selecting row at indexpath doesn;t work - iphone

Hi guys i have different section in my tableview ( more than 6) and each one has different rows. But only one of them leads to next view controllers
here is the code but when i click it its not working
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger section = [indexPath section];
NSUInteger row = [indexPath row];
switch (section)
{
case 5:
{
switch (row)
{
case 0:
{
Language_view_controller * language_controller = [Language_view_controller alloc];
[self.navigationController pushViewController:language_controller animated:YES];
[language_controller release];
}
break;
default:
break;
}
}
break;
default:
break;
}
}


You are just allocating the memory for your view controller, you also need to initialize it by doing something like this:
Language_view_controller * language_controller = [[Language_view_controller alloc] initWithNibName:#"Language_view_controller" bundle:nil];
[self.navigationController pushViewController:language_controller animated:YES];
[language_controller release];

Related

load uiviewcontroller after click on uitableviewcell iOS

I'm little confused of how to implement simple uitableview based menu.Something like in Kayak app http://www.sendspace.com/file/igv31p
My storyboard look like this: navigation controller --->master view controller --> detail view controller. In master view controller i've got a table view. I populated it dynamically with 4 cells which are Products, Stores, Packages and Finances. All I want to do is to display child uiviewcontroller that will be a child uiviewcontroller. Something like this:
Products --> UiViewController with specific functionality
Stores --> Other UIViewControlelr with specific functionality
... and so on.
I create didselectrowatindex method
and try to do something with pushViewController like in code below method but it doesn't work.
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
StoresViewController *storeView = [[StoresViewController alloc]init];
switch (indexPath.section) {
case 0:
switch (indexPath.row) {
case 0:
{
NSLog(#"Products");
}
break;
case 1:{
[self.navigationController pushViewController:storeView animated:YES];
NSLog(#"Stores");
}
break;
case 2:{
NSLog(#"Packages");
}
break;
case 3:{
NSLog(#"Finances");
}
break;
}
break;
default:
break;
}
I would appreciate if someone can help me to understand it. If this question was asked before please show me where:) Thanks in advance
Something like in Kayak app
http://www.sendspace.com/file/igv31p

Just replace this code..
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
switch (indexPath.section) {
case 0:
switch (indexPath.row) {
case 0:
{
NSLog(#"Products");
}
break;
case 1:
{
UINavigationController *navigationController = [self.storyboard instantiateViewControllerWithIdentifier:#"StoresViewController"];
[self presentViewController:navigationController animated:YES completion:nil];
NSLog(#"Stores");
}
break;
case 2:
{
NSLog(#"Packages");
}
break;
case 3:
{
NSLog(#"Finances");
break;
}
break;
default:
break;
}
}

StoresViewController *storeView = [[StoresViewController alloc]initWithNibName:#"StoresViewController" bundle:nil];
simply passed the nib when you create the objcet.

How to pass data back from detail view controller to uitableview?

In my app i making use of uitable to select category from my list.
my task is,when ever user click or select a cell he should be able to view the selected cell detail in next view(detail view). and when he select the item in a detail view he should be able to move back in a table view and should be able to see the selected item in a rootivew controller.
i am able to navigate properly from tableview to detail view,but i am not able to show the item which is selected in detail view to rootviewcontroller.
please help me out with this issue.
image one is my rootview controller page.
for example : if user select #"make" he will able to see all the releated category of #"make"
. in a next page(which image2).
image to is my detail page.
and when user select #"abarth" it should be display in a rootview controller page(which is page one).
following is my code of rootview controller page:
- (void)viewDidLoad
{
self.car = [[NSArray alloc]initWithObjects:#"Make",#"Model",#"Price Min",#"Price Max",#"State",nil];
[super viewDidLoad];
}
-(NSInteger) numberOfSectionInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.car count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *TextCellIdentifier = #"Cell";
UITableViewCell *cell =[tableView dequeueReusableCellWithIdentifier:TextCellIdentifier];
if (cell==nil)
{
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:TextCellIdentifier];
cell.accessoryType = UITableViewCellAccessoryNone;
cell.selectionStyle = UITableViewCellSelectionStyleNone;
}
cell.textLabel.text = [self.car objectAtIndex:[indexPath row]];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (0 == indexPath.row)
{
NSLog(#"0");
self.detailcontroller.title = #"Make";
}
else if (1 == indexPath.row)
{
NSLog(#"1");
self.detailcontroller.title = #"Model";
}
else if (2 == indexPath.row)
{
NSLog(#"2");
self.detailcontroller.title = #"Price Min";
}
else if (3 == indexPath.row)
{
self.detailcontroller.title = #"Price Max";
}
else if (4 == indexPath.row)
{
NSLog(#"3");
self.detailcontroller.title = #"State";
}
[self.navigationController
pushViewController:self.detailcontroller
animated:YES];
}
following is my detail view page code:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if ([self.title isEqualToString:#"Make"])
{
detail = [[NSArray alloc]initWithObjects:#"Any Make",#"Abarth",#"AC",#"ADAYER",#"Adelaide",#"ALFA ROMEO",#"ALLARD",#"ALPINE-RENAULT",#"ALVIS",#"ARMSTRONG",
#"ASTON MARTIN",#"AUDI",#"AUSTIN",#"AUSTIN HEALEY",#"Barossa",#"BEDFORD",
#"BENTLEY",#"BERTONE",#"BMW",#"BOLWELL",#"BRISTOL",#"BUICK",#"BULLET",
#"CADILLAC",#"CATERHAM",#"CHERY",#"CHEVROLET",#"CHRYSLER",#"CITROEN",
#"Country Central",#"CSV",#"CUSTOM",#"DAEWOO",#"DAIHATSU",#"DAIMLER",
#"DATSUN",#"DE TOMASO",#"DELOREAN",#"DODGE",#"ELFIN",#"ESSEX",
#"EUNOS",#"EXCALIBUR",#"FERRARI",nil];
if ([self.title isEqualToString:#"Abarth"])
{
detail = [[NSArray alloc]initWithObjects:#"HI", nil];
}
}
else if ([self.title isEqualToString:#"Model"])
{
detail = [[NSArray alloc]initWithObjects:#"Any Model", nil];
}
else if ([self.title isEqualToString:#"Price Min"])
{
detail = [[NSArray alloc]initWithObjects:#"Min",#"$2,500",
#"$5,000",
#"$7,500",
#"$10,000",
#"$15,000",
#"$20,000",
#"$25,000",
#"$30,000",
#"$35,000",
#"$40,000",
#"$45,000",
#"$50,000",
#"$60,000",
#"$70,000",
#"$80,000",
#"$90,000",
#"$100,000",
#"$500,000",
#"$1,000,000",nil];
}
else if ([self.title isEqualToString:#"Price Max"])
{
detail = [[NSArray alloc]initWithObjects:#"Max",
#"$2,500",
#"$5,000",
#"$7,500",
#"$10,000",
#"$15,000",
#"$20,000",
#"$25,000",
#"$30,000",
#"$35,000",
#"$40,000",
#"$45,000",
#"$50,000",
#"$60,000",
#"$70,000",
#"$80,000",
#"$90,000",
#"$100,000",
#"$500,000",
#"$1,000,000",nil];
}
else if ([self.title isEqualToString:#"State"])
{
detail = [[NSArray alloc]initWithObjects:#"Any State",
#"Australian Capital Territory",
#"New South Wales",
#"Northern Territory",
#"Queensland",
#"South Australia",
#"Tasmania",
#"Victoria",
#"Western Australia",nil];
}
[self.tableView reloadData];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [detail count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [detail objectAtIndex:
[indexPath row]];
cell.font = [UIFont systemFontOfSize:14.0];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.navigationController popViewControllerAnimated:YES];
}

You need to make use of custom delegates. Create a protocol in your detailview and implement it in your rootview.Pass the selected string as parameter to delegate method and from the delegate method, display it in your textfield.
//something like this
#interface detailViewController
// protocol declaration
#protocol myDelegate
#optional
-(void)selectedValueIs:(NSString *)value;
// set it as the property
#property (nonatomic, assign) id<myDelegate> selectedValueDelegate;
// in your implementation class synthesize it and call the delegate method
#implementation detailViewController
#synthesize selectedValueDelegate
// in your didselectRowAtIndex method call this delegate method
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self selectedValueDelegate])selectedValueIs:valueString] ;
[self.navigationController popViewControllerAnimated:YES];
}
#end
// In your rootViewController conform to this protocol and then set the delegate
detailViewCtrlObj.selectedValueDelegate=self;
//Implement the delegate Method
-(void)selectedValueIs:(NSString *)value{
{
// do whatever you want with the value string
}

Hi you will have to do it using protocols and delegate
Please see my linkon protocol and delegate
you can also do it by creating a variable in appdelegate , setting its property and accessing it in any other view .
YourAppDelegate *appDelegate = (YourAppDelegate *)[[UIApplication sharedApplication] delegate];
delegate.yourVariable;

Missing Cell Contents When Adding "Add New Item" row to bottom row of UITableView

I am creating an "add new item" row to a section in a table view which gets dynamically added/deleted as the editing mode is entered/exited. This works fine however if the table is longer than the screen then the labels for any rows not yet displayed are not shown when you scroll down to see the new "add new item row".
The key parts of my code are:
setEditing...
-(void)setEditing:(BOOL)editing animated:(BOOL)animate
{
[super setEditing:editing animated:animate];
[self.tableView setEditing:editing animated:animate];
NSArray *paths = [NSArray arrayWithObject:
[NSIndexPath indexPathForRow:[self.location.rooms count] inSection:kSectionRooms]];
if (editing)
{
[[self tableView] insertRowsAtIndexPaths:paths
withRowAnimation:UITableViewRowAnimationTop];
}
else {
[[self tableView] deleteRowsAtIndexPaths:paths
withRowAnimation:UITableViewRowAnimationTop];
}
}
numberOfRowsInSection...
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
switch (section) {
case kSectionFields:
return NUM_SECTION_FIELDS_ROWS;
break;
case kSectionRooms:
return [location.rooms count] + ([self.tableView isEditing] ? 1 : 0);
break;
default:
return 0;
break;
}
return 0;
}
portion of cellForRowAtIndexPath
if ([self.tableView isEditing] && row == location.rooms.count)
{
roomCell.textLabel.text = #"Add new room...";
}
else
{
roomCell.textLabel.text = [[loc.rooms objectAtIndex:row] name];
}
editingStyleForRowAtIndexPath....
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath {
switch ([indexPath section])
{
case kSectionFields:
return UITableViewCellEditingStyleNone;
break;
case kSectionRooms:
if ([indexPath row] == location.rooms.count && [self.tableView isEditing])
{
return UITableViewCellEditingStyleInsert;
}
else
{
return UITableViewCellEditingStyleDelete;
}
break;
}
return UITableViewCellEditingStyleNone;
}
These are all working correctly if there is no scrolling but as soon as there is scrolling then I get problems. I understand that this must be due to the fact that the TableView has not displayed the hidden rows and therefore has not gone through the lazy loading process. I've tried using reloadData but that makes no difference (unsurprisingly) but as I am new to this I am not sure of the best way of making the rows appear.
I am sure there will be a simple solution so any ideas would be most appreciated!
Cheers in advance
jez

iPhone: remove section in TableView

I'm working with table view and sections...In some case I need do remove one section, in another set it back. I can do that in 2 ways:
1)
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (somecase) {
return 2;
} else {
return 3;
}
}
and than
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *tableViewCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:nil];
[tableViewCell autorelease];
tableViewCell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
if (sectionNumber == 3 {
switch (indexPath.section) {
case 0:
break;
case 1:
break;
case 2:
break;
}
} else if (sectionNumber == 2) {
switch (indexPath.section) {
case 0:
break;
case 1:
break;
}
return tableViewCell;
}
}
And a second way is to implement
[self.tableView beginUpdates];
[self.tableView deleteSections:[NSIndexSet indexSetWithIndex:1] withRowAnimation:NO];
[self.tableView endUpdates];
But it's not working...I put this methods to ViewDidLoad, is that ok ? Or I should put in somewhere else ? Or what is the problem ?
And what is the best practice for removing section ? first one or second ? thanks....

set condition that will satisfy "somecase " then reload tableview
[tableview reloadData];

Removing NSLog breaks compiler

Okay, so this is weird
I have this code
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
switch (indexPath.row) {
case 1:
NSLog(#"Platform Cell Selected");
AddGamePlatformSelectionViewController *platformVC =
[[AddGamePlatformSelectionViewController alloc]
initWithNibName:#"AddGamePlatformSelectionViewController" bundle:nil];
platformVC.context = context;
platformVC.game = newGame;
[self.navigationController pushViewController:platformVC animated:YES];
[platformVC release];
break;
default:
break;
}
}
Which works fine.
When I remove the NSLog Statement, like so:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
switch (indexPath.row) {
case 1:
//NSLog(#"Platform Cell Selected");
AddGamePlatformSelectionViewController *platformVC =
[[AddGamePlatformSelectionViewController alloc]
initWithNibName:#"AddGamePlatformSelectionViewController" bundle:nil];
platformVC.context = context;
platformVC.game = newGame;
[self.navigationController pushViewController:platformVC animated:YES];
[platformVC release];
break;
default:
break;
}
}
I get the following compiler errors
/Users/DVG/Development/iPhone/Backlog/Classes/AddGameTableViewController.m:102:0 /Users/DVG/Development/iPhone/Backlog/Classes/AddGameTableViewController.m:102: error: expected expression before 'AddGamePlatformSelectionViewController'
/Users/DVG/Development/iPhone/Backlog/Classes/AddGameTableViewController.m:103:0 /Users/DVG/Development/iPhone/Backlog/Classes/AddGameTableViewController.m:103: error: 'platformVC' undeclared (first use in this function)
If I just edit out the two // for commenting out that line, everything works swimingly.

You can't declare an object (e.g. AddGamePlatformSelectionViewController *platformVC) as the first line in case...
You can solve it by adding some code before than (e.g. NSLog) or by enclosing the code inside the case between { ... } like this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
switch (indexPath.row) {
case 1:
{
AddGamePlatformSelectionViewController *platformVC = [[AddGamePlatformSelectionViewController alloc]
initWithNibName:#"AddGamePlatformSelectionViewController" bundle:nil];
// the rest of the code...
break;
}
}
}

Do you get the same error if you delete the NSLog statement instead of commenting it out? Maybe the compiler just doesn't like that you're starting a case block with a comment. (Ridiculous, I know, but worth a shot?)