效果 #import "ViewController.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UIImageView *panImageView;/** */@p ...
效果
#import "ViewController.h"@interface ViewController ()@property (weak, nonatomic) IBOutlet UIImageView *panImageView;/** */@property(nonatomic,assign)int angle;/** 转盘时间 */@property(strong,nonatomic)NSTimer *timer;/** 计时器 */@property(strong,nonatomic)NSTimer *timeTick;/** 计时时间 */@property(nonatomic,assign)int timeNumber;@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; self.timeNumber = 3; self.timer = [NSTimer scheduledTimerWithTimeInterval:0.01 target:self selector:@selector(startAnimation) userInfo:nil repeats:YES]; self.timeTick = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timeFireMethod) userInfo:nil repeats:YES]; }-(void)startAnimation{ [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1]; [UIView setAnimationDelegate:self]; _panImageView.animationRepeatCount = 1;// [UIView setAnimationDidStopSelector:@selector(startAnimation)]; self.angle += 1000; self.panImageView.layer.anchorPoint = CGPointMake(0.5,0.5);//以右下角为原点转,(0,0)是左上角转,(0.5,0,5)心中间转,其它以此类推 self.panImageView.transform = CGAffineTransformMakeRotation(self.angle * (M_PI / 180.0f)); [UIView commitAnimations]; }-(void)timeFireMethod{ self.timeNumber -- ; if (self.timeNumber == 0) { [self.timer invalidate]; }}@end
原标题:iOS 实现转盘的效果
关键词:IOS
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