Back navigation issue using code - iphone

Question

I am doing json parsing application. In which there is not an issue regarding parsing. I am having list uptill the type="0". But type="1" is having a description. All the "listing" as well as the "description" is set properly.
{"pageid":"5824","title":"Sms Collection","type":"0","desc":"Friendship SMS:$#|5825|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Love SMS:$#|5826|#$:4cing.com/mobile_app/uploads/pageicon/Love.png;Miss U SMS:$#|5827|#$:4cing.com/mobile_app/uploads/pageicon/missu.png;Funny SMS:$#|5828|#$:4cing.com/mobile_app/uploads/pageicon/funny.png;Valentine SMS:$#|5829|#$:4cing.com/mobile_app/uploads/pageicon/valantine.png;Adult SMS:$#|5830|#$:4cing.com/mobile_app/uploads/pageicon/adult.png;Anniversary SMS:$#|5832|#$:4cing.com/mobile_app/uploads/pageicon/anniversary.png;Birthday SMS:$#|5833|#$:4cing.com/mobile_app/uploads/pageicon/birthday.png;Break up SMS:$#|5834|#$:4cing.com/mobile_app/uploads/pageicon/Breakup.png;Broken Heart SMS:$#|5835|#$:4cing.com/mobile_app/uploads/pageicon/heartbroken.png;Christmas SMS:$#|5836|#$:4cing.com/mobile_app/uploads/pageicon/Christmas.png;Exam SMS:$#|5837|#$:4cing.com/mobile_app/uploads/pageicon/exam.png;Flirt SMS:$#|5838|#$:4cing.com/mobile_app/uploads/pageicon/flirtsms.png;Good Luck SMS:$#|5839|#$:4cing.com/mobile_app/uploads/pageicon/goodluck.png;Good Morning SMS:$#|5840|#$:4cing.com/mobile_app/uploads/pageicon/goodmornig.png;Good Night SMS:$#|5841|#$:4cing.com/mobile_app/uploads/pageicon/goodnight.png;Insult SMS:$#|5842|#$:4cing.com/mobile_app/uploads/pageicon/inseart.png;Pashto SMS:$#|5843|#$:4cing.com/mobile_app/uploads/pageicon/pashto.png;Poetry SMS:$#|5844|#$:4cing.com/mobile_app/uploads/pageicon/poetry.png;Sardar SMS:$#|5845|#$:4cing.com/mobile_app/uploads/pageicon/sardar.png;Santa Banta SMS:$#|5846|#$:4cing.com/mobile_app/uploads/pageicon/santabanta.png;Smile SMS:$#|5847|#$:4cing.com/mobile_app/uploads/pageicon/smile.png;Sorry SMS:$#|5848|#$:4cing.com/mobile_app/uploads/pageicon/sorry.png;Chanakya SMS:$#|5849|#$:4cing.com/mobile_app/uploads/pageicon/chanakya.png;","cache":"1","Nexturl":"5825","prevurl":"0","bckurl":"0"}
when application is launched (type="0") this is the first list with above data.
Onclick of Friendship SMS cell i am getting (type="0") this data.
{"pageid":"5825","title":"Friendship SMS","type":"0","desc":"Do not lie, Do not cheat and do not make promises :$#|5850|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;There are no strings attached to a friendship, no :$#|5851|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;friends are like stars. You ca not always see them:$#|5852|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Friends should b like zero. when u add, they r sam:$#|5853|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Friendship is like a glass handle it with care bec:$#|5854|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;A friend gives hope when life is low, a friend is :$#|5855|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;How long shall we be friends? Do you want a clue? :$#|5856|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;My friendship is nothing but a round, Wandering wh:$#|5857|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;When nails are growing, We cut our nails, Not fing:$#|5858|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;A true friend understands when u say I forgot, wai:$#|5859|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Making a million friends is not an achievement, Th:$#|5860|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Friendship and Medicine both r good 4 our health:$#|5861|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;A memory lasts forever, and never does it die. Tru:$#|5862|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Where there is no compromise in telling the secret:$#|5863|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;I m not Wealthy but i have Rich Heart, I m not Bes:$#|5864|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Do not Love a Friend who Hurts U Do not Hurt a Fri:$#|5865|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;To hear what is unspoken, to see what is invisible:$#|5866|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Life is 5 star Mother is top star Father is king s:$#|5867|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;A single rose can be my garden A single friend, my:$#|5868|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;To live a life i need heartbeat, 2 have heartbeat :$#|5869|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;A true relationship is when you can tell each othe:$#|5870|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Friends\" are like balloons once u let them go u ca:$#|5871|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;MY friendship is just like a rubber band, It is to:$#|5872|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;I wish every relationship come with the same tag a:$#|5873|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;As precious as u r to me, As precious no one can e:$#|5874|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;Friendship Must Never Be Buried Under The Weight O:$#|5875|#$:4cing.com/mobile_app/uploads/pageicon/friendship.png;","cache":"1","Nexturl":"5850","prevurl":"5824","bckurl":"5849"}
Finally this is having (type="1") for the screen onclick of "Do not lie,Do not che..."
So description is shown as
I am having problem in the back process, i have to use prevurl which is similar to the pageid of rhe previous page, for the back functionality
This is the code which i am doing for the back functionality,
-(IBAction)btnBackClicked:(id)sender
{
int Type;
NSMutableDictionary *tempDict1;
for(int i=0;i<[test.JsonPageList count];i++)
{
tempDict1 = [[NSMutableDictionary alloc]init];
tempDict1 = (NSMutableDictionary *)[test.JsonPageList objectAtIndex:i];
NSLog(#"pageid is.....%d",[[tempDict1 valueForKey:#"pageid"] intValue]);
if ([[tempDict1 valueForKey:#"pageid"] intValue])
{
Type = [[tempDict1 valueForKey:#"type"] intValue];
if (Type == 0)
{
NSArray *arr=[[tempDict1 valueForKey:#"desc"] componentsSeparatedByString:#";"];
NSString *subStar = #"|#$:";
NSString *sub=#":$#|";
[test.arrTitle removeAllObjects];
[test.arrnew removeAllObjects];
[test.arrId removeAllObjects];
[test.arrImages removeAllObjects];
for (int i=0; i<[arr count]-1; i++)
{
[test.arrTitle addObject:[[arr objectAtIndex:i] substringToIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:sub])-4]];
[test.arrnew addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:sub])]];
[test.arrId addObject:[[test.arrnew objectAtIndex:i] substringToIndex:NSMaxRange([[test.arrnew objectAtIndex:i] rangeOfString:subStar])-4]];
[test.arrImages addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])]];
}
[tbl_withData reloadData];
}
}
}
}
This is the code for the parsing
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[connection release];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
if ([[NSUserDefaults standardUserDefaults] boolForKey:#"SecondTime"])
{
[self saveData:responseData toFile:#"SMSCollection.txt"];
results = [responseString JSONValue];
JsonPageList = [results objectForKey:#"page"];
desc = [[NSMutableArray alloc] init];
for (NSString * strName in results)
{
JsonPageList = [results objectForKey:strName];
dictHash = [[NSMutableDictionary alloc] init];
[dictHash setObject:JsonPageList forKey:#"JsonPageList"];
for (int i = 0; i < [JsonPageList count]; i++)
{
[desc addObject:[[JsonPageList objectAtIndex:i] valueForKey:TAG_DESC]];
int PAGEID = [[NSString stringWithFormat:#"%#",[[JsonPageList objectAtIndex:i] valueForKey:#"pageid"]] intValue];
[self displayPage:PAGEID];
}
}
}
[responseString release];
}
-(void) displayPage:(int)pageID
{
page.pageid = pageID;
if (page.type == PAGE_TYPE_MENU)
{
NSString *desc1=[desc objectAtIndex:0];
NSArray *arr=[desc1 componentsSeparatedByString:#";"];
NSString *subStar = #"|#$:";
NSString *sub=#":$#|";
arrTitle=[[NSMutableArray alloc] init];
arrImages = [[NSMutableArray alloc] init];
arrnew = [[NSMutableArray alloc]init];
arrId=[[NSMutableArray alloc]init];
for (int i=0; i<[arr count]-1; i++)
{
[arrTitle addObject:[[arr objectAtIndex:i] substringToIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:sub])-4]];
[arrnew addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:sub])]];
[arrId addObject:[[arrnew objectAtIndex:i] substringToIndex:NSMaxRange([[arrnew objectAtIndex:i] rangeOfString:subStar])-4]];
[arrImages addObject:[[arr objectAtIndex:i] substringFromIndex:NSMaxRange([[arr objectAtIndex:i] rangeOfString:subStar])]];
}
}
else if (page.type == PAGE_TYPE_CONTENT)
{
NSLog(#"CURR title:- %#\n & desc:- %#",page.title1 ,page.desc);
UITextView *TextView = [[UITextView alloc] init];
TextView.text = page.title1;
UILabel *lblcurrentPage = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 300)];
lblcurrentPage.backgroundColor = [UIColor whiteColor];
lblcurrentPage.textColor = [UIColor blackColor];
lblcurrentPage.text = page.desc;
}
}
Help me out of this problem.