BasicBanner/BasicBanner/TextViewController.m

/*
     File: TextViewController.m
 Abstract: A simple view controller that manages a content view and an ADBannerView.
  Version: 1.2
 
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#import "TextViewController.h"
 
@interface TextViewController ()
 
@property (nonatomic, strong) IBOutlet UIView *contentView;
 
// contentView's vertical bottom constraint, used to alter the contentView's vertical size when ads arrive
@property (nonatomic, strong) IBOutlet NSLayoutConstraint *bottomConstraint;
 
@property (nonatomic, strong) IBOutlet UITextView *textView;
@property (nonatomic, strong) IBOutlet UILabel *timerLabel;
 
@end
 
 
#pragma mark -
 
@implementation TextViewController
{
    ADBannerView *_bannerView;
    NSTimer *_timer;
    CFTimeInterval _ticks;
}
 
- (void)layoutAnimated:(BOOL)animated
{
    CGRect contentFrame = self.view.bounds;
 
    // all we need to do is ask the banner for a size that fits into the layout area we are using
    CGSize sizeForBanner = [_bannerView sizeThatFits:contentFrame.size];
    
    // compute the ad banner frame
    CGRect bannerFrame = _bannerView.frame;
    if (_bannerView.bannerLoaded) {
        
        // bring the ad into view
        contentFrame.size.height -= sizeForBanner.height;   // shrink down content frame to fit the banner below it
        bannerFrame.origin.y = contentFrame.size.height;
        bannerFrame.size.height = sizeForBanner.height;
        bannerFrame.size.width = sizeForBanner.width;
        
        // if the ad is available and loaded, shrink down the content frame to fit the banner below it,
        // we do this by modifying the vertical bottom constraint constant to equal the banner's height
        //
        NSLayoutConstraint *verticalBottomConstraint = self.bottomConstraint;
        verticalBottomConstraint.constant = sizeForBanner.height;
        [self.view layoutSubviews];
        
    } else {
        // hide the banner off screen further off the bottom
        bannerFrame.origin.y = contentFrame.size.height;
    }
 
    [UIView animateWithDuration:animated ? 0.25 : 0.0 animations:^{
        _contentView.frame = contentFrame;
        [_contentView layoutIfNeeded];
        _bannerView.frame = bannerFrame;
    }];
}
 
- (void)setText:(NSString *)text
{
    _text = [text copy];
    self.textView.text = text;
}
 
- (void)startTimer
{
    if (_timer == nil) {
        _timer = [NSTimer scheduledTimerWithTimeInterval:0.1
                                                  target:self
                                                selector:@selector(timerTick:)
                                                userInfo:nil
                                                 repeats:YES];
    }
}
 
- (void)stopTimer
{
    [_timer invalidate];
    _timer = nil;
}
 
- (void)timerTick:(NSTimer *)timer
{
    // Timers are not guaranteed to tick at the nominal rate specified, so this isn't technically accurate.
    // However, this is just an example to demonstrate how to stop some ongoing activity, so we can live with that inaccuracy.
    _ticks += 0.1;
    double seconds = fmod(_ticks, 60.0);
    double minutes = fmod(trunc(_ticks / 60.0), 60.0);
    double hours = trunc(_ticks / 3600.0);
    self.timerLabel.text = [NSString stringWithFormat:@"%02.0f:%02.0f:%04.1f", hours, minutes, seconds];
}
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // On iOS 6 ADBannerView introduces a new initializer, use it when available.
    if ([ADBannerView instancesRespondToSelector:@selector(initWithAdType:)]) {
        _bannerView = [[ADBannerView alloc] initWithAdType:ADAdTypeBanner];
    } else {
        _bannerView = [[ADBannerView alloc] init];
    }
    _bannerView.delegate = self;
    [self.view addSubview:_bannerView];
    
    NSDictionary *ipsums =
        [NSDictionary dictionaryWithContentsOfURL:[[NSBundle mainBundle] URLForResource:@"ipsums" withExtension:@"plist"]];
    self.text = ipsums[@"Original"];
    self.textView.text = self.text;
}
 
- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];
    [self layoutAnimated:NO];
    [self startTimer];
}
 
- (void)viewDidDisappear:(BOOL)animated
{
    [super viewDidDisappear:animated];
    [self stopTimer];
}
 
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return YES;
}
#endif
 
- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAll;
}
 
- (void)viewDidLayoutSubviews
{
    [self layoutAnimated:[UIView areAnimationsEnabled]];
}
 
- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
    [self layoutAnimated:YES];
}
 
- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
    NSLog(@"didFailToReceiveAdWithError %@", error);
    [self layoutAnimated:YES];
}
 
- (BOOL)bannerViewActionShouldBegin:(ADBannerView *)banner willLeaveApplication:(BOOL)willLeave
{
    [self stopTimer];
    return YES;
}
 
- (void)bannerViewActionDidFinish:(ADBannerView *)banner
{
    [self startTimer];
}
 
@end