I want to have more than one expandable list within a layout. It appears that an expandable list in a custom layout must have an id of "@id/android:list". So, how could I have more than one if they would need to have the same id?
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I could not figure out how to implement two basic functionalities with the expandable lists: 1. The onClick for the child 2. Using linear layout for the children, so that I can have multiple clickable items in same row under the parent item
Can somebody help me with some sample code for the above?
I am using a simple expandable list that is populated by two arrays ( group array for the groups and a multi dimensional children array for the child). The arrays are built dynamically in the program and some group items have more children than others. So I end up defining the highest number as the array size for the multidimensional child array. After populating the child array, some positions are left null, as there are no values for those group items (explained above). When I associate this with the expandable list adapter, the getChildView method throws a nullpointer exception when it comes across a position in child array that does noto have value. I have two questions:
1. Can I make the base adapter skip the shildview method if the value in that child is null? The current implementation of getchildView method has to return a view and even if I suppress the nullpointer exception, it adds a blank element in the child position in the list.
2. Is there a better way of associated multidimensional arrays that are populated at run time? The current set of examples only use hardcoded string array values. Even the cursor adapters examples use very basic setup.
How to set a few lists in one layout include their own data from DB?
Here is source code about set list in Android guide. List id is @android:list why the id must be android:list?, may I use my own id? If I can, how to set lists to main layout including their own data.
CODE:........
I want to set lists like this :
CODE:..................
I want to set some lists in one layout, but I found it's only recognize the first <ListView . how to write xml file ?
View 4 Replies View RelatedI want to display contact information in a custom layout. My app lets the user select a contact, then I retrieve key pieces of info on that contact (phone #'s, email addy's, etc). I want to display them to the user so they look grouped logically. Sort of like a series of tables, so phone numbers, then email addys, then organization, etc.
I have a table format that I've been using in a different part of the app where I know the exact number of rows I'm adding and I have defined styles for the rows already. I want to reuse those styles for this data, but android sdk won't allow for you to set the style attribute programmatically.
I could create the tables in code and set all the attributes the same as in my defined styles, but it seems like a lot of extra coding.
i was wondering if there was a way to have to separate contact lists, i recently switched to the moto Droid (from a blackberry), i run a business but have only the one phone and would like to keep my family & friends contacts separate from my business contacts.
View 5 Replies View RelatedI have a contact list from GMail. I have a contact list named Corporate (whatever that is). I have a contact list from my ActiveSync business account (Exchange server). I have a contact list from Phone.How can these be reduced to one? Certain programs (Better Cut) see contacts from one list but not others.
View 1 Replies View RelatedI'd like to dedicate this thread specifically to the evaluations and feedback for various Todo's, Todo Lists, Tasks, Task Lists, Lists, etc.I'd like to keep this separate from Notepads as I've dedicated that to another thread ( Notepads and Notepad's that sync - Evaluations and Reviews ).Doing a search for Todo's and Tasks on the Android Market comes up with so many results. Rather than downloading and trying out so many, I'd like to know which ToDo's and Task Lists, etc. are recommended.I've been searching for ToDo lists and Astrid is frequently mentioned. Other sync or link to Google Tasks or sync with Google as well.Other ToDo / Task Lists? What are some ToDo / Task you've downloaded and/or experimented with? Please comment on other such productivity Apps. Please indicate if they
1) Offer Multiple Lists
2) Folders
3) Sync
4) Email
5) Offer other unique features
I have an Android app that has both CursorAdapter based ListViews (backed by sqlite) as well as custom BaseAdapter based ListViews which are built on the fly from JSON pulled down from a server.
The data displayed in both is identical - an image and a couple of TextViews. My Cursor-based ListView has 3000 rows, the JSON-based ListView has about 30. However, scrolling down the list is significantly faster for the Cursor-based adapter. For the JSON-based lists, the data is all fetched before the rows are made visible. Images for both types of lists are downloaded on-demand.
I have both ListViews configured identically - both with fastScrollEnabled, scrollingCache and smoothScrollbar set to true.
I'm looking for leads on how to go about trying to figure out what's going on here and to potentially fix it so that the JSON-based ListViews as as fast as the Cursor-based ones.
I'm trying to build a layout where some shapes will popup every 2 seconds. If the user will click one of these shapes, they have to disappear.
What is the correct way of doing this? I thought about a thread, but i missed out.
Here's my code at the moment (is not working):
CODE:..................
I want to create a multiple line editview to enter in some notes. I want the text aligned top left and 4 rows. How do I create that in layout xml file. Assume I am using a linearview.
View 1 Replies View RelatedIs there a way to do a linear layout with multiple lines? I want to lay out a variable set of buttons with variable labels, so I'd like to use a layout that works as a simple horizontal LinearLayout, but with multiple lines, so the buttons spill into a second (or third) line if they don't fit on the first one.
View 3 Replies View RelatedI want to display text such that it would be like:
TITLE 1.1
text about title 1.1
TITLE 1.2
text about title 1.2
TITLE 2.1
text about title 2.1
And so on
It would be a scrolling windows, but another problem is text could be lengthy and could span multiple lines. What do you recommend i should breakup my layout with. The length will be more then the screen height so i need scrollbars. Plus need to keep title bold.
Basically i would be printing this text from a String Array. Is it possible to display it directly from arrays or i can also work with simple strings but need to know how should i breakup my layout. like scrollview -> table layout or what?
I need to load several ImageViews into a layout. The ImageViews are used to show a rating using 'star' icons. The number of stars (i.e. the rating is determined during loading by reading a configuration file.
The ImageViews are sitting inside a RelativeLayout layout.
Currently I am using something like this:
CODE:........
My quesions are:
1) Is doing the loading dynamically (not using an xml) is the 'right' way of doing this ?
2) If it is, how do I make the stars display in a line, currently they get placed one on top of the other.
I've been attempting to use the <include> tag in some layouts and it seems that these are of limited use because of the flat namespace of the R.id.x approach.
Suppose I have a layout (attribs and xml namespace decl omitted for clarity).
CODE:.......
Now in my java code I have a conundrum. I am not able to identify each individual instance o f the children included layouts root view. In the include tags I can replace the root id with "row1" and "row2" so I can find the individual linear layouts using findViewById
eg:
CODE:.........
However, I can't easily access the two instances of the TextView which are children of row1 and row2 because all I have to play with is the single id "text"
ie:
CODE:..........
In this case, which instance (row1.text or row2.text) does this refer to, both of them, or none?
I guess I would need to use another means of accessing the children of row1 and row2.
I am trying to develop an application for which I want multiple screen support. I have read the Android article on Best practices for Multiple Screen Support. As per the article we have to follow 3 important things
1. Mention support for different screen sizes(large, medium and small) and any density in AndroidManifest.xml.
2. Place images of 3 dpi's (120, 160, 240) in 3 folders res/ldpi, res/mdpi and res/hdpi.
3. In layout's the dimension should be mentioned in "dip" units. Then Android will take care of the scaling on its own.
I have implemented all these points in my project. The images are picked up correctly from the appropriate folders. But the arrangements of the controls in not same.
e.g. I ran the app on three emulators
1. Resolution 240*320 dpi 120.
2. Resolution 240*320 dpi 160.
3. Resolution 240*320 dpi 240.
(All the emulator have same resolution but different density.)
The problem is the position of the controls is not same on all the three emulator. As per my understanding if the android:layout_marginLeft and android:layout_marginTop are mentioned in "dip" then this problem should not occur. As the density of the emulator increases the controls get placed more towards the right. Is it absolutely necessary that I provide layouts for all combination's of screen dimension and density even if the layout is same for all the devices?
Images:
https://docs.google.com/leaf?id=0By3GYC3k5AMDNzUwNjkwMWEtOGQzZC00MjQ0LWE2OTgtYjFhYzZmM2ExOGVl&hl=en&authkey=CLOEsZsI
I am trying to develop an app for which I want multiple screen support. I have read the Android article on Best practices for Multiple Screen Support. As per the article we have to follow 3 important things:
1. Mention support for different screen sizes (large, medium and small) and any density in AndroidManifest.xml.
2. Place images of 3 dpi's (120, 160, 240) in 3 folders res/ldpi, res/ mdpi and res/hdpi.
3. In layout's the dimension should be mentioned in "dip" units. Then Android will take care of the scaling on its own.
I have implemented all these points in my project. The images are picked up correctly from the appropriate folders. But the arrangements of the controls in not same. e.g. I ran the app on three emulators 1. Resolution 240*320 dpi 120. 2. Resolution 240*320 dpi 160. 3. Resolution 240*320 dpi 240. (All the emulator have same resolution but different density). The problem is the position of the controls is not same on all the three emulator. As per my understanding if the android:layout_marginLeft and android:layout_marginTop are mentioned in "dip" then this problem should not occur. As the density of the emulator increases the controls get placed more towards the right. Is it necessary that I provide layouts for all combinations of dimensions and density i.e. in layout-small, layout-large, layout- medium, layout-long,layout-notlong?
I am currently trying to make my app compliant with all screen sizes / api levels. I have this mostly working, however there is 1 issue i cannot resolve: Layouts in the "layout-hdpi" folder are used by and any phone on 1.5 (API level 3). - Which i dont want, i want API level 3 phones to use the "layout" folder. So to resolve this I added "-v4" onto the folder also, this works, the folder is no longer used by 1.5 phones. However, now the folder is also not used on API Level 6 phones, for example the droid. The droid only picks up the folder if i name the folder: "layout-hdpi-v6". (Also if i put "-v3" on a folder, the layout folder is not used by API level 4 phones) My understanding is that the -v<api level> qualifer allows you to exclude phones on an API level that is too low, so -v4 should mean that the folder will be used by all phones on API level 4 and above. I am finding a folder is only used for that specific API level. Has anybody else ran into this same issue? And does anybody know of any possible solutions?
View 3 Replies View RelatedI have a button which I want to occupy 75% of the screen:
On a 480x800 resolution screen this would be 360 pixels wide.
On a 280x320 resolution screen this would be 210 pixels wide.
How do I go about specifying this in my layout XML file?
I understand there is a DIP unit of measurement, but does that also work to scale screen images for resolutions? What DIP measurement would I use for this, and do the images need to be saved at 160dpi.
I have created a custom view by extending Relative Layout and it looks like this: The layout for the view:
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout android:layout_width="wrap_content"
android:layout_height="wrap_content" android:gravity="center_horizontal">
<ImageView android:id="@+id/type_picture_preview"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:src="@drawable/type_picture_noimage" android:layout_alignParentRight="true"
android:paddingTop="15dip" android:paddingRight="15dip" />
<ImageView android:id="@+id/type_picture_delete"
android:src="@drawable/type_picture_delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true" />
</RelativeLayout>
</merge>
I am struggling to get two or more layouts on a single line.
I have read the Android UI trick 2 on Android developers, which tells people how to include a layout in another layout file multiple times, and give these included layouts different id. However, the sample here is overwriting the layout id, not the id of the views IN this layout. For example, if the workspace_screen.xml looks like this: And I include it three times in another layout file. Do I end up with three TextViews with id firstText, and another three with secondText? Isn't there an id collision? And how do I find the secondText TextView in the third included layout with findViewById? What should I input in the findViewById method?
View 1 Replies View RelatedAny insights/pointers regarding creating a layout like this. I have wasted quite a bit of time on this. I want to create a vertical linearlayout which has multiple ExpandableListViews separated by TextViews.
CODE:.........................
I tried the following approaches but each of them has one shortcoming or the other:
1. Add TextView and ExpandableListViews to a linearlayout. The problem with this approach is that LinearLayout by default is unscrollable.
Adding the LinearLayout to a ScrollableView creates even more issues because ListViews handle their own scrolling behavior.
2. I tried using a single ExpandableListView to model the above layout but the problem is that setGroupIndicator applies to the entire ExpandableListView, not a specific group.
My application will have two layouts, one for large screens and one for normal. For testing I'm working with one phone (800x480 240dpi) and one tablet (1024x600 240dpi) but both are detected as large screen hdpi and long aspect ratio, so I'm not able to assign different layouts.
The only approach I think that can work is to create layout-large and layout-normal, get the resolution and programmatically set the layout folder. Is that possible?
I am using a linear layout to draw a scalable background in my app. I am then defining multiple imageviews inside the linear layout, all of which are PNGs containing a transparency layer. I am wanting to overlay these transparent imageviews on top of the background. My issue is that only the first defined imageview shows on top of the background, any subsequent imageviews do not appear.
CODE: Note that imgSen1 appears properly with transparency overlaid on the background. imgSen2 does not appear. If I define imgSen2 first, and imgSen1 second, imgSen2 then appears properly, as if only the first defined imageview can be seen. I would like to have multiple imageviews with transparency overlaying the background.
<LinearLayout
android:layout_width="627dp"
android:layout_height="436dp"[code]...
I'm creating a game where there's a screen that, for the most part, is shared by four different activites - but a key portion of the screen will be completely different, depending upon which activity is active. Basically, on the left will be an image of the player and along the bottom there will be a row of buttons (let's say for Armour, Weapons, Magic, Skills). This leaves the top-right portion, which will need to dynamically change to represent the button pressed. (So, one moment the top-right portion is the armour selection activity, and the next it's the weapon selection activity, and so on.)
Is this possible? Can I have a layout within a layout and dynamically point the nested layout at a (nested) layout.xml of my choosing? Or, am I looking at just duplicating most of the layout four times (for the four different activities?) Or, am I going to be looking at linking the four activities to a (the top-right) view component, and then having to dynamically construct all of *that* view's child views based on the currently active activity? Well, that's about as much sense as I can make this question make.
I need to define the structure of ExpandableListView in xml file manually. Is there any guide or example of doing this?
View 1 Replies View RelatedI'm using BaseExpandableListAdapter, and there is a drop-down button (looks like an arrow) on the left side for each parent item to indicate that you can expand that item to view child items. The question is: How can I change the properties of that drop-down button such as its position? I basically want to move it a bit lower in each parent item.
View 2 Replies View RelatedI amm try to replicate the inbuilt contact app. how can i have a + button to add multiple phone and email? also i want the fastscrollview to be enabled in it
View 1 Replies View RelatedI am trying to compose a list with some items expandable and some single items. I wish to have it so that when either a single item or expandable list child is clicked, I can call an intent based on the text of the item.I suppose expandable lists would work, but is there a way to set items in an expandable list so that they don't have the expandable list icon? Should I use something other than a string array?What is the best way to do this?
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