IOS第18天(10,核心动画-转盘，自定义buton，旋转动画）

#import "HMViewController.h"#import "HMWheelView.h"@interface HMViewController ()@property (nonatomic, weak) HMWheelView *wheelView;@end@implementation HMViewController
- (IBAction)start:(id)sender {
[_wheelView startRotating];
}
- (IBAction)stop:(id)sender {
[_wheelView stopRotating];
}- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
HMWheelView *wheel = [HMWheelView wheelView]; wheel.center = self.view.center; [self.view addSubview:wheel]; _wheelView = wheel;}- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}@end

#import "HMWheelView.h"#import "HMWheelButton.h"#define angle2radian(x) ((x) / 180.0 * M_PI)@interface HMWheelView ()
@property (weak, nonatomic) IBOutlet UIImageView *rotationView;@property (nonatomic, weak) UIButton *selectedButton;@property (nonatomic, strong) CADisplayLink *link;@end@implementation HMWheelView+ (instancetype)wheelView
{
return [[NSBundle mainBundle] loadNibNamed:@"HMWheelView" owner:nil options:nil][];
}// 还有没连号线
- (id)initWithCoder:(NSCoder *)aDecoder
{
if (self = [super initWithCoder:aDecoder]) { NSLog(@"initWithCoder----%@",_rotationView); }
return self;
}// 连好线
#warning 添加按钮
- (void)awakeFromNib
{ _rotationView.userInteractionEnabled = YES; // 裁剪的大图片
UIImage *bigImage = [UIImage imageNamed:@"LuckyAstrology"];
UIImage *selectedImage = [UIImage imageNamed:@"LuckyAstrologyPressed"]; // 图片的尺寸
CGFloat imageW = * [UIScreen mainScreen].scale;
CGFloat imageH = * [UIScreen mainScreen].scale; for (int i = ; i < ; i++) {
// 创建按钮
HMWheelButton *button = [HMWheelButton buttonWithType:UIButtonTypeCustom]; // 锚点
button.layer.anchorPoint = CGPointMake(0.5, );
// 位置
button.layer.position = CGPointMake(self.bounds.size.width * 0.5, self.bounds.size.height * 0.5); // 旋转按钮
button.layer.transform = CATransform3DMakeRotation(angle2radian(i * ), , , ); // 尺寸
button.bounds = CGRectMake(, , , ); // 设置选中时候的背景图片
[button setBackgroundImage:[UIImage imageNamed:@"LuckyRototeSelected"] forState:UIControlStateSelected]; // 设置按钮的图片
// image:裁剪的图片
// rect:裁剪的尺寸
CGRect clipRect = CGRectMake(i * imageW, , imageW, imageH);
CGImageRef smallImage = CGImageCreateWithImageInRect(bigImage.CGImage, clipRect);
[button setImage:[UIImage imageWithCGImage:smallImage] forState:UIControlStateNormal]; // 设置选中的图片
CGImageRef selectedSmallImage = CGImageCreateWithImageInRect(selectedImage.CGImage, clipRect);
[button setImage:[UIImage imageWithCGImage:selectedSmallImage] forState:UIControlStateSelected]; // 监听点击事件
[button addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchDown]; if (i == ) {
[self btnClick:button];
} [_rotationView addSubview:button]; }
}#warning 监听按钮点击
- (void)btnClick:(UIButton *)button
{
_selectedButton.selected = NO;
button.selected = YES;
_selectedButton = button;
}#warning 开始旋转
- (void)startRotating
{
self.link.paused = NO;}- (void)stopRotating
{
_link.paused = YES;
}- (CADisplayLink *)link
{ if (_link == nil) {
CADisplayLink *link = [CADisplayLink displayLinkWithTarget:self selector:@selector(update)]; [link addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
_link = link;
}
return _link;
}
// 60 45 / 60.0
- (void)update
{
_rotationView.transform = CGAffineTransformRotate(_rotationView.transform, angle2radian( / 60.0));
}- (IBAction)start:(id)sender { // 1.不要和用户交互
_rotationView.userInteractionEnabled = NO; // 2.取消慢慢的旋转
[self stopRotating]; CABasicAnimation *anim = [CABasicAnimation animation]; anim.keyPath = @"transform.rotation"; anim.toValue = @(M_PI * * ); anim.duration = 0.5; anim.delegate = self; [_rotationView.layer addAnimation:anim forKey:nil];}- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag
{
_rotationView.userInteractionEnabled = YES; // 让选中按钮回到最在上面的中间位置:
CGFloat angle = atan2(_selectedButton.transform.b, _selectedButton.transform.a); NSLog(@"%f",angle); // 把我们的转盘反向旋转这么多°
_rotationView.transform = CGAffineTransformMakeRotation(-angle); dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)( * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self startRotating];
});
}@end

#import <UIKit/UIKit.h>@interface HMWheelView : UIView+ (instancetype)wheelView;// 开始旋转
- (void)startRotating;// 停止旋转
- (void)stopRotating;@end

#import "HMWheelButton.h"@implementation HMWheelButton
//转盘 按钮
- (CGRect)imageRectForContentRect:(CGRect)contentRect
{
CGFloat imageW = ;
CGFloat imageH = ;
CGFloat imageX = (contentRect.size.width - imageW) * 0.5;
CGFloat imageY = ; return CGRectMake(imageX, imageY, imageW, imageH);
}
//去除高亮
- (void)setHighlighted:(BOOL)highlighted
{}@end

#import <UIKit/UIKit.h>@interface HMWheelButton : UIButton@end