Last cell of UITableView disappears automatically after some time? - ios

Question

I have a table view in one view controller with five cells on clicking of which I redirect to some other view controller. The issue is that whenever I come back the view controller that contains the table view, the contents of the last cell in the table view automatically disappears.
Here is the code for my tableview:
-(void)viewWillAppear:(BOOL)animated
{
logoimg=[[NSMutableArray alloc]initWithObjects:#"account_settings.png", #"account_settings_onclick.png",#"invite_friends.png", #"invite_friends_onclick.png", #"leaderboard.png", #"leaderboard_onclick.png", #"setting.png",#"setting_onclick.png", #"logout.png", #"logout_onclick.png", nil];
logoname=[[NSMutableArray alloc]initWithObjects:#"Account Settings", #"Invite Friends",#"Leaderboard",#"Settings",#"Logout",nil];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 45;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return logoname.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *CellIdentifier = [NSString stringWithFormat:#"%d_%d",indexPath.section,indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.backgroundColor = [UIColor clearColor];
//[[[cell contentView] subviews] makeObjectsPerformSelector: #selector(removeFromSuperview)];
UIImage *logoOff = [UIImage imageNamed:[logoimg objectAtIndex:indexPath.row*2]];
UIImage *logoOn = [UIImage imageNamed:[logoimg objectAtIndex:indexPath.row*2+1]];
UIButton *logo = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[logo setBackgroundImage:logoOff forState:UIControlStateNormal];
[logo setBackgroundImage:logoOn forState:UIControlStateSelected];
[logo setBackgroundImage:logoOn forState:UIControlStateHighlighted];
logo.frame = CGRectMake(20, 5, logoOff.size.width/2, logoOff.size.height/2);
logo.userInteractionEnabled = NO;
logo.tag = indexPath.row;
logo.selected = FALSE;
//[bottomView addSubview:logo];
UILabel *name = [[UILabel alloc]initWithFrame:CGRectMake(70,13, cell.contentView.frame.size.width-70, 20)];
[name setFont:[UIFont fontWithName:#"CenturyGothic" size:14]];
name.numberOfLines = 2;
name.text=[logoname objectAtIndex:indexPath.row];
name.backgroundColor = [UIColor clearColor];
[name sizeToFit];
name.textColor = [UIColor whiteColor];
UIImageView *divider = [[UIImageView alloc]init];
divider.image = [UIImage imageNamed:#"divider_line.png"];
divider.frame = CGRectMake(0, 43, self.view.frame.size.width ,2);
[cell.contentView addSubview:logo];
[cell.contentView addSubview:name];
[cell.contentView addSubview:divider];
return cell;
}
The logoname and logoimage are two NSMutableArrays.
If any more code is needed let me know I will provide the necessary code.

Answer 1

Better u need to subclass the tableview because, each time you are reusing the cell, but its subview are not, so just do like this
create a new file and name it as MyCustomCell subclass of UITableViewCell
in MyCustomCell.h file
MyCustomCell.h
#import <UIKit/UIKit.h>
#interface MyCustomCell : UITableViewCell
#property (nonatomic, retain) UIImage *logoOff;
#property (nonatomic, retain) UIImage *logoOn;
#property (nonatomic, retain) UIButton *logo;
#property (nonatomic, retain) UILabel *name;
#property (nonatomic, retain) UIImageView *divider;
#end
in MyCustomCell.m file
MyCustomCell.m
#import "MyCustomCell.h"
#implementation MyCustomCell
#synthesize logoOn;
#synthesize logoOff;
#synthesize logo;
#synthesize name;
#synthesize divider;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
self.logo = [UIButton buttonWithType:UIButtonTypeRoundedRect];
self.logo.userInteractionEnabled = NO;
self.logo.selected = FALSE;
self.name = [[UILabel alloc]initWithFrame:CGRectZero];
[self.name setFont:[UIFont fontWithName:#"CenturyGothic" size:14]];
self.name.numberOfLines = 2;
self.name.backgroundColor = [UIColor clearColor];
[self.name sizeToFit];
self.name.textColor = [UIColor whiteColor];
self.divider = [[UIImageView alloc]init];
[self.contentView addSubview:logo];
[self.contentView addSubview:name];
[self.contentView addSubview:divider];
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (void)layoutSubviews
{
[super layoutSubviews];
// set the frames for all subviews
[self.logo setBackgroundImage:self.logoOff forState:UIControlStateNormal];
[self.logo setBackgroundImage:self.logoOn forState:UIControlStateSelected];
[self.logo setBackgroundImage:self.logoOn forState:UIControlStateHighlighted];
self.logo.frame = CGRectMake(20, 5, self.logoOff.size.width/2, self.logoOff.size.height/2);
self.name.frame = CGRectMake(70,13, self.bounds.size.width-70, 20);
self.divider.frame = CGRectMake(0, 43, self.bounds.size.width ,2);
}
#end
and in the controller
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
MyCustomCell *cell = [tableView dequeueReusableCellWithIdentifier:#"CELL"];
if(cell == nil)
{
cell = [[MyCustomCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"CELL"];
}
cell.logoOff = [UIImage imageNamed:[logoimg objectAtIndex:indexPath.row*2]];
cell.logoOn = [UIImage imageNamed:[logoimg objectAtIndex:indexPath.row*2]];
cell.name.text = [logoname objectAtIndex:indexPath.row];
// cell.divider.image = [UIImage imageNamed:#"divider_line.png"]; //for test i commented
cell.divider.backgroundColor = [UIColor blackColor];
return cell;
}
Hope this helps u :)