Android :: Access Rows In List Activity

Jan 21, 2009

I want to include one button inside each row in a List Activity. When pressing one of these buttons it will be disabled and will perform a heavy task in the background (in a different thread to avoid screen blocking). After the action is completed the button will be enabled again and the row updated with some results obtained from that "heavy operation". Im filling my List with a custom SimpleCursorAdapter, its getView method calls super.getView and in the view (row) returned I access its button through findViewById and set my click listener (to disable it, and launch the heavy task in the background). Once this heavy task is finished I need a reference to this row view to find the button and re- enable it. SimpleCursorAdapter´s super.getView() reuses row views shown on screen to avoid creating many different rows instances, so when my "heavy task" is finished the row view reference i need to reenable its button may have been reused in a different row, so in the end I am modifying a button in a different row! I have tried different solutions, for example giving different ID to each row view (useless because it gets overwritten when the row view is reused) Obviously creating a different row instance for each row whether its shown on screen or not isnt the best solution.

Android :: Access rows in List Activity


Android :: Speed Of SQLite Vs List Contains For "in-set" Icon On List Rows

May 9, 2010

An application I'm developing requires that the app main a local list of things, let's say books, in a local "library." Users can access their local library of books and search for books using a remote web service. The app will be aware of other users of the app through this web service, and users can browse other users' lists of books in their library. Each book is identified by a unique bookId (represented as an int). When viewing books returned through a search result or when viewing another user's book library, the individual list row cells need to visually represent if the book is in the user's local library or not. A user can have at most 5,000 books in the library, stored in SQLite on the device (and synchronized with the remote web service). My question is, to determine if the book shown in the list row is in the user's library, would it be better to directly ask SQLite (via SELECT COUNT(*)...) or to maintain, in-memory, a List or int[] array of some sort containing the unique bookIds.

So, on each row display do I query SQLite or check if the List or int[] array contains the unique bookId? Because the user can have at most 5,000 books, each bookId occupies 4 bytes so at most this would use ~ 20kB. In thinking about this, and in typing this out, it seems obvious to me that it would be far better for performance if I maintained a list or int[] array of in-library bookIds vs. querying SQLite (the only caveat to maintaining an int[] array is that if books are added or removed I'll need to grow or shrink the array by hand, so with this option I'll most likely use an ArrayList or Vector, though I'm not sure of the additional memory overhead of using Integer objects as opposed to primitives).

View 2 Replies View Related

Android :: How To Tell Inbox Activity Focus His Rows?

Nov 3, 2009

I know the title it doesn't explain my problem exactily. It's better explain it with an example. I want put up-down arrows over inbox activity. I can select each row in the inbox message list pressing up or down arrow. I'd tried it showing two activities at time starting a new thread, but I can't get it. However, if I could put my arrows another problem appears: how can I tell inbox activity focus his rows? Then, I thought maybe I resolve my problem installing NDK, but I have a lot of problems installing it. Finally, you could think, another solution could be manage myself inbox message list; but this is not an scalable solution for me.

View 4 Replies View Related

Android :: Way To Present List To User Where Each Item On List Starts An Activity When Selected

Nov 4, 2010

I am on my first Android application and I am on a timeline so details and examples will be useful since my knowledge is still minimal. I want my first screen to present the user with a list of activities to choose from. In my situation it is a recipe app where the user first chooses the type of food, such as, Beef, Chicken, or Pork. I want the application to launch an activity depending on the list item that the user clicked on. I am not sure if I should use a list view, a text view, a scroll view, a list activity, an activity group...

View 1 Replies View Related

Android :: Orientation Change Crash In Tab Activity With List Activity

Jan 21, 2010

When views with different type have same id and screen orientation changes,

either java.lang.ClassCastException: android.view.AbsSavedState$1 or java.lang.IllegalArgumentException: Wrong state class -- expecting View State will occur. (depends on the view's order)

Because View.dispatchRestoreInstanceState() checks id only.

You may wonder why anyone would make views with different type to have same id.

But it can happen when you use tab activity.

Imagine you have tab activity with two children activity.

Tab1 is ListActivity and Tab2 is ExpandableListActivity.

Both activity have id of "@android:id/list" but the type of view is different.

This means we cannot use ListActivity & ExpandableListActivit at the same in one tab activity.

View 4 Replies View Related

Android :: Can Update A List View In One Activity While Im In Another Activity

Oct 4, 2010

I currently have a tab layout with 2 tabs, one tab with a list view and one with the option make strings so I can add them in the list view. Both tabs have their own activity because this made the code much more structured, and I dont have to repeat my self later.

Lets say im in the tab that offer me to create an string, and i press the update list button, how do I update the list view without startActivity()? If i use startActivity(), it starts List.java, and instead of displaying the list in the list view tab, it takes full screen, which defies the purpose of the tab view. In other words, the startActivity() steals the focus from the tab view of the list, and sends it fulscreen.

I want to update the activity in my list view tab, without starting a new activity that goes to fullscreen, and doesnt update the one in the tab.

View 2 Replies View Related

Android :: Design Clarification In Android List Activity Vs Activity

Mar 25, 2010

I have a simple question. I am trying to design a simple Android app, which based on keywords searches something and shows a listing view of results. Currently it merely searches SMSes in the cellphone.Here are some of the things I am faced with: I have a simple first page with a textbox and a submit button. It's rendered by "Activity" inherited class call SMS Finder.once I have the results present with me, I want them to be binded to a list view. Showing preview text to limited characters, say 20 chars. Clicking on the same should "ideally" open the inbox (or outbox or whatever) and open the SMS, however that meant I cannot come back to my app easily. So I would rather open the whole SMS in my own app. So clicking on the app should open the SMS in a new screen with complete message, sender info etc. Few questions here, For generic Android phone apps, what are the best practices to make UI as compliant to as many phones? Like what kind of views should I use?

View 1 Replies View Related

Android :: How To Access Phone Call List?

Nov 9, 2010

I want to access the Android call list, so I can see the contact name, the hour of the calling, the duration, the hour of the calling and the date. Where is it, and how can I access it?

View 2 Replies View Related

Android :: Access All Ringtones List In Phone?

Jan 23, 2010

I am new to android development and i want to access the ringtones list. How can i access ring tones list? At later i want to add/ remove ring tones to library? Is it possible?

View 2 Replies View Related

Android :: Can't Access AlertDialog List Items

Dec 6, 2009

How can I access items I previously set using AlertDialog.Builder?

private static final CharSequence[] skill_levels = { "Rookie", "Average", "Expert" };
skillLevelBuilder = new AlertDialog.Builder( this ); skillLevelBuilder.setTitle( "Change Skill Level" ); skillOnClick = new DialogInterface.OnClickListener() { [...] }

View 3 Replies View Related

Android : Way To List - Access All Files In Directory?

May 7, 2009

Can any one tell me which is the best way to access the file system in android device, also i want to list all the files in the application directory.

View 3 Replies View Related

Android :: Access To String 'Icon List' Given IconListActivity.class?

Sep 22, 2009

Code...

How do I access to the string 'Icon List' given IconListActivity.class?

View 1 Replies View Related

Android :: Maps In List In Map Activity

Oct 4, 2010

Map activity allows one map in a activity, i have a scenario and hard time implementing it, i have a list of records and for each record i show google map now this is not becoming possible in lmap activity with list having earch row a seperate map?

View 1 Replies View Related

Android :: Preloading List Activity ?

Nov 20, 2010

I have a realtively complicated listview in my application, with data fetched from the internet and so on. What is the best practice to do to preload as much as possible of the ListView, such that it appears immediately on the screen?

For example, the standard SMS/MMS app of android shows a white screen with a spinning loader and "Loading..." before a conversation is shown. I can't really find this in the Android source code, but I guess this is an extra loading Activity doing some caching and handing over to the conversation Activity using finish(), so that no screen change animation is shown.

How can I preload or cache ListView items? Is it even possible to do that?

View 1 Replies View Related

Android :: List Activity In Application?

Sep 2, 2010

I have a list activity in my application. i have tried to make it so that when a list item is selected to show the selection the background of the view should change. but now when i select one item, the item does get selected but the back ground of random listitems changes at the same time, but the selection is still correct
CODE:...........................

View 1 Replies View Related

Android : How To Get Recent Activity List?

Jul 15, 2010

When I run my app, it works fine but if I switch back to home or another application, I want to go back to my app quickly by using the recent activity list (on my phone this is done by holding down the home button). For whatever reason, I never see my application in this list of apps. All other apps when they are running or have just recently been closed show up ( the menu shows 6 icons for the recent apps). Why doesn't my app show up on this list? Is this something you need to do programmatically?

View 4 Replies View Related

Android :: Access Several Xml Views In Activity?

Aug 6, 2009

i have created some xml layout: 1- toplayout.xml 2- botlayout.cml 3- middlelayout.xml now i can only set one view as in setContentView(R.layout.toplayout); please advise how can i show all three views in my activity?

View 2 Replies View Related

Android :: Access Activity Below In Stack

Sep 8, 2010

I have pushed one Activity to make few changes. Now I want to pass all the changes to the previous(below) Activity. I dont want to create Activity again;and intead i want to access the previous activity.

View 1 Replies View Related

Android :: Access One Activity From Another In Same Package?

Feb 25, 2009

I have 5 activities in my project. How can i check the condition of 2nd activity from 4th activity? Based upon this condition i want to do something. If anybody know this please tell me. Am waiting for the response.

View 2 Replies View Related

Android :: Access Drawables Outside An Activity

Jun 1, 2010

How do access a drawable which resides in my project's res/drawable folder from outside an activity? The component which handles the loading of images is generic and is not inside any activity. I would like to display an image from res/drawable in case it can't be fetched from the web.

View 2 Replies View Related

Android :: Access To Element On Another Activity?

Aug 5, 2010

I have a TabActivity with two tabs-activities — FirstActivity and SecondActivity.

How can I access to any element (for example, change TextView's text) on FirstActivity from SecondActivity?

View 1 Replies View Related

Android :: Not Getting Touch Event For List Activity

May 21, 2010

I have created ListActivity of images i want touch event just like onItemClickListner how can i do it? i'm not finding any on Item Toch Listener.

View 2 Replies View Related

Android :: How Do You Activate Checkmarks In List Activity

Feb 5, 2010

I have a ListActivity with an array adapter declared like arrayAdapter = new ArrayAdapter<String> (this, android.R.layout.simple_list_item_checked); This shows a bunch of rows with checkmarks on the far right. Can you tell me how to get a reference to those checkmarks or how to check/uncheck them?

View 2 Replies View Related

Android :: Pass List<GeoPoint> To Another Activity?

Nov 10, 2010

I have an ArrayList of type GeoPoint.

private List<GeoPoint> points = new ArrayList<GeoPoint>();

I want to pass points to another Activity and retrieve the data in that activity. How do I do it? I know I have to use the parcelable but I searched, but could not find a way to pass ArrayLists.

View 1 Replies View Related

Android :: Possible Mapview And List Exist In Same Activity?

Jul 24, 2009

For now i have a list, using extends listactivity, and now i want to add mapview on the same activity using framelayout probably,

but if i want to use the mapview, the activity must extends mapactivity,

one must extends mapactivity,the other must extends list activity,

if it possible to do that?

View 7 Replies View Related

Android :: ListView - How To Display A List In My Activity

May 5, 2010

I'm just starting with Android and can't find how to display a list in my activity. The activity and the layout main.xml are shown below. How can I display the country array in the ListView 'list' of my layout?

CODE:..............

main.xml


CODE:.........................

View 3 Replies View Related

Android :: How To Display Custom List Activity

Jan 20, 2010

I want to display data in list activity. How do I achieve this?

TITLE Date

Sub Title Button

TITLE Date

Sub Title Button

TITLE Date

Sub Title Button

.
.
.
.
and so on

Does a tutorial exist related to custom list activity?

View 1 Replies View Related

Android :: How To Add Buttons Dynamically In List Activity

Jan 20, 2010

I want to put description and buttons dynamically can any one guide how can i do that? i have data in the form of object list/array i.e ID,Title and want to display in list activity like..

TITLE [Details Button] [Edit Button] (repeating in list activity)

View 1 Replies View Related

Android : Get Scroll Position In A List Activity?

Mar 23, 2009

I'm trying to get the scroll position on a ListActivity. Here is what I'm trying to do: I have a list activity that is populated from an XML file. Another thread downloads all pictures so the user can see the list while the thread is still downloading the files.

What I'm trying to do is when the thread finishes getting all pics it reads the listview scroll position, refresh the listview and scroll to that position again.

ListView main = getListView(); <-- not sure if I'm really getting the ListView this way. int scY = main.getScrollY(); Log.d("Scroll", scY + " "); <--- this is printing zero even when at the moment I run this I already scrolled the list. setListAdapter(listadapter); main.scrollTo(0, scY);

View 10 Replies View Related

Android :: Access Large Layout In Activity?

May 13, 2010

I am having layout which I want to render on to different sizes of mobile (like WVGA854). Resource structure is like

reslayoutmain.xml
reslayout-largemain.xml

By default it is taking layout main.xml file itself of layout. Its not pointing to layout-largemain.xml. its throwing exception:Activity can not start resource not found. So can any one guide me how can I acheive this and how to support mutiple screens with different layouts like large,small and default along with images specified in respective dip folders.

View 1 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved