Android :: Switching Between Listviews Without Changing Layout?
Nov 8, 2010
I'm not looking for exact code here, just a direction on what to look for and what I should be reading about so I can figure this out. I have a layout that I would like to remain static, with only the listview changing depending on what's selected from the list. I've reloaded data in the list, but I would like the fancy transition animations between choices, and would like the app to go to the previous menu when pressing back.
Someone suggested using a viewswitcher, which seems like it'd be great, but I am still unsure about how to fill a listview in a layout with a regular row layout, then on selection do an animated transition to a custom row. Also, it seems the viewswitcher is limited to two views, so it may be a limitation when I want to go a few menus deeper. Preferably, I'd like to put each menu in it's own class so that I can handle filling it in that class, if possible...
View 1 Replies
Mar 31, 2010
I want to know how to change dynamically a ListView's item layout. To be exact, i want to know the method that the ListView's bindView method is called at runtime. if the bindView method is artificially called by a other method. then i will change a ListView's item layout.
View 1 Replies
View Related
Nov 7, 2010
I am not very familiar with android coding so try to help me on a easy way.
The problem:
I have 2 Listviews and a onClick event handler.
How can i find out on which listview the user currently clicked?
public void onListItemClick(ListView l, View v, int position, long id) {
'Approach: if listview1 is clicked then FUNCTION1() else FUNCTION2()'}
View 1 Replies
View Related
Jun 1, 2010
I am trying to create an app for android 1.5 which would be organized around 4-5 'screen's that will be changing in a given order.
So I start ma app with the first screen, which it's background and a button. When I click on the button a new screen appears with a different background and different options which lead to next screens. Sth. that is usually seen in games. The problem is that I need to pass a lot of data between those 'screens' like and array with recorded sound. My idea was to create a separate xml layout file for each screen and change the context in the activity class so ie:
CODE:............
A simple test app for 3 screens works this way but my I don't really like this approach and it seems to be inappropriate.
Is this the correct way of organizing such an app in android or should I take another approach - if I should, please give a more detailed advice on how to do this.
View 5 Replies
View Related
Sep 12, 2010
i've got this simple layout in a file derived from Activity
<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dip" > <ImageView android:id="@+id/photo" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </ScrollView>
i'd like to change the imageview contents dynamically. which method do i need to overload - again this class is derived from Activity.
View 2 Replies
View Related
Dec 7, 2009
Let's say that I have two layouts for a widget: Layout1 and Layout2. The default for the widget is Layout1, but I allow the user to choose which layout they want the widget to be. So if the user changes to Layout2, how do I programmatically change the layout to Layout2? There isn't a setContentView method for widgets like there is for Activities.
View 2 Replies
View Related
Apr 28, 2010
I have this really annoying problem:In my widget, i would like to change the background by code. I noticed on the Google doc than I can easily change the background of an Imageview: remoteViews.setImageViewResource (R.id.my_iv, R.drawable.my_bg);Ok, too easy, i want to change now the Linear layout.. What I read about the remoteview id that I can change a Bitmap, Int, Bool, String, etc. but not a drawable. So i guess i cannot use:remoteViews. set Bitmap (R.id.my_ll, "setBackgroundDrawable",BitmapFactory.decodeResource(context.get Resources(), R.drawablemy_bg));I am totally disapointed and tried a last idea: views.setInt (R.id. my_ ll,"setBackground Resource" ,R.drawable.my_bg);But The logcat told me: android. widget. Remote Views $Action Exception: view: android. widget.LinearLayout can't use method with RemoteViews:setBackgroundResource(int)I am totally lost and I really don't know what to do.
View 1 Replies
View Related
Jan 14, 2010
I am trying to modify the design of Spinner widget. I can change the background, but I can't find a way to change the arrow icon on the right side. Is there a way to do it?
View 3 Replies
View Related
Nov 21, 2010
I can write a widget with a Button or ImageButton and assign a StateDrawable as background or sourcein order to make an effect when you click it. Besides that I have problems with the side of each button, my main problem is this: how do I change the StateDrawable if I want to change the image of the button from the AppWidgetProvider but still want to preserve the click effect like a StateDrawable. The power control widget in Android does things like that.
View 2 Replies
View Related
Jun 8, 2009
I am having a bit of trouble with my current application. With a button at the beginning of my app, I send out Intents for two activities, one gets a camera object, and starts a preview screen. On top of that, in a separate layout, there is an activity with a translucent view, which shows a resource image (the user is trying to get the image he is actually taking to align with the translucent image) and a couple of textviews displaying a target phone orientation as well as the user's current phone orientation.
when I update the text value of one of my text views in my onSensorChanged() field, the system constantly reallocates 1.22MB and garbage collects it. I can only assume that this is because it is redrawing the entire layout with the translucent image and the text fields, because if I remove the view containing the translucent image from the layout, my text field updates 10x quicker and I don't have ridiculous heap growing / garbage collecting. I am wondering how to go about getting the text fields to update without redrawing the entire surface. I am very new to UI design, and this code was written by someone else before I took over the project, so I don't understand much of what is going on in the custom view he wrote to take care of the translucent image -- called MyView. I will post the code for the layout as well as the MyView code below.................................
View 4 Replies
View Related
Oct 28, 2010
I have in many of my screens that re mostly constructed of LinearLayouts a FrameLayout that should take up the bottom leftovers of the screen (using layout_height="0dp" layout_weight="1") inside it there's a FrameLayout with gradients background and in it's middle with some padding lies a button with some text, naturally i need the text and onClicked properties to me different from screen to screen. I considered using <include > tag for the above compound in my layouts, but as far as i can see i can't really change (at least not in xml) the button text and callback, is that really so?
View 2 Replies
View Related
Sep 1, 2010
I recently updated to the 2.1 ROM update. I was wondering if there is anyway to change icons and maybe learn how to to customize my layout.
View 4 Replies
View Related
Sep 7, 2010
I have a ListView, and within each list item I have some TextViews and a CheckBox. When I check a CheckBox and my onCheckedChangeListener fires, everything works as it should. However, random other checkboxes get checked once one is checked. Here is an example.
If I click on the first CheckBox:
8 is checked.
15 is checked.
21 is checked.
27 is checked.
33 is checked.
41 is checked.
Then if I scroll all the way up, none are checked until 6. The next being 13.
View 1 Replies
View Related
Apr 25, 2010
I'm trying to figure out how it's been designed. How it holds its items? How do I get a hold of the scrolling container? How can I know it's exact scrolling position? How can I scroll it to an exact position?
I want to have all the current benefits the ListView provides plus detailed scrolling control... How about animating from x to x+100 scroll position?
Maybe I need to create my own ListView? Where do I begin?
View 5 Replies
View Related
Nov 18, 2009
Firstly, I have found many examples of how to grab data from a db and place it into a list, however this seems to be all for ListActivites.
My list is part of the UI and therefore I can't use a ListActivity because it does not consume the whole screen (or can I?).
This is the UI:
CODE:........
So, from what ive read I need to grab the data from the db, then place it into some sort of array then use an array adapter to fill the list view. Is that correct? If so, is there some sample code because all I can find is code releated to ListActivites.
View 2 Replies
View Related
May 15, 2010
I am writing a software that i have to drill down on content a lot. For example when the program starts a listview is displayed. When user clicks on an item, then a second listview must be displayed. For example:
Select Continent > Select Country > Select State > Select City > Select Address
What is the best way to do this (less memory, faster, easier to code etc)? To create multiple listviews with multiple adapters? Or 1 listview with multiple Adapters? Lists are loaded from an external XML File.
So far i am creating a new adapter and setting it to the listview. How do i create a second listview and after clicking on 1st listview displaying the second one, with animation. Any examples? Extend my class to ListActivity or Activity?
View 2 Replies
View Related
Aug 13, 2010
Hello, I need to put several listviews inner a LinearLayout. The Listviews should be wrap content to adapt the listview to their items. I need have one only scroll with which I can scroll all the listviews. I know that i can't use a scrollview because the listviews have their own scroll (but i don't need the scrolls of the listviews because i have them in wrap-content). I thought maybe puting the listviews inside the LinearLayout I will hadn't problems with the scrollview, but it didn't work, the LinearLayout was fixed to the screen, the scrollview didn't appear and the listviews ended scrollable. Without the scrollview if i have the list in wrap-content, their shown properly but i haven't any scroll and i can't see the lisviews below the screen. Really i have had this bug for one month and i haven't found any solution,
My code:
CODE:............
JAVA
CODE:...............
How you can see i create the lisviews dinamically and i put indside the layout with a secttion header. if you have some doubt ask me I need find a solution soon.
Sample Image: http://www.freeimagehosting.net/image.php?6dea1468bd.png
View 1 Replies
View Related
Oct 11, 2010
I wish to work with checked list views wherein only one item can be selected at a time. Some queries related to this:
1) Is it advised to work with CheckedTextView as the ListView items, or a combination of CheckBox and TextView?
2) If using CheckedTextView, the text comes first and the checkbox appears on right edge. Is it possible to make the checkbox come on the left of the TextView?
3) How can I make one of the items as checked in onCreate()?
I am using array adapter and calling setAdapter() to populate list.
View 1 Replies
View Related
Aug 16, 2009
I want to show many listviews in one activity. Something like
Textview Listview TextView Listview ..........
Every listview has different type of adapter. For this, I made the activity class like:-
CODE:........................
View 3 Replies
View Related
Apr 20, 2009
Just looking at options for data updating affecting items in a ListView and have hit a few issues/queries.
There seems to only be notifyDataSetChanged() and notifyDataSetInvalidated(). While I could use notifyDataSetChanged() I am most likely in my case to have the scenario where additional data has been added and it seems inefficient to say the data has changed, which can only be resolved by calling getCount() and then getView() for all displayed items where knowing the data has been appended would just require adjusting the scrollbar. Is there some way to achieve something similar to this as the market seems happy populating dynamically in a manner that seems to reflect my desired behaviour (unless it just refreshes it all that fast).
Next question is the situation where the data behind just one item has changed. For instance I may wish to download icons in a background thread, but display available information with a placeholder icon. The best idea I've had so far is to store a map of indexes and views in my adapter which I can check against then call getView directly myself to have the view recycled with the new data. I'd just need additional logic to handle removing the map when the view gets destroyed or when it's recycled in getView. Either a bi-directional map (do we have one of those?) or two maps. Is the above likely to be my best approach or is there something built-in/better to get it done.
View 3 Replies
View Related
Jul 22, 2010
In my app, I have different activities with listviews. The datas come from a server with a REST method, and it's only done once, when I start the application.
The pattern that I'd like to set is to precharge all the listviews with the JSONs that I already have in local, and in parallel, launch a thread that get the new JSONs files with my REST methods, and then update the listviews.
For now, when I start the app, I parse my JSONs files, and build all the lists of objects. I access them later in a static way, from my lists adapters.
So I would like to know the best way to launch this REST thread, and update the listview. Should I use AsyncTask ? A service ? and then, when I update my local JSONs, I have to re-parse them, updates the lists of object, and call in my adapters NotifyDataChanged ?
View 2 Replies
View Related
Mar 22, 2010
Can I have two ListViews on a single ListActivity? I have built the xml file easy enough, but the code around ListActivity, setListAdapter(), getListView() and the like, all seem to be designed around one ListView per activity. How to get 2 ListViews in one screen?
View 3 Replies
View Related
Mar 25, 2009
I am trying to design a UI which utlizes two ListViews on the screen at the same time. Is this possible ?
So here is a quick example of how I was intending to do this.
1) Create an XML which positions 2 ListViews one onto of the other each ListView having there own ID
<ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="198px"
View 5 Replies
View Related
Apr 18, 2010
I guess my previous question wasn't clear enough ( http://stackoverflow.com/questions/2549585/android-failed-to-setcontentview-when-switching-to-listactivity ), so I explain as follows.
In my app I have two listactivities which uses two different listviews:
CODE:.......
As required by android, listview must have an ID which is exactly "@android:id/list". If I set the listview in both listview1 and listview2 with the same ID, then they will end up using the same format of listview, which is not what I want. But if I set one of the IDs to be sth like "@+id/listview2", android gave me the error: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
My listview is sort of complicated, customed list with image icons and text, so in my code, I also extended the ListAdapter:
CODE:........
View 1 Replies
View Related
Oct 2, 2010
I'm having a several issues with ListViews.
The first problem is the layout that I use for every row of the listview. When I click in a row I've programmed that it expands with some other views. All works fine, but when I try to click again for shrink it, it seems that it's no focusable and doesn't highlight and, of course, it doesn't shrink. If I change the deprecated singleLine in the XML to inputType="text" all works fine but the row never highlithts.
The second problem goes when I try the method that Romain Guy said about the RelativeLayouts and the alignwithParentIfMissing. No matter whatever I try, but it seems impossible to implement in a ListView.
Another problem is with ellipsize, but it looks is a Android SDK bug and only works fine if I set singleLine in the attributes of the TextView
Well, I hope someone can helps me. I put the code of the listview and the XML of the layout. If you need some more code or information, as if you find any improvement or error.
CODE:..............
About the response of adamp, I've done this:
CODE:.......................
And finally, I have this listener:
CODE:..........
Once I've done that, there is no change about the behaviour of the listview. But I noticed that only I can expand the row clicking in the textview, if I click inside the row but in a empty area nothing happens.
View 1 Replies
View Related
Aug 26, 2009
This application I've been working on has databases with multiple megabytes of data to sift through. A lot of the activities are just ListViews descending through various levels of data within the databases until we reach "documents", which is just HTML to be pulled from the DB(s) and displayed on the phone. The issue I am having is that some of these activities need to have the ability to search through the databases by capturing keystrokes and re-running the query with a "like %blah%" in it. This works reasonably quickly except when the user is first loading the data and when the user first enters a keystroke. I am using a ResourceCursorAdapter and I am generating the cursor in a background thread, but in order to do a listAdapter.changeCursor(), I have to use a Handler to post it to the main UI thread. This particular call is then freezing the UI thread just long enough to bring up the dreaded ANR dialog. I'm curious how I can offload this to a background thread totally so the user interface remains responsive and we don't have ANR dialogs popping up.
Just for full disclosure, I was originally returning an ArrayList of custom model objects and using an ArrayAdapter, but (understandably) the customer pointed out it was bad memory-manangement and I wasn't happy with the performance anyways. I'd really like to avoid a solution where I'm generating huge lists of objects and then doing a listAdapter.notifyDataSetChanged/Invalidated()
Here is the code in question:
CODE:.....................
View 2 Replies
View Related
Dec 16, 2009
I used two listviews like this if my problem is one back line is coming inbetween two listviews.But i dont want that that balck line in betweem them.
View 2 Replies
View Related
Jan 7, 2010
In my ListActivity, I need header and footer views (on the top and bottom of the list) to be used as previous page and next page buttons on my list, respectively, because I want to display only 20 items at a time.
I set my header and foot views by doing:
CODE:............
This works fine, but I need to dynamically remove and add these header and footer views, because some pages of my list may not have a next page button or a previous page button.
The problem is, I cannot call addHeaderView or addFooterView after I have called setListAdapter.
View 4 Replies
View Related
Nov 19, 2010
The Twitter application for Android has a nice way of refreshing the listview by pulling down and automatically refreshing the data source.
View 1 Replies
View Related
Aug 5, 2010
I have a ListView on my ListActivity and I'd like the rows of the ListView to be 1 of 3 different layouts. The first item in my list is always going to use layout A, the second item in my list is always going to use layout B, and all subsequent items are going to use layout C.
Here is my getView function: Code...
R.id.label1 and R.id.label2 are TextViews on R.layout.layout_A. However, txtLabel1 and txtLabel2 are null after trying to set them. Why?
I stepped through this code in the debugger and it inflated the correct layout (R.layout.layout_A) and fell into the correct case below to set the R.id.label1 and R.id.label2 text. Also, if there is a better way to do this, please let me know.
View 1 Replies
View Related
