自動で扉が閉まる的なiPhoneアプリのサンプルコードを描いてみます。
#import “ViewController.h”
@interface ViewController ()
@property (nonatomic, weak) UISwitch *autoSwitch;
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
UILabel *l = [[UILabel alloc] init];
l.text = @”auto close”;
[l sizeToFit];
l.center = CGPointMake(self.view.center.x, self.view.center.y – 40);
[self.view addSubview:l];
UISwitch *sw = [[UISwitch alloc] init];
sw.center = self.view.center;
sw.on = YES;
[self.view addSubview:sw];
[sw addTarget:self action:@selector(changeSW:) forControlEvents:UIControlEventValueChanged];
self.autoSwitch = sw;
for (int i=0; i<8; i++) {
float x = 120 * cos(M_PI_4 * i) + self.view.center.x – 30;
float y = 160 * sin(M_PI_4 * i) + self.view.center.y;
UIView *door = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 60, 60)];
door.tag = 1;
door.layer.cornerRadius = 30;
door.backgroundColor = [UIColor brownColor];
door.center = CGPointMake(x, y);
door.layer.anchorPoint = CGPointMake(0.05, 0.5);
[self.view addSubview:door];
UILabel *hole = [[UILabel alloc] initWithFrame:door.frame];
hole.text = [@(i+1) stringValue];
hole.textColor = [UIColor whiteColor];
hole.font = [UIFont fontWithName:@”chalkduster” size:30];
hole.textAlignment = NSTextAlignmentCenter;
hole.layer.masksToBounds = YES;
hole.backgroundColor = [UIColor blackColor];
hole.layer.cornerRadius = 30;
[self.view insertSubview:hole belowSubview:door];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(openDoor:)];
[door addGestureRecognizer:tap];
}
}
– (void)openDoor:(UITapGestureRecognizer *)gr
{
[UIView animateWithDuration:0.5 animations:^{
gr.view.transform = CGAffineTransformMakeRotation(M_PI*1.3);
}];
if (self.autoSwitch.isOn) {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[UIView animateWithDuration:0.5 animations:^{
gr.view.transform = CGAffineTransformIdentity;
}];
});
}
}
– (void)changeSW:(UISwitch *)sender
{
if (sender.isOn) {
NSPredicate *pred = [NSPredicate predicateWithFormat:@”tag=1″];
[[self.view.subviews filteredArrayUsingPredicate:pred] enumerateObjectsUsingBlock:^(UIView *obj, NSUInteger idx, BOOL *stop) {
if (!CGAffineTransformIsIdentity(obj.transform)) {
[UIView animateWithDuration:0.5 animations:^{
obj.transform = CGAffineTransformIdentity;
}];
}
}];
}
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end