My tableview parses a calendar RSS Feed. I set up the cell to have a blank calendar icon as the image for every cell, and add subviews for the month and day, which it detects using NSDate from the RSS itself. However, for some reason, it shows 2 cells for every event, and I cannot figure out why. Here is the code for the cell:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
RSSEntry *entry = [_allEntries objectAtIndex:indexPath.row];
NSDateFormatter * dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MM"];
NSString *monthfromdate = [formatter stringFromDate:entry.articleDate];
NSLog(#"%#", monthfromdate);
[formatter release];
NSDateFormatter *formatter2 = [[NSDateFormatter alloc] init];
[formatter2 setDateFormat:#"dd"];
NSString *datefromdate = [formatter2 stringFromDate:entry.articleDate];
NSLog(#"%#", datefromdate);
[formatter2 release];
if ([monthfromdate isEqualToString:#"01"]) {
self.currentmonth = #"January";
}
if ([monthfromdate isEqualToString:#"02"]) {
self.currentmonth = #"February";
}
if ([monthfromdate isEqualToString:#"03"]) {
self.currentmonth = #"March";
}
if ([monthfromdate isEqualToString:#"04"]) {
self.currentmonth = #"April";
}
if ([monthfromdate isEqualToString:#"05"]) {
self.currentmonth = #"May";
}
if ([monthfromdate isEqualToString:#"06"]) {
self.currentmonth = #"June";
}
if ([monthfromdate isEqualToString:#"07"]) {
self.currentmonth = #"July";
}
if ([monthfromdate isEqualToString:#"08"]) {
self.currentmonth = #"August";
}
if ([monthfromdate isEqualToString:#"09"]) {
self.currentmonth = #"September";
}
if ([monthfromdate isEqualToString:#"10"]) {
self.currentmonth = #"October";
}
if ([monthfromdate isEqualToString:#"11"]) {
self.currentmonth = #"November";
}
if ([monthfromdate isEqualToString:#"12"]) {
self.currentmonth = #"December";
}
NSString *currentday = datefromdate;
NSString *articleDateString = [dateFormatter stringFromDate:entry.articleDate];
UIFont *cellFont = [UIFont fontWithName:#"ArialRoundedMTBold" size:15];
UIFont *cellFont2 = [UIFont fontWithName:#"ArialRoundedMTBold" size:12];
UIFont *cellFont3 = [UIFont fontWithName:#"ArialRoundedMTBold" size:9];
UIFont *cellFont4 = [UIFont fontWithName:#"ArialRoundedMTBold" size:18];
UILabel *month = [[UILabel alloc] initWithFrame:CGRectMake(8, 10, 53, 21)];
month.font = cellFont3;
month.text = currentmonth;
month.textAlignment = UITextAlignmentCenter;
month.backgroundColor = [UIColor clearColor];
UILabel *date = [[UILabel alloc] initWithFrame:CGRectMake(11, 21, 50, 45)];
date.font = cellFont4;
date.text = currentday;
date.textAlignment = UITextAlignmentCenter;
date.backgroundColor = [UIColor clearColor];
UIImageView *alternate = [[UIImageView alloc] initWithFrame:CGRectMake(1,1,69,69)];
alternate.image = [UIImage imageNamed:#"calendar1.png"];
alternate.contentMode = UIViewContentModeScaleAspectFit;
UILabel *alternatelabel = [[UILabel alloc] initWithFrame:CGRectMake(82,0,228,53)];
alternatelabel.backgroundColor = [UIColor clearColor];
CALayer * l = [alternate layer];
[l setMasksToBounds:YES];
UILabel *detailLabel = [[UILabel alloc] initWithFrame:CGRectMake(82, 20, 228, 53)];
detailLabel.backgroundColor = [UIColor clearColor];
detailLabel.text = [NSString stringWithFormat:#"%# - %#", articleDateString, entry.blogTitle];
detailLabel.textColor = [UIColor grayColor];
detailLabel.font = cellFont2;
alternatelabel.font = cellFont;
alternatelabel.text = entry.articleTitle;
[cell.contentView addSubview:alternate];
[cell.contentView addSubview:alternatelabel];
[cell.contentView addSubview:detailLabel];
[cell.contentView addSubview:month];
[cell.contentView addSubview:date];
[detailLabel release];
[alternatelabel release];
[alternate release];
}
return cell;
}
You are wrong using cell reusing mechanism. Use this template
#define TAG_MONTH 1001
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
RSSEntry *entry = [_allEntries objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
// any other views can be added to cell here
UILabel *month = [[UILabel alloc] initWithFrame:CGRectMake(8, 10, 53, 21)];
month.font = cellFont3;
month.textAlignment = UITextAlignmentCenter;
month.backgroundColor = [UIColor clearColor];
month.tag = TAG_MONTH;
}
// here you should fill all fields of cell with "entry" or make it empty
NSString currentmonth = #"something";
UILabel *month = [cell.contentView viewWithTag:TAG_MONTH];
month.text = currentmonth;
return cell;
}
Other moments :
you shouldn't init formatter in loop, init it once.
Exctract it into new method
if ([monthfromdate isEqualToString:#"01"]) {
self.currentmonth = #"January";
}
and optimize, it can be simpler
Check the number this method is returning, may be its returning 2
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
Related
Oops,I am facing an issue with table view cells having no image,i.e. the cell with default image.Upon scrolling the default image disappears and some image from a cell is appearing on it.I have implemented the suggestion from Mr.Rckoenes here .Even then I was unable to fix the issue.Here is my implementation code for understanding:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
ReminderClass *reminderToDisplay = [self.remindersArray objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
// Now create the cell to display the data
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellIdentifier] autorelease];
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
cell.textLabel.numberOfLines = 0;
cell.textLabel.font = [UIFont fontWithName:kHelvetica size:17.0];
cell.textLabel.adjustsFontSizeToFitWidth = YES;
cell.backgroundColor = [UIColor clearColor];
}
......
if (Image != nil)
{
UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(240, 3, 70, 63)];
imageView.backgroundColor=[UIColor clearColor];
[imageView setImage:Image];
cell.accessoryView = imageView;
[imageView release];
}
else
{
UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(240, 3, 70, 63)];
imageView.backgroundColor=[UIColor clearColor];
UIImage *defaultImage = [UIImage imageNamed:kDefaultImage];
[imageView setImage:defaultImage];
cell.accessoryView = imageView;
[imageView release];
}
cell.textLabel.text = reminderDetailsString;
return cell;
}
Can any one please help me,thanks in advance :)
just set dequeueReusableCellWithIdentifier to nil and also reuseIdentifier to nil like bellow..
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:nil];
and
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil] autorelease];
and also add your other code in this if (cell == nil) if condition..
UPDATE:
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
NSString *CellIdentifier = [NSString stringWithFormat:#"Cell%d%d",indexPath.section,indexPath.row];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
cell.textLabel.numberOfLines = 0;
cell.textLabel.font = [UIFont fontWithName:kHelvetica size:17.0];
cell.textLabel.adjustsFontSizeToFitWidth = YES;
cell.backgroundColor = [UIColor clearColor];
tableView.backgroundColor = [UIColor clearColor];
NSDateFormatter *dateFormat = [[[NSDateFormatter alloc]init]autorelease];
[dateFormat setDateFormat:kDateFormat];
NSDate *reminderDate = [dateFormat dateFromString:reminderToDisplay.Date];
[dateFormat setDateFormat:kMinDateFormat];
NSString *dateString = [dateFormat stringFromDate:reminderDate];
NSString *valueString = [NSString stringWithFormat:kNameEvent,reminderToDisplay.Name,reminderToDisplay.Event];
NSString *onString = [NSString stringWithFormat:kOn,dateString];
NSString *reminderDetailsString = [valueString stringByAppendingString:onString];
ABAddressBookRef addressbook = ABAddressBookCreate();
CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressbook);
CFIndex numPeople = ABAddressBookGetPersonCount(addressbook);
for (int i=0; i < numPeople; i++)
{
ABRecordRef person = CFArrayGetValueAtIndex(allPeople, i);
NSString *firstName=(NSString *)ABRecordCopyValue(person, kABPersonFirstNameProperty);
NSString *lastName=(NSString *)ABRecordCopyValue(person, kABPersonLastNameProperty);
NSMutableDictionary *contactsDictionary = [[[NSMutableDictionary alloc]init]autorelease];
if(firstName != nil && firstName != NULL)
{
[contactsDictionary setObject:firstName forKey:kFirstName];
CFRelease(firstName);
}
else
{
[contactsDictionary setObject:#"" forKey:kFirstName];
}
if(lastName != nil && lastName != NULL)
{
[contactsDictionary setObject:lastName forKey:kLastName];
CFRelease(lastName);
}
else
{
[contactsDictionary setObject:#"" forKey:kLastName];
}
//Get the first name and last name added to dict and combine it to form contact name
firstName = [[[NSString alloc]initWithString:[contactsDictionary objectForKey:kFirstName]]autorelease];
lastName = [NSString stringWithFormat:#" %#",[contactsDictionary objectForKey:kLastName]];
self.contactName = [firstName stringByAppendingString:lastName];
//Now check whether the contact name is same as your reminderToDisplay.Name
if([reminderToDisplay.Name isEqualToString:contactName] && ABPersonHasImageData(person))
{
CFDataRef imageData = ABPersonCopyImageData(person);
self.reminderImage = [UIImage imageWithData:(NSData *)imageData];
CFRelease(imageData);
}
}
CFRelease(allPeople);
CFRelease(addressbook);
if ([reminderToDisplay.reminderGroup isEqualToString:kFacebook])
{
NSString *imageName = [NSString stringWithFormat:kImageName,reminderToDisplay.Name];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *reminderString=[documentsDirectory stringByAppendingPathComponent:[NSString stringWithString:imageName]];
self.reminderImage = [UIImage imageWithContentsOfFile:reminderString];
}
if (reminderImage != nil)
{
UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(240, 3, 70, 63)];
imageView.backgroundColor=[UIColor clearColor];
[imageView setImage:reminderImage];
cell.accessoryView = imageView;
[imageView release];
}
else
{
UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(240, 3, 70, 63)];
imageView.backgroundColor=[UIColor clearColor];
UIImage *defaultImage = [UIImage imageNamed:kDefaultImage];
[imageView setImage:defaultImage];
cell.accessoryView = imageView;
[imageView release];
}
cell.textLabel.text = reminderDetailsString;
}
return cell;
}
I have an application which is working fine.But i need to be memory leaks free.So i decided to build with analyzer,then i saw so many small small memory management issues.I sorted out almost everything except this.here my cell object is shown as a leaked object,but really i don't know where i was wrong footed.this is my cellforRowatIndexpath method .
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:EventCellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:EventCellIdentifier];
UIImageView* img = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"cell_with_arrow.png"]];
[cell setBackgroundView:img];
[img release];
cell.textLabel.font = [UIFont fontWithName:#"Helvetica-Bold" size:13.0];
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap; // Pre-iOS6 use UILineBreakModeWordWrap
cell.textLabel.numberOfLines =0;
[cell.textLabel sizeToFit];
}
[[cell viewWithTag:12] removeFromSuperview];
[[cell viewWithTag:13] removeFromSuperview];
PTPusherEvent *event = [eventsReceived objectAtIndex:indexPath.row];
//cell.textLabel.text = event.name;
// cell.detailTextLabel.text = [event.data description];
NSDictionary *payload =event.data;
NSLog(#"%#",payload);
NSString *tes=[payload objectForKey:#"from"];
NSString *subtitle = [NSString stringWithString: #"From "];
subtitle = [subtitle stringByAppendingFormat:#"%#",tes];
cell.detailTextLabel.text = subtitle;
cell.textLabel.text = [payload objectForKey:#"message"];
cell.textLabel.backgroundColor = [UIColor clearColor];
cell.detailTextLabel.backgroundColor = [UIColor clearColor];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
// [dateFormat setDateFormat:#"dd-MMM-YYYY HH:mm:ss"];
[dateFormat setDateFormat:#"dd-MMM-YYYY hh:mm a"];
[dateFormat setTimeZone:[NSTimeZone defaultTimeZone]];
NSDate *todaysdate=[NSDate date];
NSString *todaysdateString = [dateFormat stringFromDate:todaysdate];
[dateFormat release];
CGSize boundingSize = CGSizeMake(320, CGFLOAT_MAX);
CGSize requiredSize = [cell.textLabel.text sizeWithFont:cell.textLabel.font
constrainedToSize:boundingSize
lineBreakMode:UILineBreakModeWordWrap];
CGFloat requiredHeight = requiredSize.height;
MarqueeLabel *rateLabelOne = [[MarqueeLabel alloc] initWithFrame:CGRectMake(115, requiredHeight+15,155, 20) rate:50.0f andFadeLength:10.0f];
rateLabelOne.numberOfLines = 1;
rateLabelOne.marqueeType = MLContinuous;
rateLabelOne.opaque = NO;
rateLabelOne.enabled = YES;
rateLabelOne.shadowOffset = CGSizeMake(0.0, -1.0);
rateLabelOne.textAlignment = UITextAlignmentRight;
rateLabelOne.textColor = [UIColor redColor];
rateLabelOne.backgroundColor = [UIColor clearColor];
rateLabelOne.font = [UIFont fontWithName:#"Helvetica-Bold" size:12.000];
rateLabelOne.text = #"OFFline!cannot communicate now.....";
MarqueeLabel *rateLabelTwo = [[MarqueeLabel alloc] initWithFrame:CGRectMake(215, requiredHeight+15,100, 20) rate:50.0f andFadeLength:10.0f];
rateLabelTwo.marqueeType = MLContinuous;
rateLabelTwo.numberOfLines = 1;
rateLabelTwo.opaque = NO;
rateLabelTwo.enabled = YES;
rateLabelTwo.shadowOffset = CGSizeMake(0.0, -1.0);
rateLabelTwo.textAlignment = UITextAlignmentRight;
rateLabelTwo.textColor = [UIColor blueColor];
rateLabelTwo.backgroundColor = [UIColor clearColor];
rateLabelTwo.font = [UIFont fontWithName:#"Helvetica" size:12.000];
rateLabelTwo.text = todaysdateString;
if([chatstatus isEqualToString:#"online"])
{
rateLabelTwo.tag=12;
[cell addSubview:rateLabelTwo];
[rateLabelTwo release];
}
else
{
rateLabelOne.tag=13;
[cell addSubview:rateLabelOne];
[rateLabelOne release];
}
return cell;
}
Can anybody help me to find out where is that monster?
You need to put an autorelease as,
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:EventCellIdentifier] autorelease];
Otherwise it will be leaked.
Update:
As mentioned by AppleDelegate,
[rateLabelTwo release]; and [rateLabelOne release]; also need to be moved out of the if condition so that it will be released in both if and else cases. Analyzer will detect this also as a leak.
OK here's where the issue lies..
if([chatstatus isEqualToString:#"online"])
{
rateLabelTwo.tag=12;
[cell addSubview:rateLabelTwo];
[rateLabelTwo release];
}
else
{
rateLabelOne.tag=13;
[cell addSubview:rateLabelOne];
[rateLabelOne release];
}
In your code the rateLabelOne and rateLabelTow are released within an if loop.The static analyzer analyses it as a leak since it assumes there might be a case where the code doesnt run inside the if loop.Practically its not a leak.
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:EventCellIdentifier]autoRelease];
Use this line:
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:EventCellIdentifier]autorelease];
This will remove your memory leak.
i have a UITableView with custom cells (code below) that load the data from NSDictionary (the NSDictionary loads there data from NSArray objectatIndexPath:indexpath.row.
Now, i have a DidSelectRow functions that works in the same way (NSArray -> NSDictionary -> Cell data).
the problem is that when im scrolling my table its change my cells contant.
i must have my cells always reload that same order. and i must stop this reloading data when scrolling.
This is the code im using to load my table view and load data to table view cells and my didSelectRow: Please help, i dont have time for this problem...
RequestArray = [jsonDictionary objectForKey:#"Content"];
RequestTable = [[UITableView alloc]initWithFrame:CGRectMake(0, 84, 320, 326)];
RequestTable.backgroundColor = [UIColor colorWithRed:(234/255.f) green:(234/255.f) blue:(234/255.f) alpha:1];
RequestTable.dataSource=self;
RequestTable.delegate=self;
RequestTable.rowHeight = 77;
[self.view addSubview:RequestTable];
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SimpleTableIdentifier];
NSDictionary *object = [RequestArray objectAtIndex:indexPath.row];
NSString *Category = [object valueForKey:#"Category"];
NSString *ItemDescription = [object valueForKey:#"ItemDescription"];
NSString *ItemName = [object valueForKey:#"ItemName"];
NSString *Date = [object valueForKey:#"Date"];
NSString *ExpiresDate = [object valueForKey:#"ExpiresDate"];
BOOL isRead = [[object valueForKey:#"IsRead"]boolValue];
/// add time label to cell
NSTimeInterval TIMEinterval = [Date intValue];
NSDate* TIMEDate = [NSDate dateWithTimeIntervalSince1970:TIMEinterval];
NSDateFormatter* df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"HH:mm"];
[df setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:2]]; //+0000
NSString* dateStrig = [df stringFromDate:TIMEDate];
UILabel *RequestTime = [[UILabel alloc]initWithFrame:CGRectMake(268, 8, 33, 16)];
[RequestTime setTextAlignment:UITextAlignmentRight];
RequestTime.backgroundColor = [UIColor clearColor];
RequestTime.textColor = [UIColor blackColor];
[RequestTime setFont:[UIFont systemFontOfSize:12]];
RequestTime.text = dateStrig;
[cell addSubview:RequestTime];
/// add experation label to cell
NSTimeInterval EXPTIMEinterval = [ExpiresDate intValue];
NSDate* EXPDate = [NSDate dateWithTimeIntervalSince1970:EXPTIMEinterval];
NSTimeInterval secondsBetween = [EXPDate timeIntervalSinceDate:TIMEDate];
int numberOfHours = secondsBetween / 3600;
UILabel *ExperationTime = [[UILabel alloc]initWithFrame:CGRectMake(152, 24, 150, 15)];
ExperationTime.backgroundColor = [UIColor clearColor];
[ExperationTime setTextAlignment:UITextAlignmentRight];
ExperationTime.textColor = [UIColor colorWithRed:(255/255.f) green:(103/255.f) blue:(18/255.f) alpha:1];
[ExperationTime setFont:[UIFont systemFontOfSize:14]];
if (numberOfHours>24){
numberOfHours = numberOfHours/24;
ExperationTime.text = [NSString stringWithFormat:#"המוצר דרוש תוך %d ימים",numberOfHours];
}else{
ExperationTime.text = [NSString stringWithFormat:#"המוצר דרוש תוך %d שעות",numberOfHours];
}
[cell addSubview:ExperationTime];
// add item category to cell
UILabel *itamCategory = [[UILabel alloc]initWithFrame:CGRectMake(143 , 5, 120, 21)];
itamCategory.backgroundColor = [UIColor clearColor];
[itamCategory setTextAlignment:UITextAlignmentRight];
itamCategory.textColor = [UIColor colorWithRed:(0/255.f) green:(177/255.f) blue:(233/255.f) alpha:1];
[itamCategory setFont:[UIFont boldSystemFontOfSize:17]];
itamCategory.text = Category;
[cell addSubview:itamCategory];
// add item Name to cell
UILabel *itamName = [[UILabel alloc]initWithFrame:CGRectMake(98, 39, 203, 21)];
itamName.backgroundColor = [UIColor clearColor];
[itamName setTextAlignment:UITextAlignmentRight];
itamName.textColor = [UIColor blackColor];
[itamName setFont:[UIFont boldSystemFontOfSize:17]];
itamName.text = ItemName;
[cell addSubview:itamName];
// add item Description to cell
UILabel *Description = [[UILabel alloc]initWithFrame:CGRectMake(98, 62, 203, 10)];
Description.backgroundColor = [UIColor clearColor];
[Description setTextAlignment:UITextAlignmentRight];
Description.textColor = [UIColor blackColor];
[Description setFont:[UIFont systemFontOfSize:13]];
Description.text =ItemDescription;
[cell addSubview:Description];
//add sendOffer button
UIButton *callSeller = [UIButton buttonWithType:UIButtonTypeCustom];
callSeller.frame = CGRectMake(25, 8, 54, 45);
[callSeller setTag:indexPath.row];
[callSeller setBackgroundImage:[UIImage imageNamed:#"makeOfferTable.png"] forState:UIControlStateNormal];
[callSeller setBackgroundImage:[UIImage imageNamed:#"makeOfferTable.png"] forState:UIControlStateHighlighted];
[callSeller addTarget:self action:#selector(makeaOffer:) forControlEvents:UIControlEventAllEvents];
[cell addSubview:callSeller];
UIView *myBackView = [[UIView alloc] initWithFrame:cell.frame];
myBackView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"highlightCellBG.png"]];
cell.selectedBackgroundView = myBackView;
cell.backgroundColor = [UIColor lightGrayColor];
//add newOffer sign (if new)
if (!isRead){
UIImageView *newIndocator = [[UIImageView alloc]initWithFrame:CGRectMake(295, 0, 25, 25)];
newIndocator.image = [UIImage imageNamed:#"newOfferIndicator.png"];
[newIndocator setContentMode:UIViewContentModeScaleToFill];
[cell addSubview:newIndocator];
}
}
if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
NSDictionary *object = [RequestArray objectAtIndex:indexPath.row];
NSLog(#"indePath.row = %d",indexPath.row);
Seller_RequestDetailsViewController *infoView = [[Seller_RequestDetailsViewController alloc]initWithNibName:#"Seller_RequestDetailsViewController" bundle:nil];
NSString *OfferDate = [object valueForKey:#"Date"];
NSTimeInterval TIMEinterval = [OfferDate intValue];
NSDate* TIMEDate = [NSDate dateWithTimeIntervalSince1970:TIMEinterval];
NSDateFormatter* df = [[NSDateFormatter alloc] init];
[df setDateFormat:#"DD/MM/yyyy"];
[df setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:2]]; //+0000
infoView.date = [df stringFromDate:TIMEDate];
infoView.itemName = [object valueForKey:#"ItemName"];
infoView.modalName = [object valueForKey:#"ItemDegem"];
infoView.buyerID = [NSString stringWithFormat:#"%#",[object valueForKey:#"BuyerUserID"]];
infoView.city = [object valueForKey:#"Region"];
infoView.Offerdescription = [object valueForKey:#"ItemDescription"];
BOOL isRead = [[object valueForKey:#"IsRead"]boolValue];
infoView.modalTransitionStyle = UIModalTransitionStylePartialCurl;
[self presentModalViewController:infoView animated:YES];
if (!isRead){
[self markOfferAsRead:[NSString stringWithFormat:#"%#",[object valueForKey:#"ItemID"]]];
}
}
I am not sure I understand your problem completely but I do see an error in the way you build the cells. After dequeueing the cell, you should only init the cell if it's nil NOT init and build the cell.
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SimpleTableIdentifier];
}
// Now build the cell.
If you don't rebuild the cell every time, it will just reuse the cell that was originally built.
your problem is that everything is with in this:
if(cell == nil) {
//Your Code
}
What is happening is the tableview reuses cells. You are only changing the content if(cell == nil).
What you need is to only create a new cell in side if(cell == nil)
and move the rest of your code out of that if statement
I have a table view that shows 3 data side by side in table ,lets say A(name) , B(roll no) , C(id).
Now if user do search based on A's (search by name) (table get refreshed with name while searching only) value I want to either hide the content of B & C or they should show the correct value while search is on , not the old value which they got before searching.
I couldn't find the solution how to deal with remaining B & C.kindly suggest
here is my code
- (void) searchTableView
{
NSLog(#"search button is down %#",searchBar.text);
NSString *searchText = searchBar.text;
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
if(SearchQuery==1)
{
[searchArray addObjectsFromArray:[entityArray valueForKey:#"Name"]];
}
if(SearchQuery==2)
{
[searchArray addObjectsFromArray:[entityArray valueForKey:#"IC"]];
}
for (NSString *sTemp in searchArray)
{
NSLog(#"copyListOfItems in search -%#",copyListOfItems);//final array for names
NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (titleResultsRange.length > 0)
[copyListOfItems addObject:sTemp];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSManagedObject *object = (NSManagedObject *)[entityArray objectAtIndex:indexPath.row];
NSString *CellIdentifier = #"Cell";
int indicator = UITableViewCellAccessoryNone;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
mainLabel = [[[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 50.0)] autorelease];//220
mainLabel.tag = MAINLABEL_TAG;
[mainLabel setFont:[UIFont fontWithName:#"Helvetica-Bold" size:18]];//Palatino-BoldItalic
mainLabel.textAlignment = UITextAlignmentLeft;
mainLabel.textColor = [UIColor blackColor];
secondLabel = [[[UILabel alloc] initWithFrame:CGRectMake(313.0, 9.0, 200.0, 25.0)] autorelease];//83
secondLabel.tag = SECONDLABEL_TAG;
smallSystemFontSize]]];
[secondLabel setFont:[UIFont fontWithName:#"Helvetica" size:18]];
secondLabel.textAlignment = UITextAlignmentLeft;
secondLabel.textColor = [UIColor blackColor];
[cell.contentView addSubview:secondLabel];
//// 3rd labl display
thirdLabel = [[[UILabel alloc] initWithFrame:CGRectMake(560.0, 9.0, 250.0, 25.0)] autorelease];//83
thirdLabel.tag = THIRDLABEL_TAG;
//thirdLabel.font = [UIFont systemFontOfSize:13.0];
[thirdLabel setFont:[UIFont fontWithName:#"Helvetica" size:18]];//Palatino-BoldItalic
thirdLabel.textAlignment = UITextAlignmentLeft;
thirdLabel.textColor = [UIColor blackColor];
[cell.contentView addSubview:thirdLabel];
}
if(searching)
{
NSLog(#" seacrh List in table view =%#",[copyListOfItems objectAtIndex:indexPath.row]);
// NSString *s=[object valueForKey:#"Name"];
NSLog(#"copyListOfItems length ---------%d",[copyListOfItems count]);
cell.textLabel.text =[copyListOfItems objectAtIndex:indexPath.row] ;
if(SearchQuery==2)
{
secondLabel.text=#"kk";// not working
secondLabel.alpha=1; // this is not working i cant upadate
}
}
else
{
if(self.entityName == #"Parent")
{
{
indicator = UITableViewCellAccessoryDisclosureIndicator;
CellIdentifier = #"CellWithDisclosure";
}
}
if(SearchQuery==2)
{
cell.textLabel.text =[object valueForKey:#"IC"] ;
secondLabel = (UILabel *)[cell.contentView viewWithTag:SECONDLABEL_TAG];
thirdLabel = (UILabel *)[cell.contentView viewWithTag:THIRDLABEL_TAG];
NSLog(#"sex is %# ",[object valueForKey:#"Name"]);
secondLabel.text=[object valueForKey:#"Name"] ;
secondLabel.alpha=0;
thirdLabel.text=[object valueForKey:#"roll"] ;
}
I want to apply a special background to the first cell in my UITableView:
I am applying the bg in:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
This is how it is applied:
if (indexPath.row == 1) {
cell.contentView.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"top-message-bg.png"]];
}
The problem is, when this cell scrolls off screen, a new cell will have indexPath.row == 1. How can I make sure only this cell has this background?
UPDATE: Here is the full method
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
// UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
STVCell *cell = (STVCell*)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (indexPath.row == 0) {
if(mainVideoCell == nil)
{
mainVideoCell = [[MainVideoCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:#"MainVideoCell"];
mainVideoCell.contentView.backgroundColor = [UIColor colorWithRed:242.0/255.0 green:242.0/255.0 blue:242.0/255.0 alpha:1.0];
}
// Configure the cell...
STVideo *mySTVideo;
mySTVideo = [items objectAtIndex:indexPath.row];
mainVideoCell.videoTitle.text = mySTVideo.video_title;
/*NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[formatter setDateStyle:NSDateFormatterShortStyle];
[formatter setTimeStyle:NSDateFormatterNoStyle];
NSString *result = [formatter stringFromDate:[NSDate date]];
[formatter release];*/
mainVideoCell.dateLabel.text = [Utils toShortTimeIntervalStringFromStockTwits:mySTVideo.publish_on]; //result; //[mySTVideo.publish_on substringToIndex:10];//[Utils toShortTimeIntervalStringFromStockTwits:mySTVideo.publish_on];
mainVideoCell.videoDescription.text = mySTVideo.description;
mainVideoCell.authorLabel.text = [NSString stringWithFormat:#"with %#", mySTVideo.author];
[mainVideoCell.videoThumbnail loadImageFromURL:[NSURL URLWithString:mySTVideo.thumbnail_url]];
NSLog(#"Description:%#",mySTVideo.description);
return mainVideoCell;
}
else {
if (cell == nil) {
//cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
cell = [[[STVCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
// Configure the cell...
STVideo *mySTVideo;
mySTVideo = [items objectAtIndex:indexPath.row];
cell.videoTitle.text = mySTVideo.video_title;
/*NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[formatter setDateStyle:NSDateFormatterShortStyle];
[formatter setTimeStyle:NSDateFormatterNoStyle];
NSString *result = [formatter stringFromDate:[NSDate date]];
[formatter release];*/
cell.dateLabel.text = [Utils toShortTimeIntervalStringFromStockTwits:mySTVideo.publish_on];//result; //[mySTVideo.publish_on substringToIndex:10];//[Utils toShortTimeIntervalStringFromStockTwits:mySTVideo.publish_on];
cell.videoDescription.text = mySTVideo.description;
cell.authorLabel.text = [NSString stringWithFormat:#"with %#", mySTVideo.author];
[cell.videoThumbnail loadImageFromURL:[NSURL URLWithString:mySTVideo.thumbnail_url]];
if (indexPath.row == 1) {
cell.contentView.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"top-message-bg.png"]];
}
else {
UIImageView* imageView = [[UIImageView alloc] initWithFrame:CGRectZero];
imageView.image = [[UIImage imageNamed:#"message-bg.png"] stretchableImageWithLeftCapWidth:1 topCapHeight:20];//[[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"message-bg.png"]];
[imageView setOpaque:YES];
[cell setBackgroundView:imageView];
[imageView release];
}
return cell;
}
}
Show us the whole code for cellForRowAtIndexPath please. I suspect that you are simply not configuring the cells correctly. I could be wrong but are you doing this background stuff only when you actually create the cell? Cells are cached so you have to make sure that you set the background to normal for every cell that comes out of the cache.
if (indexPath.row == 1) {
cell.contentView.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"top-message-bg.png"]];
}
else
{
cell.contentView.backgroundColor = // whatever normal background is
}
Sounds like there's something wrong with the way you're reusing your cells. The problem is not that the indexPath.row equals one, but that the cell you created for the row=1 cell is being reused. Perhaps you should add an else condition:
if (indexPath.row == 1) {
cell.contentView.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"top-message-bg.png"]];
}
else {
cell.contentView.backgroundColor = [UIColor whiteColor];
}