Android :: Adding Item To View Programatically?
Nov 8, 2010
I am trying to find out how I can add an item (from xml drawable/workaround_item.xml) in a LinearLayout that is vertically aligned.
CODE:.........
At the beggining I was trying to use a ListView but as far I as know there is a bug using listview inside a scrollview. I was doing this because i have more components on the view that should be scrolled together with the list view. So I decided to remove the listview and implement a simple linear layout where i will be adding each element bellow other and so on.
The layout for the activity is as folow (layout/workaround.xml) and i would like to start adding the elements below the top bar.
CODE:........
Thats my java code:
CODE:......
Thats the result i am getting: http://twitpic.com/3562yu
Does android allow us to do this? If so, Hoe can I add the elements and set their values? (this layout will be dispalying results of soccer games).
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Apr 9, 2010
I am currently using a modified Gallery widget to display real-time events coverflow-style. What I now need is some Method to scroll to a specific item within the Gallery. Such method IS available within frameworks/base/core/java/android/ widget/Gallery.java as scrollToChild but is declared as private. Do you know of any manual way to move/scroll around a Gallery / List Widget?
Current workaround would be to inject DPAD_RIGHT using the Instrumentation Framework, which is as really ugly solution.
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Apr 9, 2010
I 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.
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Sep 21, 2010
Is it possible to have something similar like Blackberry in Android: link text. I want to add a menu item particularly to the Contacts Option menu.please let me know if this can be done in android.
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Aug 12, 2010
Is it possible to add a menu item to the default calendar app for Android? if so, how do i go about doing this?
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Sep 4, 2010
I have a FrameView that's created in my XML layout, and in my code, I'm trying to create a series of new ImageViews and add them as children of this FrameView. The ImageViews are small, only about 15 pixels square, and I want them to show up in various positions around the FrameView (I'm trying to implement what looks like a radar screen). I'm able to create them and add them just fine, and they show up on the screen.
However, when I try to set their margins, it doesn't seem to have any effect. No matter what I set, all the ImageViews show up in the top left corner of the FrameView, as opposed to offset by the appropriate margins. My XML layout is listed below, along with the code that generates the child views. Am I doing something wrong? How can I get the margins to show up properly? Or is there a better way to do this than by using margins.
XML:
CODE:....................
Java:
CODE:...............................
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Feb 18, 2009
When you long press on something in Android, a context menu comes up.I want to add something to this context menu for all TextViews in the system.For example, the system does this with Copy and Paste. I would want to add my own, and have it appear in every application.
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Mar 10, 2010
So my layout looks basically like this:
<ScrollView>
<RelativeLayout>
<BunchOfViews/>
<ImageView android:layout_alignParentBottom="true"/>
</RelativeLayout>
</ScrollView>
I have the ScrollView so all of the layout always is visible no matter the height of the screen. The problem is that on a very high screen, I still want my imageview to be at the bottom. However, a child of a ScrollView dont seem to have a defined bottom. The View is placed at the top of the layout. How can I solve this problem in a neat way?
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Sep 17, 2010
I want to programatically refresh Gallery every time I download a video from my application. It doesn't automatically show up in the gallery.
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Oct 28, 2010
I am trying to programatically define my program layout and add a button to it at a certain position. I am not using the layout xml as the content view.I have then added a button that I want to apply the properties
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Oct 28, 2010
I have checked setId() method of the view, it accepts integer parameter. But there are possibilities of assigning same id to different views, which may create problem for me while i do findViewbyId().
My question is "How to set unique id to the view programatically?"
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Mar 20, 2010
I need to draw a child view containing a rectangle and button on top of the content view at particular location on the parent (content view). How can I do this? Did not find an explicit way to set origin of child view?
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May 21, 2009
I have the list view which is having 10 Items. I want to block few items (Disable). How do i do this? Can any one help me?
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Jul 20, 2009
If I want to execute the focused item on the view, I need to select focused item and press enter. Now I want to find another way to execute it without using click action. Does everyone know the other way? Thank you very much.
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Sep 10, 2010
Is it possible to add a custom menu item to the long-press menu that opens in any text box?
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Dec 10, 2009
I'm developing an application which has an listview. I'm currently creating the list item view dynamically from code (linearlayout, which includes 2 textviews and 1 imageview), but i'd like to use an XML resource for this. I read it is resource intensive when getting this view using findViewById within a loop. I thought of using a custom adapter for this, but am not sure on how to include lazy loading of the image then.
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Jan 11, 2010
How can I change the first visible item in a list view (I searched a method such as setFirstVisiblePosition) ?
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Feb 13, 2010
I have a list view having several items and it is multichoice list. I want to display the checked item of list view. how i can do this.can anyone help me?
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Nov 4, 2010
As I am reviewing and prototyping my android project, I noticed that there is a view that has a list of items that are very customized. I have figured out most of my tools that I plan to use but I need some advice.
I have a list of items which can contain photos, some text to the right, an image to the bottom and more text below that. Very confusing I know. Each of these might be present for an item. The only thing that will always be there is the title.
So my question - what is the best way to create each custom list item view? I am thinking I have to use this getView to create each view. But when creating each view, is it best to 1) create a view dynamically and adding an image, for example, if it exists, or 2) create an xml file with all possible elements and hide them depending on the item?
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Apr 9, 2010
I want to customize list view item spaces between different items. We generally display list item with default space between them to get viewed in list.I want to customize the space difference between them so that more data can be displayed in the list within the display part at a time
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Aug 12, 2010
I have a ListActivity where the list items are defined in another XML layout. The list item layout contains an ImageView, a CheckBox, a TextView and such.
What I want is to set an onClick listener to the CheckBox in each list item. That is easy enough. The trouble is I need that onClick handler to know which position in the list it is.
I'm attaching the listener to the CheckBox in getView after that convertView has been inflated. The getView method has a position parameter, but I cannot reference it in the onClick handler for my CheckBox. I understand why, but I don't know how to get around it. How do I accomplish this?
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Apr 22, 2010
I was attempting to add a custom view in XML, but I kept getting force closes. It works fine when I just find the parent and use addView() so it isn't the code. I'm pretty sure I'm just getting the constructors wrong. Does anyone have any experience with this?
Here's what I've got:
CODE:................
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Oct 9, 2010
Is there a possibility to add a view or derivative (button, textview, imageview etc...) to another view without having to go through layouts?
I have a class called ScreenView, it derives from View (e.g. public class ScreenView extends View).
I wanted to display text into it, labels, images etc..
On an iPhone it's trivial, simply create my objects and use addSubview method ; you can embed any UI objects into another. Most UI toolkits work that way too.
Problem with layouts is that I haven't found an easy way to properly position a subview (say a text view) in a given location of the enclosing View. I want one to contain the other...
I was hoping I had missed something in the documentation (which is far from being intuitive that's for sure) and I could do something like myView.addView(subview). But it ain't so :)
As a side question, what is the closest to iPhone's UILabel in the Android world?
A UILabel can contain a text or a graphic. Right now I've been using TextView and ImageView but they aren't anywhere as flexible when it comes to layout as a UILabel
Edit: Making my View inherit from ViewGoup instead, let me add subview..
However, I want to draw in my view. I found that when ScreenView extends ViewGroup, the onDraw function is never called then.
Something like:
CODE:..........
Would paint in yellow my view if ScreenView extends View ; but not if it extends ViewGroup.
How do you draw directly in the view then?
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Sep 6, 2010
What Iīm trying to do is to create a list (using a list view) of items (which are views inflated from the same layout) what must be clickable. At first I thought that all I had to do was to add an onItemClickListener to the ListView so if the used clicked on any of the views that composed this Item the listener would react. Well, I was wrong. Iīve tried a lot of things, including setting focus and focusontouchmode off for each of the views that compose the itemīs view but it still doesnīt work. Any tips here? Can I archive this result? Oh, also ... this list view is in a dialog and the listener is in the activity that builds the dialog.
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Oct 22, 2009
I have a ListView backed by customized ArrayAdapter where each item has 2 LinearLayouts - one I call head, and the other one - body. The body is hidden (gone) until user clicks on the row at which time it slides out. The second click (on the head) will hide the body. However if user clicks on the body it brings another activity. All of this works just fine, here comes the problem.When user presses on body I want a visual indication of the action just the same way as regular list item will flicker an orange background when pressed. I'm not getting this by default since (my theory) the onPress event is intercepted by body's view and not processed by the list item.The first thing I tried was to execute body.setBackground('#ff00ff') (never mind the color) in onPress event. That didn't work since (I suspect) there's no repainting after the call. Then I dig a little bit more and decided to use <selector/>-based background. I defined body_background.xml in drawable folder and assigned that to the body's background property.
There I noticed that background will only change if the even is processed by the list. For example if I set <item android:state_selected="true" android:drawable="@drawable/selected"/> then when I press on the head - the background of both elements (head and body) will change, however when I press on body - nothing. So to summarize my question.how do I change background of the child element in the list item if I assign custom onClick handler to it?
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May 20, 2010
I need to implement a list view with checkbox and each item should be associated with images.
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Mar 22, 2010
How to remove item from a list view? how to reload the list after removal?
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Jan 23, 2009
Not allowing horizontal spacing between grid view item, I am using following for grid view, I don't want horizontal space between grid view item. android:horizontalSpacing="0px"android:verticalSpacing="0px"
By using this there no vertical space between item. But the horizontal space remain there, how to eliminate this horizontal space between grid items.
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Mar 5, 2010
I am working on adding vertical and horizontal scrollbars in a custom drawn View. I have overridden the compute*ScrollOffset, compute*ScrollRange, etc methods and have enabled the scrollbars by called set*ScrollBarEnabled. However, I do not see the scrollbars in my View, even after a call to scrollBy, which according to the documentation calls awakenScrollbars (I assumed awakenScrollbars is not required as the scrollbars do not auto-fade - isScrollbarFadingEnabled returns false).
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Nov 24, 2010
I have defined two views ExampleView1, ExampleView2, ExampleView3 and ExampleView4 in resources. In my Activity I have an empty ViewFlipper. Based on doing some logic I want to add either ExampleView1 and ExampleView2 to the ViewFlipper and show the view. Later I want to add based on internal logic either ExampleView3 and ExampleView4. How do I do this?
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