My header view in my UICollectionViews seem to double up when scrolling.
Header 1 scrolls up -> Header 2 is now in Header 1 location.
Scroll down and Header 1 now shows Header 1 and Header 2. Here's my code:
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
if ([kind isEqualToString:UICollectionElementKindSectionHeader]) {
UICollectionReusableView *reusableview = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:#"header" forIndexPath:indexPath];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(134, 2, 53, 16)];
label.font = [UIFont fontWithName:#"HelveticaNeue" size:10];
label.text = [NSString stringWithFormat:#"Hole %i", indexPath.section + 1];
[reusableview addSubview:label];
return reusableview;
}
return nil ;
}
I have no idea how to solve this.
You can try this
UILabel *_label;
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView viewForSupplementaryElementOfKind:(NSString *)kind atIndexPath:(NSIndexPath *)indexPath
{
if ([kind isEqualToString:UICollectionElementKindSectionHeader]) {
UICollectionReusableView *reusableview = [collectionView dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader withReuseIdentifier:#"header" forIndexPath:indexPath];
if(_label)
{
[_label removeFromSuperView];
}
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(134, 2, 53, 16)];
label.font = [UIFont fontWithName:#"HelveticaNeue" size:10];
label.text = [NSString stringWithFormat:#"Hole %i", indexPath.section + 1];
[reusableview addSubview:label];
_label=label;
return reusableview;
}
return nil ;
}
Try this sample
- (UICollectionReusableView *)collectionView:(UICollectionView *)collectionView
viewForSupplementaryElementOfKind:(NSString *)kind
atIndexPath:(NSIndexPath *)indexPath {
// You can make header an ivar so we only ever create one
if (!header) {
header = [collectionView dequeueReusableSupplementaryViewOfKind:kind
withReuseIdentifier:#"ident"
forIndexPath:indexPath];
CGRect bounds;
bounds = [header bounds];
UIImageView *imageView;
imageView = [[UIImageView alloc] initWithFrame:bounds];
[imageView setImage:[UIImage imageNamed:#"header-background"]];
// Make sure the contentMode is set to scale proportionally
[imageView setContentMode:UIViewContentModeScaleAspectFill];
// Clip the parts of the image that are not in frame
[imageView setClipsToBounds:YES];
// Set the autoresizingMask to always be the same height as the header
[imageView setAutoresizingMask:UIViewAutoresizingFlexibleHeight];
// Add the image to our header
[header addSubview:imageView];
}
return header;
}
[reusableView makeObjectsPerformSelector:#selector(removeFromSuperview)];
Related
I have a UICollectionView and Im trying to set a label and an image in the collectionViewCell. Unfortunately I cant seem to get any labels to display or anything else for that matter.
Here is my code:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
UILabel *issue = [[UILabel alloc] initWithFrame:CGRectMake(0,10,cell.bounds.size.width,40)];
if(indexPath.item %2 == 0){
cell.backgroundColor=[UIColor blueColor];
issue.text = #"Some Text";
issue.textColor = [UIColor greenColor];
issue.textAlignment = NSTextAlignmentCenter;
}
else {
cell.backgroundColor=[UIColor redColor];
issue.text = #"Some Text";
issue.textColor = [UIColor greenColor];
issue.textAlignment = NSTextAlignmentCenter;
}
}
Unfortunately no label is being displayed and neither is the text in the label.
Updated: I've added the rest of the code from this class file.
#import "ContainerListController.h"
#import "ContainerController.h"
#import "ContainerList.h"
#implementation ContainerListController
//Deallocate temp variables
- (void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
//Initiate objects
- (id)init {
if (self = [super initWithTitle:LocStr(#"CONTAINER_LIST_TITLE") navBarHidden:NO]) {
m_paths = [ContainerList shared].paths;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(onContainerListDidChange)
name:kSDKLauncherContainerListDidChange object:nil];
}
return self;
}
//Load all the views.
- (void)loadView {
//Allocate a UI view
self.view = [[UIView alloc] init];
//Create flow layout
UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
//Force Horizontal Scroll
[layout setScrollDirection:UICollectionViewScrollDirectionHorizontal];
layout.minimumInteritemSpacing =[[UIScreen mainScreen] bounds].size.width;
layout.minimumLineSpacing=0.0;
//Create Collection
UICollectionView *coll =[[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
//Allocations
m_coll = coll;
coll.dataSource =self;
coll.delegate =self;
coll.pagingEnabled = YES;
coll.collectionViewLayout = layout;
//Customize Cells
[coll registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"cellIdentifier"];
[coll setBackgroundColor:[UIColor orangeColor]];
[layout invalidateLayout];
//Create the subview
[self.view addSubview:coll];
//set minimum spacing
/*if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){
NSLog(#"Changed to landscape Spacing");
layout.minimumLineSpacing = 100.0f;
layout.minimumInteritemSpacing = 100.0f;
}
else{
layout.minimumLineSpacing = 40.0f;
layout.minimumInteritemSpacing = 40.0f;
}*/
//Old Layout
//UITableView *table = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
//m_table = table;
//table.dataSource = self;
//table.delegate = self;
//[self.view addSubview:table];
}
- (void)onContainerListDidChange {
m_paths = [ContainerList shared].paths;
[m_table reloadData];
[m_coll reloadData];
}
//Debugging components function
/*-(void)printComps:(NSArray* ) components{
for (NSInteger i =0; i<16; i++) {
NSString * item;
item=components[i];
}
}*/
//old tableview cell
- (UITableViewCell *)
tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:nil];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
NSString *path = [m_paths objectAtIndex:indexPath.row];
NSArray *components = path.pathComponents;
cell.textLabel.text = (components == nil || components.count == 0) ?
#"" : components.lastObject;
return cell;
}
//Old tableView
- (void)
tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
NSString *path = [m_paths objectAtIndex:indexPath.row];
ContainerController *c = [[ContainerController alloc] initWithPath:path];
if (c != nil) {
[self.navigationController pushViewController:c animated:YES];
}
NSLog(#"Selected an item");
}
//old TableView count for epubs
- (NSInteger)
tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section{
return m_paths.count;
}
- (void)viewDidLayoutSubviews {
//m_table.frame = self.view.bounds;
m_coll.frame = self.view.bounds;
}
//Collection View Cell Data Allocation
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
cellForItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
UILabel *issue = [[UILabel alloc] initWithFrame:CGRectMake(0,10,cell.bounds.size.width,40)];
//UICollectionViewCell *content = [[UICollectionViewCell alloc] init];
if(indexPath.item %2 == 0){
cell.backgroundColor=[UIColor blueColor];
issue.text = #"Some Text";
issue.textColor = [UIColor greenColor];
issue.textAlignment = NSTextAlignmentCenter;
}
else {
cell.backgroundColor=[UIColor redColor];
issue.text = #"Some Text";
issue.textColor = [UIColor greenColor];
issue.textAlignment = NSTextAlignmentCenter;
}
NSString *path = [m_paths objectAtIndex:indexPath.row];
NSArray *components = path.pathComponents;
NSString *Title = components.lastObject;
NSLog(#"Title: %#",Title);
NSString *Titletest = components.lastObject;
NSInteger comp1 = components.count;
NSString *comps = #"components";
NSLog(#"There are: %ld %#", (long)comp1,comps);
NSLog(#"Title: %#",Titletest);
for (NSInteger i =0; i<15; i++) {
NSString * item;
item=components[i];
NSLog(#"Component:%ld %#",(long)i,components[i]);
}
return cell;
}
//Collection View Cell Data De-Allocation
- (void)
collectionView:(UICollectionView *)collectionView
numberofItemsInSection:(NSIndexPath *)indexPath{
[collectionView deselectItemAtIndexPath:indexPath animated:YES];
NSString *path = [m_paths objectAtIndex:indexPath.row];
ContainerController *c = [[ContainerController alloc] initWithPath:path];
if(c !=nil){
[self.navigationController pushViewController:c animated:YES];
}
}
//Collection
-(NSInteger)
collectionView:(UICollectionView *)collectionView
numberOfItemsInSection:(NSInteger)section{
return m_paths.count;
}
//Set Collection View Cell Size
-(CGSize)
collectionView:(UICollectionView *) collectionView
layout:(UICollectionViewLayout*)collectionViewLayout
sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
//Set Landscape size of cells
/*if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){
CGFloat cellWidth = [[UIScreen mainScreen] bounds].size.width-360;
CGFloat cellHeigt = [[UIScreen mainScreen] bounds].size.height-60;
NSLog(#"Is Landscape");
return CGSizeMake(cellWidth, cellHeigt);
}
//Set Potrait size of cells
else{
CGFloat cellWidth = [[UIScreen mainScreen] bounds].size.width-60;
CGFloat cellHeigt = [[UIScreen mainScreen] bounds].size.height-160;
NSLog(#"Is Portrait");
return CGSizeMake(cellWidth, cellHeigt);
}*/
return CGSizeMake(collectionView.bounds.size.width, collectionView.bounds.size.height);
}
//Collection View Cell Position
- (UIEdgeInsets)collectionView:
(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
if(UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation)){
return UIEdgeInsetsMake(150.0,0.0,150.0,0.0); // top, left, bottom, right
}
else{
return UIEdgeInsetsMake(20.0,0.0,0.0,0.0); // top, left, bottom, right
}
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation{
[m_coll performBatchUpdates:nil completion:nil];
}
-(void)viewWillTransitionToSize:withTransitionCoordinator{
[m_coll performBatchUpdates:nil completion:nil];
}
/*-(CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)
collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section{
CGFloat cellSpacing = ((UICollectionViewFlowLayout *) collectionViewLayout).minimumLineSpacing;
CGFloat cellWidth = ((UICollectionViewFlowLayout *) collectionViewLayout).itemSize.width;
NSInteger cellCount = [collectionView numberOfItemsInSection:section];
CGFloat inset = (collectionView.bounds.size.width - ((cellCount-1) * (cellWidth + cellSpacing))) * 0.5;
inset = MAX(inset, 0.0);
if(UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)){
NSLog(#"Changed to landscape Spacing");
return inset;
}
else{
return inset;
}
}*/
#end
Clear example to use custom collectionViewCell.
Create a separate class subclass ofUICollectionViewCell see below code:
.h file:
#import <UIKit/UIKit.h>
#interface CollectionViewCell : UICollectionViewCell
#property (weak, nonatomic) IBOutlet UILabel *customLabel;
#end
.m file:
#import "CollectionViewCell.h"
#implementation CollectionViewCell
#end
Now drag and drop the collectionView inside viewController using storyboard then by selecting cell set custom class for it and connect its IBOutlet of label see below image.
Setting up custom class:
Connecting label's outlet: if adding label and other ui component from storyboard
Note: Drag uilabel inside cell before you connect its IBOutlet.
Now configure cell inside your viewController class. And configure collectionView correctly by connecting its delegate, dataSuorce and IBOutlet.
#import "ViewController.h"
#import "CollectionViewCell.h"
#interface ViewController (){
// instance variable deceleration part
NSMutableArray *yourArray;
}
#end
#implementation ViewController
- (void)viewDidLoad{
[super viewDidLoad];
_yourCollView.delegate = self;
_yourCollView.dataSource = self;
yourArray = [[NSMutableArray alloc] initWithObjects:#"1st cell",#"2nd cell",#"3rd cell",#"4th cell", nil];
// Do any additional setup after loading the view, typically from a nib.
}
// collection view delegate methods
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
return [yourArray count];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
CollectionViewCell *cell = (CollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:#"MyCustomCell" forIndexPath:indexPath];
// configuring cell
// cell.customLabel.text = [yourArray objectAtIndex:indexPath.row]; // comment this line if you do not want add label from storyboard
// if you need to add label and other ui component programmatically
UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, cell.bounds.size.width, cell.bounds.size.height)];
label.tag = 200;
label.text = [yourArray objectAtIndex:indexPath.row];
// this adds the label inside cell
[cell.contentView addSubview:label];
return cell;
}
//Note: Above two "numberOfItemsInSection" & "cellForItemAtIndexPath" methods are required.
// this method overrides the changes you have made to inc or dec the size of cell using storyboard.
- (CGSize)collectionView:(UICollectionView *)collectionView layout: (UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath{
return CGSizeMake(100, 100);
}
} // class ends
Setup the cell identifier (by selecting a cell) MyCustomCell you have given inside cellForItemAtIndexPath method before use see below image:
Note: Change the text color of uilabel to white before because by default collectionView appears black.
Hope here you understand.
Create subclass of UICollectionViewCell. For instance TestCollectionViewCell.
In Storyboard drag label in cell and set "Custom class" for this UICollectionViewCell with your created class. Set Reusable identifier, if your collection view in UIViewController don't forget to set DataSource and Delegate for that collectionView.
Connect IBOutlet in your Cell subclass.
Set at least 1 value inside numberOfItemsInSection method.
Then use your subclass of cell in cellForItemAt and try set text for a label.
You are missing the:
[cell.contentView addSubview:issue];
I'm trying to do a UICollectionView of articles that doesn't eats RAM like an elephant. So, the UICollectionView consists of full screen cells that contain one image. If the UICollectionViewCell appears, the content gets loaded in. This is the code:
- (void)viewDidLoad {
UICollectionViewFlowLayout *layout=[[UICollectionViewFlowLayout alloc] init];
layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
layout.itemSize = CGSizeMake(self.view.frame.size.width, self.view.frame.size.height);
layout.minimumInteritemSpacing = 0;
layout.minimumLineSpacing = 0;
_collectionView = [[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:layout];
[_collectionView setDataSource:self];
[_collectionView setDelegate:self];
_collectionView.pagingEnabled = YES;
[_collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"cellIdentifier"];
[_collectionView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:_collectionView];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cellIdentifier" forIndexPath:indexPath];
//add UIImageView here
//add UITextView with tag 123 here
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
UICollectionViewCell *cell = [_collectionView cellForItemAtIndexPath:indexPath];
UITextView *textView = [cell viewWithTag:123];
textView.text = #"Testing this out.";
}
However, this doesn't do anything. No errors are thrown, it just doesn't do anything. What am I doing wrong?
I am trying to have 10 pixels gap between cells and the edge of the screen. I implemented willDisplayCell:forRowAtIndexPath and also the heightForCell since am using two different prototype cells in my table view.
The problem am having is really weird. The cells are only adjusted when i pull the list up, am guessing only when they are reused! check the images please.![enter image description here][1]
This is the initial screen:
https://www.dropbox.com/s/epl2n8a5zohhdmz/Edited.screenShot.01.png?dl=0
This is the screen after the table view is scrolled:
https://www.dropbox.com/s/c81dx9wmaq0mgr5/Edited.screenShot.02.png?dl=0
Here is my code:
- (void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
cell.layer.borderWidth = 5.0f;
cell.layer.borderColor = [UIColor grayColor].CGColor;
cell.layer.cornerRadius = 7.0;
cell.layer.bounds = CGRectMake(0, 0, 260, cell.bounds.size.height - 10);
cell.backgroundColor = [UIColor colorWithRed:207/255.0 green:207/255.0 blue:207/255.0 alpha:1.0];
CGRect cellFrame = CGRectMake(20, cell.frame.origin.y, 280, cell.frame.size.height);
cell.frame = cellFrame;
cell.contentView.frame = cellFrame;
[cell.contentView alignmentRectForFrame:cellFrame];
[cell setNeedsLayout];
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([[self.namesList[indexPath.row] objectForKey:#"Relation"] length] == 0) {
return 69.0;
} else {
return 89.0;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSMutableString *details = [[NSMutableString alloc] init];
UITableViewCell *cell = [[UITableViewCell alloc] init];
UILabel *nameLabel;
UILabel *relationLabel;
UILabel *ageLabel;
UILabel *dayLabel;
UILabel *dateLabel;
Helper *dateConvert = [[Helper alloc] init];
if ([[self.namesList[indexPath.row] objectForKey:#"Relation"] length] == 0) {
cell = [tableView dequeueReusableCellWithIdentifier:#"Cell2" forIndexPath:indexPath];
} else {
cell = [tableView dequeueReusableCellWithIdentifier:#"Cell3" forIndexPath:indexPath];
relationLabel = (UILabel *) [cell viewWithTag:2];
relationLabel.text = [self.namesList[indexPath.row] objectForKey:#"Relation"];
}
nameLabel = (UILabel *) [cell viewWithTag:1];
ageLabel = (UILabel *) [cell viewWithTag:3];
dayLabel = (UILabel *) [cell viewWithTag:4];
dateLabel = (UILabel *) [cell viewWithTag:5];
[details appendString:[self.namesList[indexPath.row] objectForKey:#"Age"]];
[details appendString:#")"];
ageLabel.text = details;
dayLabel.text = [dateConvert getWeekDay:[self.namesList[indexPath.row] objectForKey:#"Date"]];
dateLabel.text = [self.namesList[indexPath.row] objectForKey:#"Date"];
return cell;
}
I have spent days trying to find the problem :( every help is greatly appreciated :)
Why not make your life easier and design the cell in Interface Builder to have the 10 px space already. You can add a UIView, make that 10 px from top, left, right and bottom, then put you UI elements inside of that. I would suggest subclassing your UITableViewCells and have code in those to display your data and set the borders.
I can't set the height of my UITableViewCell according to my constrains.
I have in each cell on my UITableView a UILabel where the height is not fixed and depends of the height of this UILabel.
I tried to set the frame on the cell after I update the label's content but nothing happens. Please find my code below:
//On my controller
- (UITableViewCell *)tableView:(UITableView *)tView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"CommentCell";
CommentCell *commentCell = [tView dequeueReusableCellWithIdentifier:CellIdentifier];
if (commentCell == nil) {
commentCell = [[CommentCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
Comment *comment;
if (commentsArray.count > indexPath.row) {
comment = [commentsArray objectAtIndex:indexPath.row];
}
[commentCell setComment:comment];
[commentCell setCommonFields];
currentCellheight = commentCell.contentLabel.frame.size.height + 40;
DDLogInfo(#"Current Cell Height: %f", currentCellheight);
return commentCell;
}
//On my custom Cell (CommentCell.m)
-(void)setCommonFields {
if (self.comment != nil) {
self.contentLabel.text = self.comment.content;
self.contentLabel.numberOfLines = 0;
CGSize maximumLabelSize = CGSizeMake(self.contentLabel.frame.size.width, FLT_MAX);
CGRect expectedLabelRect = [self.contentLabel.text boundingRectWithSize:maximumLabelSize options:NSStringDrawingUsesLineFragmentOrigin attributes:nil context:nil];
CGRect newFrame = self.contentLabel.frame;
newFrame.size.height = expectedLabelRect.size.height;
self.contentLabel.frame = newFrame;
}
}
I tried also to set the height thanks to the heightForRowAtIndexPath method but this method is called before cellForRowAtIndexPath where my label is updated.
I don't have much more idea to solve this problem.
Thank you in advance.
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"indexPath.row :%ld",(long)indexPath.row);
CGSize contsize={260.00f,3000.00f};
UIFont *font=[UIFont fontWithName:#"Helvetica-Bold" size:15.0];
NSString *strt11=#"hellllllooooooooooooooooooo hellllllooooooooooooooooooo hellllllooooooooooooooooooo";
CGSize fontSize=[strt11 sizeWithFont:font constrainedToSize:contsize lineBreakMode:NSLineBreakByWordWrapping];
NSLog(#"fontSize indexPath :%f",fontSize.height);
if (fontSize.height>22)
return fontSize.height+50.0f;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:#"reuse"];
if(cell==nil)
{
cell=[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"reuse"];
UILabel *lblcomment=[[UILabel alloc] initWithFrame:CGRectMake(55,23, 160,20)];
[lblcomment setBackgroundColor:[UIColor clearColor]];
[lblcomment setTag:72];
[lblcomment setTextColor:[UIColor grayColor]];
[lblcomment setNumberOfLines:0];
[lblcomment setFont:[UIFont fontWithName:#"Helvetica" size:15.0]];
[lblcomment setText:#"Its rude day on goin...Its rude day on goin...Its rude day on goin..."];
[cell addSubview:lblcomment];
}
UILabel *lblcomment=(UILabel *)[cell viewWithTag:72];
CGSize contsize={260.00f,3000.00f};
UIFont *font=[UIFont fontWithName:#"Helvetica-Bold" size:15.0];
NSString *strt11=#"hellllllooooooooooooooooooo hellllllooooooooooooooooooo hellllllooooooooooooooooooo";
CGSize fontSize=[strt11 sizeWithFont:font constrainedToSize:contsize lineBreakMode:NSLineBreakByWordWrapping];
float h=20;
NSLog(#"re %f",fontSize.height);
if (fontSize.height>22.0f){
h=fontSize.height+7.0;
NSLog(#"heigtaaaaa %f",h);
}
[lblcomment setFrame:CGRectMake(55,23,260,h)];
NSString *strDecodeComment=#""hellllllooooooooooooooooooo hellllllooooooooooooooooooo hellllllooooooooooooooooooo";
[lblcomment setText:strDecodeComment];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
return cell;
}
Thanks to Rohit's answer, please find my working code:
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
NSString *content=((Comment *)[commentsArray objectAtIndex:indexPath.row]).content;
CGSize maximumLabelSize = CGSizeMake(234.00f, FLT_MAX);
CGRect expectedLabelRect = [content boundingRectWithSize:maximumLabelSize options:NSStringDrawingUsesLineFragmentOrigin attributes:nil context:nil];
if (expectedLabelRect.size.height > 41) {
return expectedLabelRect.size.height + 81;
}
else
return 81;
}
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.