i'm rearranging items in the list by dragging the item. I'm in the touch mode and want to scroll view couple of items then i'm on the last/first visiblePosition. Since i'm in the touch mode setSelection is useless. How i can scroll a list in the touch mode. For drag i'm using onTouchEvent , onLayout to change background for the current item + some stuff in adapter to make a swap.
View 3 Replies
Is there a way to make highlighting of a row in a listview delayed if the user is simply scrolling the list with their finger? To clarify, when the user puts their finger down to scroll, the intersected row (if any) gets highlighted for a short moment, before it realizes the user is just trying to scroll (then the highlight turns off). It seems like the timeout is too short - iPhone has the same behavior, just seems that the timeout is longer to discern between a real row- select-touch, and just a scroll-touch. Any way to tweak this? You can see the behavior in any of the system apps that have lists..
View 2 Replies View RelatedI'd like to get your suggestion for best option to implement the following interface on android 2.2.
1. Folders (or folder windows displayed as pictures) are assembled or places as a deck of cards on screen 2. when using a touch (scroll up motion) each folder windows move up (scroll up) at a tilted angle and gradually it gets straighten in vertical direction when reaches at the center . The other folder windows are linked as a chain so if you scroll up again the next folder window will take the center position and so on until the last one. This can be scroll up or down.
Apparently, it seem it can be done with GridView or Gallery Widget to start instead working for new widget. if you have experience doing such interface , suggest me for better option?
I have to acheive that the Touch Scroll on the View Flipper. For Example. I have to Images. At First, ViewFlipper Shows an First Image. Now I Flung the view from right to left. The First Image view SLide out Left and Th Second Slide in from Left. I can Achieve it By this Post. But I want to Scroll the image. that is, On the Action_Move Event i want to do Touch Scroll. For Example, When i move the touch from right to left. it will flung how much the touch moves. on that time the output should looks the both images partly. How to do that? What i have to measure the Screen levels(height & width). Example codes are more helpful. Sorry for the Bad English.
View 1 Replies View RelatedIn the Android API examples there is a Snake game. This game uses a class called SnakeView, which inherits from TileView.
I am doing something very similar to this. I am inheriting from TileView to create a class (SkyView), which will become a square board for a board game (similar to the board for Checkers).
However, I would like for my game board to be 400x400 pixels in size, which will be bigger than the screens of some Android devices (such as the G1). And I would like for the user to be able to freely scroll and drag the board around with their finger (both horizontal and vertical scrolling/dragging).
Can someone please point me in the correct direction for implementing this? The board must be no smaller than 400x400px in size. And however much of the board that can be displayed at once on the screen, should be displayed at once.
Should I wrap my SkyView widget in an AbsoluteLayout and use Scrollbars? If so, what Scrollbar properties to I need to use? I played around with Scrollbars in both directions but couldn't get it to work. Is there another view layout I should put it inside? Code examples would be nice! Thanks for the help. I am at a loss with this one.
- 2 input boxes where the user can enter criteria to search for - 1 search button - when the search button is clicked, a search is performed and on the same page the matches are shown *below* the 2 input boxes and search button. - the results can be quite a few (say up to 50), which won't fit all on the viewable part of the screen, so the user has to be able to scroll down in the results. - when the user scrolls down over the results, the 2 input boxes + search button should of course also scroll up out of sight.
Basically the behaviour you get when you for example do a google search on google.com. But, for clarity: I don't want to use the WebView. Note that there should be no scrollbar for the results only (that can be done easily with a standard ListView), the all needs to scroll as a whole. The reason I want this behavior is that I don't want to direct the user to a next screen with the search results; that would be so annoying having to go back to the "search" screen all the time if you want to enter another search criteria, like if you figured out you made a typo.............................
I would like to catch horizontal scrolling in ListView. I don't wont to scroll ListView content, I need an event only. I use GestureDetector, and in onScroll() method I can figure out when user scrolls in horizontal direction. This part works. But my problem is ListView fires onItemLongClick event also. I need this event, but only if user doesn't scroll. If user scrolls in vertical direction, ListView doesn't fire onItemLongClick event. I need the same behavior for horizontal scrolling also.
View 2 Replies View RelatedI'm trying to scroll the ListView up/down actions by pressing a button, instead of using finger gesture. It looks like the super class AbsListView.onTouchEvent(MotionEvent ev) handles all the scrolling up/down motion and animation. So if I want to scroll the list by pressing a button, I don't really have a MotionEvent to pass onto onTouchEvent method for it to work. I tried ListView.scrollTo(x,y), it kind of works but the hidden part of the ListView is not rendered when shown on the screen. I am trying to re-draw the list by using: ListView.invalidate(), ListView.invalidateViews(), list.adapter.notifyDataSetChanged()
View 3 Replies View RelatedWhat I have now is a layout that includes a list view at the bottom. All of the items in the layout above the list view remain fixed as you scroll through the list view. I would like the entire page to scroll so for example when you reached the bottom of the list you would no longer see the items above the list view.
View 5 Replies View RelatedI have a listview displaying my data.Ok. I want to set the scroll position in a position of my choice, but I just cant do it. I used :
myListView.setSelection( anyPosition ); myListView.setSelected(true); and has not worked. I also tried : myListView.scrollTo(0, PositionY); and myListView.scroolBy(0, PositionY);
and there's a strange behavior, this two methods doesn't put the scrool in the "PositionY", it made the "PositionY" be the first position in the list, cutting everything that exist before.
Get scroll speed of Listview, Ivan Soto Fernandez Web Developer
View 4 Replies View RelatedI have a long listView that the user scrolls around and then returns to the previous menu. What I want is that when the user opens this list View again the list to be scrolled to where the it was previously left. Any ideas on how this can be achieved ?
View 2 Replies View RelatedI have 2 ListView in a layout. I want each ListView show all their items. And scroll the whole layout.
View 1 Replies View RelatedHow can i get rid of the shadow when I scroll ListView.
I have shadows appearing on top and bottom of the list.
I am developing an android application where I need to manipulate the background image of the rows in listview on certain conditions. Initially when the listview is loaded all works properly. But when I scroll down to the listview and come up again the background image changes. Can someone tell me the reason why its happening so? Hope to get the reply soon.
View 6 Replies View RelatedI'm trying to figure out how to save the location my ListView is scrolled to. Currently I am saving the ArrayList of the ListView. When the user comes back to the screen I reload the ArrayList but can't figure out how to make it scroll to the last location.
View 3 Replies View RelatedI'm trying to scroll my ListView (from an Activity) to a particular element in the list. I know it's position in the list. How is this possible?
View 4 Replies View RelatedIn my app, my main class extends ListActivity and calls a fillData() function to reload the list whenever changes are made. I'm still getting the hang of this, so I borrowed that concept from the Android Notepadv1-Notepadv3 tutorials. Everything works great, however whenever I need to change the list (remove an item, re-sort it, edit an item), the ListView refreshes and loses its scroll position. The scroll position is reset to the top after each fillData() call.
It appears to be resetting the scroll position to the top because I'm using setListAdapter() each time in fillData(), setting it to a new SimpleCursorAdapter. How can I get the list to "update in place", where the scroll position is seamlessly maintained to the user? I tried heading down the "items.changeCursor(cursor)" path, but that didn't seam to do much for me.......................
I am trying to make a terminal type app that is wider than the actual android screen. A listview is great except that I don't want the text to wrap. If the text is wider than the screen I want it to print the full text and then the user can scroll over horizontally if they want to see what was printed off the screen. Just FYI this is for ascii type tables. I have followed this example:
It works great as far as horizontal text goes it does exactly what I want but I am unable to get the ListView inside the custom LinearLayout to actually scroll veritcally. I have tried passing the Y coordinates from the onScroll method to mListView such as: mListView.scrollBy(0, distanceY); but that seems to move the custom LinearLayout window instead of just scrolling the ListView. I can tell that the ListView is not scrolling because the window moves without the vertical scroll bar of the ListView moving.
My application show a ListView with a button which allow user to add an element. When the user clicks on this button, another Activity is started to allow user to populate the new element. When the add is finished, we return to the previous Activity with the ListView and I would like to scroll to the new element.
Note that this element is not necessarily at the end of the ListView because there is an "order by" when I retrieve the datas from the database. I know I need the cursor position of the new element to make the ListView scrool to it, but the only info I have about this element is its id, so how to convert this id to cursor position ? Do I have to loop on the cursor to find the position?
I have a ListView with an edit text and a button below it. When I click on a listView item the keyboard appears and push up the edit text and the button. I want the list to scroll to the selected item.
View 2 Replies View RelatedI am using Listview, i want to scroll down to list's 10 item when view get loaded, how can do that?
View 1 Replies View RelatedI am facing a strange an issue that should simple to solve I suppose. I wonder how can I automatically scroll to see an element in a list view. Let's say I know that I want to see the element view number 6 in my list view, how do I scroll my list to see this element ?
I look at the API but without any success, just a word on where to look.
I have a main menu screen with a simple ListView that contains "links" to further screens in my app (Browse, Bookmarks, Settings, About, etc.). Underneath the ListView there is a TextView (more accurately, a TextSwitcher that rotates TextViews) that changes every 10 seconds to display a new "tip".
In portrait mode, this works fine. There are my five list items in the ListView , and my tip label underneath. However, when I switch to landscape mode, the ListView is taller than the screen. The ListView scrolls normally, but I cannot scroll past the end of the ListView to see the TextView underneath.
I have tried every possible combination of Layouts, wrappers, ScrollViews, and layout_height parameters and I simply cannot get it to behave.
Here is the simplest code ...
Like I've said, I've already tried so many different combinations that I can't list them, and for the most part I was randomly inserting XML in an attempt to get something to work the way I wanted. So I'd greatly appreciate suggestions as to how I would go about doing this the right way.
I have a listview with a custom arrayadapter that handles about 15 strings. The style of each row alternates (between labels and values for those labels--for example row 1 could be "email address" and row 2 would be the actual email address). I'm changing the style of each row to alternate like this in the arrayadapter's getView() method. So if the item at the current position is a label, I'll change the styling from the default row style (which is what the values have applied to them). When the listview first loads, the styling is perfect and just how I want it to be. If I scroll the list slowly up or down, it stays that way. However, if I scroll the list fast up and down, the styling of the value rows starts changing to that of the label ones until all of the rows have the styling of a label row. I've used custom adapters on other listviews in the app with no problems like this. Found out that it also changes all of the rows to the label styling on portrait->landscape orientation changes. Doesn't do this on landscape->portrait changes. Below is the adapter I'm using.
public class DetailsAdapter extends ArrayAdapter<String> { private TextView text = null; private String item = null;
public DetailsAdapter(Context context, int resource, int textViewResourceId, String[] objects) { super(context, resource, textViewResourceId, objects);
} @Override public View getView(int position, View convertView, ViewGroup parent) { text = (TextView) super.getView(position, convertView, parent); item = getItem(position);
if (item.equals("Name") || item.equals("Mobile") || item.equals("Home") || item.equals("Email") || item.equals("Address")) { text.setBackgroundColor(0xFF575757); text.setTextSize(15);
text.setTypeface(null, Typeface.BOLD); text.setPadding(8, 5, 0, 5);
} else { text.setPadding(15, 15, 0, 15); } return text;
} @Override public boolean isEnabled(int position) { item = getItem(position);
if (item.equals("Name") || item.equals("Mobile") || item.equals("Home") || item.equals("Email") || item.equals("Address")) { return false;
} else { return true; } } }
I have defined a custom theme, where I am drawing a dark gradient on my window background. My ListView background is set to be transparent, however whenever I scroll, the background color turns black, and then after scrolling has stopped, goes back to the gradient color. Why is this?
CODE:.....................................
I have two ListViews. Is there any way to synchronize the position of ListViews when I scroll any one of the Lists
View 1 Replies View RelatedI'm building a chat room application where new events are being polled for every X seconds. Every time that happens, this code updates the RoomAdapter (a custom subclass of ArrayAdapter) with the new data and scrolls it to the bottom:
RoomAdapter adapter = (RoomAdapter) getListAdapter();
for (int i=0; i<newEvents.size(); i++)
adapter.add(newEvents.get(i));
getListView().setSelection(events.size()-1);
This is fine, except that if the user is scrolling up to glance at the room's history, it's going to jump her down to the bottom when the poll happens. What I'd like to do is have it so that if the user is already at the bottom of the list, it stays there after a poll for new events. If the user's intentionally scrolled upwards, I'd like the user not to be disturbed.
How do I detect when I'm already scrolled to the bottom of a ListView?
Note: I can't do getListView().getSelectedItemPosition(), because as the docs note, calling setSelection when in touch mode does not actually select the item, just scrolls to it.
I have a listview that when scrolled and the items go off of the screen they are not redrawn when I scroll back to them (the text and checkbox). In fact, items that are off the bottom of the screen in the listview never get drawn when scrolling to them. This only happens in Froyo. Any other version it works just fine. I have checked and the data is there as expected in the adapter when the getItem method is called, it is just not visible. The listview item is there (it's occupying the same amount of screen space per item), I just cannot see the text or checkbox once scrolled off screen and back on again. Code...
View 1 Replies View RelatedI'm having a little difficulties while trying to get a certain layout to work: I want to have list. List does not have to be scrollable, but should be shown completely. But the page itself should be able to scroll (with the lists in it), if the total content ist higher than the screen.
CODE:.................
It only uses a small part of the screen (about 2 lines per list), instead of filling the available height, and the lists themselves can be scrolled. How can I change the layout to always show the whole lists but have the screen be scrollalbe?