I have a custom UITableViewCell class and would like to display images and strings linearly. For example:
Row 1: [Image1] string1 [Image2] string2 [Image3]
Row 2: [Image4] string3 [Image5]
The images have varying widths but I would like equal spacing. How would I do this? I have tried manipulating subviews and CGRectMake to no avail.
Additionally, I am using an NSDictionary to hold the content and the number of images/string is not constant for each cell.
My CustomCell class:
#import "CustomCell.h"
#implementation CustomCell
#synthesize primaryLabel,secondaryLabel,image1;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if ((self = [super initWithStyle:style reuseIdentifier:reuseIdentifier])) {
// Initialization code
primaryLabel = [[UILabel alloc]init];
primaryLabel.textAlignment = UITextAlignmentLeft;
primaryLabel.font = [UIFont systemFontOfSize:16];
secondaryLabel = [[UILabel alloc]init];
secondaryLabel.textAlignment = UITextAlignmentLeft;
secondaryLabel.font = [UIFont systemFontOfSize:14];
image1 = [[UIImageView alloc]init];
[self.contentView addSubview:primaryLabel];
[self.contentView addSubview:secondaryLabel];
[self.contentView addSubview:image1];
}
return self;
}
- (void)layoutSubviews {
[super layoutSubviews];
CGRect frame;
frame= CGRectMake(0 ,5, 200, 25);
primaryLabel.frame = frame;
frame= CGRectMake(0 ,30, 200, 25);
secondaryLabel.frame = frame;
frame= CGRectMake(0, 60, 23, 20);
image1.frame = frame;
...
My RootViewController
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[CustomCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
// Set up the cell...
NSDictionary *dictionary = nil;
//Search
if (tableView == self.searchDisplayController.searchResultsTableView)
{
dictionary = [self.filteredListContent objectAtIndex:indexPath.row];
}
else
{
dictionary = [self.tableDataSource objectAtIndex:indexPath.row];
}
//Original
cell.primaryLabel.text = [dictionary objectForKey:#"Title"];
for (NSArray *keystroke in [dictionary objectForKey:#"Strokes"]) {
for (int i = 0; i < 2; i++) {
if ([(NSString *)keystroke isEqualToString:#"string1"] || [(NSString *)keystroke isEqualToString:#"string2"]) {
cell.secondaryLabel.text = (NSString *)keystroke;
}
else {
NSString *imageFilePath = [NSString stringWithFormat:#"%#.png", keystroke];
NSLog(#"%#", imageFilePath);
UIImage *myimage = [UIImage imageNamed:imageFilePath];
cell.image1.image = myimage;
}
}
}
return cell;
}
...
Obviously there are a lot of holes here. Primarily, as I loop through my dictionary, I need to move my CustomCell subview right so I can place the images/text next to the previous subview.
You are on the right track. In your UITableViewCell subclass, you will need to override layoutSubviews, define CGRects for each UIImageView or UILabel manually, and set them as the respective view's frame.
Check out CGRectGetMaxX. It will be very useful in this context.
Related
The program has a tableview. Each TableViewCell has a UICollectionView. When user drag and drop the one of the categories label, the program will add a UICollectionViewCell which has a UIView. It works well. However, when user scroll the tableview then the UICollectionView won't render properly. The display is as below.
This is the pic before user scroll the view.
http://cl.ly/image/1P0s3Z0m443t
After user scroll the view, there is a promise overlap the sin. The promise cell shouldn't be there.
http://cl.ly/image/3L2M1s3s3F0X
Here is my code of cellForRowAtIndexPath
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
// Configure the cell..
/*
There is no UITableViewCell in the storyboard
*/
ContentViewCustomTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
UILabel * cellLabel = nil; //The cellLabel is for rendering the bible verses
if (cell==nil) {
cell = [[ContentViewCustomTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
/*
To Make Dynamic Cell Height
*/
cellLabel = [[UILabel alloc] initWithFrame:CGRectZero];
[cellLabel setNumberOfLines:0];
[cellLabel sizeToFit];
[cellLabel setFont:[UIFont systemFontOfSize:FONT_SIZE]];
[cellLabel setTag:1];
[[cell contentView] addSubview:cellLabel];
}
NSString * text = [verseArray objectAtIndex:[indexPath row]];
CGSize constraint = CGSizeMake(CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), 20000.0f);
CGRect rectangular = [text boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:#{NSFontAttributeName: [UIFont systemFontOfSize:FONT_SIZE]} context:nil];
CGSize size = rectangular.size;
/*
When There Are Rows More Than One Screen
*/
if (!cellLabel) {
cellLabel = (UILabel *)[cell viewWithTag:1];
}
cell.CellContent = text;
[cellLabel setText:text];
[cellLabel setFrame:CGRectMake((self.view.frame.size.width*0.39), 0, CELL_CONTENT_WIDTH - (CELL_CONTENT_MARGIN * 2), MAX(size.height, 44.0f))]; //To Locate The Position Of The Label In The Cell
cell.userInteractionEnabled = TRUE;
return cell;
}
And this is ContentViewCustomTableViewCell
#import "ContentViewCustomTableViewCell.h"
#import "AnswerCollectionViewCell.h"
#implementation ContentViewCustomTableViewCell
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
UICollectionViewFlowLayout * layout = [[UICollectionViewFlowLayout alloc] init];
layout.sectionInset = UIEdgeInsetsMake(3, 3, 2, 2);
layout.itemSize = CGSizeMake(30, 10);
layout.scrollDirection = UICollectionViewScrollDirectionVertical;
self.collectionView = [[AFIndexedCollectionView alloc] initWithFrame:CGRectZero
collectionViewLayout:layout];
[self.collectionView registerClass:[AnswerCollectionViewCell class]forCellWithReuseIdentifier:CollectionViewCellIdentifier];
self.collectionView.backgroundColor = [UIColor colorWithRed:0.1 green:0.1 blue:0.1 alpha:0.1];
self.collectionView.showsVerticalScrollIndicator = NO;
[self.contentView addSubview:self.collectionView];
}
return self;
}
- (void)awakeFromNib
{
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
-(void)layoutSubviews
{
[super layoutSubviews];
self.collectionView.frame = CGRectMake(10, 10, 110, 50);
}
-(void)setCollectionViewDataSourceDelegate:(id<UICollectionViewDataSource, UICollectionViewDelegate>)dataSourceDelegate index:(NSInteger)index
{
self.collectionView.dataSource = dataSourceDelegate;
self.collectionView.delegate = dataSourceDelegate;
self.collectionView.index = index;
[self.collectionView reloadData];
}
#end
There is a custom cell. In it there is two labels. One of them called nameLabel's height has to change dynamically. It can be 1,2 or 3 lines sometimes. But the rows are on eachother, they cross their own row lines. How can I solve this problem?
The labels and Custom Cell object's Use Autolayout option is disabled.
The label height has to change dynamic, And then the CustomCell's. And then tableRow. My head is confused. And why can't I see CustomCell's background color is changing?
Thanks
Here is my code for :
- (CGFloat)tableView:(UITableView *)tableView
heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
UILabel *label = [[UILabel alloc] init];
label.numberOfLines = 0; // allows label to have as many lines as needed
label.text = [[self.dataList objectAtIndex:indexPath.row] objectForKey:#"NAME"];
CGSize labelSize = [label.text sizeWithFont:label.font constrainedToSize:CGSizeMake(320, 63) lineBreakMode:NSLineBreakByWordWrapping];
CGFloat h = labelSize.height;
NSInteger x=0.0;
if (h==63.0) x=30;
if (h==42.0) x=20;
if (h==21.0) x=10;
return h+30;
}
- (UITableViewCell*)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = #"cellid";
CustomCell *cell = (CustomCell*)[tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil)
{
cell = (CustomCell*)[[[NSBundle mainBundle]
loadNibNamed:#"CustomCell" owner:nil options:nil]
lastObject];
}
// customization
NSDictionary *d = [self.dataList objectAtIndex:indexPath.row];
cell.nameLabel.text = [d objectForKey:#"NAME"];
cell.cityLabel.text = [d objectForKey:#"CODE"];
cell.indexPath = indexPath;
return cell;
}
At this link there is picture of simulator and xib of the Custom Cell to understand easy the problem:
http://compfreek.wordpress.com/2013/08/14/custom-cell-for-table-row-height-changes-dynamic/
Hear is another way try this change according to ur code it may different, but it may solve your problem.I am putting all views through code only, because it is easy for me check this out.
//in your subclassed class
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Initialization code
//may be u did same i am adding the label to cell
UILabel *nameLabel = [[UILabel alloc]initWithFrame:CGRectZero];
nameLabel.numberOfLines = 5; //set number of lines
nameLabel.tag = 100;
[self addSubview:nameLabel];
UILabel *otherLabel = [[UILabel alloc] initWithFrame:CGRectZero];
otherLabel.tag = 200;
[self addSubview:otherLabel];
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
//do your customisation when cell is selected
}
-(void)layoutSubviews
{
//in this method i am setting the frames for label
[super layoutSubviews];
UILabel *nameLabel = (UILabel *) [self viewWithTag:100];
nameLabel.text = self.nameString;
CGSize maxSize = CGSizeMake(self.bounds.size.width / 2, MAXFLOAT);//set max height
CGSize nameSize = [self.nameString sizeWithFont:[UIFont systemFontOfSize:17]
constrainedToSize:maxSize
lineBreakMode:NSLineBreakByWordWrapping];
nameLabel.frame = CGRectMake(self.bounds.origin.x +2,self.bounds.origin.y+3, nameSize.width, nameSize.height);
UILabel *otherLabel = (UILabel *) [self viewWithTag:200];
otherLabel.frame = CGRectMake(nameLabel.frame.size.width+15,self.bounds.origin.y+3, 100, 40);
otherLabel.text = self.otherString;
}
//in your main class
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:#"CustomCell"];
if(cell == nil)
{
cell = [[[CustomCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"CustomCell"]autorelease];
}
//change it for ur need
NSString *name = #"hear is your long length name uzamaki naruto from uzamaki clan";
NSString *other = #"other name";
cell.nameString = name;
cell.otherString = other;
return cell;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *name = #"hear is your long length name uzamaki naruto from uzamaki clan";
//replace it your height logic
float cellWidth = 350; // ur cell width
CGSize maxSize = CGSizeMake( cellWidth / 2, MAXFLOAT);//set max height
CGSize nameSize = [name sizeWithFont:[UIFont systemFontOfSize:17]
constrainedToSize:maxSize
lineBreakMode:NSLineBreakByWordWrapping];
return nameSize.height + 10;// for ur height
}
I want create one page in way table view. its display 4 cell that different image and name for any cell. (this information get url in loop)
first : I create one class that I can meaning 2 variable.
Recipe.h
#import
#interface Recipe : NSObject
#property (nonatomic, strong) NSString *name; // name of recipe
#property (nonatomic, strong) NSString *imageFile; // image filename of recipe
#end so now in RecipeViewController (root) I write this code :
#import "RecipeViewController.h"
#import "Recipe.h"
#interface RecipeViewController ()
{
IBOutlet UIImageView *ab;
}
#end
#implementation RecipeViewController
{
NSMutableArray *recipes;
NSInteger num;
}
#synthsize ab;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.title = #"Recipe Book";
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStyleBordered target:nil
action:nil];
[[self navigationItem] setBackBarButtonItem:backButton];
NSString *numberbook = [[NSString alloc]initWithContentsOfURL:[NSURL
URLWithString:#"http://192.168.1.102/mamal/book.php?all"]];
NSInteger numbook = [numberbook integerValue];
NSMutableArray *b = [[NSMutableArray alloc]initWithCapacity:numbook];
for (int i = 1; i <= numbook; i++)
{
Recipe *si = [Recipe new];
NSLog(#"%d,%#",i,si);
NSString *c = [[NSString alloc]initWithContentsOfURL:[NSURL URLWithString:[NSString
stringWithFormat:#"http://192.168.1.102/mamal/book.php?info=1&b=%d",i]]];
NSString *a = [NSString stringWithFormat:#"http://192.168.1.102/mamal/book.php?p=1&b=%d",i];
[b addObject:a];
UIImage *myImage = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:a]]];
[ab setImage:myImage];
NSLog(#"%#",a);
NSLog(#"%#",c);
si.name = [NSString stringWithString:c];
si.imageFile =[]; //I so confused!!!
if(!recipes){
recipes = [NSMutableArray array];
}
[recipes addObject:si];
}
num = numbook;
// Remove table cell separator
[self.tableView setSeparatorStyle:UITableViewCellSeparatorStyleNone];
// Assign our own backgroud for the view
self.parentViewController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"common_bg"]];
self.tableView.backgroundColor = [UIColor clearColor];
// Add padding to the top of the table view
UIEdgeInsets inset = UIEdgeInsetsMake(5, 0, 0, 0);
self.tableView.contentInset = inset;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return recipes.count;
}
- (UIImage *)cellBackgroundForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSInteger rowCount = [self tableView:[self tableView] numberOfRowsInSection:0];
NSInteger rowIndex = indexPath.row;
UIImage *background = nil;
if (rowIndex == 0) {
background = [UIImage imageNamed:#"cell_top.png"];
} else if (rowIndex == rowCount - 1) {
background = [UIImage imageNamed:#"cell_bottom.png"];
} else {
background = [UIImage imageNamed:#"cell_middle.png"];
}
return background;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
// Configure the cell...
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// Display recipe in the table cell
Recipe *recipe = [recipes objectAtIndex:indexPath.row];
UIImageView *recipeImageView = (UIImageView *)[cell viewWithTag:100];
recipeImageView.image = [UIImage imageNamed:recipe.imageFile];
UILabel *recipeNameLabel = (UILabel *)[cell viewWithTag:101];
recipeNameLabel.text = recipe.name;
UILabel *recipeDetailLabel = (UILabel *)[cell viewWithTag:102];
recipeDetailLabel.text = recipe.detail;
// Assign our own background image for the cell
UIImage *background = [self cellBackgroundForRowAtIndexPath:indexPath];
UIImageView *cellBackgroundView = [[UIImageView alloc] initWithImage:background];
cellBackgroundView.image = background;
cell.backgroundView = cellBackgroundView;
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
}
#end
I so confused and get this error :
"connection cannot have a prototype object as its destination"
also I don't know one way for display image in cell!!!
cell.imageView.image = yourImage
Try this
cell.yourImage.image = [UIImage imageNamed:#"imageName"];
What I want to achieve is something like this. its kind of Facebook or twitter functionality where you have a tableview in which you have a Thread and the thread contains different number of articles. the number of articles varies in each row. So basically Its like i'm sending a post on facebook and people respond to that post and those posts are added under that particular Thread(I'm just concern about the How to display it every thing else is been taken care).here is the picture
I know how to create cell and all but I don't know how to set its size dynamically. any tutorial or any piece of advise to achieve this??
Any Help is appreciated..
thanks
Perhaps this will help you. I am sending you my code, I am using a Custom Cell , which having an Emial on first index, PhoneNumber on second index and Address on third index (in your case Article). I am dynamically changing the height of Address label in CellForRowAtIndexPath ,,, and also cell height in heightForRowAtIndexPath mehthod. Here is my code.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *identifier = #"FeedCell";
FeedDetailCell *cell = (FeedDetailCell*)[tableView dequeueReusableCellWithIdentifier:identifier];
if (cell==nil) {
cell = (FeedDetailCell*)[[[NSBundle mainBundle] loadNibNamed:#"FeedDetail" owner:nil options:nil] objectAtIndex:0];
}
[tableView setSeparatorColor:[UIColor grayColor]];
switch (indexPath.section) {
case 0:
if (indexPath.row == 0) {
cell.nameLabel.text = #"Telephone";
[cell.detailLabel setText:[_feedDictionary valueForKey:#"mobile"]];
}
else {
cell.nameLabel.text = #"Mobile";
[cell.detailLabel setText:[_feedDictionary valueForKey:#"iPhone"]];
}
break;
case 1:
cell.nameLabel.text = #"E-mail";
[cell.detailLabel setText:[_feedDictionary valueForKey:#"Email"]];
break;
case 2:
cell.nameLabel.text = #"address";
[cell.detailLabel setText:[_feedDictionary valueForKey:#"address"]];
CGSize size = [[_feedDictionary valueForKey:#"address"] sizeWithFont:[UIFont systemFontOfSize:14.0]
constrainedToSize:CGSizeMake(200.0, 400.0) lineBreakMode:UILineBreakModeWordWrap];
CGRect frm = cell.detailLabel.frame;
frm.size.height = size.height;
[cell.detailLabel setFrame:frm];
default:
break;
}
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.section == 2) {
NSString *address = [_feedDictionary valueForKey:#"address"];
CGSize recommendedSize = [address sizeWithFont:[UIFont systemFontOfSize:14] constrainedToSize:CGSizeMake(320, INT_MAX)];
return 44 + recommendedSize.height;
}
else {
return 44;
}
}
You can use this for dynamic cell height
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath*)indexPath;
you can use switch cases and check indexPath.row and indexPath.section to return the required height
take a custom UITableViewCell ,
in .h file
#interface PartnerCell : UITableViewCell {
UILabel *user_name,*lbldate,*lbldesc;
LoadImage *img_trade;
UIImageView *partnerimage;
}
#property (nonatomic, strong) UILabel *user_name,*lbldate,*lbldesc;
#property (nonatomic, strong) LoadImage *img_trade;
#property (nonatomic, strong) UIImageView *partnerimage;
#end
in .m file,
#import "PartnerCell.h"
#implementation PartnerCell
#synthesize user_name,lbldate,lbldesc;
#synthesize img_trade,partnerimage;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
[self setSelectionStyle:UITableViewCellSelectionStyleNone];
user_name = [[UILabel alloc] initWithFrame:CGRectMake(75,8,200,15)];
[user_name setBackgroundColor:[UIColor clearColor]];
user_name.font = [UIFont fontWithName:#"Arial-BoldMT" size:15];
[user_name setTextColor:[UIColor colorWithRed:70/255.00f green:70/255.00f blue:70/255.00f alpha:1.0]];
[self addSubview:user_name];
lbldate = [[UILabel alloc] initWithFrame:CGRectMake(75,28,200,15)];
[lbldate setBackgroundColor:[UIColor clearColor]];
lbldate.font = [UIFont fontWithName:#"Arial" size:14];
[lbldate setTextColor:[UIColor darkGrayColor]];
[self addSubview:lbldate];
lbldesc = [[UILabel alloc] initWithFrame:CGRectMake(75,45,170,35)];
[lbldesc setBackgroundColor:[UIColor clearColor]];
lbldesc.font = [UIFont fontWithName:#"Arial" size:13];
lbldesc.numberOfLines = 2;
[lbldesc setTextColor:[UIColor darkGrayColor]];
[self addSubview:lbldesc];
img_trade = [[LoadImage alloc] initWithFrame:CGRectMake(3, 5, 54, 55)];
img_trade.userInteractionEnabled = YES;
[self addSubview:img_trade];
}
return self;
}
in main table view class write this code,
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = [NSString stringWithFormat:#"%#",[[Partarray objectAtIndex:indexPath.row-1] valueForKey:#"part_id"]];
cell = (PartnerCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell=nil;
if (cell == nil)
{
cell = [[PartnerCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
//cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:[Partarray objectAtIndex:indexPath.row]] autorelease];
cell.selectionStyle= UITableViewCellSelectionStyleGray;
cell.backgroundColor = [UIColor clearColor];
cell.user_name.frame=CGRectMake(75,8,340,15);
cell.lbldate.frame=CGRectMake(75,28,340,15);
cell.lbldesc.frame=CGRectMake(75,45,340,35);
cell.user_name.text = #"user name";
cell.lbldate.text = #"date";
cell.lbldesc.text = #"description";
}
return cell;
}
take condition and add number of objects based on that condition.
I'm kinda new to Objective-C and iPhone development and I've come across a problem when trying to center the text in a table cell. I've searched google but the solutions are for an old SDK bug that has been fixed and these don't work for me.
Some code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text = #"Please center me";
cell.textLabel.textAlignment = UITextAlignmentCenter;
return cell;
}
The above doesn't center the text.
I have also tried the willDisplayCell method:
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
cell.textLabel.textAlignment = UITextAlignmentCenter;
}
and I've tried some of the old posted solutions:
UILabel* label = [[[cell contentView] subviews] objectAtIndex:0];
label.textAlignment = UITextAlignmentCenter;
return cell;
None of these have any effect on the text alignment. I have run out of idea's any help would be most appreciated.
Cheers in advance.
Don't know if it helps your specific problem, however UITextAlignmentCenter does work if you use initWithStyle:UITableViewCellStyleDefault
It doesn't work because the textLabel is only as wide as it needs to be for any given text. (UITableViewCell moves the labels around as it sees fit when set to the UITableViewCellStyleSubtitle style)
You can override layoutSubviews to make sure the labels always fill the cell's entire width.
- (void) layoutSubviews
{
[super layoutSubviews];
self.textLabel.frame = CGRectMake(0, self.textLabel.frame.origin.y, self.frame.size.width, self.textLabel.frame.size.height);
self.detailTextLabel.frame = CGRectMake(0, self.detailTextLabel.frame.origin.y, self.frame.size.width, self.detailTextLabel.frame.size.height);
}
Be sure to keep the height/y-position the same, because as long as the detailTextLabel's text is empty textLabel will be vertically centered.
Use this code:
cell.textLabel.textAlignment = NSTextAlignmentCenter;
Above code will work.
Dont use UITextAlignmentCenter, it is deprecated.
This hack will center the text when using UITableViewCellStyleSubtitle.
Load both text labels with your strings, then do this before returning the cell. It might be simpler to just add your own UILabels to each cell, but I was determined to find another way...
// UITableViewCellStyleSubtitle measured font sizes: 18 bold, 14 normal
UIFont *font = [UIFont boldSystemFontOfSize:18]; // measured after the cell is rendered
CGSize size = [cell.textLabel.text sizeWithFont:font];
CGSize spaceSize = [#" " sizeWithFont:font];
float excess_width = ( cell.frame.size.width - 16 ) - size.width;
if ( cell.textLabel.text && spaceSize.width > 0 && excess_width > 0 ) { // sanity
int spaces_needed = (excess_width/2.0)/spaceSize.width;
NSString *pad = [#"" stringByPaddingToLength:spaces_needed withString:#" " startingAtIndex:0];
cell.textLabel.text = [pad stringByAppendingString:cell.textLabel.text]; // center the text
}
font = [UIFont systemFontOfSize:14]; // detail, measured
size = [cell.detailTextLabel.text sizeWithFont:font];
spaceSize = [#" " sizeWithFont:font];
excess_width = ( cell.frame.size.width - 16 ) - size.width;
if ( cell.detailTextLabel.text && spaceSize.width > 0 && excess_width > 0 ) { // sanity
int spaces_needed = (excess_width/2.0)/spaceSize.width;
NSString *pad = [#"" stringByPaddingToLength:spaces_needed withString:#" " startingAtIndex:0];
cell.detailTextLabel.text = [pad stringByAppendingString:cell.detailTextLabel.text]; // center the text
}
In CustomTableViewCell.m:
- (void)layoutSubviews {
[super layoutSubviews];
self.textLabel.frame = CGRectMake(0, self.textLabel.frame.origin.y, self.contentView.frame.size.width, self.textLabel.frame.size.height);
}
In the method table:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
CustomTableViewCell *cell = (CustomTableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[CustomTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text = #"Title";
cell.textLabel.textAlignment = UITextAlignmentCenter;
return cell;
}
If needed, the same thing can be repeated for self.detailTextLabel
In same situation I created custom UITableViewCell with a custom label:
MCCenterTextCell.h file:
#import <UIKit/UIKit.h>
#interface MCCenterTextCell : UITableViewCell
#property (nonatomic, strong) UILabel *mainLabel;
#end
MCCenterTextCell.m file:
#import "MCCenterTextCell.h"
#interface MCCenterTextCell()
#end
#implementation MCCenterTextCell
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.accessoryType = UITableViewCellAccessoryNone;
self.selectionStyle = UITableViewCellSelectionStyleGray;
_mainLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 5, 320, 30)];
_mainLabel.font = BOLD_FONT(13);
_mainLabel.textAlignment = NSTextAlignmentCenter;
[self.contentView addSubview:_mainLabel];
}
return self;
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated
{
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
#end
You could use code to center text
cell.indentationLevel = 1;
cell.indentationWidth = [UIScreen mainScreen].bounds.size.width/2-10;
In case one wish to align the text to the right, I've had success adapting the solution described here.
cell.transform = CGAffineTransformMakeScale(-1.0, 1.0);
cell.textLabel.transform = CGAffineTransformMakeScale(-1.0, 1.0);
cell.detailTextLabel.transform = CGAffineTransformMakeScale(-1.0, 1.0);
Here is what works for me...
NSString *text = #"some text";
CGSize size = [text sizeWithAttributes:#{NSFontAttributeName:SOME_UIFONT}];
[cell setIndentationLevel:1];
[cell setIndentationWidth:(tableView.frame.size.width - size.width)/2.0f];
cell.textLabel.font = SOME_UIFONT;
[cell.textLabel setText:text];