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POhow do I stack the UIImage together and wavering or swing in UIKit
 

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  1. POhow do I stack the UIImage together and wavering or swing in UIKit
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    <p>I would like to know how this app stacks up uiimage and wavering in UIKit.</p> <p>I'm following this <a href="https://stackoverflow.com/questions/13589392/xcode-using-a-uiimageview-subclass-with-nstimers">xcode: Using a UIImageView subclass with NSTimers</a> to have images dropping down in random, but how do I catch it and stack the UIImage together ?</p> <p><img src="https://i.stack.imgur.com/p0pax.jpg" alt="enter image description here"></p> <p>Thanks for the reply... EDIT: for clarity</p> <p><a href="https://www.youtube.com/watch?v=2dpZCoi4xFk" rel="nofollow noreferrer">https://www.youtube.com/watch?v=2dpZCoi4xFk</a> 40sec onwards will show how it stack on top each other and swing with accerometer</p> <p>This will emulate the dropping of UIIimageView</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; // set the background color to something COLD self.view.backgroundColor = [UIColor colorWithRed:0.0 green:0.5 blue:1.0 alpha:1.0]; // load our ph image we will use the same image over and over phImage = [UIImage imageNamed:@"placeholder.png"]; // start a timet that will fire 1 times per second [NSTimer scheduledTimerWithTimeInterval:(1) target:self selector:@selector(onTimer) userInfo:nil repeats:YES]; } // Timer event is called whenever the timer fires - (void)onTimer { // build a view from our ph image UIImageView* placeholderView = [[UIImageView alloc] initWithImage:phImage]; // use the random() function to randomize up our ph attributes //int startX = round(random() % 300); int startX = round(random() % 275); //int endX = round(random() % 300); int endX = startX; double scale = 1 / round(random() % 100) + 1.0; double speed = 1 / round(random() % 50) + 1.0; // set the PH start position phView.frame = CGRectMake(startX, -100.0, 25.0 * scale, 25.0 * scale); phView.alpha = 0.25; // put the ph in our main view [self.view addSubview:phView]; [UIView beginAnimations:nil context:phView]; // set up how fast the ph will fall [UIView setAnimationDuration:5 * speed]; // set the postion where ph will move to phView.frame = CGRectMake(endX, 500.0, 25.0 * scale, 25.0 * scale); // set a stop callback so we can cleanup the ph when it reaches the // end of its animation [UIView setAnimationDidStopSelector:@selector(onAnimationComplete:finished:context:)]; [UIView setAnimationDelegate:self]; [UIView commitAnimations]; } - (void)onAnimationComplete:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context { UIImageView *phView = context; [phView removeFromSuperview]; NSLog(@"[phView retainCount] = %d",[phView retainCount]); } </code></pre> <p>Thanks for reading and commenting.</p>
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    1. COby stacked what exactly do you mean .. ? because these images just seem to be overlapping one another ..
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