Android :: ActivityGroup Not Handling Back Key For ListActivity
Sep 29, 2010
I am using an ActivityGroup to spawn multiple activities and switch views from within the same tab in a TabActivity.
When I press the back key this method is called inside my ActivityGroup
CODE:..............
This method allows me to keep a stack of my activities and go back to the previous one when the back key is pressed.
This is working well on all my nested activities, except on a ListActivity where a press on the back key will simply exit the application.
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Feb 22, 2010
how to add add,remove,back buttons in ListActivity.
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Oct 30, 2010
In my application i prompt for password in onResume(), and Before this i have already created view in onCreate() so it is compulsory for user to enter password But if user press the Back key password dialog get disappered and user easily use the application. When dialog is Being shown,if get key event for Back key then i can easily handle this for that purpose i implemented onBackPressed()/onKeyDown() methods of Activity But none get event for this key when dialog is on screen after dialog disappered these methods get event for Back key.
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May 12, 2009
About ActivityGroup or give me some hints on how to use it? I looked at the documentation but I wasn't able to understand how it works...
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Mar 3, 2009
I want to add a MapActivity in an ActivtyGroup. As only single level inheritance is supported, my class can either extend from either MapActivity or ActivityGroup. As far as I know MapActivity is not a part of ActivityGroup. I want an activity to extend MapActivty as well be a part of an ActivityGroup.
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Mar 24, 2010
I need a to create a layout that holds to other layouts. each one of the layout should be populated by a different activity.
I've done some research and came across the fact that I need to implement an ActivityGroup and use it's LocalActivityManager. problem is that I don't understand the View hierarchy in such a situation. a naive attempt to find the view of the parent window (simple findViewById) fails (returns NULL).
I can't find any examples on the web. have anyone done it before?
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Aug 19, 2010
So I have a default searchable Activity in my app, and if I press the search button in simples activities it works. But when I'm in a tab where the content is an ActivityGroup, and not an Activity, the app crashes.
CODE:..............
Even if I add this code in my activityGroup, I'm still crashing :
CODE:.....................
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Aug 23, 2010
I am using an ActivityGroup and when I finish a top-level Activity (e.g. with destroyActivity method) and display one from history, the getCurrentActivity method returns the last Activity - the finished one. I need to access currently displayed activity, which is actually shown.
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Jul 1, 2010
I have one problem using ActivityGroup. I have two activities inside an ActivityGroup and both of them use a menu (overriding the onCreateOptionMenu and onOptionsItemSelected).
Well, the problem is that the second activity in the group doesn't show the menu when I press the menu Key. The first activity works fine showing the menu.
I have this code in child activity:
CODE:...........................
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Jul 16, 2010
I'm trying to give my first steps on working with ActivityGroups. To be more specific, I have a parent activity with a layout containing several buttons, and another layout below them in order to add other activities' layouts by means of the "addView()" method. Well, everything works fine in functionality terms; but I'm experiencing a weird behavior inside the layout where other activities are kind of loaded into. A black line along the top border of the layout plus a slight shadow do appear when I run the application on the emulator. I have tried to play changing the paddings, margins, etc. with no success.
Has any of you experienced such weird behavior?
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Apr 14, 2009
I'm trying to run an activityGroup embedded inside another activityGroup. (Example : an activityGroup inside a tabActivity)
This seems to display properly but throw an exception when i'm trying to display a modal box like an alertDialog.
CODE:............
If childActivity1 or 2 try to display a dialogBox i'm getting this exception :
CODE:......................................
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Nov 23, 2009
I'm extending ActivityGroup class and implemented a custom tabHost and widgets for my app. Can someone shed a light on how are the Activities fife-time inside an ActivityGroup?.
Im getting a weird behavior when using the following code to send a new intent to the current sub-activity, then change tab, and getting back to original tab. (TAB1 -> TAB2 -> TAB1)
CODE:.......
What i see from debug..
onSaveInstanceState() is called on TAB1, then TAB2 is current subActivity, but when going back to TAB1 onCreate() is called.
onCreate() is not called with the same test without using the onNewIntent() described above.
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May 31, 2009
I have 6 options to put in options Menu, but 3 of them are not so important and i want to hide them in submenu. All of my Activities are started from one ActivityGroup which creates Menu on MENU button press. Problem is that when I open SubMenu or Dialog (which is created and displayed by ActivityGroup) my current foreground activity makes onPause, onStop and onDestroy, and when I close this submenu (using "back" key) or dialog (by "ok" button for ex.) I don't have any response (onCreate, onResume) from any of my activities registered in LocalActivityManager.
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Feb 22, 2010
I have a Activitygroup and some activities are part of it.
lets say Activitygroup is DetailsGroup which has a activity by name DetailsActivity.
On certail events DetailsActivity launches another activity ExtraActivity by calling startActivityForResult(intent, 2);
The extraActivity is launched it does its work and before calling finish() of it I am calling setResult(RESULT_OK,mintent);
By doing this I was expecting that the DetailsActivity's onActivityResult() would be called, but instead DetailsGroup activities' onActivityResult() is getting called.
Any idea what changes are required to get DetailsActivity's onActivityResult() called in above scenario?
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Jul 21, 2010
I'll be brief. I have an application with the following Activities Schema:
A (ActivityGroup) | |__
B (Activity Group) | | | |__
C (Activity) | |__ ... (Other Activities) | |__
D (ListActivity) | | | |__
ListView with a custom adapter with two buttons per row
All the Activities shown on the "diagram" are displayed and visible in real time while the application is being executed.
I'm pushing new list elements from C to the ListView in D. And by clicking each row's buttons I'm trying to edit the data of the row by means of a dialog. The problem is when, in the dialog activity, I perform the setResult() and finish(); the D's onActivityResult() is never called, and I do not know why.
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Aug 20, 2009
I have a tab with an activitygroup as the intent of tab1.
My code of the activity(group):
CODE:..................
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May 18, 2009
I have an ActivityGroup containing three embedded Activities (A, B and C). Sometimes I need to "destroy" A and B to start another one, D, and when D is finished, A and B are re-created. Is it possible? If so, how can I do it?
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Oct 11, 2009
I have a tab bar and within one tab want to implement an activity flow (without leaving the tab screen). I tried to get this up with an ActivityGroup and it partly works, but certain commands like the onCreateOptionsMenu must be dispatched to the ActivityGroup child activity manually.
The main issue is that showDialog() in my child activity of the ActivityGroup fails with the following exception:
CODE:.............
How I can get the child activities fully working? I expect this to happen with more of the built-in activity methods and there is not much documentation for the ActivityGroup.
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Mar 30, 2010
I'm trying to make an ActivityGroup which has it's own interface, which should be persistent between Activities.
I have it working for my own Activities. But when I try to launch a 3rd party activity (from it's Intent{action="ACTION_HOME", category="CATEGORY_LAUNCHER"}) I get a java.lang.SecurityException because the Activity I want to start does not have the same UID as the calling Activity. Does anyone knows how to cirumvent this?
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May 27, 2009
I have an ActivityGroup with an embedded TabActivity and another simple Activity.
The TabActivity has three tabs, each one with a ListActivity.
When I try to start a search from a list (calling onSearchRequested()), I get a WindowManager$BadTokenException.
I've tried requesting focus in the list, but the same error occurred.
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Sep 2, 2010
Android device is much slower and have much lower memory compare to PC/server, So what is the best way to handling XML in Android? And I have a set of very complex xml needed to parse. both SAX or DOM will cause too much code. Anybody have good suggestion? I want to make it clean and fast.
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Oct 26, 2009
I'm trying to create an application that has 3 tabs. Under the middle tab should be a ListView. It starts up fine (on the left tab) but when I click the middle tab it crashes.
The other two tabs are static data specified in the main.xml file. But the middle tab, I try to create dynamically. Here's the code from the main onCreate function:
CODE:...............
Instead I appear to get an exception:
CODE:...............
ContactListActivity is defined this way:
public class ContactListActivity extends ListActivity { ...
I get the feeling that I'm supposed to create the Intent with something like Intent.ACTION_VIEW but this is where I get lost. If this is the problem, I could try stuff until it works, but I'd prefer to understand why.
Or is ContactListActivity supposed to override something ?
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Feb 8, 2010
I have a problem with rotation, during my ListActivity is loading data from the network. To do it I use a background thread which recovers data and put them inside an ArrayList. While this thread works, there is Progress dialog activated in foreground. For the rotation I use the method with onRetainNonConfigurationInstance() to save my ArrayList's state. After android calls this method, I call dismiss() on the progress dialog on onStop(). Then the activity is created as new with onCreate(), but it use the getLastNonConfigurationInstance() to recover the ArrayList's state. Now, my problem. If I rotate from portrait to lanscape when the download is terminated and I see the data in portrait yet, everything is ok. If I rotate during progress dialog is showing I have two cases: 1- onRetainNonConfigurationInstance() saves the arraylist fully recovered, the thread terminates and everything is ok. 2- onRetainNonConfigurationInstance() saves the arraylist empty, i think the download isn't finished yet. The onCreate is called and my list is empty, the thread terminates, but i don't see anything in my list. If I am in this case and I still rotate from landscape to portrait now I can see my list full with all the data. Why? Where am I wrong?
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Jun 30, 2009
I create a ListView in my activity and set its ChoiceMode to CHOICE_MODE_SINGLE, I also set its layout to simple_list_item_single_choice. But when i click on it onItemSelected() is never called and getCheckedItemPosition() returns -1. Why? the sample List10.java of ApiDemos uses ListActivity works well which just set the same as I done in my app. Any ideas?
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Jan 13, 2010
I want to create a custom list view in my application. I want it to lay over the top of the application screen, with portions of the screen not filled by the listview showing the underlying application. I've been reading about ListActivity, how it can be started to handle item selected callbacks. I've also read about people simply inserting onClick handlers into the listview as it is drawn. I'm trying to decide the best way to proceed. Is it "dirty" to attach onClick handlers to the rows of a listview? It doesn't seem like the best approach, for instance, it only handles Touch Mode, not the DPAD clicks. This approach doesn't seem like what the architects had in mind. On the other hand, I don't see a good way that I can start a list activity and still have access to all the application variables I need. Do I pass the application in the context and refer back to it from even handlers after casting the context back to it's original class?
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Jul 27, 2010
I know this may be a pretty simple question, but i am having problems trying to find what i am looking for. I have written an application that uses a listview activity. but now that i think more about it, i would like to have other items included to give the status of the app, etc that i just want to be displayed and not scrolled so it wont be entered into the database. does anyone have a good link to an example for this>
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Jan 11, 2010
I have an ListActivity that I wan't to add a logo to at the top above the list but I'm unsuccessful. This is what my layout looks like at the moment.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"> <ImageView android:id="@+id/logo" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <ListView android:id="@android:id/list" android:layout_width="fill_parent" android:layout_height="fill_parent" android:drawSelectorOnTop="false"> </ListView> <TextView android:id="@+id/empty" android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="@string/list_empty" /> </LinearLayout>
Then I add an drawable to the ImageView logo in onCreate. I've managed to show either the ListView or the ImageView but never both of them in the same LinearLayout. Is it possible to add other views together with a ListView?
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Sep 8, 2009
I am using a ListActivity. Each list entry contains an ImageView and a TextView. I have a huge list and has been getting Out of Memory errors once I scroll through a fair amount of them. I figured I need to reduce the size of the images but I am wondering what happens to the objects once the list entry is hidden from view (as i scroll down the list). I have read somewhere that the list entry objects are automatically re-use. But what happens to the drawable images which were loaded into the ImageView? IF the ImageView object is reused, what happens to the binary image? Are they freed automatically? How do I prevent the OutOfMemory exception? I want to do something similar like the Android Market. As one scroll downwards the images are loaded and new entries are loaded. The Markey can have a long list which one can scroll down and all the way back up again without any problem. The only difference being mine throws OutOfMemory Exception. Advice anyone?
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Dec 29, 2009
I have a list Activity 4 which i have extended the BaseAdapter and the getview looks like this.
public View getView(int position, View convertView, ViewGroup parent) {
View row=null;
for(int i=0;i<10; {
row = convertView;
if(row==null) {
LayoutInflater inflater = mContext.getLayoutInflater();
row = inflater.inflate(R.layout.parsed,null); }
TextView id = (TextView)row.findViewById(R.id.id);
id.setText(idvector.elementAt(position));
TextView photo = (TextView)row.findViewById(R.id.photo);....
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Feb 2, 2010
I am having a problem.I want to explain in detail. 1)I am Having an TabActivity with 5 tabs. I loaded content as follows.
CODE:............
And the Problem is If i want to start activity which is not specified in tabhost in above Java code,it is going out of tabactivity. ie.,It is not coming in tabactivity.
2)But i want to have all the activities under tabActivity.
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