I have a list view which contains some 20 odd items along with a check box. Now when iam trying to delete an item by checking its checkbox,Now if I have six elements in this ViewList, which are visible on the emulator, then the same code just works fine. Problem arises when the list is long and it starts scrolling and some element are not visible.
View 5 Replies
I want to be able to tell if a view is visible in my listview, which is populated by a custom CursorAdapter. How can I do this?
View 1 Replies View RelatedIs there a way to get the first visible View out of the ListView in Android?I can get the data that backs the first View in the Adapter but it seems I can't get the first View in ListView.I want to change the first visible view after a scroll action finished. I know that I should not save references to the view.
View 2 Replies View RelatedI have a ListView with an adapter extending BaseAdapter.I create a view (from a LinearLayout and I put some items ont it depending on some parameters. I have a textview, with a drawable and sometime another textview next to the drawable in this horizontal linearlayout. For some reason, this command doesn't seems to work. So when my textview doesn't fill the full width of the list, I can only click on the part of the elements with the widget on it. I have try playing a lot with the layout and I can't get this to work. The parameters seems to be ignore all together. Only hack that would work I found was to set a big minimum width on my linearlayout but I don't think that's the best solution.
View 1 Replies View RelatedI've a ListView where every element in the list contains a TextView and two different Buttons.I found a solution as described in my answer below. Now I can click/tap the button via the touch screen. However, I can't manually select it with the trackball. It always selects the whole list item and from there goes directly to the next list item ignoring the buttons, even though I set .setFocusable(true) and setClickable (true) for the buttons in getView().This causes that no list item is selectable at all any more. But it didn't help in making the nested buttons selectable.
View 2 Replies View RelatedI am rendering a ListView inside a dialog. The ListView elements are very simple TextView objects. The problem: whatever I do, they never take the full width in the list view, which has the side effect that the list view selector only covers the actual text, not the whole list entry (i.o.w., if the text of the entry is much smaller than the width of the listview/dialog, then only a tiny portion of the list element is highlighted when focusing it).
View 3 Replies View RelatedHow can I change the first visible item in a list view (I searched a method such as setFirstVisiblePosition) ?
View 2 Replies View RelatedDoes anyone know how to make a ListView object larger such that more than one Entry item is visible at the same moment ? Both parents are already set with "fill_parent" but the view continues to show one-and- a-half Entries.
View 5 Replies View RelatedI don't know exactly how to explain this problem, but I'll try. I have a ListView with several items. Each item has inside a TextView and two ImageView. I want the ImageView change when I click on them, and I want to open a context menu when I press for a long time into the ListView item.For the ImageView, everything works properly. For the whole item, I can show the context menu after a long press, but my problem is that the ImageView changes as well when I am pressing the TextView, for example.I hope you understand my problem. I think that all the children of a view are affected by an event in the parent, but I am not sure.
View 2 Replies View RelatedI am on Android 2.1 and I have one multi column Custom listview Using BaseAdapter with an editable edittext at the end of the listview. If the data in the listview do not contain the data of user choice then user should be able to enter data. If the data is already there in the list user will be able to select the data using custom selector. If a selection is made in the list view and user wanted to enter data in the text field at the bottom after selection then the marker in the list view should be unselected. I tried to use onclick() method on edit text using click listener. First time when it is clicked, edit text is getting focus and onclick() method is not fired. And when it is clicked second time, onclick() method is fired and notifyDataSetChanged() method is called. I tried to call the notifyDataSetChanged() method from the Focus Listener, list view selection is gone in my first attempt and edit text is not receiving any data input from the keyboard (frozen).
View 1 Replies View RelatedWhen I have a ListActivity and an Adapter how does Android handle a list with 200 elements.
Does it try to load all of them directly how does it wait till the user scrolls and then renders those elements?
Do I have to worry with performance when a list is too long?
In my application by using web service i get the data from database and stored that data in hash table.I took that data from hast table to array.this array data can be displayed in button.My array contains 10 elements.For animation i used view flipper.Now i want to do is display that array elements on button one after another for every 10sec.But in Updater method i didn't get all array elements.How to solve this one
I am sending my code:.......................
I need an advice. What is the best way to implement in android a list of such UI elements (see the ref)A list contains a lot of such elements (about 30-40). I'm using now relative layout and 4 text fields and I think it isn't a good way.I think it's too heavy (full list will contain: 30 relative layouts and 30*5 = 150 text fields).
View 1 Replies View RelatedI am looking to find out how to assign an image to a imageview in each child of an expandable list.
If anyone has any information or links to find out how to do this. code...
is what my adapter looks like at the moment, I have very little experience in customising adapters so I do not know where to start.
I have a vertical LinearLayout that contains a custom View that I've defined in my app and and a TextView. I'd like my custom View to be aligned on the top of the screen and the TextView to be aligned at the bottom of the screen. Unfortunately, no matter what changes I make to the attributes of the XML file, my custom View always seems to be centered vertically when I run the emulator. The xml is like the following:
<LinearLayout.............
I'd like to show another List View 'B' after clicking a item of List View 'A'. I use onListItemClick event in Android 1.6 project.
View 6 Replies View RelatedIs it possible to have a horizontal list view with an vertical list view? I would like to horizontal list scroll within a vertical list scroll.
View 13 Replies View RelatedI want to set the background of a Relative or LinearLayout to a custom drawable. I want the shape to draw two horizontal lines across the bottom, leaving the central part transparent (empty). The following draws the horizontal lines centered vertically, where as i need them to be aligned to the bottom of the shape. (If you add a rectangle as an item you can see the shape expands to the dimenstions of the parent, but the lines are still centrally aligned). Code...
View 1 Replies View RelatedI set sameting to invisible like this on Android: myImageView.setVisibility(View.INVISIBLE);
And then visible like this: myImageView.setVisibility(View.VISIBLE);
I don't know if myImageView is visible or not now, how can I check it like this:
if (IF myImageView IS VISIBLE) {Do something} else {Do something else}
How can I do that? What do I have to write within the brackets?
I am trying to set up a ViewFlipper that changes a SlidingDrawers content each time a button is pressed. So far every view I set up worked fine, but now I am trying to create a ListView (including single_choice_mode) within a child view of the ViewFlipper, but my attempt only let to a NullPointerException. As I only discovered ViewFlipper today, I am not yet familiar with it and may not have understood it completely. if someone could give me a hand and help me find out what I have done wrong, that would be great. Here is what I have done:
The code for the onClick event of the ImageButtons:
public void onClick(View v){
if (v == btnExposure){
mFlipper.setDisplayedChild(0); }
else if (v == btnProperties){
mFlipper.setDisplayedChild(1);}
else if (v == btnSpecialEffects){
mFlipper.setDisplayedChild(2);.............
I have a layout that is three linear layouts. The top has some icons and the middle has a tabhost. Each tabhost has a list inside it. The bottom linearlayout has two buttons that should stay at the bottom on the screen at all times. The problem is when a list in the tabhost gets too long, it displays over the buttons. I tried to find some way to get the buttons to bedisplayed over the list but have failed so far.
CODE:................
What's the best way to check if the view is visible on the window?
I have a CustomView which is part of my SDK and anybody can add CustomView to their layouts. My CustomView is taking some actions when it is visible to the user periodically. So if view becomes invisible to the user then it needs to stop the timer and when it becomes visible again it should restart its course.
But unfortunately there is no certain way of checking if my CustomView becomes visible or invisible to the user. There are few things that I can check and listen to: onVisibilityChange, it is for view's visibility change, and is introduced in new API 8 version so has backward compatibility issue onWindowVisibilityChange, but my CustomView can be part of a ViewFlipper's Views so it can pose issues onDetachedFromWindows, this not as useful onWindowFocusChanged //Again my CustomView can be part of ViewFlipper's views. So if anybody has faced this kind of issues please throw some light.
like many others, I want to kill my Android application on "exit" button. Really kill, not just move to background and stop all active code. (I know very well that Android does not like it.) I found Process.killProcess(Process.myPid()); and System.exit(0) which both work fine (I have no problem with activity stack, the "exit" button is in my base Activity.). But there is a problem. When I kill my process and I am back in the shell, I press [Home] button. It shows list of applications that are on the background including my application which has been killed.
Is there a way how to do both: 1) kill the process and 2) remove it from the Android application list that is shown after user presses [Home] button? Thanks for all replays (with the exception of that stupid "you should not exit applications explicitly on Android"
I am testing my android application on HTC Tattoo device.
I have written some custom list views with my own adapters. The problem i am facing is that i can see my list properly in the emulator but when i run the same application on HTC tatto, the divider line between individual list item is not visible.
What may be the problem and how i can overcome from it. In addition, i am also not able to see separator between menu items as well on the device.
I have made a sample application to flip through different layouts in a viewflipper.
XML is basically (pseudo-code)
<ViewFlipper>
<LinearLayout><TextView text:"this is the first page" /></LinearLayout>
<LinearLayout><TextView text:"this is the second page" /></LinearLayout>
<LinearLayout><TextView text:"this is the third page" /></LinearLayout>
</ViewFlipper>...........
I'm trying to create a multiple selection list where the selection is represented graphically rather than with checkboxes.My list has checkboxes, but I want them to serve a different purpose. I'm using a cursor to hold my data and created a custom view binder for the SimpleCursorAdapter. I did this for the checkboxes and general flexibility.So far I haven't even been able to show one line as being selected. I've enabled multiple selection on the list and denied the children of the list item focusability. I've tried manually changing background color with the position fed in through the list item click listener. But the wrong items get changed and they don't even change to the right color. I've enabled touch focusability with no improvement either.Ideally, I'd like the trackball highlight focus bar to appear in multiple places. But I don't think this is possible unless you use the drawable directly. But I don't know how to find or apply it. My next idea was to have a slim view bar that changes color. But I had the same problem with the wrong item being selected so I never finished trying to guess the index position to see if this would work. My most recent idea is to completely swap out the view for another one if it's selected. But I have no idea how to do this either. I'm thinking of using an array list to store the _id s of the items that need a different view to get around the wierd selection problem. I'm also thinking of passing in the ID field as my from and the selection view as the to for my adapter. Then I'd intercept it with my binder and change the view accordingly. But once again, I'm not sure how to do this successfuly.
View 7 Replies View RelatedI am trying to display the text from json in a list view.But my problem is that i cant figure out how to display them in list view. I also want to get only some of the text from url(for example, alerttext and date). Can anyone help me in declaring the list adapter and list view in order to display the data in the way i want.
View 1 Replies View RelatedBy Default in the Listview,focus will come on the list item.Instead of that, can I get only the border to the list item?I can achieve this by using a transparent image as a list selector.Is there any other simplest way to achieve this requirement?
View 1 Replies View RelatedI've tried to add a TextView before a ListView in a LinearLayout. The result is that the ListView wont show at all. The same thing happens if I put the TextView after the ListView, but then I will only see the ListView. Is there a way to get a text view above the ListView without to much of a hassle?
View 10 Replies View RelatedIn my app i'm setting background to each child views in listview. So that listview default focus ( orange color ) is not focusing. Is there any way to set both ( listview focus & child view background)?
View 1 Replies View Related