[android-developers] Re: Back button problem in android

2011-09-14 Thread Vance Turnewitsch 

First, I think you are asking a user question. This is a developer
forum. I would suggest looking for the android market help forum.
http://www.google.com/support/forum/p/Android+Market/label?lid=1d903020a35e806ehl=en.
Or contact the developer of the app. Also for the time being,
developers design their apps in different ways. You may not be able to
go back to your activity; but maybe should try accessing recent apps
with your device and choose your app.

Good luck
Vance
On Sep 14, 7:43 am, pramod shirsath shirsath.pra...@gmail.com wrote:
 when i click on androids  back button it stops whole activitybut i
 want to come back to previous page..can anyone help me to
 solve this problem...

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Re: [android-developers] Re: Back button problem in android

2011-09-14 Thread kaushik p 
its very simple , in back button only the finish(); is executed . It means
that the existing activity is canceled . If that activity leads to the last
GUI screen of you application then the application gets closed . Try to
override it .
On Wed, Sep 14, 2011 at 4:52 PM, Vance Turnewitsch 
betweenthehi...@gmail.com wrote:


 First, I think you are asking a user question. This is a developer
 forum. I would suggest looking for the android market help forum.

 http://www.google.com/support/forum/p/Android+Market/label?lid=1d903020a35e806ehl=en
 .
 Or contact the developer of the app. Also for the time being,
 developers design their apps in different ways. You may not be able to
 go back to your activity; but maybe should try accessing recent apps
 with your device and choose your app.

 Good luck
 Vance
 On Sep 14, 7:43 am, pramod shirsath shirsath.pra...@gmail.com wrote:
  when i click on androids  back button it stops whole activitybut i
  want to come back to previous page..can anyone help me to
  solve this problem...

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ThanksRegards
Kaushik Pendurthi

http://kaushikpendurthi.blogspot.com/

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[android-developers] Re: Back button problem in android

2011-09-14 Thread Indicator Veritatis 
Overriding the Back key is usually a bad idea. Even though most users
are not technical enough to understand what it means to call
'finish()' on an Activity, they do get used to what it means in
practice: the Activity is removed from the Activity stack and
'destroyed'. Be VERY careful about going against this expectation.

On Sep 14, 2:58 pm, kaushik p kaushiks...@gmail.com wrote:
 its very simple , in back button only the finish(); is executed . It means
 that the existing activity is canceled . If that activity leads to the last
 GUI screen of you application then the application gets closed . Try to
 override it .
 On Wed, Sep 14, 2011 at 4:52 PM, Vance Turnewitsch 



 betweenthehi...@gmail.com wrote:

  First, I think you are asking a user question. This is a developer
  forum. I would suggest looking for the android market help forum.

 http://www.google.com/support/forum/p/Android+Market/label?lid=1d9030...
  .
  Or contact the developer of the app. Also for the time being,
  developers design their apps in different ways. You may not be able to
  go back to your activity; but maybe should try accessing recent apps
  with your device and choose your app.

  Good luck
  Vance
  On Sep 14, 7:43 am, pramod shirsath shirsath.pra...@gmail.com wrote:
   when i click on androids  back button it stops whole activitybut i
   want to come back to previous page..can anyone help me to
   solve this problem...

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 --
 ThanksRegards
 Kaushik Pendurthi

 http://kaushikpendurthi.blogspot.com/

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Re: [android-developers] Re: Back button problem

2010-12-09 Thread YuviDroid 
So...if you have 2 items in your listview and you delete one...and call your
method that reloads the list you get 3 items instead of 1?
Probably you just have to empty the list before re-adding the items that are
in the db.

On Thu, Dec 9, 2010 at 4:53 AM, pramod.deore deore.pramo...@gmail.comwrote:

 Hello , Now I had place the code that loads data from the database in
 a function and called that function when user hit the delete button .
 But now record gets deleted, but changes are not visible properly.
 (Properly means suppose there are 2 records and if I delete one record
 then at this time it shows me 3 records i.e 2 earlier and one after
 removing one record out of that 2 But actually one record gets
 successfully deleted. When I restarts the application and see the
 record then only one record it shows.)  Then how to refresh this list
 view screen?

 On Dec 8, 4:47 pm, Kostya Vasilyev kmans...@gmail.com wrote:
  Also, don't do this:
 
  startActivity(getIntent());
 
  This launches a new activity just like the current one.
 
  If you need to keep the current activity and update the UI with new
  data, just put that code in a function and call it when necessary.
 
  -- Kostya
 
  08.12.2010 14:31, pramod.deore пишет:
 
 
 
   Thanks Kostya for your suggestion and link.
 
   On Dec 8, 4:27 pm, Kostya Vasilyevkmans...@gmail.com  wrote:
   Pramod,
 
   Move the code that loads data from the database from onCreate to
 onStart.
 
   See this for an explanation:
 
  http://developer.android.com/guide/topics/fundamentals.html#actlife
 
   ( scroll down to see a very useful flowchart )
 
   -- Kostya
 
   08.12.2010 14:08, pramod.deore пишет:
 
   Hi everybody,
 In my application I am displaying list. I have created
   ContextMenu. In that there are options like add,remove,back,etc...
 Now when I select Remove option then  I call method
   deleteRecord(), which  delete that list record from database. After
   that I call method - startActivity(getIntent());  Because of this
   method activity restarts and list changes are instantly visible to
   user because in start method I had write code that display the list
   like.
   public void onCreate(Bundle savedInstanceState)
 {
 super.onCreate(savedInstanceState);
 try
 {
   sampleDB =  this.openOrCreateDatabase(SAMPLE_DBNAME,
   MODE_PRIVATE, null);
   Cursor c = sampleDB.rawQuery (SELECT RoomName,
   SwitchFullName FROM SwitchTable ORDER BY RoomName,null);
   int count = c.getCount();
   System.out.println (Total number of records are+count);
   if (c != null )
   {
   if  (c.moveToFirst())
   {
   do
   {
   roomName =
 c.getString(c.getColumnIndex(RoomName));
   switchName =
   c.getString(c.getColumnIndex(SwitchFullName));
   System.out.println
 (roomName+:+switchName);
  
 results.add(roomName+-+switchName);
   }
   while (c.moveToNext());
   c.close();
   }
   }
   this.setListAdapter(new ArrayAdapterString(this,
   android.R.layout.simple_list_item_1,results));
 }
 catch (SQLiteException se )
 {
   Log.e(getClass().getSimpleName(), Could not create or
 Open
   the database);
 }
 finally
 {
   //sampleDB.close();
 }
 registerForContextMenu(getListView());
 }
   Now suppose I have list like this
   Hall - Fan
   Kitchen - AC
   Bedroom - tv
   and suppose I delete record no 1 then list display as following
   Kitchen - AC
   Bedroom - tv
   It looks perfectly well. But suppose I press the back button then
   list is again display as
   Hall - Fan
   Kitchen - AC
   Bedroom - tv
   Actually first record is deleted succesfully, but though also it is
   displayed when I press back button. How to avoid this problem?
   --
   Kostya Vasilyev -- WiFi Manager + pretty widget --
 http://kmansoft.wordpress.com
 
  --
  Kostya Vasilyev -- WiFi Manager + pretty widget --
 http://kmansoft.wordpress.com

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Check out Launch-X http://android.yuvalsharon.net/launchx.php (a widget to
quickly access your favorite apps and contacts!)

Re: [android-developers] Re: Back button problem

2010-12-09 Thread shareem sharif 
nvm ill get back at you later


On Wed, Dec 8, 2010 at 9:04 PM, pramod.deore deore.pramo...@gmail.comwrote:

  i dnt no how did u mail me

 Did I?

 On Dec 9, 9:47 am, nithya nataraj nithyan...@gmail.com wrote:
  hi,
  i am not android developer even i am learinig android like u and working
 on
  a application
  i dnt no how did u mail me
  tats k
  i no a bit abt database , i thnk ur printing these contents in logcat
  dnt do tat ,check in cmd prompt  u can get wer  is the mistake

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Re: [android-developers] Re: Back button problem

2010-12-09 Thread shareem sharif 
your on the list thats how i e-mail you

On Wed, Dec 8, 2010 at 9:09 PM, shareem sharif mrshotki...@gmail.comwrote:

 nvm ill get back at you later


 On Wed, Dec 8, 2010 at 9:04 PM, pramod.deore deore.pramo...@gmail.comwrote:

  i dnt no how did u mail me

 Did I?

 On Dec 9, 9:47 am, nithya nataraj nithyan...@gmail.com wrote:
  hi,
  i am not android developer even i am learinig android like u and working
 on
  a application
  i dnt no how did u mail me
  tats k
  i no a bit abt database , i thnk ur printing these contents in logcat
  dnt do tat ,check in cmd prompt  u can get wer  is the mistake

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Re: [android-developers] Re: Back button problem

2010-12-09 Thread shareem sharif 
no no i want to know if you guys are ganna make something like the ipad

On Wed, Dec 8, 2010 at 8:47 PM, nithya nataraj nithyan...@gmail.com wrote:

 hi,
 i am not android developer even i am learinig android like u and working on
 a application
 i dnt no how did u mail me
 tats k
 i no a bit abt database , i thnk ur printing these contents in logcat
 dnt do tat ,check in cmd prompt  u can get wer  is the mistake

 --
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[android-developers] Re: Back button problem

2010-12-08 Thread pramod.deore 
Hey YuviDroid Thanks for reply,
Actually I am not calling new activity. In my activity's onCreate ()
method I am showing the list. In the same activity I am deleting list
record But because display logic of list is in the onCreate() method
of same activity therefore If I call startActivity(getIntent()); then
list updates instantly. and If don't call startActivity(getIntent());
then record is deleted but list is not updates instantly.

Now I want update list instantly.

On Dec 8, 4:15 pm, YuviDroid yuvidr...@gmail.com wrote:
 Can't you just refresh the listview instead of creating a new Activity?
 If you instead really want to create a new one, before calling
 startActivity() call finish(), so that pressing back will skip that old
 list activity.

 On Wed, Dec 8, 2010 at 12:08 PM, pramod.deore deore.pramo...@gmail.comwrote:



  Hi everybody,

             In my application I am displaying list. I have created
  ContextMenu. In that there are options like add,remove,back,etc...
             Now when I select Remove option then  I call method
  deleteRecord(), which  delete that list record from database. After
  that I call method - startActivity(getIntent());  Because of this
  method activity restarts and list changes are instantly visible to
  user because in start method I had write code that display the list
  like.

  public void onCreate(Bundle savedInstanceState)
     {
         super.onCreate(savedInstanceState);

         try
         {
                 sampleDB =  this.openOrCreateDatabase(SAMPLE_DBNAME,
  MODE_PRIVATE, null);

                 Cursor c = sampleDB.rawQuery (SELECT RoomName,
  SwitchFullName FROM SwitchTable ORDER BY RoomName,null);

                 int count = c.getCount();
                 System.out.println (Total number of records are+count);
                 if (c != null )
                 {
                         if  (c.moveToFirst())
                         {
                                 do
                                 {
                                         roomName =
  c.getString(c.getColumnIndex(RoomName));
                                         switchName =
  c.getString(c.getColumnIndex(SwitchFullName));

                                         System.out.println
  (roomName+:+switchName);

   results.add(roomName+-+switchName);

                                 }
                                 while (c.moveToNext());
                                 c.close();
                         }
                 }

                 this.setListAdapter(new ArrayAdapterString(this,
  android.R.layout.simple_list_item_1,results));

         }
         catch (SQLiteException se )
         {
                 Log.e(getClass().getSimpleName(), Could not create or Open
  the database);
         }
         finally
         {
                         //sampleDB.close();
         }

         registerForContextMenu(getListView());
     }

  Now suppose I have list like this

  Hall - Fan
  Kitchen - AC
  Bedroom - tv

  and suppose I delete record no 1 then list display as following

  Kitchen - AC
  Bedroom - tv

  It looks perfectly well. But suppose I press the back button then
  list is again display as

  Hall - Fan
  Kitchen - AC
  Bedroom - tv

  Actually first record is deleted succesfully, but though also it is
  displayed when I press back button. How to avoid this problem?

  --
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  Groups Android Developers group.
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 --
 YuviDroid
 Check out Launch-X http://android.yuvalsharon.net/launchx.php (a widget to
 quickly access your favorite apps and contacts!)http://android.yuvalsharon.net

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[android-developers] Re: Back button problem

2010-12-08 Thread pramod.deore 
Thanks Kostya for your suggestion and link.

On Dec 8, 4:27 pm, Kostya Vasilyev kmans...@gmail.com wrote:
 Pramod,

 Move the code that loads data from the database from onCreate to onStart.

 See this for an explanation:

 http://developer.android.com/guide/topics/fundamentals.html#actlife

 ( scroll down to see a very useful flowchart )

 -- Kostya

 08.12.2010 14:08, pramod.deore пишет:



  Hi everybody,

               In my application I am displaying list. I have created
  ContextMenu. In that there are options like add,remove,back,etc...
               Now when I select Remove option then  I call method
  deleteRecord(), which  delete that list record from database. After
  that I call method - startActivity(getIntent());  Because of this
  method activity restarts and list changes are instantly visible to
  user because in start method I had write code that display the list
  like.

  public void onCreate(Bundle savedInstanceState)
       {
           super.onCreate(savedInstanceState);

           try
           {
             sampleDB =  this.openOrCreateDatabase(SAMPLE_DBNAME,
  MODE_PRIVATE, null);

             Cursor c = sampleDB.rawQuery (SELECT RoomName,
  SwitchFullName FROM SwitchTable ORDER BY RoomName,null);

             int count = c.getCount();
             System.out.println (Total number of records are+count);
             if (c != null )
             {
                     if  (c.moveToFirst())
                     {
                             do
                             {
                                     roomName = 
  c.getString(c.getColumnIndex(RoomName));
                                     switchName =
  c.getString(c.getColumnIndex(SwitchFullName));

                                     System.out.println 
  (roomName+:+switchName);
                                     results.add(roomName+-+switchName);

                             }
                             while (c.moveToNext());
                             c.close();
                     }
             }

             this.setListAdapter(new ArrayAdapterString(this,
  android.R.layout.simple_list_item_1,results));

           }
           catch (SQLiteException se )
           {
             Log.e(getClass().getSimpleName(), Could not create or Open
  the database);
           }
           finally
           {
                     //sampleDB.close();
           }

           registerForContextMenu(getListView());
       }

  Now suppose I have list like this

  Hall - Fan
  Kitchen - AC
  Bedroom - tv

  and suppose I delete record no 1 then list display as following

  Kitchen - AC
  Bedroom - tv

  It looks perfectly well. But suppose I press the back button then
  list is again display as

  Hall - Fan
  Kitchen - AC
  Bedroom - tv

  Actually first record is deleted succesfully, but though also it is
  displayed when I press back button. How to avoid this problem?

 --
 Kostya Vasilyev -- WiFi Manager + pretty widget 
 --http://kmansoft.wordpress.com

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Re: [android-developers] Re: Back button problem

2010-12-08 Thread Kostya Vasilyev 


Also, don't do this:

startActivity(getIntent());


This launches a new activity just like the current one.

If you need to keep the current activity and update the UI with new 
data, just put that code in a function and call it when necessary.


-- Kostya

08.12.2010 14:31, pramod.deore пишет:

Thanks Kostya for your suggestion and link.

On Dec 8, 4:27 pm, Kostya Vasilyevkmans...@gmail.com  wrote:

Pramod,

Move the code that loads data from the database from onCreate to onStart.

See this for an explanation:

http://developer.android.com/guide/topics/fundamentals.html#actlife

( scroll down to see a very useful flowchart )

-- Kostya

08.12.2010 14:08, pramod.deore пишет:




Hi everybody,
  In my application I am displaying list. I have created
ContextMenu. In that there are options like add,remove,back,etc...
  Now when I select Remove option then  I call method
deleteRecord(), which  delete that list record from database. After
that I call method - startActivity(getIntent());  Because of this
method activity restarts and list changes are instantly visible to
user because in start method I had write code that display the list
like.
public void onCreate(Bundle savedInstanceState)
  {
  super.onCreate(savedInstanceState);
  try
  {
sampleDB =  this.openOrCreateDatabase(SAMPLE_DBNAME,
MODE_PRIVATE, null);
Cursor c = sampleDB.rawQuery (SELECT RoomName,
SwitchFullName FROM SwitchTable ORDER BY RoomName,null);
int count = c.getCount();
System.out.println (Total number of records are+count);
if (c != null )
{
if  (c.moveToFirst())
{
do
{
roomName = 
c.getString(c.getColumnIndex(RoomName));
switchName =
c.getString(c.getColumnIndex(SwitchFullName));
System.out.println 
(roomName+:+switchName);
results.add(roomName+-+switchName);
}
while (c.moveToNext());
c.close();
}
}
this.setListAdapter(new ArrayAdapterString(this,
android.R.layout.simple_list_item_1,results));
  }
  catch (SQLiteException se )
  {
Log.e(getClass().getSimpleName(), Could not create or Open
the database);
  }
  finally
  {
//sampleDB.close();
  }
  registerForContextMenu(getListView());
  }
Now suppose I have list like this
Hall - Fan
Kitchen - AC
Bedroom - tv
and suppose I delete record no 1 then list display as following
Kitchen - AC
Bedroom - tv
It looks perfectly well. But suppose I press the back button then
list is again display as
Hall - Fan
Kitchen - AC
Bedroom - tv
Actually first record is deleted succesfully, but though also it is
displayed when I press back button. How to avoid this problem?

--
Kostya Vasilyev -- WiFi Manager + pretty widget --http://kmansoft.wordpress.com



--
Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com

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[android-developers] Re: Back button problem

2010-12-08 Thread pramod.deore 
Hello , Now I had place the code that loads data from the database in
a function and called that function when user hit the delete button .
But now record gets deleted, but changes are not visible properly.
(Properly means suppose there are 2 records and if I delete one record
then at this time it shows me 3 records i.e 2 earlier and one after
removing one record out of that 2 But actually one record gets
successfully deleted. When I restarts the application and see the
record then only one record it shows.)  Then how to refresh this list
view screen?

On Dec 8, 4:47 pm, Kostya Vasilyev kmans...@gmail.com wrote:
 Also, don't do this:

 startActivity(getIntent());

 This launches a new activity just like the current one.

 If you need to keep the current activity and update the UI with new
 data, just put that code in a function and call it when necessary.

 -- Kostya

 08.12.2010 14:31, pramod.deore пишет:



  Thanks Kostya for your suggestion and link.

  On Dec 8, 4:27 pm, Kostya Vasilyevkmans...@gmail.com  wrote:
  Pramod,

  Move the code that loads data from the database from onCreate to onStart.

  See this for an explanation:

 http://developer.android.com/guide/topics/fundamentals.html#actlife

  ( scroll down to see a very useful flowchart )

  -- Kostya

  08.12.2010 14:08, pramod.deore пишет:

  Hi everybody,
                In my application I am displaying list. I have created
  ContextMenu. In that there are options like add,remove,back,etc...
                Now when I select Remove option then  I call method
  deleteRecord(), which  delete that list record from database. After
  that I call method - startActivity(getIntent());  Because of this
  method activity restarts and list changes are instantly visible to
  user because in start method I had write code that display the list
  like.
  public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            try
            {
              sampleDB =  this.openOrCreateDatabase(SAMPLE_DBNAME,
  MODE_PRIVATE, null);
              Cursor c = sampleDB.rawQuery (SELECT RoomName,
  SwitchFullName FROM SwitchTable ORDER BY RoomName,null);
              int count = c.getCount();
              System.out.println (Total number of records are+count);
              if (c != null )
              {
                      if  (c.moveToFirst())
                      {
                              do
                              {
                                      roomName = 
  c.getString(c.getColumnIndex(RoomName));
                                      switchName =
  c.getString(c.getColumnIndex(SwitchFullName));
                                      System.out.println 
  (roomName+:+switchName);
                                      results.add(roomName+-+switchName);
                              }
                              while (c.moveToNext());
                              c.close();
                      }
              }
              this.setListAdapter(new ArrayAdapterString(this,
  android.R.layout.simple_list_item_1,results));
            }
            catch (SQLiteException se )
            {
              Log.e(getClass().getSimpleName(), Could not create or Open
  the database);
            }
            finally
            {
                      //sampleDB.close();
            }
            registerForContextMenu(getListView());
        }
  Now suppose I have list like this
  Hall - Fan
  Kitchen - AC
  Bedroom - tv
  and suppose I delete record no 1 then list display as following
  Kitchen - AC
  Bedroom - tv
  It looks perfectly well. But suppose I press the back button then
  list is again display as
  Hall - Fan
  Kitchen - AC
  Bedroom - tv
  Actually first record is deleted succesfully, but though also it is
  displayed when I press back button. How to avoid this problem?
  --
  Kostya Vasilyev -- WiFi Manager + pretty widget 
  --http://kmansoft.wordpress.com

 --
 Kostya Vasilyev -- WiFi Manager + pretty widget 
 --http://kmansoft.wordpress.com

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Re: [android-developers] Re: Back button problem

2010-12-08 Thread nithya nataraj 
hi,
i am not android developer even i am learinig android like u and working on
a application
i dnt no how did u mail me
tats k
i no a bit abt database , i thnk ur printing these contents in logcat
dnt do tat ,check in cmd prompt  u can get wer  is the mistake

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[android-developers] Re: Back button problem

2010-12-08 Thread pramod.deore 
 i dnt no how did u mail me

Did I?

On Dec 9, 9:47 am, nithya nataraj nithyan...@gmail.com wrote:
 hi,
 i am not android developer even i am learinig android like u and working on
 a application
 i dnt no how did u mail me
 tats k
 i no a bit abt database , i thnk ur printing these contents in logcat
 dnt do tat ,check in cmd prompt  u can get wer  is the mistake

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