I'm trying to animate a custom property, and as I've seen on several sources it seems this would be the way to go, but I'm missing something. Here's the CALayer subclass:
#implementation HyNavigationLineLayer
#dynamic offset;
- (instancetype)initWithLayer:(id)layer
{
self = [super initWithLayer:layer];
if (self) {
HyNavigationLineLayer * other = (HyNavigationLineLayer*)layer;
self.offset = other.offset;
}
return self;
}
-(CABasicAnimation *)makeAnimationForKey:(NSString *)key
{
// TODO
return nil;
}
- (id<CAAction>)actionForKey:(NSString *)event
{
if ([event isEqualToString:#"offset"]) {
return [self makeAnimationForKey:event];
}
return [super actionForKey:event];
}
+ (BOOL)needsDisplayForKey:(NSString *)key
{
if ([key isEqualToString:#"offset"]) {
return YES;
}
return [super needsDisplayForKey:key];
}
- (void)drawInContext:(CGContextRef)ctx
{
NSLog(#"Never gets called");
}
#end
I believe this is the only relevant method on my view:
#implementation HyNavigationLineView
+ (Class)layerClass
{
return [HyNavigationLineLayer class];
}
#end
And, finally, in my view controller:
- (void)viewDidLoad
{
[super viewDidLoad];
// Instantiate the navigation line view
CGRect navLineFrame = CGRectMake(0.0f, 120.0f, self.view.frame.size.width, 15.0f);
self.navigationLineView = [[HyNavigationLineView alloc] initWithFrame:navLineFrame];
// Make it's background transparent
self.navigationLineView.backgroundColor = [UIColor colorWithWhite:0.0f alpha:0.0f];
self.navigationLineView.opaque = NO;
[[self.navigationLineView layer] addSublayer:[[HyNavigationLineLayer alloc] init]];
[self.view addSubview:self.navigationLineView];
}
The thing is that the drawInContext method is not called at all, although layerClass is. Am I missing something to make the layer draw?
Solved it. Need to call setNeedsDisplay
- (void)viewDidLoad
{
[super viewDidLoad];
// Instantiate the navigation line view
CGRect navLineFrame = CGRectMake(0.0f, 120.0f, self.view.frame.size.width, 15.0f);
self.navigationLineView = [[HyNavigationLineView alloc] initWithFrame:navLineFrame];
// Make it's background transparent
self.navigationLineView.backgroundColor = [UIColor colorWithWhite:0.0f alpha:0.0f];
self.navigationLineView.opaque = NO;
[[self.navigationLineView layer] addSublayer:[[HyNavigationLineLayer alloc] init]];
[self.view addSubview:self.navigationLineView];
[self.navigationLineView.layer setNeedsDisplay];
}
Related
Edit: Here's my AppDelegate as well (part of it)
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
GameViewController *gameViewController = [[GameViewController alloc]init];
NSLog(#"NSLOG %#", [[gameViewController view]class]);
_bannerViewController = [[BannerViewController alloc]initWithContentViewController:gameViewController];
self.window.rootViewController = _bannerViewController;
[self.window makeKeyAndVisible];
return YES;
}
I am about to give up. I have tried 5 different ways just these past few days to get literally one single iAd to show correctly and as simple as Apple makes it seem, literally 100% of the time I either see no ad or get an error. I have followed the Apple documentation EXACTLY.
The only clue I have is in these two lines
GameViewController *gameViewController = [[GameViewController alloc]init];
NSLog(#"NSLOG %#", [[gameViewController view]class]);
Which are in my app delegate. The NSLog gives me "UIView". No. Why? Why would that ever be a UIView, it should be an SKView, because GameViewController was pre-written for me by apple for sprite kit. How could that possibly give me the wrong object?
I am getting 'NSInvalidArgumentException', reason: '-[UIView scene]: unrecognized selector sent to instance 0x174191780' which others have recommended to fix by putting the originalContent statement but I already have that and it isn't working.
Banner view controller:
#import "BannerViewController.h"
NSString * const BannerViewActionWillBegin = #"BannerViewActionWillBegin";
NSString * const BannerViewActionDidFinish = #"BannerViewActionDidFinish";
#interface BannerViewController () <ADBannerViewDelegate>
#end
#implementation BannerViewController {
ADBannerView *_bannerView;
UIViewController *_contentController;
}
-(instancetype)initWithContentViewController:(UIViewController *)contentController{
NSAssert(contentController != nil, #"Attempting to initialize a BannerViewController with a nil contentController.");
self = [super init];
if (self != nil) {
_bannerView = [[ADBannerView alloc] initWithAdType:ADAdTypeBanner];
_contentController = contentController;
_bannerView.delegate = self;
}
return self;
}
-(void)loadView{
UIView *contentView = [[UIView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
//Have also tried SKView *contentView = [[SKView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
[contentView addSubview:_bannerView];
[self addChildViewController:_contentController];
[contentView addSubview:_contentController.view];
[_contentController didMoveToParentViewController:self];
self.view = contentView;
}
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
return [_contentController preferredInterfaceOrientationForPresentation];
}
-(NSUInteger)supportedInterfaceOrientations{
return [_contentController supportedInterfaceOrientations];
}
-(void)viewDidLayoutSubviews{
CGRect contentFrame = self.view.bounds, bannerFrame = CGRectZero;
bannerFrame.size = [_bannerView sizeThatFits:contentFrame.size];
if(_bannerView.bannerLoaded){
contentFrame.size.height -= bannerFrame.size.height;
bannerFrame.origin.y = contentFrame.size.height;
}else{
bannerFrame.origin.y = contentFrame.size.height;
}
_contentController.view.frame = contentFrame;
_bannerView.frame = bannerFrame;
}
-(void)bannerViewDidLoadAd:(ADBannerView *)banner{
[UIView animateWithDuration:0.25 animations:^{
[self.view setNeedsLayout];
[self.view layoutIfNeeded];
}];
}
-(void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error{
[UIView animateWithDuration:0.25 animations:^{
[self.view setNeedsLayout];
[self.view layoutIfNeeded];
}];
}
-(BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave{
[[NSNotificationCenter defaultCenter]postNotificationName:BannerViewActionWillBegin object:self];
return YES;
}
-(void)bannerViewActionDidFinish:(ADBannerView *)banner{
[[NSNotificationCenter defaultCenter]postNotificationName:BannerViewActionDidFinish object:self];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
Game View controller:
#interface GameViewController ()
#property (nonatomic, strong) IBOutlet UIView *contentView;
#end
#implementation GameViewController {
}
-(instancetype)init{
self = [super init];
if (self) {
}
return self;
}
-(void)viewDidLoad{
//self.canDisplayBannerAds = YES;
[super viewDidLoad];
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
}
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
}
-(void)viewDidLayoutSubviews{
}
-(void)viewWillLayoutSubviews{
[super viewWillLayoutSubviews];
SKView *skView = (SKView*)self.originalContentView;
if (!skView.scene) {
SKScene *scene = [GameScene sceneWithSize:skView.bounds.size];
[skView presentScene:scene];
//skView.showsPhysics = YES;
}
}
- (BOOL)shouldAutorotate
{
return NO;
}
- (NSUInteger)supportedInterfaceOrientations
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return UIInterfaceOrientationMaskPortrait;
} else {
return UIInterfaceOrientationMaskAll;
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (BOOL)prefersStatusBarHidden {
return YES;
}
I figured it out. The answer, as I thought it would be, was incredibly simple and quite mind-boggling that Apple wouldn't put some sort of warning in their documentation, but then again maybe I am just too much of a noob and we are expected to know these kinds of things.
The answer, is that init was never being called in GameViewController, instead, initWithCoder: was being called. Once I NSLogged the init method and saw it wasn't being called, I figured this out.
I am creating progress view by using CALayer by following
Header class
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
#interface ProgressBar : UIView
#property (strong, nonatomic) CALayer *subLayer;
#property (nonatomic) CGFloat progress;
#end
Implementation class
#implementation ProgressBar
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.progress = 0;
self.backgroundColor = [UIColor whiteColor];
self.subLayer = [CALayer layer];
self.subLayer.frame = self.bounds;
self.subLayer.backgroundColor = [UIColor orangeColor].CGColor;
[self.layer addSublayer:self.subLayer];
}
return self;
}
- (void)setProgress:(CGFloat)value {
NSLog(#"what is going on here");
if (self.progress != value) {
self.progress = value;
[self setNeedsLayout];
}
}
- (void)layoutSubviews {
CGRect rect = [self.subLayer frame];
rect.size.width = CGRectGetWidth([self bounds]) * self.progress;
[self.subLayer setFrame:rect];
}
In my viewcontroller, I am doing
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.pBar = [[ProgressBar alloc] initWithFrame:CGRectMake(0, 50, 320, 10)];
[self.view addSubview:self.pBar];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)click:(id)sender {
[self.pBar setProgress:.8];
}
When (IBAction)click is fired, I am getting into the infinitive loop like the picture below
Does anyone know what I am getting into this loop. Please advice me on this issue. Thanks
The problem is that your setProgress: method calls the setProgress: method - recursion.
- (void)setProgress:(CGFloat)value {
NSLog(#"what is going on here");
if (self.progress != value) {
self.progress = value; // <-- This calls [self setProgress:value]
[self setNeedsLayout];
}
}
Change the bad line to:
_progress = value;
Setting the ivar directly is always required when you implement the setter method of a property.
My inspiration for this project is the Droplr and CloudApp mac menubar applications. I have been attempting to implement the code explained here.
However, when I implement the code, the menubar images disappear. Here is my code to create the status item:
- (id)init {
self = [super init];
if (self != nil) {
// Install status item into the menu bar
NSStatusItem *statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:STATUS_ITEM_VIEW_WIDTH];
_statusItemView = [[StatusItemView alloc] initWithStatusItem:statusItem];
_statusItemView.image = [NSImage imageNamed:#"Status"];
_statusItemView.alternateImage = [NSImage imageNamed:#"StatusHighlighted"];
_statusItemView.action = #selector(togglePanel:);
StatusItemView* dragView = [[StatusItemView alloc] initWithFrame:NSMakeRect(0, 0, 24, 24)];
[statusItem setView:dragView];
[dragView release];
}
return self;
}
This is my view file:
#import "StatusItemView.h"
#implementation StatusItemView
#synthesize statusItem = _statusItem;
#synthesize image = _image;
#synthesize alternateImage = _alternateImage;
#synthesize isHighlighted = _isHighlighted;
#synthesize action = _action;
#synthesize target = _target;
#pragma mark -
- (id)initWithStatusItem:(NSStatusItem *)statusItem {
CGFloat itemWidth = [statusItem length];
CGFloat itemHeight = [[NSStatusBar systemStatusBar] thickness];
NSRect itemRect = NSMakeRect(0.0, 0.0, itemWidth, itemHeight);
self = [super initWithFrame:itemRect];
if (self != nil) {
_statusItem = statusItem;
_statusItem.view = self;
}
return self;
}
#pragma mark -
- (id)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
//register for drags
[self registerForDraggedTypes:[NSArray arrayWithObjects: NSFilenamesPboardType, nil]];
}
return self;
}
//we want to copy the files
- (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender {
return NSDragOperationCopy;
}
perform the drag and log the files that are dropped
- (BOOL)performDragOperation:(id <NSDraggingInfo>)sender {
NSPasteboard *pboard;
NSDragOperation sourceDragMask;
sourceDragMask = [sender draggingSourceOperationMask];
pboard = [sender draggingPasteboard];
if( [[pboard types] containsObject:NSFilenamesPboardType] ) {
NSArray *files = [pboard propertyListForType:NSFilenamesPboardType];
NSLog(#"Files: %#",files);
}
return YES;
}
#pragma mark -
- (void)drawRect:(NSRect)dirtyRect {
[self.statusItem drawStatusBarBackgroundInRect:dirtyRect withHighlight:self.isHighlighted];
NSImage *icon = self.isHighlighted ? self.alternateImage : self.image;
NSSize iconSize = [icon size];
NSRect bounds = self.bounds;
CGFloat iconX = roundf((NSWidth(bounds) - iconSize.width) / 2);
CGFloat iconY = roundf((NSHeight(bounds) - iconSize.height) / 2);
NSPoint iconPoint = NSMakePoint(iconX, iconY);
[icon compositeToPoint:iconPoint operation:NSCompositeSourceOver];
}
#pragma mark -
#pragma mark Mouse tracking
- (void)mouseDown:(NSEvent *)theEvent {
[NSApp sendAction:self.action to:self.target from:self];
}
#pragma mark -
#pragma mark Accessors
- (void)setHighlighted:(BOOL)newFlag {
if (_isHighlighted == newFlag) return;
_isHighlighted = newFlag;
[self setNeedsDisplay:YES];
}
#pragma mark -
- (void)setImage:(NSImage *)newImage {
if (_image != newImage) {
_image = newImage;
[self setNeedsDisplay:YES];
}
}
- (void)setAlternateImage:(NSImage *)newImage {
if (_alternateImage != newImage) {
_alternateImage = newImage;
if (self.isHighlighted) {
[self setNeedsDisplay:YES];
}
}
}
#pragma mark -
- (NSRect)globalRect {
NSRect frame = [self frame];
frame.origin = [self.window convertBaseToScreen:frame.origin];
return frame;
}
#end
Thanks everyone!
I know this is an old question but perhaps this might help:
Try setting the NSStatusItem *statusItem as a #propery of the class. If you have ARC, the menubar might be getting destroyed right after the init function finishes.
I have a subclass of UITextField and want to be able to add it to the view in IB. What I did is added UITextField and changed its class to my subclass in Identity tab of Inspector. But I can only see UITextField on the view.
Code:
#interface ExtendedTextField : UITextField {
}
//implementation
#implementation ExtendedTextField
- (void)baseInit
{
UIImage * curImage = [UIImage imageNamed:#"tfbg.png"];
[self baseInitWithImage : curImage];
}
- (void)baseInitWithImage : (UIImage *) aImage
{
aImage = [aImage stretchableImageWithLeftCapWidth:29 topCapHeight:29];
self.background = aImage;
self.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
UIView * curLeftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 10, self.frame.size.height)];
self.leftView = curLeftView;
self.rightView = curLeftView;
[curLeftView release];
self.leftViewMode = UITextFieldViewModeAlways;
self.rightViewMode = UITextFieldViewModeAlways;
[self setTextColor:[UIColor greenColor]];
}
- (void)awakeFromNib
{
[super awakeFromNib];
[self baseInit];
}
/*
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self) {
[self baseInit];
}
return self;
}
*/
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self)
{
[self baseInit];
}
return self;
}
- (id)initWithFrame:(CGRect)frame withImage:(UIImage*)aImage
{
self = [super initWithFrame:frame];
if (self) {
[self baseInitWithImage : aImage];
}
return self;
}
- (void)dealloc {
[super dealloc];
}
#end
EDIT: I noticed several things:
-- if I put [super initWithFrame:...] instead of [super initWithCoder:...] inside
(id)initWithCoder:(NSCoder *)aDecoder
it works well.
-- Now I am using awakefromnib instead of initwithcoder and the only thing that get changed in textfield is textColor.
Could someone explain why so?
Solution I needed to set border style to none. BS overlayed bg image.
While showing your .xib in Xcode, reveal the right pane, select your view and in the third tab, change Classto whatever you want it to be.
Issue
Description
The following code results in load method of TTModel not being called. I've stepped it through the debugger, as well as stepping through the TTCatalog application. The only difference between the two that I can see, is that when the catalog sets it's DataSource in the createModel method of the controller, TTModel's load method gets called, whereas mine does not.
About the Code
I've commented the specific areas of code, to tell what they should be doing and what problem is happening, but I included all of it for completion's sake.
You should look at specifically
PositionsController's createModel method
PositionsList's load method
Those are the areas where the issue is, and would be the best place to start.
Code
PositionsController : TTTableViewController
- (id)initWIthNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
self.title = #"Positions";
self.variableHeightRows = NO;
self.navigationBarTintColor = [UIColor colorWithHexString:#"1F455E"];
}
return self;
}
//This method here should result in a call to the PositionsList load method
- (void)createModel
{
PositionsDataSource *ds = [[PositionsDataSource alloc] init];
self.dataSource = ds;
[ds release];
}
- (void)loadView
{
[super loadView];
self.view = [[[UIView alloc] initWithFrame:TTApplicationFrame()] autorelease];
self.tableView = [[[UITableView alloc] initWithFrame:TTApplicationFrame() style:UITableViewStylePlain] autorelease];
self.tableView.backgroundColor = [UIColor colorWithHexString:#"E2E7ED"];
self.tableView.separatorColor = [UIColor whiteColor];
self.tableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
//self.tableView.delegate = self;
[self.view addSubview:self.tableView];
}
//Override UITableViewDelegate creation method, so we can add drag to refresh
- (id<TTTableViewDelegate>) createDelegate {
TTTableViewDragRefreshDelegate *delegate = [[TTTableViewDragRefreshDelegate alloc] initWithController:self];
return [delegate autorelease];
}
PositionsDataSource : TTListDataSource
#implementation PositionsDataSource
#synthesize positionsList = _positionsList;
-(id)init
{
if (self = [super init])
{
_positionsList = [[PositionsList alloc] init];
self.model = _positionsList;
}
return self;
}
-(void)dealloc
{
TT_RELEASE_SAFELY(_positionsList);
[super dealloc];
}
-(void)tableViewDidLoadModel:(UITableView*)tableView
{
self.items = [NSMutableArray array];
}
-(id<TTModel>)model
{
return _positionsList;
}
#end
PositionsList : NSObject <TTModel>
#implementation PositionsList
//============================================================
//NSObject
- (id)init
{
if (self = [super init])
{
_delegates = nil;
loaded = NO;
client = [[Client alloc] init];
}
return self;
}
- (void)dealloc
{
TT_RELEASE_SAFELY(_delegates);
[client dealloc];
[super dealloc];
}
//==============================================================
//TTModel
- (NSMutableArray*)delegates
{
if (!_delegates)
{
_delegates = TTCreateNonRetainingArray();
}
return _delegates;
}
-(BOOL)isLoadingMore
{
return NO;
}
-(BOOL)isOutdated
{
return NO;
}
-(BOOL)isLoaded
{
return loaded;
}
-(BOOL)isEmpty
{
//return !_positions.count;
return NO;
}
-(BOOL)isLoading
{
return YES;
}
-(void)cancel
{
}
//This method is never called, why is that?
-(void)load:(TTURLRequestCachePolicy)cachePolicy more:(BOOL)more
{
//This method is not getting called
//When the PositionsController calls self.datasource, load should be called,
//however it isn't.
[_delegates perform:#selector(modelDidStartLoad:) withObject:self];
[client writeToServer:self dataToSend:#""];
}
-(void)invalidate:(BOOL)erase
{
}
#end
Short answer: return NO instead of YES for isLoading in your PositionList.
For a longer explanation:
If you dig through the Three20 source, you'll find that setting the dataSource on a view controller sets the model, refreshing the model and potentially calling load. Here is the code called when the TTModelViewController refreshes:
- (void)refresh {
_flags.isViewInvalid = YES;
_flags.isModelDidRefreshInvalid = YES;
BOOL loading = self.model.isLoading;
BOOL loaded = self.model.isLoaded;
if (!loading && !loaded && [self shouldLoad]) {
[self.model load:TTURLRequestCachePolicyDefault more:NO];
} else if (!loading && loaded && [self shouldReload]) {
[self.model load:TTURLRequestCachePolicyNetwork more:NO];
} else if (!loading && [self shouldLoadMore]) {
[self.model load:TTURLRequestCachePolicyDefault more:YES];
} else {
_flags.isModelDidLoadInvalid = YES;
if (_isViewAppearing) {
[self updateView];
}
}
}
Your PositionList object is returning YES for isLoading and NO for isLoaded. This means that Three20 thinks your model is loading when it isn't. You may also need to implement shouldLoad if it doesn't return YES by default.