cellForRowAtIndexPath doesn't trigger - objective-c

Can't understand why cellForRowAtIndexPath is never called, even though numberOfRowsInSection is called
I call this ViewController with
ServerDataController *dataController = [[ServerDataController alloc] initWithNibName:#"ServerDataController" bundle:nil];
[self presentModalViewController:dataController animated:YES];
here is my code:
Header file:
#import <UIKit/UIKit.h>
#interface ServerDataController : UIViewController <NSXMLParserDelegate, NSURLConnectionDelegate, UITableViewDataSource>
{
...
NSMutableArray *items;
UITableView *docsTableView;
}
#property (retain, nonatomic) IBOutlet UITableView *docsTableView;
#property (nonatomic, readonly) NSMutableArray *items;
#end
Implementation file:
#import "ServerDataController.h"
#implementation ServerDataController
#synthesize docsTableView;
#synthesize items;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (id)init
{
self = [super init];
if (self)
{
}
return self;
}
- (void)dealloc {
[items release];
[docsTableView release];
[super dealloc];
}
- (void)viewDidAppear:(BOOL)animated
{
[self fetchEntries];
animated = YES;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
if (self) {
items = [[NSMutableArray alloc] init];
}
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [[self items] 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] autorelease];
}
NSString *cellTitle = [[[[items objectAtIndex:indexPath.row] docUrl] lastPathComponent] stringByDeletingPathExtension];
cell.textLabel.text = cellTitle;
return cell;
}
Any suggestions?

I don't see where you add items to your array, only an init in your viewDidLoad, I think it is empty, so that is why the function is never called. There simply aren't any items to be displayed.

Related

Detail View from TableView, Parsing

Can someone please help me, I looked everywhere to figure this out and nothing worked so far. I need to pass some data from table view to detail view and stick it into labels and Uiimage.
Data tableview is pulling comes from Parse database I created and seems to get pulled fine into the Tableview but I would like to use the same array that tableview is using for its data to fill out the detail view.
I am using 2 columns from parse to fill out this tableview Title and sub, and another tow columns to fill out the label and image. Here is my code so far. There is a bunch of variables that i was using in this code in DetailView
.h
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#interface BooksTableViewController : UITableViewController <UITableViewDelegate,NSObject >
{
NSArray * Booksarray;
}
#property (strong, nonatomic) IBOutlet UITableView *bookstableview;
#end
.m
#import "BooksTableViewController.h"
#import "BookDetailViewController.h"
#interface BooksTableViewController ()
#end
#implementation BooksTableViewController
#synthesize bookstableview;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self performSelector:#selector(RetrieveDatafromParse)];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
-(void) RetrieveDatafromParse {
PFQuery * getbooks = [PFQuery queryWithClassName:#"BooksTableView"];
[getbooks findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if(!error) {
Booksarray =[[NSArray alloc] initWithArray: objects];
}
[bookstableview reloadData];
NSLog(#"%#",objects);
}];
}
- (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 Booksarray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString * CellIdentifier = #"Cell";
UITableViewCell * cell = [bookstableview dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell ==nil) {
cell = [[ UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:#"Cell"];
}
PFObject * tempObject = [Booksarray objectAtIndex:indexPath.row];
cell.textLabel.text = [tempObject objectForKey:#"Books"];
cell.detailTextLabel.text= [tempObject objectForKey:#"Code"];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
BookDetailViewController * detailVC=[[BookDetailViewController alloc] initWithNibName:#"BookDetailViewController" bundle:nil];
detailVC.BookImage.image=[Booksarray objectAtIndex:indexPath.row];
detailVC.bookDesc.text=[Booksarray objectAtIndex:indexPath.row];
detailVC.bookTitle.text=[Booksarray objectAtIndex:indexPath.row];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.destinationViewController isKindOfClass: [BookDetailViewController class]]) {
BookDetailViewController *destination = segue.destinationViewController;
SEL selector = NSSelectorFromString(#"SetFile:");
if ([destination respondsToSelector:selector]) {
NSIndexPath *indexPath = [self.bookstableview indexPathForCell:sender];
PFObject * object = [Booksarray objectAtIndex:indexPath.row];
PFFile *file = [object objectForKey:#"BooksTableView"];
[destination setValue:file forKey:#"file"];
}
}
}
#end
.h
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#interface BookDetailViewController : UIViewController <NSObject> {
}
#property (weak, nonatomic) IBOutlet UIImageView *BookImage;
#property (weak, nonatomic) IBOutlet UILabel *bookTitle;
#property (weak, nonatomic) IBOutlet UILabel *bookDesc;
#property (weak,nonatomic)PFFile *file;
#end
.m
#import "BookDetailViewController.h"
#import "BooksTableViewController.h"
#interface BookDetailViewController ()
#implementation BookDetailViewController
#synthesize BookImage,bookTitle,bookDesc,file,bookInfo,Picture,object2;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self performSelector:#selector(RetrieveObjectsFromParse)];
self.bookTitle.text = [self.file objectForKey:#"Books"];
self.BookImage.image = [self.file objectForKey:#"BookImage"];
self.bookDesc.text =[self.file objectForKey:#"BookDetails"];
}
-(void)RetrieveObjectsFromParse {
PFQuery * GetObjects = [PFQuery queryWithClassName:#"BooksTableView"];
[GetObjects findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if(!error) {
details =[[NSArray alloc] initWithArray: objects];
};
NSLog(#"%#",objects);
}];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#end
Try this:
#1 create a segue from controller to controller:
#2 Give your segue an Id for example detailSegue.
#3 Perform the segue in didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self performSegueWithIdentifier:#"detailSegue" sender:sender];
}
#4 Implement the segue delegate:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Make sure your segue name in storyboard is the same as this line
if([segue.identifier isEqualToString:#"detailSegue"]){
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
BookDetailViewController *detailVC = (BookDetailViewController *)segue.destinationViewController;
detailVC.bookDesc.text=[Booksarray objectAtIndex:indexPath.row];
//I uncommented that because it looks like a typo, same value 3 times?
//detailVC.BookImage.image=[Booksarray objectAtIndex:indexPath.row];
//detailVC.bookTitle.text=[Booksarray objectAtIndex:indexPath.row];
}
}
If this is the log you get:
2014-03-21 15:06:20.151 BookStore[25539:90b]
BookIndex= { BookDetails = "Test
test"; BookImage = ""; Books = Languages; Code =
104; }
Then you need to do it like this instead:
detailVC.bookTitle.text=[[Booksarray objectAtIndex:indexPath.row]objectForKey:#"Books"];
detailVC.bookDesc.text= [[Booksarray objectAtIndex:indexPath.row]objectForKey:#"BookDetails"];
detailVC.BookImage.image=[[Booksarray objectAtIndex:indexPath.row]objectForKey:#"BookImage"];
Or to make it shorter:
NSArray *bookAtIndex = [Booksarray objectAtIndex:indexPath.row];
detailVC.bookTitle.text=[bookAtIndex objectForKey:#"Books"];
detailVC.bookDesc.text= [bookAtIndex objectForKey:#"BookDetails"];
detailVC.BookImage.image=[bookAtIndex objectForKey:#"BookImage"];
or even shorter
NSArray *bookAtIndex = Booksarray[indexPath.row];
detailVC.bookTitle.text= bookAtIndex[#"Books"];
detailVC.bookDesc.text= bookAtIndex[#"BookDetails"];
detailVC.BookImage.image= bookAtIndex[#"BookImage"];

Create a UIPageViewController with a UITableView in each page

I have been reading things on stack overflow for quite a while now but this is my first post, only because it is the first time I have a problem that no one else seems to have fixed yet!
Ok, down to business. It should be a simple matter to put UITableViews inside a UIPageView but I am having difficulties. I have a ViewController and contentViewController. I am using .xibs instead of storyboarding. The contentViewController.xib is a Table View and the ViewController.xib is a View. I am only focusing on iPhone. The UITableView is connected to dataSource, delegate, and Referencing Outlet named theTableView.
The project builds but when I run it I get the following error message:
2013-03-17 16:14:23.026 pageApp[775:c07] *** Assertion failure in -[UITableView layoutSublayersOfLayer:], /SourceCache/UIKit_Sim/UIKit-2380.17/UIView.m:5776
2013-03-17 16:14:23.028 pageApp[775:c07] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Auto Layout still required after executing -layoutSubviews. UITableView's implementation of -layoutSubviews needs to call super.'
*** First throw call stack:
(0x1c93012 0x10d0e7e 0x1c92e78 0xb66665 0x6539f 0x10e46b0 0x228ffc0 0x228433c 0x228feaf 0x1042bd 0x4cb56 0x4b66f 0x4b589 0x4a7e4 0x4a61e 0x4b3d9 0x4e2d2 0xf899c 0x45574 0x4576f 0x45905 0x4e917 0x20eb 0x12157 0x12747 0x1394b 0x24cb5 0x25beb 0x17698 0x1beedf9 0x1beead0 0x1c08bf5 0x1c08962 0x1c39bb6 0x1c38f44 0x1c38e1b 0x1317a 0x14ffc 0x1d2d 0x1c55)
libc++abi.dylib: terminate called throwing an exception
This crashes after -(void)viewDidLoad{} in ViewController.m and I have not yet learned how to fix auto layout/ layoutSubview errors. Does anyone else know how?
I have limited experience with ios development so I am sure that I just don't have the right pieces in the right spots. I used http://www.techotopia.com/index.php/An_Example_iOS_5_iPhone_UIPageViewController_Application to get this far.
My code is as follows:
ViewController.h
#import <UIKit/UIKit.h>
#import "contentViewController.h"
#interface ViewController : UIViewController
<UIPageViewControllerDataSource>
{
UIPageViewController *pageController;
NSArray *pageContent;
}
#property (strong, nonatomic) UIPageViewController *pageController;
#property (strong, nonatomic) NSArray *pageContent;
#end
ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize pageController, pageContent;
- (contentViewController *)viewControllerAtIndex:(NSUInteger)index
{
// Return the data view controller for the given index.
if (([self.pageContent count] == 0) || (index >= [self.pageContent count])) {
return nil;
}
// Create a new view controller and pass suitable data.
contentViewController *dataViewController =[[contentViewController alloc]initWithNibName:#"contentViewController"bundle:nil];
dataViewController.dataObject =[self.pageContent objectAtIndex:index];
return dataViewController;
}
- (NSUInteger)indexOfViewController:(contentViewController *)viewController
{
return [self.pageContent indexOfObject:viewController.dataObject];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger index = [self indexOfViewController:(contentViewController *)viewController];
if ((index == 0) || (index == NSNotFound)) {
return nil;
}
index--;
return [self viewControllerAtIndex:index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger index = [self indexOfViewController:(contentViewController *)viewController];
if (index == NSNotFound) {
return nil;
}
index++;
if (index == [self.pageContent count]) {
return nil;
}
return [self viewControllerAtIndex:index];
}
- (void) createContentPages
{
NSMutableArray *pageStrings = [[NSMutableArray alloc] init];
for (int i = 1; i < 4; i++)
{
NSString *contentString = [[NSString alloc]initWithFormat:#"Chapter %d \nThis is the page %d of content displayed using UIPageViewController in iOS 5.", i, i];
[pageStrings addObject:contentString];
}
pageContent = [[NSArray alloc] initWithArray:pageStrings];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self createContentPages];
self.pageController = [[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
pageController.dataSource = self;
[[pageController view] setFrame:[[self view] bounds]];
contentViewController *initialViewController = [self viewControllerAtIndex:0];
NSArray *viewControllers = [NSArray arrayWithObject:initialViewController];
[pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
[self addChildViewController:pageController];
[[self view] addSubview:[pageController view]];
[pageController didMoveToParentViewController:self];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
contentViewController.h
#import <UIKit/UIKit.h>
#interface contentViewController : UIViewController
#property (strong, nonatomic) IBOutlet UITableView *theTableView;
#property (strong, nonatomic) id dataObject;
#property (strong, nonatomic) NSArray *pageContent;
#end
contentViewController.m
#import "contentViewController.h"
#interface contentViewController ()
#end
#implementation contentViewController
#synthesize theTableView, dataObject, pageContent;
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void) createContentPages
{
NSMutableArray *pageStrings = [[NSMutableArray alloc] init];
for (int i = 1; i < 4; i++)
{
NSString *contentString = [[NSString alloc]initWithFormat:#"Chapter %d \nThis is the page %d of content displayed using UIPageViewController in iOS 5.", i, i];
[pageStrings addObject:contentString];
}
pageContent = [[NSArray alloc] initWithArray:pageStrings];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self createContentPages];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection (NSInteger)section
{
return 4;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath (NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"SimpleTableItem";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
cell.textLabel.text = [pageContent objectAtIndex:indexPath.row];
return cell;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
So if anyone could straighten me out I would appreciate it.
I was able to solve my own problem, and it seems I was just a bit mixed up.
The comment from rdelmar set me on the right track but I hooked the delegate and data source to the wrong object. I had to connect them to File's Owner in order for it to work.
In addition it seems theTableView was not necessary and when I removed that my code suddenly worked as expected.
If this isn't clear enough for an answer please tell me how I can be more specific. Thank you!

tableView doesn't show anything

I'm sure my code is withour mistake, because I have two same tableViews and both with same code, same content and same design. But I don't understand why one of my tableViews is shown, and the other one isn't. I'm using Dynamic Prototype Content, Grouped Style and both tableViews are in container view in other ViewController. Here is code:
table.h
#import <UIKit/UIKit.h>
#interface table : UIViewController <UITableViewDataSource, UITableViewDelegate>
{
NSArray *tabledata;
NSIndexPath* checkedIndexPath;
}
#property (nonatomic, retain) NSArray *tabledata;
#property (nonatomic, assign) int number;
#property (nonatomic, retain) NSIndexPath* checkedIndexPath;
#property (strong, nonatomic) IBOutlet UITableView *tableView;
+(table*)instance;
#property (nonatomic) NSInteger selectedRow;
#end
table.m
#import "table.h"
#interface table ()
#end
#implementation table
#synthesize tabledata;
#synthesize tableView;
#synthesize checkedIndexPath;
#synthesize number;
+(InstrumentsI*)instance {
static table *statInst;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
statInst = [[table alloc] init];
});
return statInst;
}
#synthesize selectedRow;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
tabledata = [[NSArray alloc] initWithObjects:#"row1", #"row2", #"row3", nil];
self.selectedRow = 0;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - TableView Data Source methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [tabledata count];
}
- (UITableViewCell *)tableView:(UITableView *)tableview cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
cell = [tableview dequeueReusableCellWithIdentifier:#"identifer"];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"identifer"];
}
cell.textLabel.text = [tabledata objectAtIndex:indexPath.row];
if (indexPath.row == self.selectedRow)
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
} else {
cell.accessoryType = UITableViewCellAccessoryNone;
}
return cell;
}
#pragma mark TableView Delegate methods
- (void)tableView:(UITableView *)tableview didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[table instance].selectedRow = indexPath.row;
if (indexPath.row != self.selectedRow) {
self.selectedRow = indexPath.row;
}
[tableView reloadData];
}
- (void)viewDidUnload {
[self setTableView:nil];
[super viewDidUnload];
}
#end
Check if you have implemented all the delegates and datasource methods.
Also confirm that you have set your file's owner or controller as delegates and datasource.
Try to reload the tableview after loading the data, like:
- (void)viewDidLoad
{
[super viewDidLoad];
tabledata = [[NSArray alloc] initWithObjects:#"row1", #"row2", #"row3", nil];
self.selectedRow = 0;
[self.tableView reloadData];
}

Preventing parent views UIGestureRecongnizer executing within a UITableVIew subview

Problem:
I have a UIView that has a UITableView as a subview. The UIView has a UITapGestureRecognizer configured.
My Problem is that taps on the table are consumed by the UIView's gesture recognizer. The result is the table view never gets to see taps.
How can I either make the recognizer fail when a point is within the table's frame OR make the table the default consumer of the tap.
I have tried (as the code examples show) a number of methods pointInside:withEvent, hitTest:withEvent but can't quite figure out how to do it.
Here is code representing the problem:
Controller:
#import <UIKit/UIKit.h>
#import "ABCDTableView.h"
#interface ABCDFirstView : UIView
#property (nonatomic,strong) ABCDTableView *tableView;
#end
#import "ABCDFirstView.h"
#implementation ABCDFirstView
#synthesize tableView;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self awakeFromNib];
}
return self;
}
- (void)awakeFromNib
{
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(viewTouch:)];
[self addGestureRecognizer:tap];
}
- (void)viewTouch:(UIGestureRecognizer *)gesture {
NSLog(#"view touched");
}
- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
if (CGRectContainsPoint(self.tableView.bounds, point)) {
NSLog(#"point in table point as well as view");
return NO;
}
else if (CGRectContainsPoint(self.bounds, point)) {
NSLog(#"point only in view");
return YES;
}
NSLog(#"point not in view");
return NO;
}
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
UIView *view = [super hitTest:point withEvent:event];
NSLog(#"view hittest res: %#",view);
return view;
}
#end
TableView
#import <UIKit/UIKit.h>
#interface ABCDTableView : UITableView
<UITableViewDataSource, UITableViewDelegate>
#property (nonatomic, strong) NSArray *list;
#end
#import "ABCDTableView.h"
#implementation ABCDTableView
#synthesize list;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self awakeFromNib];
}
return self;
}
- (void)awakeFromNib
{
self.delegate = self;
self.dataSource = self;
// create table list
self.list = [[NSArray alloc]
initWithObjects: #"one",#"two",#"three",#"four",#"five",
#"six", #"seven", #"eight", #"nine", #"ten", nil];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.list count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = #"cell";
UITableViewCell *cell = [self dequeueReusableCellWithIdentifier:cellID];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
cell.textLabel.text = [self.list objectAtIndex:[indexPath row]];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"row selected");
}
#end
View
#import <UIKit/UIKit.h>
#import "ABCDTableView.h"
#interface ABCDFirstView : UIView
#property (nonatomic,strong) ABCDTableView *tableView;
#end
#import "ABCDFirstView.h"
#implementation ABCDFirstView
#synthesize tableView;
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
[self awakeFromNib];
}
return self;
}
- (void)awakeFromNib
{
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(viewTouch:)];
[self addGestureRecognizer:tap];
}
- (void)viewTouch:(UIGestureRecognizer *)gesture {
NSLog(#"view touched");
}
- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
{
if (CGRectContainsPoint(self.tableView.bounds, point)) {
NSLog(#"point in table point as well as view");
return NO;
}
else if (CGRectContainsPoint(self.bounds, point)) {
NSLog(#"point only in view");
return YES;
}
NSLog(#"point not in view");
return NO;
}
- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
UIView *view = [super hitTest:point withEvent:event];
NSLog(#"view hittest res: %#",view);
return view;
}
#end
Use the UIGestureRecognizerDelegate method
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch;
and check if the touch.view is the same view as the one that should receive the gesture recognizer.

Form sheet with custom split view like UITableView crash when scrolling

I have created a iPad app that has a settings form sheet. The form sheet is using two subviews for create a split view like display. The left (master) UITableView scrolls and launches fine. The error is coming in from when one of the master cells is selected and it displays a UITableView from a UITableViewController into the right(detail) view. It will display the UITableView but once it is scrolled the detail view crashes. Yes I have the list pulling from plist because I want these results be be accessed later in other places of the application.
this is the View Controller for the form sheet and delegate for Master View
.h file
#interface settingsViewController : UIViewController<UITableViewDataSource, UITableViewDelegate>{
UITableView *mainTableView;
NSDictionary *mainSettingList;
NSArray *settingItems;
}
#property (weak, nonatomic) IBOutlet UINavigationBar *settingsNavigationBar;
#property (weak, nonatomic) IBOutlet UITableView *mainTableView;
#property (weak, nonatomic) IBOutlet UIView *borderView;
#property (strong, nonatomic) IBOutlet UIView *detailView;
.m file
#property (nonatomic, strong)NSDictionary *mainSettingList;
#property (nonatomic, strong)NSArray *settingItems;
#end
#implementation settingsViewController
#synthesize settingsNavigationBar = _settingsNavigationBar;
#synthesize mainTableView = _mainTableView;
#synthesize borderView = _borderView;
#synthesize settingItems, mainSettingList;
-(void)viewDidLoad{
[super viewDidLoad];
[self.detailView setFrame:CGRectMake(233, 0, 310, 620)];
[self.borderView setBackgroundColor:[UIColor lightGrayColor]];
[self.view addSubview:self.borderView];
[self.view addSubview:self.detailView];
}
- (IBAction)closePressed:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
-(NSDictionary *)mainSettingList{
if(!mainSettingList){
NSString *str_settingList = [[NSBundle mainBundle]pathForResource:#"settingsList" ofType:#"plist"];
mainSettingList = [NSDictionary dictionaryWithContentsOfFile:str_settingList];
self.mainSettingList = mainSettingList;
}
return mainSettingList;
}
-(NSArray *)settingItems{
if(!settingItems){
settingItems = [[self.mainSettingList allKeys]sortedArrayUsingSelector:#selector(compare:)];
self.settingItems = settingItems;
}
return settingItems;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return self.settingItems.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSArray *wordsInSection = [self.mainSettingList objectForKey:
[self.settingItems objectAtIndex:section]];
return wordsInSection.count;
}
-(NSString *)nameAtIndexPath:(NSIndexPath *)indexPath
{
NSArray *wordsInSection = [self.mainSettingList objectForKey:[self.settingItems objectAtIndex:indexPath.section]];
return [wordsInSection objectAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"AlumniListCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.textLabel.text = [self nameAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [self.settingItems objectAtIndex:section];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UINavigationController *nvc = [[UINavigationController alloc]init];
[nvc.view setFrame:CGRectMake(0,0, 310, 620)];
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
NSString *cellText = selectedCell.textLabel.text;
if([cellText isEqualToString:#"Types of Jumps"]){
TypesOfJumps *toj = [[TypesOfJumps alloc]initWithNibName:#"TypesOfJumps" bundle:nil];
[nvc pushViewController:toj animated:YES];
}
[self.detailView addSubview:nvc.view];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:[NSString stringWithFormat:#"You selected %#!", cellText] delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
return YES;
}
- (void)viewDidUnload {
[self setSettingsNavigationBar:nil];
[self setBorderView:nil];
[self setMainTableView:nil];
[self setSubViewNavigaionBar:nil];
[self setDetailView:nil];
[super viewDidUnload];
}
#end
UITableViewController called by cell pressed method
.h file
#interface TypesOfJumps : UITableViewController<UITableViewDataSource,UITableViewDelegate>{
NSDictionary *listJumps;
NSArray *typesJumps;
}
#property (strong, nonatomic) IBOutlet UITableView *tableView;
.m file
#interface TypesOfJumps ()
#property (strong, nonatomic)NSDictionary *listJumps;
#property (strong, nonatomic)NSArray *typesJumps;
#end
#implementation TypesOfJumps
#synthesize listJumps = _listJumps;
#synthesize typesJumps = _typesJumps;
#synthesize tableView = _tableView;
-(NSDictionary *)listJumps{
if(!listJumps){
NSString *str_settingList = [[NSBundle mainBundle]pathForResource:#"TypesOfJumps" ofType:#"plist"];
listJumps = [NSDictionary dictionaryWithContentsOfFile:str_settingList];
self.listJumps = listJumps;
}
return listJumps;
}
-(NSArray *)typesJumps{
if(!typesJumps){
typesJumps = [[self.listJumps allKeys]sortedArrayUsingSelector:#selector(compare:)];
self.typesJumps = typesJumps;
}
return typesJumps;
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return self.typesJumps.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSArray *wordsInSection = [self.listJumps objectForKey:
[self.typesJumps objectAtIndex:section]];
return wordsInSection.count;
}
-(NSString *)nameAtIndexPath:(NSIndexPath *)indexPath
{
NSArray *wordsInSection = [self.listJumps objectForKey:[self.typesJumps objectAtIndex:indexPath.section]];
return [wordsInSection objectAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"AlumniListCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.textLabel.text = [self nameAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [self.typesJumps objectAtIndex:section];
}