UITableView is crashing when trying to edit cell

Question

Hi Guys,

I am having some form in that is consisting of 5 custom cells in a table view. Here is the code:

    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;}

\- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return 5;
}

\- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"in here");
    static NSString *MyIdentifier = @"MyIdentifier";

    FreeSignupCell *cell = (FreeSignupCell *)[tableView dequeueReusableCellWithIdentifier:MyIdentifier];
    if (cell == nil) {
        NSLog(@"shazam");
        cell = [[[FreeSignupCell alloc] initWithFrame:CGRectZero reuseIdentifier:MyIdentifier] autorelease];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;    
    }

    switch (indexPath.row) {
        case 0:
            NSLog(@"index 0");
            [cell setLabelContent:@"First Name"];
            //self.firstName = [cell getText];
            break;
        case 1:
            NSLog(@"index 1");
            [cell setLabelContent:@"Last Name"];
            //self.lastName = [cell getText];
            break;
        case 2:
            NSLog(@"index 2");
            [cell setLabelContent:@"Company (optional)"];
            //self.company = [cell getText];
            break;
        case 3:
            NSLog(@"index 3");
            [cell setLabelContent:@"Website (optional)"];
            [cell setText: @"http://"];
            //self.website = [cell getText];
            break;
        case 4:
            NSLog(@"index 4");
            [cell setLabelContent:@"E-mail"];
            //self.email = [cell getText];
            break;
        default:
            [cell setLabelContent:@"E-mail"];
    }

    return cell;
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{  
    return 70.0;
}

The problem is that when I edit first field, that scroll quickly to the last one, app crashes with objc_mssend error.

Any ideas?

Answer 1

Another issue... Here is how I am getting data from the page

-(void) SignupAction {

//Fetching signup data from signup form
NSIndexPath *path = [NSIndexPath indexPathForRow:0 inSection:0];
FreeSignupCell *cell = (FreeSignupCell *)[self.tableView cellForRowAtIndexPath:path];
self.firstName = [cell getText];

path = [NSIndexPath indexPathForRow:1 inSection:0];
cell = (FreeSignupCell *)[self.tableView cellForRowAtIndexPath:path];
self.lastName = [cell getText];

path = [NSIndexPath indexPathForRow:2 inSection:0];
cell = (FreeSignupCell *)[self.tableView cellForRowAtIndexPath:path];
self.company = [cell getText];

path = [NSIndexPath indexPathForRow:3 inSection:0];
cell = (FreeSignupCell *)[self.tableView cellForRowAtIndexPath:path];
self.website = [cell getText];

path = [NSIndexPath indexPathForRow:4 inSection:0];
cell = (FreeSignupCell *)[self.tableView cellForRowAtIndexPath:path];
self.email = [cell getText];

//JSON Dictionaries require parameters that are not null
if (self.firstName == nil) {
 self.firstName = @"";
}
if (self.lastName == nil) {
 self.lastName = @"";
}
if (self.company == nil) {
 self.company = @"";
}
if (self.website == nil) {
 self.website = @"";
}
if (self.email == nil) {
 self.email = @"";
}

When I am pressing SignUp button on the page I only see website and email fields. What happens is that when I log variables, only email and website are there, other ones are @"". What is happening?

Answer 2

When the FreeSignupCell goes away (say because it scrolled off the top or bottom, or gets reused), and the getText from that destructed cell goes away and gets [text release];'d on you, what happens to your self.firstName, self.lastName, self.company, self.website, and self.email that now refers to a string object that was free()'d?

I think you should use [[cell getText] retain]; instead.