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

MelConnors 7年前
   <p>网上找了几个,但都有cup暴涨的情况发生,于是利用CABasicAnimation 简单的实现一个跑马灯,实现简单,可自己定制</p>    <p style="text-align:center"><img src="https://simg.open-open.com/show/53a26321df3c2bbcf4c90dfbbde633da.jpg"></p>    <p> </p>    <pre>  <code class="language-objectivec">#import <UIKit/UIKit.h>    @interface LoopView : UIView  @property(nonatomic,strong)NSString *Iformation;  @property(nonatomic,strong)NSString *Image;  @end</code></pre>    <pre>  <code class="language-objectivec">#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"];    }</code></pre>    <p> </p>    <p>来自:http://www.jianshu.com/p/0c8a64aa5161</p>    <p> </p>