Android : Can't Create Multiple ListViews In One Activity
Mar 23, 2009
I want to have multiple listviews in my activity. Every listview will have a different adapter and every item in the listview must be clickable (other actions for every listview).
So my problem now is that I can't create multiple clickable listviews. I have one listview like this <ListView android:id="@android:id/ list".. and the other listview looks like this <ListView android:id="@+id/ flightList"
The first listview looks like this in my activity hotelList = (ListView)findViewById(android.R.id.list);
the second: listView = (ListView) findViewById(R.id.flightList);
I can click on the first list and it does what it has to do, but i cant do anything with the second list.. probably because it hasn't the android:id/list declaration. does someone knows how I can solve this problem or other suggestions how I can get multiple lists in 1 activity.
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Apr 5, 2010
I want to have multiple listviews in single activity. But only one listview should be displayed at one time. The listviews will be loaded dynamically. So, how can I fill all the four listviews at the same time and display only one?
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Oct 29, 2010
I have been trying to get a specific layout for more than two days now and really struck with it, what am trying to achieve is: To have a layout like the following
LISTVIEW A
VIEW
LISTVIEW B
VIEW
LISTVIEW C
(VIEWS are basically for headers) Can any one help to sort out this task?
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Apr 5, 2010
I want to have multiple listviews in single activity. But only one listview should be displayed at one time. The listviews will be loaded dynamically. So, how can I fill all the four listviews at the same time and display only one.
If anyone knows the solution then please share it over here. I hope to get a quick response.
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Nov 7, 2010
I am not very familiar with android coding so try to help me on a easy way.
The problem:
I have 2 Listviews and a onClick event handler.
How can i find out on which listview the user currently clicked?
public void onListItemClick(ListView l, View v, int position, long id) {
'Approach: if listview1 is clicked then FUNCTION1() else FUNCTION2()'}
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Feb 19, 2010
I want to create multiple instances of an activity in the same process. Should I use FLAG_ACTIVITY_NEW_TASK flag like the code below?
CODE:...............
This code is executed in class A to create another instance of activity A.
This question, will this code create another task? As I understand is a process can only have one task. Does it mean the two activities will exist in different tasks? That's what I want. I want the two activities to be in the same process.
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Jul 1, 2010
I was wondering is it possible to create multiple instances of a single Activity in Android?
I currently start my own inCall screen for a Voip Test by using the following code...
This allows me to start the Activity fine. However when I call it for a second it just returns to the Activity already created rather than creating a new Activity and placing it on the stack.
I would like to be able to create the activity multiple times so that I have two or 3 Activities on the stack and the user can switch between them, using Home, Back buttons etc... Is this possible and if so what am I doing wrong?
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May 15, 2010
I am writing a software that i have to drill down on content a lot. For example when the program starts a listview is displayed. When user clicks on an item, then a second listview must be displayed. For example:
Select Continent > Select Country > Select State > Select City > Select Address
What is the best way to do this (less memory, faster, easier to code etc)? To create multiple listviews with multiple adapters? Or 1 listview with multiple Adapters? Lists are loaded from an external XML File.
So far i am creating a new adapter and setting it to the listview. How do i create a second listview and after clicking on 1st listview displaying the second one, with animation. Any examples? Extend my class to ListActivity or Activity?
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Aug 5, 2010
I have a ListView on my ListActivity and I'd like the rows of the ListView to be 1 of 3 different layouts. The first item in my list is always going to use layout A, the second item in my list is always going to use layout B, and all subsequent items are going to use layout C.
Here is my getView function: Code...
R.id.label1 and R.id.label2 are TextViews on R.layout.layout_A. However, txtLabel1 and txtLabel2 are null after trying to set them. Why?
I stepped through this code in the debugger and it inflated the correct layout (R.layout.layout_A) and fell into the correct case below to set the R.id.label1 and R.id.label2 text. Also, if there is a better way to do this, please let me know.
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Apr 4, 2010
I have a RelativeLayout with different elements. I was planning to have two ListViews on it, but I have noticed there are some problems with scrolling. Since each ListView only shows a maximum of 5 rows should I try to make some kind of custom adapter to merge those ListViews? Or is it better to replace the ListView with a LinearLayout/RelativeLayout and add the rows as I get them manually? (like the first answer in here: http://stackoverflow.com/questions/1778485/android-listview-display-all-available-items-without-scroll-with-static-header ).
Which should be the proper way on doing this? or is there another way? Also, each row will have an OnClickListener.
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Mar 16, 2009
So the situation is this, I have a ListView that is embedded in two LinearLayout ViewGroups to form a screen. BaseAdapter.get View() (the implementation of the ListAdapter) is typically called n times (where n is numElements) to render the screen. The problem I have is this set of calls is being repeated for every ViewGroup that the list is contained in...So for a Layout like this:
-LinearLayout --Linearlayout ---ListView
The adapters get View() is being called n*3 times (3 = 1 for the parent LinerarLayout, one for the child LinearLayout and one for the List itself).
This is obviously a problem when the items in the List are expensive to build (even with recycling).
So I'm looking for some guidance on this, as the documentation doesn't seem to note this behavior from what I can see.
A small, basic example of the source is located on my post here http://www.anddev.org/listview_getting_rendered_multiple_times-t5290.... with more details Oswell as a ready made eclipse project(also attached below) if anyone is keen to try it out.
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Feb 2, 2009
I am trying to launch an activity from another activity .. Within the com.android.SingleLauncher..
I have activity launch code as ..
CODE:...........
I have set the android:multiprocess="true" in the AndroidManifest.xml of TargetSL I don't seem to see the multiple instances of TargetSL, which i am expecting ..
All i see is 2 process, where i was hoping to see an instance of TargetSL, for each launch that was invoked by the singleLauncher!
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Oct 18, 2010
I have developed an application which en-composes list views and posted that .apk file in my htc device, the design and alignment everything works fine,but the problem When i am testing in various devices such as Morotolo Droid,Nexus Devices the alignment of Listviews goes wrong, so i planned to use the Layout folder as layout-hdpi,layout-ldpi, and layout-mdpi, for that i changed my manifest file as
<supports-screens android:largeScreens="true"
android:normalScreens="true" android:smallScreens="true"
android:anyDensity="true" />
Is it right putting android:anyDensity="true",also i used dp instead of dip. I went through this url, but still am not able to get a clear idea in this
http://developer.android.com/guide/practices/screens_support.html. so friends pls tell me(help me) to get clear idea in this and tell what mistakes i have doing. This is my main page xml code frnds.
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost" android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/background_retinav2">
<LinearLayout android:layout_gravity="center" android:foregroundGravity="bottom" android:background="@color/white" android:id="@+id/rl_1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal">
<ImageView android:paddingTop="3dp" android:id="@+id/starthideimage" android:layout_width="30dp" android:layout_height="35dp" android:src="@drawable/newback" />
<HorizontalScrollView android:paddingTop="8dp" android:id="@+id/gv"
android:layout_width="wrap_content" android:layout_marginTop="0dp"
android:layout_height="wrap_content" android:background="#ffffff"
android:scrollbars="none" android:layout_weight="1" android:foregroundGravity="bottom">
<LinearLayout android:id="@+id/san_tag" android:layout_width="wrap_content" android:layout_height="wrap_content">
</LinearLayout>
</HorizontalScrollView>
<ImageView android:paddingTop="3dp" android:id="@+id/Endhideimage" android:layout_width="30dp" android:layout_height="35dp" android:src="@drawable/newforward" />
</LinearLayout>
android:id="@android:id/tabs"
android:gravity="bottom"
android:layout_gravity="bottom"
android:listSelector="@color/gray"
android:layout_width="fill_parent"
android:layout_height="wrap_content" /> </TabHost>
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Aug 16, 2009
I want to show many listviews in one activity. Something like
Textview Listview TextView Listview ..........
Every listview has different type of adapter. For this, I made the activity class like:-
CODE:........................
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Mar 22, 2010
Can I have two ListViews on a single ListActivity? I have built the xml file easy enough, but the code around ListActivity, setListAdapter(), getListView() and the like, all seem to be designed around one ListView per activity. How to get 2 ListViews in one screen?
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Mar 22, 2010
I have a ListView that is populated using an XML file. However, I want each item, when clicked, to start a new Activity related to that item. I understand how to use OnItemClick to start a Toast that shows the selected item's text. However, since the ListView is populated from an XML there is not a specific Id for each item in the list. So, how would I associate an Activity with each item in the ListView when the items do not have Ids?
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Mar 8, 2010
I am just getting started with the Android SDK and I had a quick question. I am trying to set up a ListView with a rectangle of color on the left and then a bit of text for each row. I also want to make it so I can click each entry in the list and open a new activity to display some information (similar to the contact list).
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Aug 16, 2010
Are there design guidelines to help decide if an application with multiple views should be designed with multiple activities or just one activity and control the back button itself.
I've tried both. My most complex applications using one activity per screen. However, now that I'm successfully written an app with just one activity and handling the back button myself, I don't see any compelling reason to use multiple activities. The one activity application is much simpler and more straightforward.
What advantages of multiple activities am I missing?
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Mar 3, 2010
So I have an app with Activity A. The layout on the activity is dynamic genearted. So it's possible that on Activity A a user hits a button that goes to "A" and the new page looks different, then a user clicks another button to go to "A" again. Now I have 2 Activities in the history stack. A, A, and currently on A. Is it possible that if a user clicks a button that the whole Activity stack is cleared in a scenario such as this?
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Apr 27, 2010
When a TabWidget is using intents to designate the target Activity for each tab, is there any special handling of those Activities on the Activity Stack outside of the default operation? For Instance, if my app has tabs A, B, and C, and I click them in this order--A, B, A, C, A, B--how will the Activity stack change? My understanding of the default operation, if startActivity() is called each time on the intent, would have the Stack keep loading up new instances of the activities: A, AB, ABA, ABAC, ABACA, ABACAB It's hard to believe that's how it works though... Seems like it would be a waste of resources and could be endless. Can anyone tell me how this will actually work?
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Dec 24, 2012
I am working on developing an app and I am not sure when should I use a new activity and when should I update the existing view.
For example, lets say I have a view that shows a multiple choice question.Now, when the user selects his choices and clicks on say "Evaluate", I want to show the same question view but along with the right answers and explanations for each option. So does that mean, I should send an Intent upon a click on Evaluate or I should just update the view (i am not sure how)?
If I send an intent and show a new screen, how can the user go back to the next question without displaying the answers? If I don't create an new activity, how can I update the existing view that is already displayed?
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May 6, 2009
In my application, i want to create multiple tabs. For example, i have a button on clicking which should create one more tab,(just like Mozilla browser). I searched on Internet as well as Android Documentation. but did not get any clue...
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Nov 7, 2010
How to create multiple View in one screen?
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Jun 4, 2010
I created multiple ExecutorService instances in my code, usually each UI page has one ExecutorService instance. Each ExecutorService instance will execute some http get request threads.
CODE:......
Is it OK to do that?
The problem I met is that sometimes the http get requests got response code -1 from HttpURLConnection getResponseCode() call. I don't know whether it is caused by multiple threadpool instances.
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Sep 4, 2010
I have 1 activity, but would like to have multiple context menu's for different UI components.
For example, I have a ListView which will react to:
CODE:...................
How can I create another context menu for the onClick event for an ImageView I have?
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Jul 12, 2010
I know I cannot create two MapViews in a MapActivity. And I cannot create two MapActivities in a process. Is there a work around that will enable me to display two mapviews side by side?
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Oct 12, 2010
i want to create a bitmap / image which has many images like "Collage" which has more then one images in a single picture. I have stored all my images in a grid view but now i want to create a single image from all those images. And even i want to make few images click able so what can be the road map to do this ? any sort of help / example will be helpful. search for a for collage image image in google . one can see what it is exactly.
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Oct 19, 2010
I'm trying to create a title bar that is the same throughout my application and have been creating layouts like this for each of my activities:
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<include layout="@layout/title_bar_layout" android:id="@+id/title_bar_layout" />
<include layout="@layout/main_body" android:id="@+id/main_body" />
</LinearLayout>
main_body.xml:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_table" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:stretchColumns="1"
android:orientation="vertical">
</TableLayout> Code...
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Feb 20, 2013
I want to make an application which allow user to add multiple recipient. Token for all recipient should be created and if i select any token and press back key,it should be deleted.
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Jun 21, 2010
Is it possible to create and activate an apn programatically on android? Is it also possible to activate more than 1 apn at the same time?
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