I have a methods
- (void)viewDidAppear:(BOOL)animated
{
[self updateViews];
}
- (void) updateViews
{
NSInteger itemIndex = [[DataController sharedInstance] indexFromObjectProperty:itemUUID];
if (itemIndex == NSNotFound) {
[self.navigationController popViewControllerAnimated:YES];
}
NSDictionary *item = [[[DataController sharedInstance] getItems] objectAtIndex:itemIndex];
}
I need not to load the view in case itemIndex == NSNotFound but in debug mode this string is called and then the next string is accessing and it causes an exception. How to stop updating view and show root view controller?
There are two ways to easily do this:
Add a return:
- (void) updateViews
{
NSInteger itemIndex = [[DataController sharedInstance] indexFromObjectProperty:itemUUID];
if (itemIndex == NSNotFound) {
[self.navigationController popViewControllerAnimated:YES];
return; // exits the method
}
NSDictionary *item = [[[DataController sharedInstance] getItems] objectAtIndex:itemIndex];
}
or you have other things that you want to accomplish in this method (mainly if this is not the view being popped):
- (void) updateViews
{
NSInteger itemIndex = [[DataController sharedInstance] indexFromObjectProperty:itemUUID];
// nil dictionary
NSDictionary *item;
if (itemIndex == NSNotFound) {
[self.navigationController popViewControllerAnimated:YES];
} else {
// setup the dictionary
item = [[[DataController sharedInstance] getItems] objectAtIndex:itemIndex];
}
// continue updating
}
Related
My Apple TV app lists a collection of PDFs, and clicking one draws it on the screen. For some reason, though, it exits the app completely when someone hits the < / Menu button on the Apple TV Remote. What is going on to cause it to do that?
Up first is the code where it pulls up the list of all the PDFs, followed by the code for displaying the PDF.
-(void)viewDidLoad {
[super viewDidLoad];
self.definesPresentationContext = YES; // know where you want UISearchController to be displayed
}
- (void)viewWillAppear:(BOOL)animated {
if (self.searchControllerWasActive) {
self.searchController.active = self.searchControllerWasActive;
_searchControllerWasActive = NO;
if (self.searchControllerSearchFieldWasFirstResponder) {
[self.searchController.searchBar becomeFirstResponder];
_searchControllerSearchFieldWasFirstResponder = NO;
}
}
NSBundle *bundle = [NSBundle mainBundle];
self.files = [bundle pathsForResourcesOfType:#"pdf" inDirectory:#"AIMPDF"];
NSString *documentsDirectoryPath = [self.files objectAtIndex:thepath.row];
self.title = #"Devo Songs";
self.filenames = [[documentsDirectoryPath lastPathComponent] stringByDeletingPathExtension];
NSLog(#"%#", filenames);
NSMutableArray *names = [NSMutableArray arrayWithCapacity:[self.files count]];
for (NSString *path in self.files) {
[names addObject:[[path lastPathComponent] stringByDeletingPathExtension]];
}
self.files = names;
self.files = [names sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
self.tableView.backgroundColor = [UIColor whiteColor];
self.parentViewController.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"iphonebackground.png"]];
[super viewDidLoad];
[super viewWillAppear:animated];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[searchBar resignFirstResponder];
}
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController {
// update the filtered array based on the search text
NSString *searchText = searchController.searchBar.text;
NSMutableArray *searchResults2 = [self.files mutableCopy];
// strip out all the leading and trailing spaces
NSString *strippedString = [searchText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
// break up the search terms (separated by spaces)
NSArray *searchItems = nil;
if (strippedString.length > 0) {
searchItems = [strippedString componentsSeparatedByString:#" "];
}
// build all the "AND" expressions for each value in the searchString
//
NSMutableArray *andMatchPredicates = [NSMutableArray array];
for (NSString *searchString in searchItems) {
NSPredicate *sPredicate =
[NSPredicate predicateWithFormat:#"SELF contains[c] %#", searchString];
[searchResults2 filterUsingPredicate:sPredicate];
// at this OR predicate to our master AND predicate
// NSCompoundPredicate *orMatchPredicates = [NSCompoundPredicate orPredicateWithSubpredicates:searchItemsPredicate];
//[andMatchPredicates addObject:orMatchPredicates];
}
// match up the fields of the Product object
// NSCompoundPredicate *finalCompoundPredicate =
//[NSCompoundPredicate andPredicateWithSubpredicates:andMatchPredicates];
//searchResults2 = [[searchResults filteredArrayUsingPredicate:finalCompoundPredicate] mutableCopy];
// hand over the filtered results to our search results table
APLResultsTableController *tableController = (APLResultsTableController *)self.searchController.searchResultsController;
tableController.filteredProducts = searchResults2;
[tableController.tableView reloadData];
}
- (void)handleSearchForTerm:(NSString *)searchTerm
{
[self setSavedSearchTerm:searchTerm];
if ([self searchResults] == nil)
{
NSMutableArray *array = [[NSMutableArray alloc] init];
[self setSearchResults:array];
array = nil;
}
[[self searchResults] removeAllObjects];
if ([[self savedSearchTerm] length] != 0)
{
for (NSString *currentString in [self files])
{
if ([currentString rangeOfString:searchTerm options:NSCaseInsensitiveSearch].location != NSNotFound)
{
[[self searchResults] addObject:currentString];
}
}
}
}- (void)viewDidUnload
{
[super viewDidUnload];
// Save the state of the search UI so that it can be restored if the view is re-created.
[self setSavedSearchTerm:[[[self searchDisplayController] searchBar] text]];
[self setSearchResults:nil];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 30200
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad )
{
// The device is an iPad running iPhone 3.2 or later.
return YES;
}
else
{
// The device is an iPhone or iPod touch.
return YES;
}
#else
// iPhone simulator
return YES;
#endif
}
#pragma mark -
#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.
NSInteger rows;
rows = [[self files] count];
return rows;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *filename = [[[self.files objectAtIndex:indexPath.row] lastPathComponent] stringByDeletingPathExtension];
NSInteger row = [indexPath row];
NSString *contentForThisRow = nil;
contentForThisRow = filename;
static NSString *CellIdentifier = #"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
[[cell textLabel] setText:contentForThisRow];
cell.textLabel.font = [UIFont fontWithName:#"Helvetica Neue" size:90];
cell.textLabel.textColor = [UIColor blackColor];
cell.backgroundColor = [UIColor lightGrayColor];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
return 80;
}
else {
return 120;
}
}
- (void)tableView:(UITableView *)tableView didUpdateFocusInContext:(UITableViewFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
//this gives you the indexpath of the focused cell
NSIndexPath *nextIndexPath = [context nextFocusedIndexPath];
NSLog(#"Do Something");
}
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
self.selectedCountry = (tableView == self.tableView) ?
self.files[indexPath.row] : self.resultsTableController.filteredProducts[indexPath.row];
[self performSegueWithIdentifier:#"ShowSong" sender:self];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Make sure your segue name in storyboard is the same as this line
if ([[segue identifier] isEqualToString:#"ShowSong"])
{
NSLog(#"Selecting %#", self.selectedCountry);
FirstViewController* userViewController = [segue destinationViewController];
userViewController.selectedCountry = self.selectedCountry;
//if you need to pass data to the next controller do it here
}
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc. that aren't in use.
}
- (void)dealloc {
}
#end
And now the code for opening:
#implementation FirstViewController
- (CGPDFDocumentRef)openPDFLocal:(NSString *)pdfURL {
NSURL* NSUrl = [NSURL fileURLWithPath:pdfURL];
return [self openPDF:NSUrl];
}
- (CGPDFDocumentRef)openPDFURL:(NSString *)pdfURL {
NSURL* NSUrl= [NSURL URLWithString:pdfURL];
return [self openPDF:NSUrl];
}
- (CGPDFDocumentRef)openPDF:(NSURL*)NSUrl {
CFURLRef url = (CFURLRef)CFBridgingRetain(NSUrl);
CGPDFDocumentRef myDocument;
myDocument = CGPDFDocumentCreateWithURL(url);
if (myDocument == NULL) {
NSLog(#"can't open %#", NSUrl);
CFRelease (url);
return nil;
}
CFRelease (url);
if (CGPDFDocumentGetNumberOfPages(myDocument) == 0) {
CGPDFDocumentRelease(myDocument);
return nil;
}
return myDocument;
}
- (void)drawDocument:(CGPDFDocumentRef)pdfDocument
{
// Get the total number of pages for the whole PDF document
int totalPages= (int)CGPDFDocumentGetNumberOfPages(pdfDocument);
self.pages = totalPages;
NSMutableArray *pageImages = [[NSMutableArray alloc] init];
// Iterate through the pages and add each page image to an array
for (int i = 1; i <= totalPages; i++) {
// Get the first page of the PDF document
CGPDFPageRef page = CGPDFDocumentGetPage(pdfDocument, i);
CGRect pageRect = CGPDFPageGetBoxRect(page, kCGPDFMediaBox);
// Begin the image context with the page size
// Also get the grapgics context that we will draw to
UIGraphicsBeginImageContext(pageRect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
// Rotate the page, so it displays correctly
CGContextTranslateCTM(context, 0.0, pageRect.size.height);
CGContextScaleCTM(context, 1.0, -1.0);
CGContextConcatCTM(context, CGPDFPageGetDrawingTransform(page, kCGPDFMediaBox, pageRect, 0, true));
// Draw to the graphics context
CGContextDrawPDFPage(context, page);
// Get an image of the graphics context
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[pageImages addObject:image];
}
// Set the image of the PDF to the current view
[self addImagesToScrollView:pageImages];
}
-(void)addImagesToScrollView:(NSMutableArray*)imageArray {
int heigth = 0;
for (UIImage *image in imageArray) {
UIImageView *imgView = [[UIImageView alloc] initWithImage:image];
imgView.frame=CGRectMake(200, heigth, 1520, 1080);
[_scrollView addSubview:imgView];
heigth += imgView.frame.size.height;
}
}
-(void)viewDidLayoutSubviews {
NSLog(#"%ld", (long)self.pages);
_scrollView.contentSize = CGSizeMake(1920, 1080*self.pages);
}
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"DOCUMENTS%#", self.selectedCountry);
NSString *testing = [self.selectedCountry stringByAppendingString:#".pdf"];
//This is passed in from a tableview after selecting the PDF needed.
_scrollView.panGestureRecognizer.allowedTouchTypes = #[ #(UITouchTypeIndirect) ];
NSString *Documents = [[NSBundle mainBundle] pathForResource:self.selectedCountry ofType:#"pdf" inDirectory:#"AIMPDF"];
NSLog(#"OKOKOK%#", Documents);
NSURL *url = [NSURL fileURLWithPath:Documents];
self.view.backgroundColor = [UIColor blackColor];
CGPDFDocumentRef pdfDocument = [self openPDF:url];
[self drawDocument:pdfDocument];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
In your case the searching view controller stays on the top level of your app that's why the app is closed by pressing Menu button instead of returning to your start screen. On tvOS you should not use UISearchController directly and call
[self.searchController.searchBar becomeFirstResponder]; or self.searchController.active = YES; to present searching because it breaks a stacked view hierarchy that allows you to navigate upper by presented view controllers.
On Apple TV, people typically navigate by moving through stacked screens of content. Each screen may present entry points to other screens, and provides a way — through the remote — to return to the previous screen or main menu.
https://developer.apple.com/design/human-interface-guidelines/tvos/app-architecture/navigation/
There is UISearchContainerViewController view controller that manages the presentation of search results in your interface and you can use it for searching:
In tvOS, rather than push a UISearchController onto a navigation controller’s stack or use one as a child of another container view controller, embed an instance of this class and let it manage the presentation of the search controller’s content. https://developer.apple.com/documentation/uikit/uisearchcontainerviewcontroller
For instance:
UITableViewController* searchTableViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"SearchTableViewController"];
UISearchController* searchController = [[UISearchController alloc] initWithSearchResultsController:searchTableViewController];
searchController.delegate = self;
searchController.searchResultsUpdater = self;
searchController.searchBar.delegate = self;
self.searchContainerViewController = [[UISearchContainerViewController alloc] initWithSearchController:searchController];
// Show searching
[self presentViewController:self.searchContainerViewController animated:YES completion:nil];
I'm new to xcode and I don't understand how I'm supposed to tell why the app is crashing from this report. When I click "Open in project" it takes me to a place in the code with little information to work on.
Picture of crash report
- (void)didTapOnJobTableView:(UIGestureRecognizer *)recognizer {
CGPoint tapLocation = [recognizer
locationInView:self.tableViewJobList];
NSIndexPath *indexPath = [self.tableViewJobList
indexPathForRowAtPoint:tapLocation];
if (indexPath && indexPath.row >= 0 && indexPath.row <
[self.dispatchTable count]) {
SDMobileAppDelegate *appDelegate = [SDMobileAppDelegate me];
Dispatch *d = [self.dispatchTable objectAtIndex:indexPath.row];
<<<<Last exception backtrace here
if (d != nil && ![d isCancelled]) {
JobListTableViewCell *cell = (JobListTableViewCell *)
[self.tableViewJobList cellForRowAtIndexPath:indexPath];
CGPoint tapLocalzied = [recognizer locationInView:cell];
if (CGRectContainsPoint([cell.labelPrts frame], tapLocalzied)) {
if ([d.prtsPckQty integerValue] > 0) {
dispatchForPartsPick = d;
NSMutableString *partsPickText = [NSMutableString
stringWithString:#""];
NSArray *list = [PartsPick getListFromDatabase:self.db
forDispatch:dispatchForPartsPick];
for (PartsPick *p in list) {
NSString *location = #"";
if (![Utilities isEmpty:p.binLoc]) {
location = [NSString stringWithFormat:#"[at %#]", p.binLoc];
}
[partsPickText appendFormat:#"%# %# %# %#\r\n", p.qty,
location, [p.prtNmbr stringByTrimmingCharactersInSet:[NSCharacterSet
whitespaceAndNewlineCharacterSet]], p.dscrptn];
if (![Utilities isEmpty:p.notes]) {
[partsPickText appendFormat:#"%#\r\n", p.notes];
}
[partsPickText appendString:#"\r\n"];
}
[ShowTextViewController show:self request:SEGUE_PARTSPICK_PREVIEW
header:[NSString stringWithFormat:lStr(#"PARTSPICK_PREVIEW"),
dispatchForPartsPick.invNmbr] message:#"" defaultText:partsPickText
editable:NO autoCap:UITextAutocapitalizationTypeNone delegate:nil];
} else {
[Utilities showOkAlertWithTitle:lStr(#"PTA")
andMessage:lStr(#"PARTSPICK_PREVIEW_NONE") onComplete:nil];
}
} else {
if ([Utilities allowedToGoToJob: d]) {
appDelegate.selectedDispatch = [NSNumber
numberWithLong:indexPath.row];
self.tabBarController.selectedIndex = 1;
} else {
[Utilities showOkAlertWithTitle:#"Cannot Continue"
andMessage:#"Cannot select until previous PVR is completed."
onComplete:nil];
}
}
} else {
[Utilities showOkAlertWithTitle:lStr(#"PTA")
andMessage:lStr(#"JOB_CANCELLED_CANNOT_SELECT") onComplete:nil];
}
}
}
Here is the code where this the above is used, specifically the gesture recognizer part:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self refresh];
XLog(#"Job List View will appear");
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(didTapOnJobTableView:)];
[self.tableViewJobList addGestureRecognizer:tap];
// startup the ticker
self.countdownTimer = [NSTimer scheduledTimerWithTimeInterval:1
target:self selector:#selector(countdownTimer:) userInfo:nil
repeats:YES];
SDMobileAppDelegate *appDelegate = [SDMobileAppDelegate me];
NSTimeInterval diff = [[appDelegate.refreshTimer fireDate]
timeIntervalSinceNow];
if (diff > 60) {
self.buttonForceRefresh.enabled = YES;
self.buttonForceRefresh.titleLabel.enabled = YES;
}
[self setTimeCardStatus];
}
That has lots of information to work with; you just don't know what it means yet. Been there - it's frustrating at times...
See Ray Wenderlich's site and Apple's docs to get started debugging:
https://www.raywenderlich.com/10209/my-app-crashed-now-what-part-1
https://www.raywenderlich.com/10505/my-app-crashed-now-what-part-2
"Unrecognized Selector" or "Does not respond to selector" means the object being called doesn't understand or can't find the method you're trying to call.
When that message is related to the user interface or interaction, it often means you forgot to hook up the IBOutlet or IBAction from the UI element to the code, or there's a typo in the names somewhere, or the method you're trying to call doesn't exist (or isn't publicly exposed) in the object being called.
Make sure you've hooked up your elements from interface builder to the code for the class, that the names are consistent, and that the method didTapOnJobTableViewactually exists in the class JobListViewController.
I would like to display the urls from a table view in a QLPreviewPanel but i got this error:
[QL] QLError(): -[QLPreviewPanel reloadData] called while the panel
has no controller - Fix this or this will raise soon.
My table controller already conform to this two protocols : QLPreviewPanelDataSource, QLPreviewPanelDelegate.
How can i set the controller of [QLPreviewPanel sharedPreviewPanel] as my table controller?
- (void)didPressSpacebarForTableView:(NSTableView *)tableView {
NSLog(#"Spacebar clicked");
if ([QLPreviewPanel sharedPreviewPanelExists] && [[QLPreviewPanel sharedPreviewPanel] isVisible]) {
[[QLPreviewPanel sharedPreviewPanel] orderOut:nil];
} else {
[[QLPreviewPanel sharedPreviewPanel] reloadData];
[[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFront:nil];
}
}
- (NSInteger)numberOfPreviewItemsInPreviewPanel:(QLPreviewPanel *)panel {
return [[(PasteboardItem *)[[_arrayController arrangedObjects] objectAtIndex:[_tableView selectedRow]] filenames] count];
}
- (id<QLPreviewItem>)previewPanel:(QLPreviewPanel *)panel previewItemAtIndex:(NSInteger)index {
NSString *path = [(PasteboardItem *)[[_arrayController arrangedObjects] objectAtIndex:[_tableView selectedRow]] filenames][index];
NSURL *url = [NSURL fileURLWithPath:path];
return url;
}
- (BOOL)acceptsPreviewPanelControl:(QLPreviewPanel *)panel {
return YES;
}
-(void)beginPreviewPanelControl:(QLPreviewPanel *)panel {
panel.dataSource = self;
panel.delegate = self;
}
- (void)endPreviewPanelControl:(QLPreviewPanel *)panel {
panel.dataSource = nil;
panel.delegate = nil;
}
I found the solution here: QuickLook consumer as a delegate from an NSViewController. In my case i need these 3 lines of code in the panel controller (NSWindowController) where i have the instance of my table view controller.
- (void)awakeFromNib {
NSResponder * aNextResponder = [self nextResponder];
[self setNextResponder:_tableController];
[_tableController setNextResponder:aNextResponder];
}
Wondering if anyone could give an example of how to dowload files for use with this PDF Reader code? I am very new and have been hacking away at it but I think it's time for some experienced eyes. thanks!
//
// ReaderViewController.m
// Reader v2.6.0
/////////////////////////////
#import "ReaderConstants.h"
#import "ReaderViewController.h"
#import "ThumbsViewController.h"
#import "ReaderMainToolbar.h"
#import "ReaderMainPagebar.h"
#import "ReaderContentView.h"
#import "ReaderThumbCache.h"
#import "ReaderThumbQueue.h"
#import <MessageUI/MessageUI.h>
#interface ReaderViewController () <UIScrollViewDelegate, UIGestureRecognizerDelegate, MFMailComposeViewControllerDelegate,
ReaderMainToolbarDelegate, ReaderMainPagebarDelegate, ReaderContentViewDelegate, ThumbsViewControllerDelegate>
#end
#implementation ReaderViewController
{
ReaderDocument *document;
UIScrollView *theScrollView;
ReaderMainToolbar *mainToolbar;
ReaderMainPagebar *mainPagebar;
NSMutableDictionary *contentViews;
UIPrintInteractionController *printInteraction;
NSInteger currentPage;
CGSize lastAppearSize;
NSDate *lastHideTime;
BOOL isVisible;
}
#pragma mark Constants
#define PAGING_VIEWS 3
#define TOOLBAR_HEIGHT 44.0f
#define PAGEBAR_HEIGHT 48.0f
#define TAP_AREA_SIZE 48.0f
#pragma mark Properties
#synthesize delegate;
#pragma mark Support methods
- (void)updateScrollViewContentSize
{
NSInteger count = [document.pageCount integerValue];
if (count > PAGING_VIEWS) count = PAGING_VIEWS; // Limit
CGFloat contentHeight = theScrollView.bounds.size.height;
CGFloat contentWidth = (theScrollView.bounds.size.width * count);
theScrollView.contentSize = CGSizeMake(contentWidth, contentHeight);
}
- (void)updateScrollViewContentViews
{
[self updateScrollViewContentSize]; // Update the content size
NSMutableIndexSet *pageSet = [NSMutableIndexSet indexSet]; // Page set
[contentViews enumerateKeysAndObjectsUsingBlock: // Enumerate content views
^(id key, id object, BOOL *stop)
{
ReaderContentView *contentView = object; [pageSet addIndex:contentView.tag];
}
];
__block CGRect viewRect = CGRectZero; viewRect.size = theScrollView.bounds.size;
__block CGPoint contentOffset = CGPointZero; NSInteger page = [document.pageNumber integerValue];
[pageSet enumerateIndexesUsingBlock: // Enumerate page number set
^(NSUInteger number, BOOL *stop)
{
NSNumber *key = [NSNumber numberWithInteger:number]; // # key
ReaderContentView *contentView = [contentViews objectForKey:key];
contentView.frame = viewRect; if (page == number) contentOffset = viewRect.origin;
viewRect.origin.x += viewRect.size.width; // Next view frame position
}
];
if (CGPointEqualToPoint(theScrollView.contentOffset, contentOffset) == false)
{
theScrollView.contentOffset = contentOffset; // Update content offset
}
}
- (void)updateToolbarBookmarkIcon
{
NSInteger page = [document.pageNumber integerValue];
BOOL bookmarked = [document.bookmarks containsIndex:page];
[mainToolbar setBookmarkState:bookmarked]; // Update
}
- (void)showDocumentPage:(NSInteger)page
{
if (page != currentPage) // Only if different
{
NSInteger minValue; NSInteger maxValue;
NSInteger maxPage = [document.pageCount integerValue];
NSInteger minPage = 1;
if ((page < minPage) || (page > maxPage)) return;
if (maxPage <= PAGING_VIEWS) // Few pages
{
minValue = minPage;
maxValue = maxPage;
}
else // Handle more pages
{
minValue = (page - 1);
maxValue = (page + 1);
if (minValue < minPage)
{minValue++; maxValue++;}
else
if (maxValue > maxPage)
{minValue--; maxValue--;}
}
NSMutableIndexSet *newPageSet = [NSMutableIndexSet new];
NSMutableDictionary *unusedViews = [contentViews mutableCopy];
CGRect viewRect = CGRectZero; viewRect.size = theScrollView.bounds.size;
for (NSInteger number = minValue; number <= maxValue; number++)
{
NSNumber *key = [NSNumber numberWithInteger:number]; // # key
ReaderContentView *contentView = [contentViews objectForKey:key];
if (contentView == nil) // Create a brand new document content view
{
NSURL *fileURL = document.fileURL; NSString *phrase = document.password; // Document properties
contentView = [[ReaderContentView alloc] initWithFrame:viewRect fileURL:fileURL page:number password:phrase];
[theScrollView addSubview:contentView]; [contentViews setObject:contentView forKey:key];
contentView.message = self; [newPageSet addIndex:number];
}
else // Reposition the existing content view
{
contentView.frame = viewRect; [contentView zoomReset];
[unusedViews removeObjectForKey:key];
}
viewRect.origin.x += viewRect.size.width;
}
[unusedViews enumerateKeysAndObjectsUsingBlock: // Remove unused views
^(id key, id object, BOOL *stop)
{
[contentViews removeObjectForKey:key];
ReaderContentView *contentView = object;
[contentView removeFromSuperview];
}
];
unusedViews = nil; // Release unused views
CGFloat viewWidthX1 = viewRect.size.width;
CGFloat viewWidthX2 = (viewWidthX1 * 2.0f);
CGPoint contentOffset = CGPointZero;
if (maxPage >= PAGING_VIEWS)
{
if (page == maxPage)
contentOffset.x = viewWidthX2;
else
if (page != minPage)
contentOffset.x = viewWidthX1;
}
else
if (page == (PAGING_VIEWS - 1))
contentOffset.x = viewWidthX1;
if (CGPointEqualToPoint(theScrollView.contentOffset, contentOffset) == false)
{
theScrollView.contentOffset = contentOffset; // Update content offset
}
if ([document.pageNumber integerValue] != page) // Only if different
{
document.pageNumber = [NSNumber numberWithInteger:page]; // Update page number
}
NSURL *fileURL = document.fileURL; NSString *phrase = document.password; NSString *guid = document.guid;
if ([newPageSet containsIndex:page] == YES) // Preview visible page first
{
NSNumber *key = [NSNumber numberWithInteger:page]; // # key
ReaderContentView *targetView = [contentViews objectForKey:key];
[targetView showPageThumb:fileURL page:page password:phrase guid:guid];
[newPageSet removeIndex:page]; // Remove visible page from set
}
[newPageSet enumerateIndexesWithOptions:NSEnumerationReverse usingBlock: // Show previews
^(NSUInteger number, BOOL *stop)
{
NSNumber *key = [NSNumber numberWithInteger:number]; // # key
ReaderContentView *targetView = [contentViews objectForKey:key];
[targetView showPageThumb:fileURL page:number password:phrase guid:guid];
}
];
newPageSet = nil; // Release new page set
[mainPagebar updatePagebar]; // Update the pagebar display
[self updateToolbarBookmarkIcon]; // Update bookmark
currentPage = page; // Track current page number
}
}
- (void)showDocument:(id)object
{
[self updateScrollViewContentSize]; // Set content size
[self showDocumentPage:[document.pageNumber integerValue]];
document.lastOpen = [NSDate date]; // Update last opened date
isVisible = YES; // iOS present modal bodge
}
#pragma mark UIViewController methods
- (id)initWithReaderDocument:(ReaderDocument *)object
{
id reader = nil; // ReaderViewController object
if ((object != nil) && ([object isKindOfClass:[ReaderDocument class]]))
{
if ((self = [super initWithNibName:nil bundle:nil])) // Designated initializer
{
NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
[notificationCenter addObserver:self selector:#selector(applicationWill:) name:UIApplicationWillTerminateNotification object:nil];
[notificationCenter addObserver:self selector:#selector(applicationWill:) name:UIApplicationWillResignActiveNotification object:nil];
[object updateProperties]; document = object; // Retain the supplied ReaderDocument object for our use
[ReaderThumbCache touchThumbCacheWithGUID:object.guid]; // Touch the document thumb cache directory
reader = self; // Return an initialized ReaderViewController object
}
}
return reader;
}
- (void)viewDidLoad
{
[super viewDidLoad];
assert(document != nil); // Must have a valid ReaderDocument
self.view.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];
CGRect viewRect = self.view.bounds; // View controller's view bounds
theScrollView = [[UIScrollView alloc] initWithFrame:viewRect]; // All
theScrollView.scrollsToTop = NO;
theScrollView.pagingEnabled = YES;
theScrollView.delaysContentTouches = NO;
theScrollView.showsVerticalScrollIndicator = NO;
theScrollView.showsHorizontalScrollIndicator = NO;
theScrollView.contentMode = UIViewContentModeRedraw;
theScrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
theScrollView.backgroundColor = [UIColor clearColor];
theScrollView.userInteractionEnabled = YES;
theScrollView.autoresizesSubviews = NO;
theScrollView.delegate = self;
[self.view addSubview:theScrollView];
CGRect toolbarRect = viewRect;
toolbarRect.size.height = TOOLBAR_HEIGHT;
mainToolbar = [[ReaderMainToolbar alloc] initWithFrame:toolbarRect document:document]; // At top
mainToolbar.delegate = self;
[self.view addSubview:mainToolbar];
CGRect pagebarRect = viewRect;
pagebarRect.size.height = PAGEBAR_HEIGHT;
pagebarRect.origin.y = (viewRect.size.height - PAGEBAR_HEIGHT);
mainPagebar = [[ReaderMainPagebar alloc] initWithFrame:pagebarRect document:document]; // At bottom
mainPagebar.delegate = self;
[self.view addSubview:mainPagebar];
UITapGestureRecognizer *singleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap:)];
singleTapOne.numberOfTouchesRequired = 1; singleTapOne.numberOfTapsRequired = 1; singleTapOne.delegate = self;
[self.view addGestureRecognizer:singleTapOne];
UITapGestureRecognizer *doubleTapOne = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleDoubleTap:)];
doubleTapOne.numberOfTouchesRequired = 1; doubleTapOne.numberOfTapsRequired = 2; doubleTapOne.delegate = self;
[self.view addGestureRecognizer:doubleTapOne];
UITapGestureRecognizer *doubleTapTwo = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleDoubleTap:)];
doubleTapTwo.numberOfTouchesRequired = 2; doubleTapTwo.numberOfTapsRequired = 2; doubleTapTwo.delegate = self;
[self.view addGestureRecognizer:doubleTapTwo];
[singleTapOne requireGestureRecognizerToFail:doubleTapOne]; // Single tap requires double tap to fail
contentViews = [NSMutableDictionary new]; lastHideTime = [NSDate date];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if (CGSizeEqualToSize(lastAppearSize, CGSizeZero) == false)
{
if (CGSizeEqualToSize(lastAppearSize, self.view.bounds.size) == false)
{
[self updateScrollViewContentViews]; // Update content views
}
lastAppearSize = CGSizeZero; // Reset view size tracking
}
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if (CGSizeEqualToSize(theScrollView.contentSize, CGSizeZero)) // First time
{
[self performSelector:#selector(showDocument:) withObject:nil afterDelay:0.02];
}
#if (READER_DISABLE_IDLE == TRUE) // Option
[UIApplication sharedApplication].idleTimerDisabled = YES;
#endif // end of READER_DISABLE_IDLE Option
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
lastAppearSize = self.view.bounds.size; // Track view size
#if (READER_DISABLE_IDLE == TRUE) // Option
[UIApplication sharedApplication].idleTimerDisabled = NO;
#endif // end of READER_DISABLE_IDLE Option
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (void)viewDidUnload
{
#ifdef DEBUG
NSLog(#"%s", __FUNCTION__);
#endif
mainToolbar = nil; mainPagebar = nil;
theScrollView = nil; contentViews = nil; lastHideTime = nil;
lastAppearSize = CGSizeZero; currentPage = 0;
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
if (isVisible == NO) return; // iOS present modal bodge
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)
{
if (printInteraction != nil) [printInteraction dismissAnimated:NO];
}
}
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration
{
if (isVisible == NO) return; // iOS present modal bodge
[self updateScrollViewContentViews]; // Update content views
lastAppearSize = CGSizeZero; // Reset view size tracking
}
/*
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
//if (isVisible == NO) return; // iOS present modal bodge
//if (fromInterfaceOrientation == self.interfaceOrientation) return;
}
*/
- (void)didReceiveMemoryWarning
{
#ifdef DEBUG
NSLog(#"%s", __FUNCTION__);
#endif
[super didReceiveMemoryWarning];
}
- (void)dealloc
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
#pragma mark UIScrollViewDelegate methods
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
__block NSInteger page = 0;
CGFloat contentOffsetX = scrollView.contentOffset.x;
[contentViews enumerateKeysAndObjectsUsingBlock: // Enumerate content views
^(id key, id object, BOOL *stop)
{
ReaderContentView *contentView = object;
if (contentView.frame.origin.x == contentOffsetX)
{
page = contentView.tag; *stop = YES;
}
}
];
if (page != 0) [self showDocumentPage:page]; // Show the page
}
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView
{
[self showDocumentPage:theScrollView.tag]; // Show page
theScrollView.tag = 0; // Clear page number tag
}
#pragma mark UIGestureRecognizerDelegate methods
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch
{
if ([touch.view isKindOfClass:[UIScrollView class]]) return YES;
return NO;
}
#pragma mark UIGestureRecognizer action methods
- (void)decrementPageNumber
{
if (theScrollView.tag == 0) // Scroll view did end
{
NSInteger page = [document.pageNumber integerValue];
NSInteger maxPage = [document.pageCount integerValue];
NSInteger minPage = 1; // Minimum
if ((maxPage > minPage) && (page != minPage))
{
CGPoint contentOffset = theScrollView.contentOffset;
contentOffset.x -= theScrollView.bounds.size.width; // -= 1
[theScrollView setContentOffset:contentOffset animated:YES];
theScrollView.tag = (page - 1); // Decrement page number
}
}
}
- (void)incrementPageNumber
{
if (theScrollView.tag == 0) // Scroll view did end
{
NSInteger page = [document.pageNumber integerValue];
NSInteger maxPage = [document.pageCount integerValue];
NSInteger minPage = 1; // Minimum
if ((maxPage > minPage) && (page != maxPage))
{
CGPoint contentOffset = theScrollView.contentOffset;
contentOffset.x += theScrollView.bounds.size.width; // += 1
[theScrollView setContentOffset:contentOffset animated:YES];
theScrollView.tag = (page + 1); // Increment page number
}
}
}
- (void)handleSingleTap:(UITapGestureRecognizer *)recognizer
{
if (recognizer.state == UIGestureRecognizerStateRecognized)
{
CGRect viewRect = recognizer.view.bounds; // View bounds
CGPoint point = [recognizer locationInView:recognizer.view];
CGRect areaRect = CGRectInset(viewRect, TAP_AREA_SIZE, 0.0f); // Area
if (CGRectContainsPoint(areaRect, point)) // Single tap is inside the area
{
NSInteger page = [document.pageNumber integerValue]; // Current page #
NSNumber *key = [NSNumber numberWithInteger:page]; // Page number key
ReaderContentView *targetView = [contentViews objectForKey:key];
id target = [targetView processSingleTap:recognizer]; // Target
if (target != nil) // Handle the returned target object
{
if ([target isKindOfClass:[NSURL class]]) // Open a URL
{
NSURL *url = (NSURL *)target; // Cast to a NSURL object
if (url.scheme == nil) // Handle a missing URL scheme
{
NSString *www = url.absoluteString; // Get URL string
if ([www hasPrefix:#"www"] == YES) // Check for 'www' prefix
{
NSString *http = [NSString stringWithFormat:#"http://%#", www];
url = [NSURL URLWithString:http]; // Proper http-based URL
}
}
if ([[UIApplication sharedApplication] openURL:url] == NO)
{
#ifdef DEBUG
NSLog(#"%s '%#'", __FUNCTION__, url); // Bad or unknown URL
#endif
}
}
else // Not a URL, so check for other possible object type
{
if ([target isKindOfClass:[NSNumber class]]) // Goto page
{
NSInteger value = [target integerValue]; // Number
[self showDocumentPage:value]; // Show the page
}
}
}
else // Nothing active tapped in the target content view
{
if ([lastHideTime timeIntervalSinceNow] < -0.75) // Delay since hide
{
if ((mainToolbar.hidden == YES) || (mainPagebar.hidden == YES))
{
[mainToolbar showToolbar]; [mainPagebar showPagebar]; // Show
}
}
}
return;
}
CGRect nextPageRect = viewRect;
nextPageRect.size.width = TAP_AREA_SIZE;
nextPageRect.origin.x = (viewRect.size.width - TAP_AREA_SIZE);
if (CGRectContainsPoint(nextPageRect, point)) // page++ area
{
[self incrementPageNumber]; return;
}
CGRect prevPageRect = viewRect;
prevPageRect.size.width = TAP_AREA_SIZE;
if (CGRectContainsPoint(prevPageRect, point)) // page-- area
{
[self decrementPageNumber]; return;
}
}
}
- (void)handleDoubleTap:(UITapGestureRecognizer *)recognizer
{
if (recognizer.state == UIGestureRecognizerStateRecognized)
{
CGRect viewRect = recognizer.view.bounds; // View bounds
CGPoint point = [recognizer locationInView:recognizer.view];
CGRect zoomArea = CGRectInset(viewRect, TAP_AREA_SIZE, TAP_AREA_SIZE);
if (CGRectContainsPoint(zoomArea, point)) // Double tap is in the zoom area
{
NSInteger page = [document.pageNumber integerValue]; // Current page #
NSNumber *key = [NSNumber numberWithInteger:page]; // Page number key
ReaderContentView *targetView = [contentViews objectForKey:key];
switch (recognizer.numberOfTouchesRequired) // Touches count
{
case 1: // One finger double tap: zoom ++
{
[targetView zoomIncrement]; break;
}
case 2: // Two finger double tap: zoom --
{
[targetView zoomDecrement]; break;
}
}
return;
}
CGRect nextPageRect = viewRect;
nextPageRect.size.width = TAP_AREA_SIZE;
nextPageRect.origin.x = (viewRect.size.width - TAP_AREA_SIZE);
if (CGRectContainsPoint(nextPageRect, point)) // page++ area
{
[self incrementPageNumber]; return;
}
CGRect prevPageRect = viewRect;
prevPageRect.size.width = TAP_AREA_SIZE;
if (CGRectContainsPoint(prevPageRect, point)) // page-- area
{
[self decrementPageNumber]; return;
}
}
}
#pragma mark ReaderContentViewDelegate methods
- (void)contentView:(ReaderContentView *)contentView touchesBegan:(NSSet *)touches
{
if ((mainToolbar.hidden == NO) || (mainPagebar.hidden == NO))
{
if (touches.count == 1) // Single touches only
{
UITouch *touch = [touches anyObject]; // Touch info
CGPoint point = [touch locationInView:self.view]; // Touch location
CGRect areaRect = CGRectInset(self.view.bounds, TAP_AREA_SIZE, TAP_AREA_SIZE);
if (CGRectContainsPoint(areaRect, point) == false) return;
}
[mainToolbar hideToolbar]; [mainPagebar hidePagebar]; // Hide
lastHideTime = [NSDate date];
}
}
#pragma mark ReaderMainToolbarDelegate methods
- (void)tappedInToolbar:(ReaderMainToolbar *)toolbar doneButton:(UIButton *)button
{
#if (READER_STANDALONE == FALSE) // Option
[document saveReaderDocument]; // Save any ReaderDocument object changes
[[ReaderThumbQueue sharedInstance] cancelOperationsWithGUID:document.guid];
[[ReaderThumbCache sharedInstance] removeAllObjects]; // Empty the thumb cache
if (printInteraction != nil) [printInteraction dismissAnimated:NO]; // Dismiss
if ([delegate respondsToSelector:#selector(dismissReaderViewController:)] == YES)
{
[delegate dismissReaderViewController:self]; // Dismiss the ReaderViewController
}
else // We have a "Delegate must respond to -dismissReaderViewController: error"
{
NSAssert(NO, #"Delegate must respond to -dismissReaderViewController:");
}
#endif // end of READER_STANDALONE Option
}
I am calling a Singleton method that does not get called when I try doing this.
I get no errors or anything, just that I am unable to see the CCLOG message.
Under what reasons would a compiler not give you error and not allow you to call a method?
[[GameManager sharedGameManager] openSiteWithLinkType:kLinkTypeDeveloperSite];
The method is defined as follows:
-(void)openSiteWithLinkType:(LinkTypes)linkTypeToOpen
{
CCLOG(#"WE ARE IN openSiteWithLinkType"); //I NEVER SEE THIS MESSAGE
NSURL *urlToOpen = nil;
if (linkTypeToOpen == kLinkTypeDeveloperSite)
{
urlToOpen = [NSURL URLWithString:#"http://somesite.com"];
}
if (![[UIApplication sharedApplication]openURL:urlToOpen])
{
CCLOG(#"%#%#",#"Failed to open url:",[urlToOpen description]);
[self runSceneWithID:kMainMenuScene];
}
}
HERE IS THE CODE TO MY SINGLETON:
#import "GameManager.h"
#import "MainMenuScene.h"
#implementation GameManager
static GameManager* _sharedGameManager = nil;
#synthesize isMusicON;
#synthesize isSoundEffectsON;
#synthesize hasPlayerDied;
+(GameManager*) sharedGameManager
{
#synchronized([GameManager class])
{
if (!_sharedGameManager)
{
[[self alloc] init];
return _sharedGameManager;
}
return nil;
}
}
+(id)alloc
{
#synchronized ([GameManager class])
{
NSAssert(_sharedGameManager == nil,#"Attempted to allocate a second instance of the Game Manager singleton");
_sharedGameManager = [super alloc];
return _sharedGameManager;
}
return nil;
}
-(id)init
{
self = [super init];
if (self != nil)
{
//Game Manager initialized
CCLOG(#"Game Manager Singleton, init");
isMusicON = YES;
isSoundEffectsON = YES;
hasPlayerDied = NO;
currentScene = kNoSceneUninitialized;
}
return self;
}
-(void) runSceneWithID:(SceneTypes)sceneID
{
SceneTypes oldScene = currentScene;
currentScene = sceneID;
id sceneToRun = nil;
switch (sceneID)
{
case kMainMenuScene:
sceneToRun = [MainMenuScene node];
break;
default:
CCLOG(#"Unknown Scene ID, cannot switch scenes");
return;
break;
}
if (sceneToRun == nil)
{
//Revert back, since no new scene was found
currentScene = oldScene;
return;
}
//Menu Scenes have a value of < 100
if (sceneID < 100)
{
if (UI_USER_INTERFACE_IDIOM() != UIUserInterfaceIdiomPad)
{
CGSize screenSize = [CCDirector sharedDirector].winSizeInPixels;
if (screenSize.width == 960.0f)
{
//iPhone 4 retina
[sceneToRun setScaleX:0.9375f];
[sceneToRun setScaleY:0.8333f];
CCLOG(#"GM: Scaling for iPhone 4 (retina)");
}
else
{
[sceneToRun setScaleX:0.4688f];
[sceneToRun setScaleY:0.4166f];
CCLOG(#"GM: Scaling for iPhone 3G or older (non-retina)");
}
}
}
if ([[CCDirector sharedDirector] runningScene] == nil)
{
[[CCDirector sharedDirector] runWithScene:sceneToRun];
}
else
{
[[CCDirector sharedDirector] replaceScene:sceneToRun];
}
}
-(void)openSiteWithLinkType:(LinkTypes)linkTypeToOpen
{
CCLOG(#"WE ARE IN openSiteWithLinkType");
NSURL *urlToOpen = nil;
if (linkTypeToOpen == kLinkTypeDeveloperSite)
{
urlToOpen = [NSURL URLWithString:#"http://somesite.com"];
}
if (![[UIApplication sharedApplication]openURL:urlToOpen])
{
CCLOG(#"%#%#",#"Failed to open url:",[urlToOpen description]);
[self runSceneWithID:kMainMenuScene];
}
}
-(void) test
{
CCLOG(#"this is test");
}
#end
Perhaps sharedGameManager is returning nil? This won't cause an error.
Edit: The issue is in the new code you posted:
if (!_sharedGameManager) {
[[self alloc] init];
return _sharedGameManager;
}
return nil;
If _sharedGameManager is non-nil, this will return nil. You want:
if (!_sharedGameManager) {
[[self alloc] init];
}
return _sharedGameManager;
Check this Cocoa With Love article on how to make a proper singleton.