I am newbie to android my activity implemented a drag and drop in list view but when my list is full its not displaying last record on the screen as length of the list record is bigger then screen size .. so when I tried to drag and drop my first record at the end of the list
I can select first record but I cant scroll down to the last record .. I need to implement when I select my first record and drag it toward down list ll automatically scroll down toward end of the list and vice versa hope I make some thing clear to you .. if still there is any ambiguity let me know
Thank
Try to use listview.smoothScrollToPosition(position) inside your drag and drop function. Define the position of dragged element and if needed use smoothScrollToPosition method.
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I have a situation involving animation of listview's item appearances.
I have a few views in a ScollView , the last of which is the listview. I have attached an appearence animation of the row (a fade in animation).
The problem I have is that when the screen is loaded , the getView() of listview already executes for the initial items , even though the listview is not currently in view.
Hence when a user scroll downs , he sees the list plainly.
I am unsure how to go about this situation . Is there any callback that can be invoked when a row from a listview becomes visible on screen ? .
Yes there is a callback (OnScrollChangeListener), first visible index and last visible index etc. You can achieve what you are trying to using combination of these.
But you need to try that yourself first. No one can simply write a code for you.
You can learn about listview here
I'm having a strange issue. I need to implement swipe to delete in my listview. When user swipes left/right, I need to animate a delete button into/out of the screen and then on delete button click I need to delete that item from listview.
I am using Commonswares [TouchList] (https://github.com/commonsguy/cwac-touchlist/tree/master/src/com/commonsware/cwac/tlv) library to achieve that. In onFling method it gets the position of the swiped row and send it to onRemove method in my activity. I can delete the item accurately. But if i animate the row at swiped position, multiple rows get effected. I am not able to fix this issue nor am I able to find any help.
Any help will be appreciated.
I had a similar issue to this which was down to Android's view recycling.
(A good explanation of it is available here)
To resolve I simply reset the animation in the item's OnResume method as I didn't need to retain the animation for the item which has scrolled out of view.
I wan for the ExpandableListView with Drag and Drop of ListItems in Android,i google it but i haven't found any good tutorial or any good link for ExpanadableListView with drag and drop list item. Please suggest me where can i learn to implement drag and drop for ExpanadableListView. Any tutorial,sample code would be appreciated greatly .Help me. Thank you.
The basic idea behind drag and drop can be divided into two sections, like updating the UI and updating the data. Updating UI starts with hiding the selected item and show a detached row with the same value as the hidden item, this will show that the selected item is ready to drag, now move the detached row over the list view based on the touchmove event, when the user takes the hand ie the touchup event or any other event that happens while dragging, get the current row at which user touched last , remove the detached row and do the data updation and invalidate the expandable listview, this will redraw the list based on the new set of data and the user will get a feeling that the item is dragged and dropped in the list.
I have done something similar, see this
I am using list view using "ArrayAdapter" to display number of items while user is looking at results when user click on load button i want results to load and prepends(add in the beginning)
Found solution
use adapter's insert method and add it to position 0 every time and also before adding reverse order so that first item will display at the beginning if don't reverse first item will display at end.
I am displaying a radio schedule in a List View and would like to highlight the currently playing program. I also want to allow the user to click on any program and get more details for the program. I have tried the following:
radioView.setSelection(adapter.getCurrentProgramIndex());
radioView.setSelected(true);
This does scroll the list down to the selection which is good, but it does not highlight the selection. I understand this is because the device is not in touch mode, but how then would I go about highlighting the current program?
how then would I go about highlighting
the current program?
Change something in that list row. For example, perhaps you have an icon you can switch to be a "playing" icon, or have an icon that is formerly INVISIBLE become VISIBLE, or something.
Bear in mind that you will need to have these smarts in your row binding code, so that if the user scrolls, you correct undo and redo that setting -- otherwise, row recycling will make it appear that other programs are playing.