of recipients. When I open these e-mails on my phone I often have pages of recipients to scroll through before I ever get to the message.
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Sep 15, 2010
Got the OTA like everyone else and everything works great. The ONLY thing I have realized is that my photo Gallery (the stock one) is running SOOO slow. I used to be able to flick through the photos without ever coming upon a grey square (with no pic). Now, after a strong flick, I get nothing but grey squares. They eventually load into pictures, but it takes about 3 - 4 seconds before they load. Any ideas? Could it be there are too many pics in the phone / card or is this as a result of the update?
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Jun 22, 2010
Is there any way to force the Gallery app to load new photos? Half the time I take new pictures with the camera, I cannot view them in the Gallery for sometimes a day or two..even after a reboot.
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Sep 30, 2010
I have this code:`public class MaxsapListAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private Bitmap mIcon1;
private Bitmap mIcon2;
private Bitmap mIconCall;
private String[] DATA;
MaxsapListAdapter(Context context, String[] DATA) {
// Cache the LayoutInflate to avoid asking for a new one each time.
mInflater = LayoutInflater.from(context);....................................
which loads some arbitrary data array on a list and sets some example icons too,I would like to be able to use users contacts on my list next to users name e.g. the list will be as many rows as contacts user has on his phone and in every contact that there is a photo load that photo next to contacts name else load a blank image, is this possible? and how?
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Aug 13, 2010
Let's say, there are four apps in the system: app1, app2, app3, app4.
Be default, when the system is up, all apps will be shown in the home screen. Now if we provide a customized log in screen, user A log in, then for this user, he can only see (and use ) app1 and app2. Then A log out, user B log in, he can only see app3 and app4.
Does API provide such capability to load the app list dynamically?
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Oct 2, 2009
How to load data in expandable List Adapter through Scroll .
Means I want to add data as per Scrolling in Run time.
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May 9, 2010
I am trying to modify this example:
http://developer.android.com/resources/tutorials/views/hello-gridview.html
But instead of displaying images that are resources, I want to display Drawables that I currently am storing in a List.
Can anyone instruct me on how I would modify
code...
To display my drawable items instead?
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Jan 9, 2012
I want to create a new app that's a plugin for the camera or gallery but I'm unsure how to get my app into the list of of apps in the gallery.
After you take picture, if you review it, there is a list of apps that you can do stuff with the picture like Facebook, email, PicSay, etc. This list of apps can also be accessed in the gallery by clicking on the icon that looks like binary tree on its side with three nodes (a dot on the left with two lines coming out heading right at angles up and down connecting to two more dots).
how to get the app I'm writing to show up in this list.
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Apr 13, 2010
I am new on android and building an application which uses webservice to collect user information in XML. I also get path for a small jpeg picture of each user. (Currently there are about 200 users) I am parsing the XML and storing the information in SQLiteDatabase. Pictures are stored as blob and able to retrieve them.
I display names of users on listview with images as well. But is this a good solution for storing pictures in SQLite Database ? or should consider storing it in file system ? Which is suitable in terms of performance , as well as memory and any other pro and cons on Android.
Also like to know which is best performing XML parser for Android ?
My purpose is only to parse xml files which I get through web services and sort out the data to store in storage. And lastly my memory goes off easily when I load all images to display in list view after making thumbnails of each (which is obvious).
Was wondering is there any library/framework/app available which dynamically loads images as and when required (when that list item is on display) something like Gallery program ?
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Feb 25, 2010
I have been looking all over the forums for a list of premade themes compatible with fresh 1.1 that i can load through the pre-kitchen? all i can find is backgrounds and also i am lookin for custom lock screens but i cant find those either( would this be something i would make myself using metamorph?)
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Nov 28, 2010
so when I go to my GALLERY on my Epic and select and image to SHARE, it shows a list of all my apps I can send it to, but since I have a lot I can't select my MESSAGES!? I want to send friends some images on mms!And when I turn it to landscape mode, the list is even shorter! It won't allow me to scroll through my apps to send the image.
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Nov 1, 2009
Our application displays widgets that update every minute through Alarm. It works fine under 1.5 and 1.6 but since 2.0, widget is not displayed at all. Only initial layout is displayed.
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Oct 22, 2010
I have been assigned the task to use an android tablet to run a single app in an enterprise setting. Ideally, when one switches on the tablet this app should be loaded perhaps during startup and the user need not step out of this app. The app logic itself is rather easy but I am wondering if it is at all possible to load a single app during load and not allowing the user to step out of it.
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Sep 4, 2010
Is it possible to load a layout XML at runtime and load into activity?
In my app, I have various types of data like Person, Company, City, etc; The requirement is to dynamically load the layout, find views by tags (property names like Person.name, Person.address) and then fill in data. For example, if user has selected an object of type Company, we want to load a company.xml layout, inflate it and then associate various properties (company name, company slogan, city, address, revenue) to tagged views. One possibility I see here is - each view in the layout will be associated with property-name as tag and then appropriate data will be loaded in appropriate views.
What should be the best design you would recommend?
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Feb 6, 2009
I'm trying to set the selection of a Gallery in code. I would like to have the Gallery smoothly roll down a few items over the duration of a second or two. At frist glance, it appears that two members would to the trick:Gallery.setAnimationDuration(int animationDurationMillis); Gallery.setSelection(int position, boolean animate); It turns out that the setAnimationDuration only seems to affect the rubber-bandy "return-to-center" effect of the Gallery. In other words, when a gallery comes to rest after a fling, and a gallery item is off center, the animationDurationMillis is used to control the duration of the Gallery centering up the item. However, the value seems to have no effect on the setSelection. No matter what value is set with setAnimationDuration, the Gallery seems to render about 2 or 3 frames when flying between items 1 and 10 for example. Is this working as designed? Does anyone know a trick or workaround that would let me properly animate setSelection? I'd be especially grateful if we could do it with an "Ease Out" effect.
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Aug 31, 2010
I want a 3*3 grid with an ImageButton centered in each cell
I've done the code ...
With this code, rows have the good height, but not width, and ImageButtons are not centered in cells...
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Mar 2, 2009
I want to remove or hide an app from the main grid. Is it possible?
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Jun 19, 2010
I have a GridView that displays thumbnails of images, I want to change the thumbnail size (zoom in/out) during runtime, what is the best way to achieve this? I changed the columnWidth of gridView during runtime but after that I scroll the gridview and I get memoryoutoferror exception.
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Jan 14, 2010
I have a problem and i will be grateful if anyoune helps me.
Ok. I've started android programming 2 month ago. Now i am developing a simple game, nava battle. For this programm i need to build a grid, where i can place ships and coordinates. I can't seem to find out how I should be doing this?
I think i should build a custom view, which will do all that i need. If anyone could show some examle or explain how to build appropriate view i'll be happy
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May 5, 2010
I've doubled checked my API key is right and that is right I doubled checked that it was correct. Here is my source and XML could anyone check to see what is wrong. Also I make sure I have Internet. code...
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