iOS使用 CABasicAnimation 实现简单的跑马灯（无cpu暴涨）

#import <UIKit/UIKit.h>@interface LoopView : UIView@property(nonatomic,strong)NSString *Iformation;@property(nonatomic,strong)NSString *Image;@end

#import "LoopView.h"#import "UIImageView+WebCache.h"@interface LoopView(){  UILabel *AD;  UIImageView *headImage;  CABasicAnimation *animation;   CABasicAnimation *animationhead;}@end@implementation LoopView-(instancetype)initWithFrame:(CGRect)frame{  self = [super initWithFrame:frame];  if (self) {    AD = [[UILabel alloc]initWithFrame:CGRectMake(28*WPSCREEN_WIDTH_RATIO, 0, self.frame.size.width, self.frame.size.height)];    [self addSubview:AD];    AD.textColor = TJXColor(146, 152, 169);    AD.font = [UIFont fontWithName:@"Gotham-Book" size:12*WPSCREEN_WIDTH_RATIO];    AD.textAlignment = NSTextAlignmentLeft;    headImage = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 20*WPSCREEN_WIDTH_RATIO, 20*WPSCREEN_WIDTH_RATIO)];    [self addSubview:headImage];    headImage.layer.cornerRadius = 10;    headImage.layer.masksToBounds = YES;    [self sssss];    [self headimage];  }  return self;}-(void)setIformation:(NSString *)Iformation{    AD.text =Iformation;}-(void)setImage:(NSString *)Image{   [headImage sd_setImageWithURL:[NSURL URLWithString:Image]];}-(void)sssss{  animation = [CABasicAnimation animationWithKeyPath:@"position"];  // 动画选项的设定  animation.duration = 2; // 持续时间  animation.repeatCount = MAXFLOAT; // 重复次数  animation.removedOnCompletion = NO;  animation.autoreverses = NO;  // 起始帧和终了帧的设定  animation.fromValue = [NSValue valueWithCGPoint:CGPointMake(AD.layer.position.x, 30*WPSCREEN_HIGTH_RATIO)]; // 起始帧  animation.toValue = [NSValue valueWithCGPoint:CGPointMake(AD.layer.position.x, AD.layer.position.y-20*WPSCREEN_HIGTH_RATIO)]; // 终了帧  // 添加动画  [AD.layer addAnimation:animation forKey:@"AnimationMoveY"];//  [headImage.layer addAnimation:animation forKey:@"AnimationMoveY"];}-(void)headimage{  animationhead = [CABasicAnimation animationWithKeyPath:@"position"];  // 动画选项的设定  animationhead.duration = 2; // 持续时间  animationhead.repeatCount = MAXFLOAT; // 重复次数  animationhead.removedOnCompletion = NO;  animationhead.autoreverses = NO;  // 起始帧和终了帧的设定  animationhead.fromValue = [NSValue valueWithCGPoint:CGPointMake(headImage.layer.position.x, 30*WPSCREEN_HIGTH_RATIO)]; // 起始帧  animationhead.toValue = [NSValue valueWithCGPoint:CGPointMake(headImage.layer.position.x, headImage.layer.position.y-20*WPSCREEN_HIGTH_RATIO)]; // 终了帧  // 添加动画  [headImage.layer addAnimation:animationhead forKey:@"AnimationMoveY"];}