Hi there the question i would like to ask is there a way of creating such code in Objective C that will allow me to select a single UICollectionViewCell within a UICollectionViewController and link it to a table view that shows UICollectionViewCell specific content based upon what UICollectionViewCell has been selected without creating hundreds of UITableViewControllers?
A know this is not code but this is what i want the code to achieve if it is possible:
on click of collection view cell dresses show table view.
then on the table view...
if collection view clicked was dresses display dresses table view.
surely this is possible?
Also if possible i would like the code to somehow group things togethers as this will be done on a large scale i have 106 collection view cells that need linking to table views of which need to contain a minimum of 30 TableViewCells each.
I tried your question for getting solution.Finally I successfully got the solution.Below code works perfectly.
In ViewController
.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegate>
#property (strong, nonatomic) IBOutlet UICollectionView *collectionViewSelection;
#end
.m
#import "ViewController.h"
#import "CustomCollectionViewCell.h"
#import "DetailViewController.h"
#interface ViewController ()
{
NSMutableArray *arrayCollectionView;
NSMutableArray *imgArray;
NSMutableArray *lblArray;
}
#end
#implementation ViewController
#synthesize collectionViewSelection;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
imgArray = [NSMutableArray arrayWithObjects:
[UIImage imageNamed:#"casual.png"],
[UIImage imageNamed:#"checked.png"],
[UIImage imageNamed:#"collar.png"],
[UIImage imageNamed:#"formal.png"],
[UIImage imageNamed:#"jean.png"],
[UIImage imageNamed:#"neck.png"],
[UIImage imageNamed:#"pant.png"],nil];
lblArray = [NSMutableArray arrayWithObjects:#"casual",#"checked",#"collar",#"formal",#"jean",#"neck",#"pant", nil];
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
flowLayout.scrollDirection = UICollectionViewScrollDirectionVertical;
UINib *cellNib = [UINib nibWithNibName:#"CustomCollectionViewCell" bundle:nil];
[collectionViewSelection registerNib:cellNib forCellWithReuseIdentifier:#"customCollectionCell"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return [lblArray count];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"customCollectionCell";
CustomCollectionViewCell *cell = (CustomCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
NSLog(#"The current indexPath row is - %ld",(long)indexPath.row);
cell.img_Collection.image = [imgArray objectAtIndex:indexPath.row];
cell.label_Collection.text = [lblArray objectAtIndex:indexPath.row];
cell.tag = indexPath.row;
return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(260, 176);
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"The touched index path os collection cell item row is - %ld",(long)indexPath.row);
DetailViewController *detailsVC = [[DetailViewController alloc]initWithNibName:#"DetailViewController" bundle:nil];
detailsVC.stringLabeldata = [lblArray objectAtIndex:indexPath.row];
detailsVC.imageData = [imgArray objectAtIndex:indexPath.row];
[self.navigationController pushViewController:detailsVC animated:YES];
}
#end
DetailViewController
.h
#import <UIKit/UIKit.h>
#interface DetailViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>
#property (strong, nonatomic) IBOutlet UITableView *tableViewDressesData;
#property (strong, nonatomic) UIImage *imageData;
#property (strong, nonatomic) NSString *stringLabeldata;
- (IBAction)actionBack:(id)sender;
#end
.m
#import "DetailViewController.h"
#import "CustomTableViewCell.h"
#interface DetailViewController ()
#end
#implementation DetailViewController
#synthesize tableViewDressesData;
#synthesize imageData,stringLabeldata;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
NSLog(#"The labeldata is -%#",stringLabeldata);
[tableViewDressesData registerNib:[UINib nibWithNibName:#"CustomTableViewCell" bundle:nil] forCellReuseIdentifier:#"cell"];
[tableViewDressesData reloadData];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
CustomTableViewCell *cell = (CustomTableViewCell *)[tableView dequeueReusableCellWithIdentifier:#"cell"];
if (cell == nil) {
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CustomTableViewCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
cell.imgViewDetail.image = imageData;
cell.labelDetail.text = stringLabeldata;
return cell;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 188;
}
- (IBAction)actionBack:(id)sender
{
[self.navigationController popToRootViewControllerAnimated:YES];
}
#end
Related
I am trying to show images on collectionView. I have trouble showing this images as I have created a reusable cell with imageView inside.Those images have to be equally spaced between as I want to show 3 icons on screen at once. I am using 13 icons and it has to be scrollable horizontally through screen.
I am not able to show image in cell and I do not know how to set image cells with spacing between them using just one reusable cell
CustomCollectionViewCell.h
#interface CustomCollectionViewCell : UICollectionViewCell
#property (nonatomic, retain) UIImageView *imageView;
#end
CustomCollectionViewCell.m
#implementation CustomCollectionViewCell
- (UIImageView *) imageView {
if (!_imageView) {
_imageView = [[UIImageView alloc] initWithFrame:self.contentView.bounds];
[self.contentView addSubview:_imageView];
}
return _imageView;
}
- (void)prepareForReuse {
[super prepareForReuse];
[self.imageView removeFromSuperview];
self.imageView = nil;
}
#end
LandingViewController.m
- (UICollectionViewCell *)collectionView:(UICollectionView *)cv cellForItemAtIndexPath:(nonnull NSIndexPath *)indexPath {
CustomCollectionViewCell *cell = [cv dequeueReusableCellWithReuseIdentifier:#"CustomCell" forIndexPath:indexPath];
return cell;
}
Now OP wants horizontal scrollable direction of Collection view.So Again I created small sample project for this.I put 13 images in horizontal scroll direction.It scrolls successfully on horizontal direction of collection view.
Why I post the horizontal scrollable collectionView here is everyone can understand the answer and get the solution easily.I added extra image I mean exactly 13 images(op wants 13 images into collection view). This answer definitely helps you.
HorizontalScrollableCollectionView
Here I set the scrollDirection as Horizontal in CustomImageFlowLayout.m file
CustomImageFlowLayout.h
#import <UIKit/UIKit.h>
#interface CustomImageFlowLayout : UICollectionViewFlowLayout
#end
CustomImageFlowLayout.m
#import "CustomImageFlowLayout.h"
#implementation CustomImageFlowLayout
- (instancetype)init
{
self = [super init];
if (self)
{
self.minimumLineSpacing = 1.0f;
self.minimumInteritemSpacing = 1.0f;
self.scrollDirection = UICollectionViewScrollDirectionHorizontal;
}
return self;
}
- (CGSize)itemSize
{
NSInteger numberOfColumns;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
numberOfColumns = 3;
else{
if([UIApplication sharedApplication].statusBarOrientation==UIInterfaceOrientationPortrait)
numberOfColumns = 4;
else if([UIApplication sharedApplication].statusBarOrientation == UIDeviceOrientationLandscapeRight || [UIApplication sharedApplication].statusBarOrientation == UIDeviceOrientationLandscapeLeft)
numberOfColumns = 4;
}
NSLog(#"The collection view frame is - %#",NSStringFromCGRect(self.collectionView.frame));
CGFloat itemWidth = (CGRectGetWidth(self.collectionView.frame) - (numberOfColumns - 1)) / numberOfColumns;
NSLog(#"The item width is - %f",itemWidth);
return CGSizeMake(itemWidth, itemWidth);
}
#end
Then CustomCell of UICollectionViewCell
CustomCell.xib
CustomCell.h
#import <UIKit/UIKit.h>
#interface CustomCell : UICollectionViewCell
#property (strong, nonatomic) IBOutlet UIImageView *img;
#property (strong, nonatomic) IBOutlet UILabel *lblCollection;
#end
CustomCell.m
#import "CustomCell.h"
#implementation CustomCell
- (void)awakeFromNib {
[super awakeFromNib];
// Initialization code
}
#end
Now Storyboard design starts
My collection view name is here collectionviewVerticalHorizontalFlowLayout
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UICollectionViewDelegate,UICollectionViewDataSource>
#property (strong, nonatomic) IBOutlet UICollectionView *collectionviewVerticalHorizontalFlowLayout;
#end
ViewController.m
#import "ViewController.h"
#import "CustomCell.h"
#import "CustomImageFlowLayout.h"
#interface ViewController (){
NSMutableArray *arrayImages;
NSMutableArray *arrayTitles;
CustomCell *cell;
}
#end
#implementation ViewController
#synthesize collectionviewVerticalHorizontalFlowLayout;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
collectionviewVerticalHorizontalFlowLayout.collectionViewLayout = [[CustomImageFlowLayout alloc] init];
collectionviewVerticalHorizontalFlowLayout.backgroundColor = [UIColor clearColor];
arrayImages = [[NSMutableArray alloc]initWithObjects:#"iPhone.png", #"android.png", #"windows.png", #"blackberry.png", #"lenovovibek5note.png", #"redmi.png", #"moto.png", #"sony.png", #"samsung.png", #"oneplus.png",#"redminote4.png",#"oppo.png",#"vivo.png",nil];
arrayTitles = [[NSMutableArray alloc]initWithObjects:#"iPhone", #"Android", #"Windows", #"Blackberry", #"LenovaVikeK5Note", #"Redmi", #"MotoG", #"Sony", #"Samsung", #"OnePlus", #"RedMiNote4",#"Oppo",#"Vivo",nil];
UINib *cellNib = [UINib nibWithNibName:#"CustomCell" bundle:nil];
[collectionviewVerticalHorizontalFlowLayout registerNib:cellNib forCellWithReuseIdentifier:#"cell"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//UICollectionView Data Source Methods
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return arrayImages.count;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"cell";
cell = (CustomCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
if(cell==nil){
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
cell = nib[0];
}
cell.img.image = [UIImage imageNamed:(NSString*)[arrayImages objectAtIndex:indexPath.row]];
NSLog(#"The collection view label text is - %#",[NSString stringWithFormat:#"%#",arrayTitles[indexPath.row]]);
cell.lblCollection.text = arrayTitles[indexPath.row];
cell.lblCollection.textColor = [UIColor blackColor];
return cell;
}
//UICollectionView Delegate Method
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"the clicked indexPath.row is - %ld",(long)indexPath.row);
}
#end
Final out put screen shots
First it shows
Then If I scroll horizontally in the collection view it shows
I will give you what you ask.
I wanted to same thing in one application.I successfully implemented this.Just now I tried the sample project for your question.I got what you ask exactly.I show you the code and everything below.
First CustomImageFlowLayout of NSObject Class
CustomImageFlowLayout.h
#import <UIKit/UIKit.h>
#interface CustomImageFlowLayout : UICollectionViewFlowLayout
#end
CustomImageFlowLayout.m
#import "CustomImageFlowLayout.h"
#implementation CustomImageFlowLayout
- (instancetype)init
{
self = [super init];
if (self)
{
self.minimumLineSpacing = 1.0f;
self.minimumInteritemSpacing = 1.0f;
self.scrollDirection = UICollectionViewScrollDirectionVertical;
}
return self;
}
- (CGSize)itemSize
{
NSInteger numberOfColumns;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
numberOfColumns = 3;
else{
if([UIApplication sharedApplication].statusBarOrientation==UIInterfaceOrientationPortrait)
numberOfColumns = 4;
else if([UIApplication sharedApplication].statusBarOrientation == UIDeviceOrientationLandscapeRight || [UIApplication sharedApplication].statusBarOrientation == UIDeviceOrientationLandscapeLeft)
numberOfColumns = 4;
}
NSLog(#"The collection view frame is - %#",NSStringFromCGRect(self.collectionView.frame));
CGFloat itemWidth = (CGRectGetWidth(self.collectionView.frame) - (numberOfColumns - 1)) / numberOfColumns;
NSLog(#"The item width is - %f",itemWidth);
return CGSizeMake(itemWidth, itemWidth);
}
#end
After that I created Custom Cell for Images
See my Design first
CustomCell.h
#import <UIKit/UIKit.h>
#interface CustomCell : UICollectionViewCell
#property (strong, nonatomic) IBOutlet UIImageView *img;
#property (strong, nonatomic) IBOutlet UILabel *lblCollection;
#end
CustomCell.m
#import "CustomCell.h"
#implementation CustomCell
#end
Then I use above class in my ViewController
Below is my Storyboard Design
Here my CollectionView name is collectionViewVertical
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegate,UICollectionViewDelegateFlowLayout>
#property (strong, nonatomic) IBOutlet UICollectionView *collectionViewVertical;
#end
ViewController.m
#import "ViewController.h"
#import "CustomCell.h"
#import "CustomImageFlowLayout.h"
#interface ViewController ()
{
NSMutableArray *arrayImages;
NSMutableArray *arrayTitles;
CustomCell *cell;
}
#end
#implementation ViewController
#synthesize collectionViewVertical;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
collectionViewVertical.collectionViewLayout = [[CustomImageFlowLayout alloc] init];
collectionViewVertical.backgroundColor = [UIColor clearColor];
arrayImages = [[NSMutableArray alloc]initWithObjects:#"iPhone", #"Android", #"Windows", #"Blackberry", #"Lenova", #"Redmi", #"MotoG", #"Sony", #"Samsung", #"OnePlus", nil];
arrayTitles = [[NSMutableArray alloc]initWithObjects:#"iPhone.png", #"android.png", #"windows.png", #"blackberry.png", #"lenovo.png", #"redmi.png", #"moto.png", #"sony.png", #"samsung.png", #"oneplus.png", nil];
UINib *cellNib = [UINib nibWithNibName:#"CustomCell" bundle:nil];
[collectionViewVertical registerNib:cellNib forCellWithReuseIdentifier:#"cell"];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
//UICollectionView Data Source Methods
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
return 1;
}
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return arrayImages.count;
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"cell";
cell = (CustomCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
if(cell==nil){
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"CustomCell" owner:self options:nil];
cell = nib[0];
}
cell.img.image = [UIImage imageNamed:(NSString*)[arrayImages objectAtIndex:indexPath.row]];
cell.lblCollection.text = arrayTitles[indexPath.row];
return cell;
}
//UICollectionView Delegate Method
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"the clicked indexPath.row is - %ld",(long)indexPath.row);
}
Finally the output screen
I created an array of images and CollectionView for displaying 9 images grid. But there is an error while using the image outlet and CollectionView array.I declared it by name myImage and myDescriptionLabel for image inside the cell and label respectively. I have indicated the error by commenting it.
CollectionViewController.h file :-
#import <UIKit/UIKit.h>
#interface CollectionViewController : UICollectionViewController
#property (strong, nonatomic) IBOutlet UICollectionView *myCollectionView;
#property (strong, nonatomic) IBOutlet UIImageView *myImage;
#property (strong, nonatomic) IBOutlet UILabel *myDescriptionLabel;
#end
CollectionViewController.h file :-
#import "CollectionViewController.h"
#interface CollectionViewController ()
{
NSArray *arrayofImages;
NSArray *arrayofDescription;
}
#end
#implementation CollectionViewController
static NSString * const reuseIdentifier = #"Cell";
- (void)viewDidLoad {
[super viewDidLoad];
[[self myCollectionView]setDataSource:self];
[[self myCollectionView]setDelegate:self];
[self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];
arrayofImages=[[NSArray alloc]initWithObjects:#"1.jpeg",#"2.jpeg",#"3.jpeg",#"4.jpg",#"5.jpg",#"6.jpg",#"7.jpeg",#"8.jpg",#"10.jpg", nil];
arrayofDescription = [[NSArray alloc]initWithObjects:#"Image 1",#"Image 2",#"Image 3", #"Image 4",#"Image 5",#"Image 6", #"Image 7", #"Image 8",#"Image 9", nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark <UICollectionViewDataSource>
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return [arrayofDescription count];
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"Cell";
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
[[cell myImage]setImage:[UIImage imageNamed:[arrayofImages object_getIndex:index.item]]];
[[cell myDescriptionLabel]setText:[arrayofDescription object_getIndex:IndexPath.item]];
// Here i Am getting error
return cell;
}
#pragma mark <UICollectionViewDelegate>
#end
try this may be you are wrong here:-
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"Cell";
UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
[[cell self.myImage]setImage:[UIImage imageNamed:[arrayofImages objectAtIndex:index.item]]];
[[cell self.myDescriptionLabel]setText:[arrayofDescription objectAtIndex:IndexPath.item]];
// Here i Am getting error
return cell;
}
First of all I want to apologize for my bad english.
I'm having trouble to set the properties of my custom UITableViewCell (HistoricoCell).
When I try to set a property of my cell I get: Signal SIGABRT error:
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// Dequeue the cell.
HistoricoCell *cell = (HistoricoCell *)[self.tblHistorico dequeueReusableCellWithIdentifier:#"CellIdentifier" forIndexPath:indexPath];
// Fetch Item
NSDictionary *item = [self.dbManager.arrColumnNames objectAtIndex:indexPath.row];
// Configure Table View Cell
[cell.lblCodigo setText:[NSString stringWithFormat:#"%#", item[#"codigo"]]];
[cell.btnFavoritar addTarget:self action:#selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
I followed a lot of tutorials and questions on the web but I stil with my error.
Can someone help me?
My code:
HistoricoCell.h
#import <UIKit/UIKit.h>
#interface HistoricoCell : UITableViewCell
#property (weak, nonatomic) IBOutlet UILabel *lblCodigo;
#property (weak, nonatomic) IBOutlet UIButton *btnFavoritar;
#end
SecondViewController.h
#import <UIKit/UIKit.h>
#interface SecondViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>
#property (weak, nonatomic) IBOutlet UITableView *tblHistorico;
SecondViewController.m
#import "SecondViewController.h"
#import "DBManager.h"
#import "HistoricoCell.h"
#interface SecondViewController ()
#property (nonatomic, strong) DBManager *dbManager;
#property (nonatomic, strong) NSArray *arrPeopleInfo;
-(void)loadData;
#end
#implementation SecondViewController
static NSString *CellIdentifier = #"CellIdentifier";
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// Make self the delegate and datasource of the table view.
self.tblHistorico.delegate = self;
self.tblHistorico.dataSource = self;
// Initialize the dbManager property.
self.dbManager = [[DBManager alloc] initWithDatabaseFilename:#"bernoullidb.sql"];
[self.tblHistorico registerClass:[HistoricoCell class] forCellReuseIdentifier:#"CellIdentifier"];
[self loadData];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)loadData{
// Form the query.
NSString *query = #"select * from tbHistorico";
// Get the results.
if (self.arrPeopleInfo != nil) {
self.arrPeopleInfo = nil;
}
self.arrPeopleInfo = [[NSArray alloc] initWithArray:[self.dbManager loadDataFromDB:query]];
// Reload the table view.
//[self.tblHistorico reloadData];
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.arrPeopleInfo.count;
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
return 60.0;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// Dequeue the cell.
HistoricoCell *cell = (HistoricoCell *)[self.tblHistorico dequeueReusableCellWithIdentifier:#"CellIdentifier" forIndexPath:indexPath];
// Fetch Item
NSDictionary *item = [self.dbManager.arrColumnNames objectAtIndex:indexPath.row];
// Configure Table View Cell
[cell.lblCodigo setText:[NSString stringWithFormat:#"%#", item[#"codigo"]]];
[cell.btnFavoritar addTarget:self action:#selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
- (void)didTapButton:(id)sender {
NSLog(#"%s", __PRETTY_FUNCTION__);
}
#end
You should set cell indentifier "CellIdentifier" for your cell in File Inspector
Or register your nib file if you add cell with nib:
UINib *itemNib = [UINib nibWithNibName:#"yourCell" bundle:nil];
[self.tableView registerNib:itemNib forCellReuseIdentifier:#"yourCellReuseIndentifier"];
I think your problem is in your cell creation: you try to dequeue a cell if it exists (i.e. recycle a previously used cell). that is OK, but, especially when the TableView is displayed for the first time, no previously used cell for this table exists. So, you have to create one if the dequeueReusableCellWithIdentifier call return nil.
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
// Dequeue the cell.
HistoricoCell *cell = (HistoricoCell *)[self.tblHistorico dequeueReusableCellWithIdentifier:#"HistoricoCellIdentifier" forIndexPath:indexPath];
if( cell == nil ) // no queuded cell to dequeue
{
// you have to create a fresh new one
cell = [HistoricoCell alloc] initWithStyle:<your cell style> reuseIdentifier:#"HistoricoCellIdentifier"];
}
// Fetch Item
NSDictionary *item = [self.dbManager.arrColumnNames objectAtIndex:indexPath.row];
// Configure Table View Cell
[cell.lblCodigo setText:[NSString stringWithFormat:#"%#", item[#"codigo"]]];
[cell.btnFavoritar addTarget:self action:#selector(didTapButton:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
Having an issue where the array values do not display in my tableview cells, but can be printed out correctly with NSLog. Thanks in advance for your help!
TableViewCell .h
#import <UIKit/UIKit.h>
#interface TableViewCell : UITableViewCell
#property (strong, nonatomic) IBOutlet UIImageView *image;
#property (strong, nonatomic) IBOutlet UILabel *label;
#end
TableViewController.h
#import <UIKit/UIKit.h>
#interface TableViewController : UITableViewController <UITableViewDataSource, UITableViewDelegate>
#property(nonatomic, strong) NSMutableArray *imagesArray;
#property(nonatomic, strong) NSMutableArray *namesArray;
#end
TableViewController.m
#import "TableViewController.h"
#import "TableViewCell.h"
#interface TableViewController ()
#end
#implementation TableViewController
#synthesize primaryWeaponNames = _primaryWeaponNames;
- (void)viewDidLoad {
[super viewDidLoad];
[self setupArrays];
}
- (void)setupArrays {
_namesArray = [[NSMutableArray alloc] initWithObjects:
#"NAME1", #"NAME2", #"NAME3"
nil];
self.imagesArray = [[NSMutableArray alloc] initWithObjects:
#"IMG1", #"IMG2", #"IMG3"
nil];
}
- (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 _namesArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"TableViewCell";
TableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
cell.nameLabel.text = [NSString stringWithFormat:#"%#", [_namesArray objectAtIndex:indexPath.row]];
NSLog(#"%#", _namesArray[indexPath.row]);
cell.image.image = [self.imagesArray objectAtIndex:indexPath.row];
[cell setAccessoryType: UITableViewCellAccessoryDisclosureIndicator];
return cell;
}
When you make the cell in a xib file, you should register the nib in viewDidLoad. Since you didn't do that, the dequeue method will return nil, and you're just creating a default cell (in the if (cell == nil) clause) instead of your custom cell. The default cell doesn't have a nameLabel or image property, so the lines to set the values of those outlets won't do anything.
[self.tableView registerNib:[UINib nibWithNibName:#"Your nib name here" bundle:nil] forCellReuseIdentifier:#"TableViewCell];
In your TableViewController class, you need to include
self.tableView.delegate = self;
self.tableView.datasource = self;
in your viewDidLoad method. Or you can do this in interface builder by right click dragging the table view in your tableview controller to file's owner and setting delegate, then repeat for datasource
I am trying to show a UIViewController on top of other UIViewcontroller using addChildViewController functionality.The childViewController is a tableView which shows up on top of my MainViewController however I do not see the table view that it has.If I execute the childViewController separately , the tableView works fine , so what am I missing here.
Here's how I am adding a childVC:
#implementation Test2ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (IBAction)showChildVC:(id)sender
{
TestTableViewController *tVC = [[TestTableViewController alloc]init];
tVC.view.frame = CGRectMake(50, 50, 200, 200);
[self addChildViewController:tVC];
[self.view addSubview:tVC.view];
[tVC didMoveToParentViewController:self];
}
And this is the childVC that I want to show: .h
#import <UIKit/UIKit.h>
#interface TestTableViewController : UIViewController<UITableViewDataSource>
{
NSArray *array;
}
#property (weak, nonatomic) IBOutlet UITableView *tableView;
#end
And: .m
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor grayColor];
array = [NSArray arrayWithObjects:#"One",#"Two",#"Three",#"Four", nil];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [array count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
}
cell.textLabel.text = [array objectAtIndex:indexPath.row];
return cell;
}
I see your table view in the second view controller is an IBOutlet, so you are placing it in Storyboard.
Then when you instantiate it, you can't do: [[TestTableViewController alloc]init]; you have to do:
[storyBoard instantiateViewControllerWithIdentifier:#"tVCStoryBoardID"];