This was working fine yesterday and without touching anything it stopped working today. When I run the query to allocate my 'filterEvents' array, 'objects' in the block is empty. Anyone know what's going on?
#import "FilterViewController.h"
#interface FilterViewController ()
#end
#implementation FilterViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.filterTable.dataSource = self;
self.filterTable.delegate = self;
[self performSelector:#selector(retrieveFilteredEvents)];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [self.filterEvents count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"filterTableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
NSDictionary *tempDict = [self.filterEvents objectAtIndex:indexPath.row];
self.eventTitle = [tempDict objectForKey:#"eventType"];
cell.textLabel.text = self.eventTitle;
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *tempDict = [self.filterEvents objectAtIndex:indexPath.row];
NSString *string = [tempDict objectForKey:#"eventType"];
[self.delegate setFilter:string];
[self dismissViewControllerAnimated:YES completion:nil];
[[NSNotificationCenter defaultCenter] postNotificationName:#"updateParent" object:nil];
}
#pragma mark - Helper Methods
- (IBAction)done:(id)sender
{
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)retrieveFilteredEvents
{
PFQuery *retrieveEvents = [PFQuery queryWithClassName:#"eventTypes"];
[retrieveEvents orderByAscending:#"eventOrder"];
[retrieveEvents findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
self.filterEvents = [[NSArray alloc] initWithArray:objects];
NSLog(#"%#", self.filterEvents);
}
[self.filterTable reloadData];
}];
}
#end
Related
I have been stuck on this all day and I'm looking for some help. I am making an app where someone can type in a web address that web address will be stored in a table view. When the user taps on that cell it will take them to the web view where they can view that site. I am using parse as my backend to store the user input. ( I am not using PFQueryTableView)
Here is my code for the tableViewController:
interface MenuTableViewController : UITableViewController
#property(strong, nonatomic) NSMutableArray *referralArray;
#property (strong, nonatomic) PFObject *selectLink;
#property (nonatomic, strong) NSArray *webInput;
#property (nonatomic, strong) UIRefreshControl *refreshControl;
#end
#interface MenuTableViewController ()
#end
#implementation MenuTableViewController
#synthesize referralArray;
- (void)viewDidLoad
{
[super viewDidLoad];
PFUser *currentUser = [PFUser currentUser];
if (currentUser) {
NSLog(#"Current user: %#", currentUser.username);
}
else {
[self performSegueWithIdentifier:#"showLogin" sender:self];
}
//refresh inbox
self.refreshControl = [[UIRefreshControl alloc] init];
[self.refreshControl addTarget:self action:#selector(retrieveMessages) forControlEvents:UIControlEventValueChanged];
//swipe to delete
self.tableView.allowsMultipleSelectionDuringEditing = NO;
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController.navigationBar setHidden:NO];
}
#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 [self.webInput count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"refCell"forIndexPath:indexPath];
PFObject *web = [self.webInput objectAtIndex:indexPath.row];
cell.textLabel.text = [web objectForKey:#"RefLink"];
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
self.selectLink = [self.webInput objectAtIndex:indexPath.row];
//NSString *fileType = [self.selectLink objectForKey:#"RefLink"];
//[self performSegueWithIdentifier:#"webSegue" sender:self];
NSDictionary *dict = [self.webInput objectAtIndex:indexPath.section];
NSString *link=[dict valueForKey:#"link"];
//Create a URL object.
NSURL *url = [NSURL URLWithString:link];
UINavigationController *nav = [self.storyboard instantiateViewControllerWithIdentifier:#"WebView"];
WebViewController *web = (WebViewController *)nav.topViewController;
web.webLink =url;
}
//swipe to delete
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return YES if you want the specified item to be editable.
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if (editingStyle == UITableViewCellEditingStyleDelete) {
//try this
PFObject *object = [self.webInput objectAtIndex:indexPath.row];
[object deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
[self refreshControl];
[self.tableView reloadData];
}];
}
}
#pragma mark - Helper methods
- (void)retrieveMessages {
PFQuery *query = [PFQuery queryWithClassName:#"Referrals"];
//[query whereKey:#"recipientIds" equalTo:[[PFUser currentUser] objectId]];
//run the query here for messages
[query orderByDescending:#"createdAt"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (error) {
NSLog(#"Error: %# %#", error, [error userInfo]);
}
else {
// We found messages!
self.webInput = objects;
[self.tableView reloadData];
NSLog(#"Retrieved %lu messages", (unsigned long)[self.webInput count]);
}
if ([self.refreshControl isRefreshing]) {
[self.refreshControl endRefreshing];
}
}];
}
#pragma mark - LogOut
- (IBAction)logout:(id)sender {
[PFUser logOut];
[self performSegueWithIdentifier:#"showLogin" sender:self];
}
#pragma mark - Segue
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showLogin"]) {
[segue.destinationViewController setHidesBottomBarWhenPushed:YES];
}
else if ([segue.identifier isEqualToString:#"webSegue"]) {
[segue.destinationViewController setHidesBottomBarWhenPushed:YES];
WebViewController *webView = (WebViewController *)segue.destinationViewController;
webView.webAddress = self.selectLink;
}
}
#end
If Someone could help me out I would greatly appreciate it!
I have a problem with my TableViewController. There is a custom cell, with a class, and various infos dynamically loaded. My TableViewController appears, but my cell doesn't display, but i can touch this, and my transition with infos are good.
Thanks for your answers.
TableViewController.m
#interface Chat() {
NSMutableArray *messages;
UIRefreshControl *refreshControl;
}
#property (strong, nonatomic) IBOutlet UITableView *tableMessages;
#end
#implementation Chat
NSString *cellIdentifier = #"ChatCell";
- (void)viewDidLoad {
[super viewDidLoad];
[_tableMessages registerClass:[ChatCell class] forCellReuseIdentifier:cellIdentifier];
refreshControl = [[UIRefreshControl alloc] init];
[refreshControl addTarget:self action:#selector(loadMessages) forControlEvents:UIControlEventValueChanged];
[_tableMessages addSubview:refreshControl];
messages = [[NSMutableArray alloc] init];
[self loadMessages];
}
- (void)loadMessages {
if ([PFUser currentUser] != nil)
{
PFQuery *query = [PFQuery queryWithClassName:PF_MESSAGES_CLASS_NAME];
[query whereKey:PF_MESSAGES_USER equalTo:[PFUser currentUser]];
[query includeKey:PF_MESSAGES_LASTUSER];
[query orderByDescending:PF_MESSAGES_UPDATEDACTION];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (error == nil) {
[messages removeAllObjects];
[messages addObjectsFromArray:objects];
[_tableMessages reloadData];
} else [ProgressHUD showError:#"Network error."];
[refreshControl endRefreshing];
}];
}
}
- (void)actionCleanup {
[messages removeAllObjects];
[_tableMessages reloadData];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [messages count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ChatCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
[cell bindData:messages[indexPath.row]];
return cell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
DeleteMessageItem(messages[indexPath.row]);
[messages removeObjectAtIndex:indexPath.row];
[_tableMessages deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
PFObject *message = messages[indexPath.row];
ChatView *chatView = [[ChatView alloc] initWith:message[PF_MESSAGES_ROOMID]];
[self.navigationController pushViewController:chatView animated:YES];
}
#end
TableViewCell.m
#interface ChatCell() {
PFObject *message;
}
#end
#implementation ChatCell
- (void)bindData:(PFObject *)message_ {
message = message_;
_chatImg.layer.cornerRadius = _chatImg.frame.size.width/2;
_chatImg.layer.masksToBounds = YES;
PFUser *lastUser = message[PF_MESSAGES_LASTUSER];
[_chatImg setFile:lastUser[PF_USER_PICTURE]];
[_chatImg loadInBackground];
_chatUsername.text = message[PF_MESSAGES_DESCRIPTION];
_chatMessage.text = message[PF_MESSAGES_LASTMESSAGE];
NSTimeInterval seconds = [[NSDate date] timeIntervalSinceDate:message.updatedAt];
_chatDate.text = TimeElapsed(seconds);
}
#end
It's because you register the cell using - registerClass:forCellReuseIdentifier:.
If you register it this way you have to construct the view programmatically or load the nib file in ChatCell code.
To solve the problem, do either of these:
Create a nib file containing the view for your table view cell and set the class to ChatCell. Then use - registerNib:forCellReuseIdentifier: to register the nib.
Construct the view programmatically eg. create a UILabel and add it as a subview of ChatCell.
Make the prototype cell in the storyboard and set the cell identifier to ChatCell. Then remove the - registerClass:forCellReuseIdentifier:
Check You are given correct cell Identifier in storyboard. (case sensitive) " ChatCell"
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = #"ChatCell";
ChatCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
[cell bindData:messages[indexPath.row]];
return cell;
}
You are updating the UI on background thread. Try this, in your "loadMessages" method.
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
dispatch_async(dispatch_get_main_queue(), ^{
//update UI here
if (error == nil) {
[messages removeAllObjects];
[messages addObjectsFromArray:objects];
[_tableMessages reloadData];
} else [ProgressHUD showError:#"Network error."];
[refreshControl endRefreshing];
});
}];
When I run the application, the header view container space is there, and is visible. I'm trying to display the username inside the header view, but nothing is showing up. Here is my code so far in the tableView:
#import "HomeView.h"
#interface HomeView () <UIActionSheetDelegate, UIImagePickerControllerDelegate>
#end
#implementation HomeView
- (void)viewDidLoad {
[super viewDidLoad];
if ([PFUser currentUser]) {
NSLog(#"Welcome to the App, %#", [self.user objectForKey:#"username"]);
} else {
LoginView *loginView = [[LoginView alloc] init];
[loginView setHidesBottomBarWhenPushed:YES];
[loginView.navigationItem setHidesBackButton:YES];
[self.navigationController pushViewController:loginView animated:NO];
}
UIBarButtonItem *takePhoto = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:#selector(takePhoto:)];
self.navigationItem.rightBarButtonItem = takePhoto;
// [self.tableView registerClass:[HomeViewCell class] forCellReuseIdentifier:#"cellIdentifier"];
// [self.tableView registerNib:[UINib nibWithNibName:#"HomeViewCell" bundle:nil]
// forCellReuseIdentifier:#"cellIdentifier"];
self.tableView.delegate = self;
self.tableView.dataSource = self;
}
- (id)initWithStyle:(UITableViewStyle)style {
self = [super initWithStyle:style];
if (self) {
self.reusableSectionHeaderViews = [NSMutableSet setWithCapacity:3];
}
return self;
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
PFQuery *query = [PFQuery queryWithClassName:#"UserPhotos"];
[query orderByDescending:#"createdAt"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (error) {
NSLog(#"Error: %# %#", error, [error userInfo]);
} else {
self.userPhotos = objects;
NSLog(#"Retrieved objects: %#", self.userPhotos);
[self.tableView reloadData];
}
}];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
NSInteger sections = self.userPhotos.count;
// Return the number of sections.
return sections;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return 1;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
if (section == self.userPhotos.count) {
// Load More section
return nil;
}
HomeHeaderView *headerView = [self dequeueReusableSectionHeaderView];
if (!headerView) {
headerView = [[HomeHeaderView alloc] initWithFrame:CGRectMake( 0.0f, 0.0f, self.view.bounds.size.width, 44.0f) buttons:HomePhotoHeaderButtonsDefault];
headerView.delegate = self;
[self.reusableSectionHeaderViews addObject:headerView];
}
//Setting the username display.
PFObject *owner = [self.userPhotos objectAtIndex:section];
PFUser *user = [owner objectForKey:#"user"];
[user fetchIfNeededInBackgroundWithBlock:^(PFObject *object, NSError *error) {
if (!error) {
NSString *username = user.username;
[headerView.userButton setTitle:username forState:UIControlStateNormal];
}
}];
return headerView;
}
- (HomeHeaderView *)dequeueReusableSectionHeaderView {
for (HomeHeaderView *sectionHeaderView in self.reusableSectionHeaderViews) {
if (!sectionHeaderView.superview) {
// we found a section header that is no longer visible
return sectionHeaderView;
}
}
return nil;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"cellIdentifier";
HomeViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
cell = [[HomeViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
//Setting the image in the cell.
PFObject *carPhoto = [self.userPhotos objectAtIndex:indexPath.row];
PFFile *imageFile = [carPhoto objectForKey:#"imageFile"];
NSURL *imageFileUrl = [[NSURL alloc] initWithString:imageFile.url];
NSData *imageData = [NSData dataWithContentsOfURL:imageFileUrl];
cell.carImage.contentMode = UIViewContentModeScaleAspectFit;
cell.carImage.image = [UIImage imageWithData:imageData];
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 269;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
if (section == self.userPhotos.count) {
return 0.0f;
}
return 44.0f;
}
[user fetchIfNeededInBackgroundWithBlock:^(PFObject *object, NSError *error) {
if (!error) {
NSString *username = user.username;
[headerView.userButton setTitle:username forState:UIControlStateNormal];
}
}];
The code above, you are updating the headerview UI from a background thread. You need to wrap the UI part so it performs on the main thread.
dispatch_async(dispatch_get_main_queue(), ^{
[headerView.userButton setTitle:username forState:UIControlStateNormal];
};
You need to be careful though, you are performing a background operation and then updating the header which you are reusing. There is a chance that the header is reused for a new section before the operation finishes and it is then set with the wrong username for that section. You can take care of this by not reusing the header or canceling the network operation if the header scrolls off screen before the operation finishes.
I am trying to display data in different sections using PFQueryTableViewController. The code suggested in https://parse.com/questions/using-pfquerytableviewcontroller-for-uitableview-sections seemed to work, but I couldn't get the data to load on self.objects. Here is my code:
#import "AKAdminViewStudentsViewController.h"
#interface AKAdminViewStudentsViewController ()
#property (strong, nonatomic) NSMutableDictionary *sections;
#property (strong, nonatomic) NSMutableDictionary *sectionToClassMap;
#end
#implementation AKAdminViewStudentsViewController
#synthesize sections = _sections;
#synthesize sectionToClassMap = _sectionToClassMap;
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
self.parseClassName = #"Students";
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self.tableView reloadData];
NSLog(#"sections found: %#", self.sections); // returns null
NSLog(#"sectionToClassMap: %#", self.sectionToClassMap); // returns null
NSLog(#"objects in table: %#", self.objects); // this found to be empty
}
...
#pragma mark - Tableview methods
- (PFQuery *)queryForTable
{
PFQuery *queryStudents = [PFQuery queryWithClassName:#"Students"];
[queryStudents whereKey:#"student_admin" equalTo:[PFUser currentUser]];
if ([self.objects count]==0) {
queryStudents.cachePolicy = kPFCachePolicyCacheThenNetwork;
}
[queryStudents orderByAscending:#"class_name"];
return queryStudents;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return self.sections.allKeys.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSString *className = [self classForSection:section];
NSArray *rowIndicesInSection = [self.sections objectForKey:className];
return rowIndicesInSection.count;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSString *className = [self classForSection:section];
return className;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *CellIdentifier = #"Students";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell==nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
}
// Configure cell
cell.textLabel.text = [NSString stringWithFormat:#"%#", object[#"full_name"]];
NSDateFormatter *formatDate = [[NSDateFormatter alloc] init];
[formatDate setDateStyle:NSDateFormatterShortStyle];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#", [formatDate stringFromDate:object[#"createdAt"]]];
return cell;
}
#pragma mark - Helper methods
- (void)objectsDidLoad:(NSError *)error
{
[super objectsDidLoad:error];
// Clear data before loading
[self.sections removeAllObjects];
[self.sectionToClassMap removeAllObjects];
NSInteger section = 0;
NSInteger rowIndex = 0;
for (PFObject *object in self.objects) {
NSString *className = [object objectForKey:#"class_name"];
NSMutableArray *objectsInSection = [self.sections objectForKey:className];
if (!objectsInSection) {
objectsInSection = [NSMutableArray array];
// Create new section for new class found
[self.sectionToClassMap setObject:className forKey:[NSNumber numberWithInt:section++]];
}
[objectsInSection addObject:[NSNumber numberWithInt:rowIndex++]];
[self.sections setObject:objectsInSection forKey:className];
}
}
- (PFObject *)objectAtIndexPath:(NSIndexPath *)indexPath
{
NSString *className = [self classForSection:indexPath.section];
NSArray *rowIndicesInSection = [self.sections objectForKey:className];
NSNumber *rowIndex = [rowIndicesInSection objectAtIndex:indexPath.row];
return [self.objects objectAtIndex:[rowIndex intValue]];
}
- (NSString *)classForSection:(NSInteger)section
{
return [self.sectionToClassMap objectForKey:[NSNumber numberWithInt:section]];
}
#end
When I look at the NSLog data, self.objects is empty. I know this is the reason why data isn't displayed, and would like some advice to sort this out please! Thanks.
Had a little bit of trouble replacing my TableViewController with PFQueryTableViewController, but I got it working with pull to refresh and pagination. However, I can't get the cache to work (at the very bottom of the .m file). Any ideas on what's going on?
The only other change I made here was subclass the image in the cell as PFImage.
ContactsTableViewController.h
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#import "FilterViewController.h"
#interface ContactsTableViewController : PFQueryTableViewController <UITableViewDelegate>
#property (nonatomic) NSString *titleName;
#property (nonatomic) NSString *date;
#property (nonatomic) NSString *price;
#property (nonatomic) NSString *imageName;
#property (nonatomic) NSString *venue;
#property (nonatomic) UIImage *image;
#property (nonatomic) NSString *filter;
#property (nonatomic) NSArray *eventsArray;
-(void)retrieveEvents;
-(void)filterEvents;
#end
ContactsTableViewController.m
#import "ContactsTableViewController.h"
#import "CustomCellTableViewCell.h"
#import "DetailViewController.h"
#interface ContactsTableViewController ()
#end
#implementation ContactsTableViewController
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// The className to query on
self.parseClassName = #"eventsList";
// The key of the PFObject to display in the label of the default cell style
// self.textKey = #"name";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = NO;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self performSelector:#selector(retrieveEvents)];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(filterEvents) name:#"updateParent" object:nil];
self.view.backgroundColor = [UIColor colorWithRed:245/255.0 green:243/255.0 blue:240/255.0 alpha:1];
}
#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 [self.eventsArray count];
}
// Parse Method
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *CellIdentifier = #"cellID";
CustomCellTableViewCell *customCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
NSDictionary *tempDict = [self.eventsArray objectAtIndex:indexPath.row];
self.titleName = [tempDict objectForKey:#"eventTitle"];
self.price = [tempDict objectForKey:#"eventPrice"];
self.date = [tempDict objectForKey:#"eventDate"];
self.venue = [tempDict objectForKey:#"eventVenue"];
PFFile *imageFile = [tempDict objectForKey:#"eventImage"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
customCell.customImageView.image = [UIImage imageWithData:data];
}
}];
customCell.titleLabel.text = self.titleName;
customCell.priceLabel.text = self.price;
customCell.customDateLabel.text = self.date;
customCell.venueNameLabel.text = self.venue;
return customCell;
}
- (void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
[cell setBackgroundColor:[UIColor darkGrayColor]];
tableView.separatorColor = [UIColor clearColor];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"showEventDetail"]) {
DetailViewController *destinationVC = [[DetailViewController alloc] init];
destinationVC = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSDictionary *tempDict = [self.eventsArray objectAtIndex:indexPath.row];
destinationVC.eventTitle = [tempDict objectForKey:#"eventTitle"];
destinationVC.eventPrice = [tempDict objectForKey:#"eventPrice"];
destinationVC.eventDate = [tempDict objectForKey:#"eventDate"];
destinationVC.venueName = [tempDict objectForKey:#"eventVenue"];
destinationVC.navigationItem.title = [tempDict objectForKey:#"eventTitle"];
// Image
PFFile *imageFile = [tempDict objectForKey:#"eventImage"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
destinationVC.eventImageView.image = [UIImage imageWithData:data];
destinationVC.eventImage = [UIImage imageWithData:data];
}
}];
// GeoPoint
destinationVC.geoPoint = [tempDict objectForKey:#"GeoPoint"];
} else if ([segue.identifier isEqualToString:#"showFilterTable"]){
FilterViewController *vc = (FilterViewController *)[[[segue destinationViewController] viewControllers] objectAtIndex:0];
[vc setDelegate:self];
}
}
-(void)retrieveEvents
{
PFQuery *retrieveEvents = [PFQuery queryWithClassName:#"eventsList"];
[retrieveEvents setLimit:300];
[retrieveEvents orderByAscending:#"eventTitle"];
[retrieveEvents findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
self.eventsArray = [[NSArray alloc] initWithArray:objects];
}
[self.tableView reloadData];
}];
}
-(void)filterEvents
{
if ([self.filter isEqualToString:#"All Events"]) {
[self performSelector:#selector(retrieveEvents)];
return;
}
NSLog(#"retrieveEvents: %#", self.filter);
PFQuery *retrieveEvents = [PFQuery queryWithClassName:#"eventsList"];
[retrieveEvents whereKey:#"eventType" equalTo:self.filter];
[retrieveEvents setLimit:300];
[retrieveEvents orderByAscending:#"eventTitle"];
[retrieveEvents findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
self.eventsArray = [[NSArray alloc] initWithArray:objects];
NSLog(#"%#", self.eventsArray);
}
[self.tableView reloadData];
}];
}
// Parse Method
- (PFQuery *)queryForTable
{
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
return query;
}
#end
From the looks of it you are not using the queryForTable to populate the tableview, you are using your separate query.
This query never gets used in your tableview
- (PFQuery *)queryForTable
{
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
return query;
}
Instead this one does:
-(void)retrieveEvents
{
PFQuery *retrieveEvents = [PFQuery queryWithClassName:#"eventsList"];
[retrieveEvents setLimit:300];
[retrieveEvents orderByAscending:#"eventTitle"];
[retrieveEvents findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
self.eventsArray = [[NSArray alloc] initWithArray:objects];
}
[self.tableView reloadData];
}];
}
kPFCachePolicyCacheThenNetwork means to use both cache and network (first get from cache for quickness, then get from network for up-to-date-ness the next time). Try instead using kPFCachePolicyCacheElseNetwork.
Try this code. It may not be perfect. But I believe it should at least head you in the right direction.
#import "ContactsTableViewController.h"
#import "CustomCellTableViewCell.h"
#import "DetailViewController.h"
#interface ContactsTableViewController ()
#end
#implementation ContactsTableViewController
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// The className to query on
self.parseClassName = #"eventsList";
// The key of the PFObject to display in the label of the default cell style
// self.textKey = #"name";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = NO;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(filterEvents) name:#"updateParent" object:nil];
self.view.backgroundColor = [UIColor colorWithRed:245/255.0 green:243/255.0 blue:240/255.0 alpha:1];
tableView.separatorColor = [UIColor clearColor];
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
//This reloaded the PFQueryTableView
[self loadObjects];
}
#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 self.objects.count;
}
// Parse Method
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *CellIdentifier = #"cellID";
CustomCellTableViewCell *customCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
PFObject *object = [self objectAtIndexPath:indexPath];
customCell.titleLabel.text = object[#"eventTitle"];
customCell.priceLabel.text = object[#"eventPrice"];
customCell.customDateLabel.text = object[#"eventDate"];
customCell.venueNameLabel.text = object[#"eventVenue"];
PFFile *imageFile = [tempDict objectForKey:#"eventImage"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
customCell.customImageView.image = [UIImage imageWithData:data];
}
}];
return customCell;
}
- (void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
[cell setBackgroundColor:[UIColor darkGrayColor]];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"showEventDetail"]) {
DetailViewController *destinationVC = [[DetailViewController alloc] init];
destinationVC = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSDictionary *tempDict = [self.eventsArray objectAtIndex:indexPath.row];
destinationVC.eventTitle = [tempDict objectForKey:#"eventTitle"];
destinationVC.eventPrice = [tempDict objectForKey:#"eventPrice"];
destinationVC.eventDate = [tempDict objectForKey:#"eventDate"];
destinationVC.venueName = [tempDict objectForKey:#"eventVenue"];
destinationVC.navigationItem.title = [tempDict objectForKey:#"eventTitle"];
// Image
PFFile *imageFile = [tempDict objectForKey:#"eventImage"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
destinationVC.eventImageView.image = [UIImage imageWithData:data];
destinationVC.eventImage = [UIImage imageWithData:data];
}
}];
// GeoPoint
destinationVC.geoPoint = [tempDict objectForKey:#"GeoPoint"];
} else if ([segue.identifier isEqualToString:#"showFilterTable"]){
FilterViewController *vc = (FilterViewController *)[[[segue destinationViewController] viewControllers] objectAtIndex:0];
[vc setDelegate:self];
}
}
// Parse Method
-(NSString *)filter
{
return _filter;
}
-(void)setFilter
{
_filter = filter;
[self loadObjects];
}
- (PFQuery *)queryForTable
{
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
if (self.filter && ![self.filter isEqualToString:#"All Events"]) [query whereKey:#"eventTitle" equalTo:self.filter];
[query setLimit:300];
[query orderByAscending:#"eventTitle"];
return query;
}
#end