Passing a UILabel value of UItableviewcell to another view in iPhone returning null value? [closed] - xcode4

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Closed 10 years ago.
I am a newbie to objective-C and got strucked at a particular point.I have to pass a UILabel value from tableviewcell to a label in Scrollview when accessoryButtonTappedForRowWithIndexPath action takes place .But the value is not passed ..I donno where Iam going wrong? I am writing this code :
ViewController1.h:
UILabel *name1;
#property(nonatomic,retain)IBOutlet UILabel *name1;
ViewController1.m:
- (void) tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath
{
ViewController2 *v2 = [[ViewController2 alloc] initWithNibName:#"ViewController2" bundle:nil];
v2.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:v2 animated:YES];
v2.provName=[name1 retain]; //name1 is the name of UILabel in TableView.
[v2 release];
}
ViewController2.h
UILabel *providerName;
SString *provName;
ViewController2.m:
- (void)viewDidLoad
{
providerName =[[UILabel alloc] init];
[providerName setFrame:CGRectMake(10,10,300,50) ];
providerName.textAlignment=UITextAlignmentLeft;
providerName.backgroundColor=[UIColor blackColor];
self.providerName.text=self.provName;
providerName.highlightedTextColor=[UIColor whiteColor];
[self.view addSubview:providerName];
}
I can see the label but not the value in it ...Y is it so?How to pass a UIlabel value to another view ?

Answer 1

In your accessoryButtonTappedForRowWithIndexPath just make some changes as below,
add
v2.provName=[name1 retain]; //name1 is the name of UILabel in TableView.
just above
[self presentModalViewController:v2 animated:YES];
and also as provName in V2 is synthesized no need to retain just assign it..
Edit: To get the Cell use the below
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
v2.provName = cell.name1;
UITableViewCell can also your custom cell.
Edit: changes in CellForRow
Update your cellForRow as
-(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]autorelease];
}
NSMutableDictionary *d = (NSMutableDictionary *) [arr objectAtIndex:indexPath.row];
cell.accessoryType= UITableViewCellAccessoryDetailDisclosureButton;
UILabel* name1= [[UILabel alloc]initWithFrame:CGRectMake(10, 5, 320, 10)];
name1.font=[UIFont boldSystemFontOfSize:14];
[name1 setTextAlignment:UITextAlignmentLeft];
[name1 setText:[d valueForKey:#"Name"]];
name1.tag = 111;
[cell addSubview:name1];
[name1 release];
return cell;
}
do not make your cell and name1 as global, use it only in cellForRow
update your didSelectRow as below
UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath];
UILabel* name1 = (UILabel*)[cell viewWithTag:111];
v2.provName = name1.text;
this should work fine.