Using TapGestureRecognizer with profileimage in TableViewController - ios

Good afternoon,
I'm trying to implement a "see user profile" button which is going to show a new ViewController with the user information. I have implemented a TapGestureRecognizer over the image profile when the image is pressed (it's a TableViewController).
The main problem is when I press the user image it shows a wrong ProfileViewController because it seems that my TableViewController is not updating the #username when I press a different row (it's showing the latest profile I have seen).
I have tried following a lot of tutorials but it's not working in any case, because whenever I press the profile image it shows (and I have tested it) the wrong username.
What I have to do to update the username to the one I have pressed?
Find an image of my XCode: http://i.stack.imgur.com/FvNHg.jpg
Here is my TableViewController.m (it's in the #"segueprofile")
//
// CarTableViewController.m
// TableViewStory
//
#import "CarTableViewController.h"
#import "CarTableViewCell.h"
#import "CarTableViewController.h"
#import "CarDetailViewController.h"
#import "OtherProfileUserViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
#import <Security/Security.h>
#import "SSKeychainQuery.h"
#import "SSKeychain.h"
#import "SBJson.h"
#interface NSURLRequest (DummyInterface)
+ (BOOL)allowsAnyHTTPSCertificateForHost:(NSString*)host;
+ (void)setAllowsAnyHTTPSCertificate:(BOOL)allow forHost:(NSString*)host;
#end
#interface CarTableViewController ()
#end
#implementation CarTableViewController
#synthesize carMakes = _carMakes;
#synthesize carModels = _carModels;
#synthesize carImages = _carImages;
#synthesize like = _like;
#synthesize likes = _likes;
#synthesize comments = _comments;
#synthesize username = _username;
#synthesize refuser = _refuser;
#synthesize profileImage = _profileImage;
- (void)viewDidLoad
{
[super viewDidLoad];
[self fetchJson];
[self.tableView reloadData];
// Initialize the refresh control.
self.refreshControl = [[UIRefreshControl alloc] init];
//self.refreshControl.backgroundColor = [UIColor blackColor];
//self.refreshControl.tintColor = [UIColor whiteColor];
[self.refreshControl addTarget:self
action:#selector(fetchJson)
forControlEvents:UIControlEventValueChanged];
}
- (void)viewWillAppear:(BOOL)animated
{
self.navigationController.navigationBar.hidden = YES;
}
- (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 [_jsonArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)anIndexPath
{
static NSString *CellIdentifier = #"carTableCell";
CarTableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CarTableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
cell.likeButton.tag = anIndexPath.row;
// Configure the cell...
cell.makeLabel.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"id"];
cell.likes.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"likes"];
cell.comments.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"comments"];
cell.username.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"username"];
cell.refuser.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"user_ref"];
cell.modelLabel.text = [[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"user"];
NSURL * imageURL = [NSURL URLWithString:[[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"imagen"]];
[cell.carImage setImageWithURL:imageURL placeholderImage:[UIImage imageNamed:#"imagen"] options:SDWebImageRefreshCached];
NSURL * imageURL2 = [NSURL URLWithString:[[_jsonArray objectAtIndex:anIndexPath.row] valueForKey:#"image"]];
[cell.profileImage setImageWithURL:imageURL2
placeholderImage:[UIImage imageNamed:#"image"]
options:SDWebImageRefreshCached];
return cell;
}
-(void)fetchJson {
self.carModels = [[NSMutableArray alloc] init];
self.carMakes = [[NSMutableArray alloc] init];
self.carImages = [[NSMutableArray alloc] init];
self.likes = [[NSMutableArray alloc] init];
self.comments = [[NSMutableArray alloc] init];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSString * urlString = [NSString stringWithFormat:#"http://webiste.com/service.php"];
NSURL * url = [NSURL URLWithString:urlString];
NSData * data = [NSData dataWithContentsOfURL:url];
NSError *error;
[_jsonArray removeAllObjects];
_jsonArray = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers|NSJSONReadingMutableLeaves
error:&error];
for(int i=0;i<_jsonArray.count;i++)
{
NSDictionary * jsonObject = [_jsonArray objectAtIndex:i];
NSString* imagen = [jsonObject objectForKey:#"imagen"];
[_carImages addObject:imagen];
NSDictionary * jsonObject2 = [_jsonArray objectAtIndex:i];
NSString* user = [jsonObject2 objectForKey:#"user"];
[_carMakes addObject:user];
NSDictionary * jsonObject3 = [_jsonArray objectAtIndex:i];
NSString* date = [jsonObject3 objectForKey:#"date"];
[_carModels addObject:date];
}
dispatch_async(dispatch_get_main_queue(), ^{
{
[self.tableView reloadData];
[self.refreshControl endRefreshing];
}});
}
);
//NSLog(#"LINK ==> %#", _jsonArray);
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
//NSIndexPath *indexPath = [self tableView indexPathForCell:sender];
//NSLog(#"LINK ==> %#", indexPath);
if ([segue.identifier isEqualToString:#"segueprofile"]) {
OtherProfileUserViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
}
if ([segue.identifier isEqualToString:#"segueprofile2"]) {
OtherProfileUserViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
}
if ([[segue identifier] isEqualToString:#"ShowCarDetails"])
{
CarDetailViewController *detailViewController = [segue destinationViewController];
NSIndexPath *myIndexPath = [self.tableView indexPathForSelectedRow];
detailViewController.carDetailModel = [[NSArray alloc]
initWithObjects:
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"date"],
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"id"],
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"imagen"],
nil];
}
}
- (void) alertStatus:(NSString *)msg :(NSString *) title
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title message:msg delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alertView show];
}
- (IBAction)plusOne:(UIButton *)sender {
NSLog(#"%ld",(long)sender.tag);
}
#end
Any help will be much appreciated.
Regards,

Related

Segue not updated inside TableViewController

Good afternoon,
I have created a Segue in my TableViewController where the user can touch the user profile and it sends that username to a ProfileViewController, where the user information is loaded (posts, image, info...) (something like a Facebook wall).
The problem is when I touch one user, it displays everything correctly, but when I touch another profile image, it displays the same ProfileViewController again, like the username is not updated and it's send wrong.
When I touch anywhere on the screen and then I touch again the user profile, in that case it works, but I need to make this work in every case.
I'm going to post my TableViewController if that helps you to find the problem because it's almost working, the only thing that I need to fix is that username that is not updated (Tap Gesture Recognizer over the image).
The segues are at the end of the code.
TableViewController.m
//
// CarTableViewController.m
//
#import "CarTableViewController.h"
#import "CarTableViewCell.h"
#import "CarTableViewController.h"
#import "CarDetailViewController.h"
#import "OtherProfileUserViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
#implementation CarTableViewController
#synthesize carMakes = _carMakes;
#synthesize carModels = _carModels;
#synthesize carImages = _carImages;
#synthesize likes = _likes;
#synthesize comments = _comments;
#synthesize username = _username;
#synthesize refuser = _refuser;
#synthesize profileImage = _profileImage;
- (void)viewDidLoad
{
[super viewDidLoad];
[self fetchJson];
[self.tableView reloadData];
// Initialize the refresh control.
self.refreshControl = [[UIRefreshControl alloc] init];
//self.refreshControl.backgroundColor = [UIColor blackColor];
//self.refreshControl.tintColor = [UIColor whiteColor];
[self.refreshControl addTarget:self
action:#selector(fetchJson)
forControlEvents:UIControlEventValueChanged];
}
- (void)viewWillAppear:(BOOL)animated
{
self.navigationController.navigationBar.hidden = YES;
}
- (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 [_jsonArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"carTableCell";
CarTableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CarTableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.makeLabel.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"id"];
cell.likes.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"likes"];
cell.comments.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"comments"];
cell.username.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
cell.refuser.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"user_ref"];
cell.modelLabel.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"user"];
NSURL * imageURL = [NSURL URLWithString:[[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"imagen"]];
[cell.carImage setImageWithURL:imageURL placeholderImage:[UIImage imageNamed:#"imagen"] options:SDWebImageRefreshCached];
NSURL * imageURL2 = [NSURL URLWithString:[[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"image"]];
[cell.profileImage setImageWithURL:imageURL2
placeholderImage:[UIImage imageNamed:#"image"]
options:SDWebImageRefreshCached];
return cell;
}
-(void)fetchJson {
self.carModels = [[NSMutableArray alloc] init];
self.carMakes = [[NSMutableArray alloc] init];
self.carImages = [[NSMutableArray alloc] init];
self.likes = [[NSMutableArray alloc] init];
self.comments = [[NSMutableArray alloc] init];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSString * urlString = [NSString stringWithFormat:#"http://website.com/service.php"];
NSURL * url = [NSURL URLWithString:urlString];
NSData * data = [NSData dataWithContentsOfURL:url];
NSError *error;
[_jsonArray removeAllObjects];
_jsonArray = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers|NSJSONReadingMutableLeaves
error:&error];
for(int i=0;i<_jsonArray.count;i++)
{
NSDictionary * jsonObject = [_jsonArray objectAtIndex:i];
NSString* imagen = [jsonObject objectForKey:#"imagen"];
[_carImages addObject:imagen];
NSDictionary * jsonObject2 = [_jsonArray objectAtIndex:i];
NSString* user = [jsonObject2 objectForKey:#"user"];
[_carMakes addObject:user];
NSDictionary * jsonObject3 = [_jsonArray objectAtIndex:i];
NSString* date = [jsonObject3 objectForKey:#"date"];
[_carModels addObject:date];
}
NSLog(#"carModels ==> %#", _jsonArray);
dispatch_async(dispatch_get_main_queue(), ^{
{
[self.tableView reloadData];
[self.refreshControl endRefreshing];
}});
}
);
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"segueprofile"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
OtherProfileUserViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
}
if ([segue.identifier isEqualToString:#"segueprofile2"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
OtherProfileUserViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
}
}
#end
Thanks in advance.
OK, here is one of the options.
1. Delete all existing segues (segueprofile and segueprofile2)
2. Connect your tableviewcontroller (important: not tableview but controller itself) with your details controller by push-segue and name it segueprofile3
3. Refactor your code in the following manner
#property (nonatomic, strong) NSIndexPath * selectedIndexPath;
...
- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)anIndexPath {
self.selectedIndexPath = anIndexPath;
[self performSegueWithIdentifier:#"segueprofile3" sender:nil];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"segueprofile3"]) {
OtherProfileUserViewController *destViewController = segue.destinationViewController;
destViewController.recipeName = [[_jsonArray objectAtIndex:selectedIndexPath.row] valueForKey:#"username"];
}
}
Another option. Place UIButton control right over avatar UIImageView. Create associated IBOutlet inside your CarTableViewCell class and make outlet connection.
#property (nonatomic, weak) UIButton * btnAvatar;
Next, modify CarTableViewController code
//1. declare new propery
#property (nonatomic, strong) id selectedProfile;
//2. implement future button tap handler
-(IBAction) btnAvatarDidPress:(id) sender {
int tag = ((UIButton *) sender).tag;
self.selectedProfile = [_jsonArray objectAtIndex:tag];
[self performSegueWithIdentifier:#"segueprofile3" sender:nil];
}
//Extend your cellForRowAtIndexPath method
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"carTableCell";
CarTableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CarTableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.makeLabel.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"id"];
cell.btnAvatar.tag = indexPath.row;
... rest of method
}
then remove didSelectRowAtIndexPath method, and connect btnAvatar Touch Up Inside action to btnAvatarDidPress method inside your controller code.
That's all I hope I've forgot nothing.
here is your example, in prepareForSegue, get the cell which button is in:
id v = sender;
while (![(v= v.superView) isKindOfClass:[UITableViewCell class]]
&& v!=nil) ;
if (v==nil)
// no ancestor view is cell.
else{
// now v is the cell.
NSIndexPath * indexPath = [self.tableView indexPathForCell:v];
// do the left
}

Click image inside a TableView

Good afternoon,
I'm trying to create a ProfileViewController (where the user profile is loaded, like profile image, likes and pictures) by making a click in the profile image inside a TableViewController (TableView).
At the moment is not working, because everything that I touch is going to a Segue (the post's segue where you can see the entry, likes and comments) but I need to create something (maybe it's a touch gesture) over the author image of that entry and show me his profile.
I have tried by creating a Tap Gesture Recognizer but it's not working. Also a Segue action directly in the Storyboard, and it's not working.
I'm going to show you an example, because at the ends it's like Facebook wall:
If I touch in the profile image it displays the user profile page with his information. I want to achieve that but with the image inside a TableView.
Here is what I got at the moment:
TableViewController.m
//
// CarTableViewController.m
// Copyright (c) 2014. All rights reserved.
//
#import "CarTableViewController.h"
#import "CarTableViewCell.h"
#import "CarTableViewController.h"
#import "CarDetailViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
#implementation CarTableViewController
#synthesize carMakes = _carMakes;
#synthesize carModels = _carModels;
#synthesize carImages = _carImages;
#synthesize likes = _likes;
#synthesize comments = _comments;
#synthesize username = _username;
#synthesize refuser = _refuser;
#synthesize profileImage = _profileImage;
- (void)viewDidLoad
{
[super viewDidLoad];
[self fetchJson];
[self.tableView reloadData];
// Initialize the refresh control.
self.refreshControl = [[UIRefreshControl alloc] init];
//self.refreshControl.backgroundColor = [UIColor blackColor];
//self.refreshControl.tintColor = [UIColor whiteColor];
[self.refreshControl addTarget:self
action:#selector(fetchJson)
forControlEvents:UIControlEventValueChanged];
}
- (void)viewWillAppear:(BOOL)animated
{
self.navigationController.navigationBar.hidden = YES;
}
- (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 [_jsonArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"carTableCell";
CarTableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[CarTableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
}
// Configure the cell...
cell.makeLabel.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"id"];
cell.likes.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"likes"];
cell.comments.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"comments"];
cell.username.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"username"];
cell.refuser.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"user_ref"];
cell.modelLabel.text = [[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"user"];
NSURL * imageURL = [NSURL URLWithString:[[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"imagen"]];
[cell.carImage setImageWithURL:imageURL placeholderImage:[UIImage imageNamed:#"imagen"] options:SDWebImageRefreshCached];
NSURL * imageURL2 = [NSURL URLWithString:[[_jsonArray objectAtIndex:indexPath.row] valueForKey:#"image"]];
[cell.profileImage setImageWithURL:imageURL2
placeholderImage:[UIImage imageNamed:#"image"]
options:SDWebImageRefreshCached];
return cell;
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"ShowCarDetails"])
{
CarDetailViewController *detailViewController = [segue destinationViewController];
NSIndexPath *myIndexPath = [self.tableView indexPathForSelectedRow];
detailViewController.carDetailModel = [[NSArray alloc]
initWithObjects:
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"date"],
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"id"],
[[_jsonArray objectAtIndex:[myIndexPath row]] valueForKey:#"imagen"],
nil];
}
}
-(void)fetchJson {
self.carModels = [[NSMutableArray alloc] init];
self.carMakes = [[NSMutableArray alloc] init];
self.carImages = [[NSMutableArray alloc] init];
self.likes = [[NSMutableArray alloc] init];
self.comments = [[NSMutableArray alloc] init];
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSString * urlString = [NSString stringWithFormat:#"http://website.com/service.php"];
NSURL * url = [NSURL URLWithString:urlString];
NSData * data = [NSData dataWithContentsOfURL:url];
NSError *error;
[_jsonArray removeAllObjects];
_jsonArray = [NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableContainers|NSJSONReadingMutableLeaves
error:&error];
for(int i=0;i<_jsonArray.count;i++)
{
NSDictionary * jsonObject = [_jsonArray objectAtIndex:i];
NSString* imagen = [jsonObject objectForKey:#"imagen"];
[_carImages addObject:imagen];
NSDictionary * jsonObject2 = [_jsonArray objectAtIndex:i];
NSString* user = [jsonObject2 objectForKey:#"user"];
[_carMakes addObject:user];
NSDictionary * jsonObject3 = [_jsonArray objectAtIndex:i];
NSString* date = [jsonObject3 objectForKey:#"date"];
[_carModels addObject:date];
}
NSLog(#"carModels ==> %#", _jsonArray);
dispatch_async(dispatch_get_main_queue(), ^{
{
[self.tableView reloadData];
[self.refreshControl endRefreshing];
}});
}
);
}
#end
Regards,
Thanks in advance.
I used to do this with a gesture recognizer...
UITapGestureRecognizer *tapped = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapOnCheck:)];
tapped.numberOfTapsRequired = 1;
tapped.numberOfTouchesRequired = 1;
tapped.cancelsTouchesInView = YES;
[cell.imageView addGestureRecognizer:tapped];
As you can see, my target action was "tapOnCheck:" and my image was cell.imageView, but you can simply adapt this code to your code...
Hope this helped!
Bye
You can try simple solution.
Remove all segues from cell.
Then You need to override in CarTableViewCell, UIView's method which called:
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
In this method detect touch location. Compare it with location of image.
If touch location is in image - send message to cell's delegate(it is your controller) which says that touch in Image on Cell.
Else - send message to cell's delegate which says that touch in other location in Cell.
Then choose segue to push.
Hope this will help you.

How to pass a UIImageView from UITableView (custom cell) to DetailViewController?

I'm tearing my hair out over this one. I'm trying to pass an image URL from my TableViewController to my DetailViewController (FullArticleViewController) so that I can set the UIImageView, and nothing I try seems to be working. See my code below:
MyTableViewController.h
#interface MyTableViewController : UIViewController <UISearchBarDelegate>{
IBOutlet UITableView *DoctorsTableView;
NSArray *Doctors;
NSMutableData *data;
NSArray *searchResults;
}
#property (strong, nonatomic) NSString *cellImageLink;
#property (strong, nonatomic) UINavigationBar *navigationBar;
MyTableViewController.m
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *DoctorsTableIdentifier = #"DoctorsCell";
DoctorsCell *cell = (DoctorsCell *)[tableView dequeueReusableCellWithIdentifier:DoctorsTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"DoctorsCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
NSLog(#"Using the search results");
cell.firstnameLabel.text = [[searchResults objectAtIndex:indexPath.row] objectForKey:#"node_title"];
cell.descriptionLabel.text = [[searchResults objectAtIndex:indexPath.row] objectForKey:#"Opening Paragraph"];
NSString *firstLink = [[NSString alloc] init];
firstLink = [[[searchResults objectAtIndex:indexPath.row] objectForKey:#"Image"] objectForKey:#"filename"];
NSString *secondLink = [[NSString alloc] init];
secondLink = [NSString stringWithFormat:#"URL HERE%#",firstLink];
NSLog(#"second link is %#", secondLink);
cellImageLink = secondLink;
[cell.featureImage sd_setImageWithURL:[NSURL URLWithString:secondLink]];
} else {
NSLog(#"Using the Full List!");
cell.firstnameLabel.text = [[Doctors objectAtIndex:indexPath.row] objectForKey:#"node_title"];
cell.descriptionLabel.text = [[Doctors objectAtIndex:indexPath.row] objectForKey:#"Opening Paragraph"];
NSString *firstLink = [[NSString alloc] init];
firstLink = [[[Doctors objectAtIndex:indexPath.row] objectForKey:#"Image"] objectForKey:#"filename"];
NSString *secondLink = [[NSString alloc] init];
secondLink = [NSString stringWithFormat:#"URL HERE%#",firstLink];
NSLog(#"second link is %#", secondLink);
cellImageLink = secondLink;
[cell.featureImage sd_setImageWithURL:[NSURL URLWithString:secondLink]];
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
FullArticleViewController *detailViewController = [[FullArticleViewController alloc]
initWithNibName:#"FullArticleViewController" bundle:nil];
if ([searchResults count]) {
detailViewController.title = [[searchResults objectAtIndex:indexPath.row] objectForKey:#"node_title"];
detailViewController.articleDetail = [searchResults objectAtIndex:indexPath.row];
} else {
detailViewController.title = [[Doctors objectAtIndex:indexPath.row] objectForKey:#"node_title"];
detailViewController.articleDetail = [Doctors objectAtIndex:indexPath.row];
NSLog(#"%#", Doctors);
}
FullArticleViewController *viewController = [[FullArticleViewController alloc]
initWithNibName:#"DetailViewController"
bundle:nil];
viewController.featureImage = searchResults[indexPath.row][#"Image"][#"filename"];
[self.navigationController pushViewController:detailViewController animated:YES];
}
FullArticleViewController.h (detailview)
#interface FullArticleViewController : UIViewController
{
IBOutlet UIScrollView *scroller;
IBOutlet UILabel *firstnameLabel;
IBOutlet UILabel *descriptionLabel;
IBOutlet UILabel *bodyLabel;
}
#property (nonatomic, copy) NSDictionary *articleDetail;
#property (strong, nonatomic) IBOutlet UIImageView *featureImage;
-(IBAction)goBack:(id)sender;
FullArticleViewController.m (detailview)
#import "SDWebImage/UIImageView+WebCache.h"
#import "FullArticleViewController.h"
#import "DoctorsCell.h"
#import "MyTableViewController.h"
#interface FullArticleViewController ()
#end
#implementation FullArticleViewController
#synthesize articleDetail;
#synthesize featureImage;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
featureImage = [[UIImageView alloc] init];
[scroller setScrollEnabled:YES];
[scroller setContentSize:CGSizeMake(320, 5000)];
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
firstnameLabel.text = [articleDetail objectForKey:#"node_title"];
descriptionLabel.text = [articleDetail objectForKey:#"Opening Paragraph"];
bodyLabel.text = [articleDetail objectForKey:#"Body"];
}
MyTableViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
FullArticleViewController *detailViewController = [[FullArticleViewController alloc]
initWithNibName:#"FullArticleViewController" bundle:nil];
if ([searchResults count]) {
detailViewController.title = [[searchResults objectAtIndex:indexPath.row] objectForKey:#"node_title"];
detailViewController.articleDetail = [searchResults objectAtIndex:indexPath.row];
detailViewController.cellImageLink = searchResults[indexPath.row][#"Image"][#"filename"];
} else {
detailViewController.title = [[Doctors objectAtIndex:indexPath.row] objectForKey:#"node_title"];
detailViewController.articleDetail = [Doctors objectAtIndex:indexPath.row];
detailViewController.cellImageLink = Doctors[indexPath.row][#"Image"][#"filename"];
}
NSLog(#"cellImageLink = %#", detailViewController.cellImageLink);
[self.navigationController pushViewController:detailViewController animated:YES];
}
FullArticleViewController.m
Set the image in viewDidLoad
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
NSLog(#"cellImageLink = %#", self.cellImageLink);
featureImage = [[UIImageView alloc] init];
//maybe set the frame here?
[self.featureImage sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:#"http://domainnamehere.com/%#",cellImageLink]]];
[scroller setScrollEnabled:YES];
[scroller setContentSize:CGSizeMake(320, 5000)];
firstnameLabel.text = [articleDetail objectForKey:#"node_title"];
descriptionLabel.text = [articleDetail objectForKey:#"Opening Paragraph"];
bodyLabel.text = [articleDetail objectForKey:#"Body"];
}
Typically you would set detail view properties upon cell selection right before pushing the new view controller. Something like this would do it:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
FullArticleViewController *detailView = [[FullArticleViewController alloc] init];
detailView.articleDetail = [searchResults objectAtIndex:indexPath.row];
[self.navigationController pushViewController detailView animated:YES];
}
Notice I am using the default initializer for your view controller and am also assuming you are using a UINavigationController. You may need to change one or both of these to fit your code.
Then, you would want to use the same SDWebImage category to set the image url in viewDidLoad of FullArticleViewController.m. It will probably look something like this:
- (void)viewDidLoad
{
[scroller setScrollEnabled:YES];
[scroller setContentSize:CGSizeMake(320, 5000)];
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
firstnameLabel.text = [articleDetail objectForKey:#"node_title"];
descriptionLabel.text = [articleDetail objectForKey:#"Opening Paragraph"];
bodyLabel.text = [articleDetail objectForKey:#"Body"];
[self.featureImage sd_setImageWithURL::[NSURL URLWithString:[[self.articleDetail objectForKey:#"Image"] objectForKey:#"filename"]];
}

How do I add a try catch block for a uiimageview that does not load an image?

I am loading an image view from an online server (Google Sites in this case) based on what the user has selected from a table view (the table view is being populated from a plist which is loaded online). The code for that is already working but I'm trying to add an alert view for images that do not load. This is my Table View Controller.
#import "TableViewController.h"
#import "MapViewController.h"
#interface TableViewController ()
#end
#implementation TableViewController
#synthesize trailList;
#synthesize trailView;
- (void)viewDidLoad
{
[super viewDidLoad];
NSURL *url = [NSURL URLWithString: #"https://sites.google.com/site/majorprojectgjk/Trails.plist"];
trailList = [[NSMutableArray alloc] initWithContentsOfURL: url];
// Do any additional setup after loading the view, typically from a nib.
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [trailList count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellid = #"trailCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier: cellid];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier: cellid];
}
cell.textLabel.text = [trailList objectAtIndex: indexPath.row];
return cell;
}
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString: #"pushView"])
{
NSIndexPath *indexPath = [self.trailView indexPathForSelectedRow];
MapViewController *mvc = segue.destinationViewController;
mvc.subjects = [trailList objectAtIndex: indexPath.row];
}
}
This would be my Map View Controller code.
#import "MapViewController.h"
#interface MapViewController ()
#end
#implementation MapViewController
#synthesize map;
#synthesize subjects;
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear: (BOOL)animated];
NSString *site = #"https://sites.google.com/site/majorprojectgjk/";
NSLog(#"Display: %#", subjects);
NSString *mapString = #"Map";
NSString *png = #".png";
//NSString *url = [NSString stringWithFormat: #"%#%#%#%#",site, subjects, mapString, png];
#try
{
NSString *space = subjects;
if ([space rangeOfString:#" "].location == NSNotFound)
{
NSString *url = [NSString stringWithFormat: #"%#%#%#%#",site, subjects, mapString, png];
map.image = [UIImage imageWithData: [NSData dataWithContentsOfURL: [[NSURL alloc] initWithString: url]]];
NSLog(#"URL: %#", url);
}
else
{
NSLog(#"string contains space");
NSString *removeSpace = [subjects stringByReplacingOccurrencesOfString:#" " withString:#""];
NSString *url = [NSString stringWithFormat: #"%#%#%#%#",site, removeSpace, mapString, png];
map.image = [UIImage imageWithData: [NSData dataWithContentsOfURL: [[NSURL alloc] initWithString: url]]];
NSLog(#"URL %#", url);
}
}
#catch (NSException *ex) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error!" message:#"The map could not load!" delegate: self cancelButtonTitle:#"Ok" otherButtonTitles: nil];
[alert show];
}
}
As I said earlier, the code for these are working perfectly fine. The image is downloading perfectly fine from the URL and the data is being parsed from the table view as well. I would like to know how to use a #try #catch block in order to alert the user that the UIImageView is empty (this happens when the URL is invalid and the map is not loaded into the server yet).
`enter code here`#catch(NSException *ex)
{
NSString *str=[ex copy];
//write code for alert
}

TableView does not reloaddata when I clicked "More data..." at the last row of tableView

Request my test webService for the data,
The tableView's last row is "More data..."
when click this row, send another request to get more data,
and I use [tableView reloaddata] many times, but there is nothing
happened, and I dont know why.So,please help me with this problem.
Thank you in advance.
and there is my tableViewController.h class:
#import <UIKit/UIKit.h>
#import "NoticeDetailViewController.h"
#interface NoticeViewController : UIViewController
<UITableViewDataSource,UITableViewDelegate>
{
NSMutableArray *allNoticeArray;
NSArray *addNoticeArray;
NSInteger totalNotice;
NSInteger pageIndex;
UITableView *tableView;
}
#property (nonatomic, retain) NSMutableArray *allNoticeArray;
#property (nonatomic, retain) NSArray *addNoticeArray;
#property NSInteger totalNotice;
#property NSInteger pageIndex;
#property (nonatomic, retain) UITableView *tableView;
- (NSMutableArray *)getNoticeList :(NSInteger)pageIndex;
#end
And tableViewController.m class:
#import "NoticeViewController.h"
#import "Notice.h"
#import "OAURLEncodingAdditions.h"
#interface NoticeViewController ()
#end
#implementation NoticeViewController
#synthesize allNoticeArray;
#synthesize addNoticeArray;
#synthesize pageIndex;
#synthesize tableView;
#synthesize totalNotice;
- (NSMutableArray *)getNoticeList :(NSInteger)pageIndex
{
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
NSString *userId = appDelegate.user.userId;
NSString *departmentId = appDelegate.user.departmentId;
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:#"https://xxx.xxx.xx.xx/FMS/Pages/Service/FMService.svc/GetAnnouncement?userId=%#&departmentId=%#&pageIndex=%d&pageSize=%d",userId,departmentId,self.pageIndex,1]];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setValidatesSecureCertificate:NO];
[request startSynchronous];
NSError *error = [request error];
if (!error)
{
NSString *responseString = [request responseString];
NSDictionary *responseDict = [responseString JSONValue];
NSArray *noticeArray = [responseDict objectForKey:#"d"];
NSMutableArray *arrayOfAllNotice = [[NSMutableArray alloc] init];
for (NSDictionary *noticeDic in noticeArray)
{
NSString *body = [noticeDic objectForKey:#"Body"];
NSString *departmentName = [noticeDic objectForKey:#"DepartmentName"];
NSString *noticeId = [noticeDic objectForKey:#"Id"];
NSString *isTop = [noticeDic objectForKey:#"IsTop"];
NSString *readState = [noticeDic objectForKey:#"ReadState"];
NSString *realName = [noticeDic objectForKey:#"RealName"];
NSString *title = [noticeDic objectForKey:#"Title"];
int noid = [noticeId intValue];
int isto = [isTop intValue];
int read = [readState intValue];
Notice *notice = [[Notice alloc] initWithBody:body
departmentName:departmentName
noticeId: noid
isTop:isto
readState:read
realName:realName
title:title];
[arrayOfAllNotice addObject:notice];
}
self.addNoticeArray = [[NSArray alloc] initWithArray:arrayOfAllNotice];
}
else
{
....
}
[allNoticeArray addObjectsFromArray:addNoticeArray];
NSLog(#"allNoticeArray count: %d",[allNoticeArray count]); //Here:When the last row clicked, the number changes:1->2
[self.tableView reloadData];
return allNoticeArray;
}
#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSInteger theNumberOfRowsInSection;
if ( [allNoticeArray count] < (self.totalNotice))
{
theNumberOfRowsInSection = [allNoticeArray count]+1;
}
if ( [allNoticeArray count] == (self.totalNotice))
{
theNumberOfRowsInSection = [allNoticeArray count];
}
return theNumberOfRowsInSection;
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.tableView reloadData];
static NSString *NoticeListTableIdentifier = #"NoticeListTableIdentifier";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:NoticeListTableIdentifier];
if ( cell == nil )
{
cell = [[[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault reuseIdentifier:NoticeListTableIdentifier] autorelease];
}
if ( [allNoticeArray count] < (self.totalNotice) )
{
if ( [indexPath row] != [allNoticeArray count])
{
NSUInteger row = [indexPath row];
Notice *noticeOfTheRow = [allNoticeArray objectAtIndex:row];
NSString *title = noticeOfTheRow.title;
cell.textLabel.text = title;
}
else
{
cell.textLabel.text = #"More...";
}
}
if ( [allNoticeArray count] == (self.totalNotice) )
{
NSUInteger row = [indexPath row];
Notice *noticeOfTheRow = [allNoticeArray objectAtIndex:row];
NSString *title = noticeOfTheRow.title;
cell.textLabel.text = title;
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if ( [indexPath row] != [allNoticeArray count])
{
NSUInteger row = [indexPath row];
Notice *notice = [allNoticeArray objectAtIndex:row];
NSString *noticeDetailTitle = notice.title;
NoticeDetailViewController *noticeDetailViewController = [[[NoticeDetailViewController alloc] init] autorelease];
noticeDetailViewController.title = noticeDetailTitle;
ticeDetailViewController.noticeIdForGet = notice.noticeId;
[self.navigationController pushViewController:noticeDetailViewController animated:YES];
}
if ( [indexPath row] == [allNoticeArray count])
{
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.labelText = #"reload...";
self.pageIndex ++;
[self getNoticeList:self.pageIndex];
[self.tableView reloadData];
[MBProgressHUD hideHUDForView:self.view animated:YES];
}
}
- (void)pushBack
{
[self dismissModalViewControllerAnimated:YES];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.allNoticeArray = [[NSMutableArray alloc] init];
self.pageIndex = 1;
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.labelText = #"reload...";
self.title = #"Notice";
UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:#"back"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(pushBack)];
self.navigationItem.leftBarButtonItem = leftButton;
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithTitle:#"reload"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(reloadNotice)];
self.navigationItem.rightBarButtonItem = rightButton;
self.allNoticeArray = [self getNoticeList:self.pageIndex];
[MBProgressHUD hideHUDForView:self.view animated:YES];
}
#end
change:
if ( [indexPath row] == [allNoticeArray count])
to:
if ( [indexPath row] == [allNoticeArray count]-1)
The reason is that array (and row) indexing are base 0. So if an array has, say 3 objects, last object's index is 2
BTW,with the new language features, there's no need to declare the ivars in the interface. The compiler will take care of them if you have already declared the properties and synthesized them.
#interface NoticeViewController : UIViewController
<UITableViewDataSource,UITableViewDelegate>
{
NSMutableArray *allNoticeArray;
NSArray *addNoticeArray;
NSInteger totalNotice;
NSInteger pageIndex;
UITableView *tableView;
}
//...
#end

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