Hard to explain, but I'll try;
I am making an app for showing roadcameras. I have a TableViewController which leads to a DetailViewController.
What I want to achieve is that when I click on Row 1 it shows the picture from www.url1.com. If I click on Row 2, it shows the picture from www.url2.com, and so on. I can't seem to figure out how to do this.
I first started by using this code:
_place = #[#"E6 Minnesund",
#"E6 Heia"];
_url = #[#"http://webkamera.vegvesen.no/kamera?id=450848",
#"http://webkamera.vegvesen.no/kamera?id=100102"];
But stopped because I couldn't see how I could get this working...
Any ideas?
And please don't just rate the post down because you think its stupid. I'm kinda new to Xcode and for me, this is hard. Thanks in advance
I can post the whole project folder if necessary
just write the code in didselectrowAtIndexPath
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
DetailViewController *picker = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
picker.row=indexPath.row;
[self.navigationController pushViewController:picker];
}
and in DetailViewController
in .h
#interface DetailViewController : UIViewController
{
}
#property(nonatomic,assign)int row;
in .m
- (void)viewDidLoad
{
dispatch_queue_t myqueue = dispatch_queue_create("myqueue", NULL);
// execute a task on that queue asynchronously
dispatch_async(myqueue, ^{
NSURL *url = [NSURL URLWithString:[_url objectAtIndex:row];
NSData *data = [NSData dataWithContentsOfURL:url];
dispatch_async(dispatch_get_main_queue(), ^{
Image.image = [UIImage imageWithData:data]; //UI updates should be done on the main thread
UIImageView * myImageView = [[UIImageView alloc] initWithImage:image];
[self.view addSubview:myImageView];
});
});
Related
(Let me first put the error up here so that I don't forget it: could not dequeue a view of kind: UICollectionElementKindCell with identifier Cell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard)
I've got a regular UICollectionViewController that loads just fine. But I also have another controller (UserViewController) that loads a CollectionView delegate (UserPlaceViewController).
I get really confused with what I have to load in the delegate and what I have to load in the current controller. But anyway here's the delegate as-is:
#import "UserPlaceViewController.h"
#interface UserPlaceViewController ()
#end
#implementation UserPlaceViewController
#synthesize placeArray, placeTable;
- (void)viewDidLoad
{
[super viewDidLoad];
// placeTable.delegate = self;
UICollectionViewFlowLayout* flowLayout = [[UICollectionViewFlowLayout alloc]init];
flowLayout.itemSize = CGSizeMake(145, 150);
[flowLayout setScrollDirection:UICollectionViewScrollDirectionVertical];
placeTable = [[UICollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:flowLayout];
//self.collectionView.frame = CGRectMake(10, 120, self.view.bounds.size.width-20, self.view.bounds.size.height-50);
placeTable.autoresizesSubviews = YES;
placeTable.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
//placeTable.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
placeTable.scrollEnabled = YES;
self.view = placeTable;
NSLog(#"%lu", (unsigned long)[placeArray count]);
}
That's basically the whole thing. Couple other things at the end... but that's it for the most part.
And here are the relevent parts of the ViewController:
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setNavigationBarHidden:YES animated:YES];
UserPlaceViewController *collectionView = [[UserPlaceViewController alloc] initWithNibName:#"UserPlace" bundle:nil];
UINib * placeCell = [UINib nibWithNibName:#"Shops" bundle:nil];
[collectionView.placeTable registerNib:placeCell forCellWithReuseIdentifier:cellIdentifier];
- (void) fetchedData: (NSData *) responseData
{
UserPlaceViewController * uptvLike = [[UserPlaceViewController alloc] init];
if (IS_IPHONE5) {
uptvLike.view.frame = CGRectMake(0, 0, 320, 300);
}
else
{
uptvLike.view.frame = CGRectMake(0, 0, 320, 200);
}
uptvLike.placeTable.delegate = self;
uptvLike.placeTable.dataSource = self;
uptvLike.placeTable.layer.borderWidth = 1.0f;
uptvLike.placeTable.layer.borderColor = [UIColor colorWithRed:5/255.0f green:96/255.0f blue:255/255.0f alpha:1.0f].CGColor;
[uptvLike.placeTable reloadData];
[self.scrollView addSubview:uptvLike.view];
}
And finally:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
PlaceCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
Place * p = [placeArray objectAtIndex:indexPath.item];
cell.placeName.text = p.PName;
cell.placeImg.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:p.PImage]]];
return cell;
}
Like I said: I know how a UICollectionView is supposed to work. I've got one running. I know you have to register a nib or class in viewDidLoad (I've registered a Nib.) But I'm confused over how exactly to load this delegate and where to load what. For example I see that I'm initialising the collectionview in both the delegate and the view controller. I'm also confused about WHERE exactly I should load the nib... (delegates give me a headache...)
So what the hell... It's raining. I figured I'd ask.
Ok. You want a UICollectionView but you also want to have a lot of regular "View" items on the same screen? Two things are important:
1. You don't need two ViewControllers. You just need to load what would normally be your UICollectionViewController as a regular ViewController:
#interface UserViewController : UIViewController <UICollectionViewDataSource, UIScrollViewDelegate>
2. Once that's done you can load your collectionview on TOP of that view:
UICollectionViewFlowLayout* flowLayout = [[UICollectionViewFlowLayout alloc]init];
flowLayout.itemSize = CGSizeMake(145, 150);
[flowLayout setScrollDirection:UICollectionViewScrollDirectionVertical];
self.collectionView = [[UICollectionView alloc] initWithFrame:self.view.frame collectionViewLayout:flowLayout];
[self.scrollView addSubview:self.collectionView];
[self.view addSubview:HUD];
UINib * placeCell = [UINib nibWithNibName:#"UserCell" bundle:nil];
[self.collectionView registerNib:placeCell forCellWithReuseIdentifier:#"Cell"];
The rest is just your standard CollectionView stuff.
So I switched from a UITableView to a UICollectionView. The cells are all loading just fine and look beautiful, but now I can no longer select any of them. The taps are recognized in the logs, but it doesn't take me to the view that it's supposed to take me to anymore.
The only things that changed really are the ones the ones you see commented out in the "cellForItem" section. Everything else is identical to how it was when it was working in the TableView. It's just supposed to take me to the ViewController specified when you tap. Instead the tap is recorded, but it does nothing. Any help would be appreciated.
Also I tried getting rid of the [collectionView deselectItemAtIndexPath:indexPath animated:YES];
...but it didn't make any difference.
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
PlaceCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
// Configure the cell
//UINib * placeCell = [UINib nibWithNibName:#"Shops" bundle:nil];
// NSArray *topLevelItems = [placeCell instantiateWithOwner:self options:nil];
// cell = [topLevelItems objectAtIndex:0];
Place *p = [_entries objectAtIndex:indexPath.row];
cell.placeName.text = p.PName;
NSLog(#"p:%#",p.PName);
cell.placeName.textColor = [UIColor colorWithRed:3/255.0f green:6/255.0f blue:4/255.0f alpha:1.0f];
NSString *pIcon;
pIcon = typeName;
//NSLog(pIcon);
cell.placeImg.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:p.PImage]]];
NSLog(#"i:%#",p.PImage);
return cell;
}
-(void) collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
NSLog(#"Tap Recognized");
[collectionView deselectItemAtIndexPath:indexPath animated:YES];
Place *p = [_entries objectAtIndex:indexPath.row];
DetailPlaceViewController * pvc = [[DetailPlaceViewController alloc] init];
[pvc setPlace:p];
[self.navigationController pushViewController:pvc animated:YES];
}
Well this one was fun...
For some odd reason my navigation controller isn't working... so of course using the navigation controller to load a view wasn't going to work. Simple enough solution... load the view without the navigation controller. I was just going to delete this question, but maybe somebody might be in a similar situation one day:
[self presentViewController:pvc animated:YES completion:nil];
I have been looking until 6 o'clock this morning, but I can't figure out why the didSelectRowAtIndexPath method is not being called. I am getting quite desparate on this one.
The tableview is shown properly, but I cannot succeed to enable the selection of a cell.
In the header file , I added:
#interface AlertsTable : UIViewController<UITableViewDelegate, UITableViewDataSource, CMPopTipViewDelegate>{
UITableView *TableView;
}
#property (nonatomic, retain) UITableView *TableView;
In the implementation file:
#synthesize TableView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
//Set the title
//Format Alerts table
//self.view.backgroundColor = [UIColor redColor];
CGFloat sideMargin = 10;
CGFloat topBottomMargin = 44;
CGFloat originX = sideMargin;
// compute width based on view size
CGFloat sizeWidth = (self.view.bounds.size.width - (sideMargin * 2));
CGFloat originY = topBottomMargin;
// compute height based on view size
CGFloat sizeHeight = (self.view.bounds.size.height - (topBottomMargin * 2));
//self.view.frame = CGRectMake(originX, originY, sizeWidth, sizeHeight);
self.TableView = [[UITableView alloc] initWithFrame:CGRectMake(originX, originY, sizeWidth, sizeHeight) style:UITableViewStylePlain];
//Initialize the array.
AlertsItems = [[NSMutableArray alloc] initWithObjects: #"Alert 1", #"Alert 2", #"Alert 3" , #"Alert 4", #"Alert 5", #"Alert 6", nil];
[self.TableView setDelegate:self];
[self.TableView setDataSource:self];
[self.view addSubview:TableView];
TableView.userInteractionEnabled = YES;
TableView.allowsSelection = YES;
TableView.allowsSelectionDuringEditing = YES;
NSLog(#"delegate:%# dataSource:%#", self.TableView.delegate, self.TableView.dataSource);
}
The delegate and datasource are both not nil on the check.
Note that the "Alertstable" inherits from a UIViewController, not a UITableViewController.
This is necessary due to the implementation I chose: the tableview is shown on a popupwindow shown on the screen (using another class that I took from the internet).
This is the didSelectRowAtIndexPath method:
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *alertString = [NSString stringWithFormat:#"Clicked on row #%d", [indexPath row]];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:alertString message:#"" delegate:self cancelButtonTitle:#"Done" otherButtonTitles:nil];
[alert show];
}
The methods:
[super touchesBegan:...];
[super touchesEnded:...];
[super touchesMoved:...];
are not implemented.
I added the AlertTable from another ViewController
AlertsTable *AlertTable = [[AlertsTable alloc] WithButton:sender withArray:self.PopTipViews];
[self.view addSubview:AlertTable.view];
I also implemented:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Set up the cell...
[[cell textLabel] setText:[AlertsItems objectAtIndex:indexPath.row]];
NSLog (#"%#",[AlertsItems objectAtIndex:indexPath.row]);
return cell;
}
Do you have any idea what the problem could be?
I'm not very experienced in Xcode and I'm really stuck.
Edit:
I know that it is not custom, but the link to the project can be found here (perhaps I'm overlooking something:
https://www.bilbu.be/BarConnect_v2.zip
The LoginViewController.xib is not properly linked (it is available in the en.lproj subfolder) so you may need to link first (I noticed too late and I had the file uploaded by a friend before - I cannot re-upload it myself unfortunately).
ViewController VC class calls the AlertsTable VC class. There is more in the project that I suppose you can ignore...
Note that the purpose of this project is only to serve as visual interface prototype. It is not meant to be the best optimized application (this is what other developers will do). If this doesn't work, I will use Photoshop to create the interfaces, but I guess that's not gonna be as convincing...
I successfully compiled your project. The problem is that you're going against the MVC pattern. The controller (AlertsTable) is inside of a view (CMPopTipView). I'd suggest you to rethink the hierarchy of the controllers and views. Hope this will help you.
Try changing
TableView.userInteractionEnabled = YES;
TableView.allowsSelection = YES;
TableView.allowsSelectionDuringEditing = YES;
to
self.TableView.userInteractionEnabled = YES;
self.TableView.allowsSelection = YES;
self.TableView.allowsSelectionDuringEditing = YES;
and are you allocating self.TableView? Something like...
self.TableView = [[UITableView alloc] init];//[[UITableView alloc] initWithStyle:UITableViewStylePlain];
i wanted to display the detail view after tapping the right button on the annotation of mapview in xcode but i could not get the view to display ,
my code:
- (void)showDetails:(id)sender
{
[self.navigationController setToolbarHidden:YES animated:NO];
[self.navigationController pushViewController:self.detailViewController animated:YES];
}
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
{
static NSString* BridgeAnnotationIdentifier = #"bridgeAnnotationIdentifier";
MKPinAnnotationView* customPinView = [[[MKPinAnnotationView alloc]
initWithAnnotation:annotation reuseIdentifier:BridgeAnnotationIdentifier] autorelease];
customPinView.pinColor = MKPinAnnotationColorPurple;
customPinView.animatesDrop = YES;
customPinView.canShowCallout = YES;
UIButton* rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
NSLog(#"%#",rightButton);
[rightButton addTarget:self
action:#selector(showDetails:)
forControlEvents:UIControlEventTouchUpInside];
customPinView.rightCalloutAccessoryView = rightButton;
return customPinView;//[kml viewForAnnotation:annotation];
}
The showDetails method gets called but cannot push the detailViewController to the top ,
[self.navigationController pushViewController:self.detailViewController animated:YES];
this code should have pushed detail view to the top and displayed the detailView but it does not please ,
any help would be greatly appreciated , what i wanted to do is when anybody taps on the right button of annotation on the mapview ,i wanted to display a detail view , thanking you in advance..
There is no target/action required, there is a delegate method that gets called when the callout accessory view is tapped: mapView:annotationView:calloutAccessoryControlTapped:
Thank you , for your help i am able to open the detailViewController by changing my showDetails method
- (void)showDetails:(id)sender
{
detailViewController *dvController = [[detailViewController alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController:dvController animated:YES];
[dvController release];
dvController = nil;
}
My DetailView of a SplitView has a Map with Annotations. Upon clicking an Annotation the entire window (and not just the DetailView) should go to another view. Unfortunately that doesn't work.
This is how I'm creating my NavigationController in my AppDelegate
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
[self.window addSubview:navigationController.view];
This is how I'm creating the SplitView
left = [[MapSplitViewLeft alloc] initWithStyle:UITableViewStylePlain];
right = [[MapViewController alloc] init];
splitViewController = [[UISplitViewController alloc] init];
splitViewController.viewControllers = [NSArray arrayWithObjects:left,right, nil];
self.view = splitViewController.view;
left.right = right;
[left release];
[right release];
And that's what's being called when clicked on an Annotation:
- (void)showDetails:(id)sender {
NSLog(#"Yes it works");
VenueViewController *vviewcontroller = [[VenueViewController alloc]
initWithNibName:#"VenueViewController" bundle:[NSBundle mainBundle]];
AppDelegate *del = (AppDelegate *)[UIApplication sharedApplication].delegate;
[del.navigationController pushViewController:vviewcontroller animated:YES];
}
When I click on the Annotation I only get "Yes it works" but nothing else is happening.
Thanks so much for any advise.
Every UIViewController has the property "navigationController". Try with your current ViewController to push the new Viewcontroller.
[self.navigationController pushViewController:vviewcontroller animated:YES];
edit: Sorry, you mean the entire window! I think that would not work.
edit2: Maybe this answer can help you how to add a view over window in uiviewcontroller But i think thats that view is not on your navigationController-Stack