Good Morning Community,
I have a problem, because I have implemented an CoverFlowViewController.m with an Delegate method, but the Debugger NEVER jump in this method, does anyone know why?
Here is the code:
- (void)viewDidLoad {
[super viewDidLoad];
UIButton *weiter = [UIButton buttonWithType:UIButtonTypeRoundedRect];
weiter.frame = CGRectMake(100, 400, 120, 40);
[weiter addTarget:self action:#selector(goToChart) forControlEvents:UIControlEventTouchUpInside];
NSString *ansicht = #"Weiter";
[weiter setTitle:ansicht forState:UIControlStateNormal];
[self.view addSubview:weiter];
// loading images into the queue
loadImagesOperationQueue = [[NSOperationQueue alloc] init];
NSString *imageName;
for (int i=0; i < 10; i++) {
imageName = [[NSString alloc] initWithFormat:#"cover_%d.jpg", i];
imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:imageName]];
UIImage *aktuellesImage = imageView.image;
UIImage *scaledImage = [aktuellesImage scaleToSize:CGSizeMake(100.0f, 100.0f)];
[(AFOpenFlowView *)self.view setImage:scaledImage forIndex:i];
}
[(AFOpenFlowView *)self.view setNumberOfImages:10];
}
- (void)openFlowView:(AFOpenFlowView *)openFlowView selectionDidChange:(int)index{
NSLog(#"%d is selected",index);
}
Does anyone know why the Debugger (= the Programm) never jump into the selectionDidChange() method?
I have no solution since three days, and hope somebody could help me?
Greetings and Thank you beforehand
Marco
are you sure you connected the viewDelegate to your viewController?
Please add NSLog(#"Delegate: %#", ((AFOpenFlowView*)self.view).viewDelegate); at the end of your viewDidLoad method to see if it is connected.
Add
((AFOpenFlowView *)self.view).viewDelegate = self; on the init or viewDidLoad method
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.
I am using the following code to show an Activity Indicator while some data is loading. The problem is that when I try to hide it again. The Activity Indicator stays put. The screen lightens a bit but that is it.
To show it:
self.overlayView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.overlayView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3];
self.activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
self.activityIndicator.center = self.overlayView.center;
[self.overlayView addSubview:self.activityIndicator];
[self.activityIndicator startAnimating];
[self.tableView addSubview:self.overlayView];
To hide it:
[self.activityIndicator stopAnimating];
[self.overlayView removeFromSuperview];
Try to add your overlayView to the superview of your tableView :
[self.view.superview addSubview:self.overlayView];
I figured it out with a combination of stackoverflow questions. Here is my code to show the UIActivityIndicatorView
-(void)loadView {
[super loadView];
self.overlayView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.overlayView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3];
self.activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
self.activityIndicator.center = self.overlayView.center;
[self.overlayView addSubview:self.activityIndicator];
[self.tableView addSubview:self.overlayView];
[self.activityIndicator startAnimating];
}
Here is the code to hide it. It looks like putting the code in the loadView event made all the difference.
[overlayView removeFromSuperview];
I'm having a little trouble switching scenes (or even displaying sprites) on my CCscene UserLevelCreation, but it only happens after i use the UIImagePickerController to take/accept a picture, And then when I try to switch scenes, It crashes with the error:
"Could not attach texture to framebuffer"
this is the code I use to take a picture:
-(void)takePhoto{
AppController *appdel = (AppController*) [[UIApplication sharedApplication] delegate];
#try {
uip = [[UIImagePickerController alloc] init] ;
uip.sourceType = UIImagePickerControllerSourceTypeCamera;
uip.allowsEditing = YES;
uip.delegate = self;
}
#catch (NSException * e) {
uip = nil;
}
#finally {
if(uip) {
[appdel.navController presentModalViewController:uip animated:NO];
}
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
NSString * LevelImage;
LevelImage=[info objectForKey:UIImagePickerControllerOriginalImage];
AppController *appdel = (AppController*) [[UIApplication sharedApplication] delegate];
[appdel.navController dismissModalViewControllerAnimated:YES];
[NSThread detachNewThreadSelector:#selector(writeImgToPath:) toTarget:self withObject:LevelImage];
}
And the WriteImageToPath function:
-(void)writeImgToPath:(id)sender
{
UIImage *image = sender;
NSArray *pathArr = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask,
YES);
CGSize size;
int currentProfileIndex = 1;
NSString *path = [[pathArr objectAtIndex:0]
stringByAppendingPathComponent:[NSString stringWithFormat:#"CustomLevel_%d.png",currentProfileIndex]];
size = CGSizeMake(1136, 640);
UIGraphicsBeginImageContext(size);
[image drawInRect:CGRectMake(0, 0, 1136, 640)];
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *data = UIImagePNGRepresentation(image);
[data writeToFile:path atomically:YES];
CCLOG(#"saved...");
CGRect r = CGRectMake(0, 0, 1136, 640);
UIGraphicsBeginImageContext(r.size);
UIImage *img1;
[image drawInRect:r];
img1 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(img1, nil, nil, nil);
currentProfileIndex++;
[[CCDirector sharedDirector] replaceScene:[LevelEditor Scene]
withTransition:[CCTransition transitionPushWithDirection:CCTransitionDirectionLeft duration:1.0f]];
}
-UPDATE----------------------------------------------------------------------------------
I just tried switching scenes in different places in the code, and I can switch scenes freely until the Function:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
I think that function might be the problem.
So far, I have tried to:
1.switch scenes before taking the picture, and that works fine
2.I read that it might be because i was resizing the image, but commenting that out made no difference.
3.I've also added breakpoints before the scene switch, and the scene isn't nil
4.Finally i tred dismissing the uip UIImagePickerController, but that made no difference either.
Sorry for the long post /: if anyone knows whats going on any help would be really great.
Ok so I found the problem to be this line:
[NSThread detachNewThreadSelector:#selector(writeImgToPath:) toTarget:self withObject:LevelImage];
}
Apparently some Parts of Uikit are not thread-friendly, so I'm now using just
[self writeImgToPath];
And it works, hope this helps anyone with the same problem.
I have a custom UIPickerView that is embedded into an UIActionsheet that comes up half the screen when called. Works great. The problem is that I want to have the barrelPicker be showing the 'most probable' results as the selection when it first comes up (after all the data has been loaded into it).
Prior to having the custom picker embedded in the action sheet, I had it in a UIViewController and was just calling "showProbableResults" (a custom method of mine) in the viewDidLoad method of the ViewController, because I knew at that point, the UIPickerView would be loaded up and ready to go. Is there an equivalent place for me to call this method now or do I need to rethink my whole design? Essentially, what I need is a place to call this after the UIPickerView has been loaded.
- (void)startWithDelegate:(UIViewController <ImageProcessingDelegate> *)sender
{
self.delegate = sender;
self.showFirstBottle = YES;
[self start];
}
- (void) start {
self.actionSheet = [[UIActionSheet alloc] initWithTitle:#"Choose Something"
delegate:self
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:nil];
[self.actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
CGRect pickerFrame = CGRectMake(0, 40, 0, 0);
NSLog(#"1.) About to alloc the picker");
self.vintagePicker = [[UIPickerView alloc] initWithFrame:pickerFrame];
self.vintagePicker.showsSelectionIndicator = YES;
self.vintagePicker.dataSource = self;
self.vintagePicker.delegate = self;
[self.actionSheet addSubview:self.vintagePicker];
[self.vintagePicker release];
UISegmentedControl *nextButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:#"Next"]];
nextButton.momentary = YES;
nextButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
nextButton.segmentedControlStyle = UISegmentedControlStyleBar;
nextButton.tintColor = [UIColor blackColor];
[nextButton addTarget:self action:#selector(show:) forControlEvents:UIControlEventValueChanged];
[self.actionSheet addSubview:nextButton];
[nextButton release];
UISegmentedControl *backButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:#"Back"]];
backButton.momentary = YES;
backButton.frame = CGRectMake(10, 7.0f, 50.0f, 30.0f);
backButton.segmentedControlStyle = UISegmentedControlStyleBar;
backButton.tintColor = [UIColor blackColor];
[backButton addTarget:self action:#selector(cancel:) forControlEvents:UIControlEventValueChanged];
[self.actionSheet addSubview:backButton];
[backButton release];
[self.actionSheet showInView:_delegate.parentViewController.tabBarController.view]; // show from our table view (pops up in the middle of the table)
[self.actionSheet setBounds:CGRectMake(0, 0, 320, 485)];
}
One option is to create a reusable picker view, as shown here, and then call the #optional
-(void)setInitialPickerValueToRow:(int)i inComponent:(int)j animated:(BOOL)k{
[pickerView selectRow:i inComponent:j animated:k];
}
from any view controller or NSObject (such as your UIActionSheetDelegate).
Your other option is to set a standard pre-chosen selection, as follows:
self.vintagePicker = [[UIPickerView alloc] initWithFrame:pickerFrame];
self.vintagePicker.showsSelectionIndicator = YES;
self.vintagePicker.dataSource = self;
self.vintagePicker.delegate = self;
[self.actionSheet addSubview:self.vintagePicker];
[self.vintagePicker selectRow:0 inComponent:0 animated:NO];
You could also have different variables that you set, and have selectRow:inComponent:animated: access those, instead of being preset.
[self.vintagePicker selectRow:myRow inComponent:0 animated:NO];
Hope this helps!
"Now Playing" is in One line in UIBarButtonItem. I have to put it in two lines, like "Now" is ay top and "Playing" is at bottom.I have written the following line of code:-
UIBarButtonItem *flipButton = [[UIBarButtonItem alloc]
initWithTitle:#"Now Playing"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(flipView)];
self.navigationItem.rightBarButtonItem = flipButton;
So i want to pu line break in between "Now Playing". So please help me out.
Yes you can. It is fairly simple to do. Create a multiline button and use that. The "trick" is to set the titleLabel numberOfLines property so that it likes multilines.
UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
button.titleLabel.numberOfLines = 0;
[button setTitle:NSLocalizedString(#"Now\nPlaying", nil) forState:UIControlStateNormal];
[button sizeToFit];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
When you specify a button type of custom it expects you to configure everything... selected state, etc. which is not shown here to keep the answer focused to the problem at hand.
- (void)createCustomRightBarButton_
{
UILabel * addCustomLabel = [[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 64, 25)] autorelease];
addCustomLabel.text =#"Now\nPlaying";
addCustomLabel.textColor = [UIColor whiteColor];
addCustomLabel.font = [UIFont boldSystemFontOfSize:11];
addCustomLabel.numberOfLines = 2;
addCustomLabel.backgroundColor = [UIColor clearColor];
addCustomLabel.textAlignment = UITextAlignmentCenter;
CGSize size = addCustomLabel.bounds.size;
UIGraphicsBeginImageContext(size);
CGContextRef context = UIGraphicsGetCurrentContext();
[addCustomLabel.layer renderInContext: context];
CGImageRef imageRef = CGBitmapContextCreateImage(context);
UIImage * img = [UIImage imageWithCGImage: imageRef];
CGImageRelease(imageRef);
CGContextRelease(context);
self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithImage:img
style:UIBarButtonItemStyleBordered
target:self
action:#selector(flipView)]
autorelease];
}
You can host a UIButton as customView inside your bar button (either set the bar button item customView or you can drag one directly on top of your UIBarButtonItem), hook it up as an outlet, then do;
-(void) viewDidLoad
{
//...
self.customButton.titleLabel.numberOfLines = 2;
self.customButton.suggestionsButton.titleLabel.lineBreakMode = UILineBreakModeWordWrap;
self.customButton.suggestionsButton.titleLabel.textAlignment = UITextAlignmentCenter;
}
which in my case becomes
I create 2 PNG images by myself, and it looks good.
UIImage *img = [UIImage imageNamed:#"nowplaying.png"];
UIBarButtonItem *nowPlayingButtonItem = [[[UIBarButtonItem alloc] initWithImage:img style:UIBarButtonItemStyleBordered target:delegate action:#selector(presentNowPlayingMovie)] autorelease];