iOS之iPhone解锁界面的"滑动来解锁"闪烁动画效果，好奇的赶紧进来取走，别看了，说的就是你0.0

Posted 2020-07-29 Deft_MKJing宓珂璟

各位亲爱的朋友们，你们每天解锁iPhone，看到底部“滑动来解锁”这个效果，难道不好奇么？？？那么好学的博主，今天在github上看到个库，facebook搞的，非常简单的API就能完成你们看到的效果，这么酷炫掉渣天的效果，写出来拿给别人装装B那是再好不过了不BB了，先给你们facebook的库  传送门：点击打开链接

排排坐哈，看电影啦

 

老规矩，看图说话：

我去，这配图，我自己都觉得好看，我给满分，觉得好看的各位希望能给我顶一下

开始介绍

博主也是第一次尝试写这个东西，先来个Label玩玩

首先，导入库

platform:ios,'7.0'

target'FaceBookShimmer' do

pod'Shimmer'

end

然后就开始撸代码

先展示上图中的三个Label  代码从上直下也是这个顺序

self.imageView = [[UIImageView alloc] init];
    self.imageView.frame = self.view.bounds;
    self.imageView.image = [UIImage imageNamed:@"Greg-Rakozy-1400x725.jpg"];
    self.imageView.contentMode = UIViewContentModeScaleAspectFill;
    [self.view addSubview:self.imageView];
    
//    UIVisualEffectView *effectView = [[UIVisualEffectView alloc] initWithEffect:[UIBlurEffect effectWithStyle:UIBlurEffectStyleDark]];
//    effectView.frame = self.view.bounds;
//    [self.imageView addSubview:effectView];
    
    self.shimmeringView = [[FBShimmeringView alloc] initWithFrame:CGRectMake(0, 300, 375, 120)];
    self.shimmeringView.shimmering = YES;
    self.shimmeringView.shimmeringOpacity = 0.2;
    self.shimmeringView.shimmeringBeginFadeDuration = 0.5;
    self.shimmeringView.shimmeringSpeed = 200;
    self.shimmeringView.shimmeringAnimationOpacity = 1.0;
    [self.view addSubview:self.shimmeringView];
    
    self.shimmerLabel = [[UILabel alloc] initWithFrame:self.shimmeringView.bounds];
    self.shimmerLabel.text = @"JUST LIKE A DOG";
    self.shimmerLabel.textColor = [UIColor whiteColor];
    self.shimmerLabel.textAlignment = NSTextAlignmentCenter;
    self.shimmerLabel.font = [UIFont fontWithName:@"HelveticaNeue-UltraLight" size:40.0];
    self.shimmerLabel.backgroundColor = [UIColor clearColor];
    self.shimmeringView.contentView = self.shimmerLabel;
    
    
    self.shimmeringView2 = [[FBShimmeringView alloc] initWithFrame:CGRectMake(0, 100, 375, 120)];
    self.shimmeringView2.shimmering = YES;
    self.shimmeringView2.shimmeringOpacity = 0;
    self.shimmeringView2.shimmeringBeginFadeDuration = 0.3;
    self.shimmeringView2.shimmeringEndFadeDuration = 2;
    self.shimmeringView2.shimmeringAnimationOpacity = 0.6;
    [self.view addSubview:self.shimmeringView2];
    
    self.shimmerLabel2 = [[UILabel alloc] initWithFrame:self.shimmeringView2.bounds];
    self.shimmerLabel2.text = @"落霞与孤鹜齐飞";
    self.shimmerLabel2.textColor = [UIColor redColor];
    self.shimmerLabel2.textAlignment = NSTextAlignmentCenter;
    self.shimmerLabel2.font = [UIFont boldSystemFontOfSize:40];
    self.shimmerLabel2.backgroundColor = [UIColor clearColor];
    self.shimmeringView2.contentView = self.shimmerLabel2;
    
    

    self.shimmeringView3 = [[FBShimmeringView alloc] initWithFrame:CGRectMake(0, 200, 375, 120)];
    self.shimmeringView3.shimmering = YES;
    self.shimmeringView3.shimmeringOpacity = 0;
    self.shimmeringView3.shimmeringDirection = FBShimmerDirectionLeft;
    self.shimmeringView3.shimmeringBeginFadeDuration = 0.3;
    self.shimmeringView3.shimmeringSpeed = 150;
    [self.view addSubview:self.shimmeringView3];
    
    self.shimmerLabel3 = [[UILabel alloc] initWithFrame:self.shimmeringView2.bounds];
    self.shimmerLabel3.text = @"秋水共长天一色";
    self.shimmerLabel3.textColor = [UIColor colorWithRed:255/255.0 green:194/255.0 blue:1/255.0 alpha:1];
    self.shimmerLabel3.textAlignment = NSTextAlignmentCenter;
    self.shimmerLabel3.font = [UIFont boldSystemFontOfSize:40];
    self.shimmerLabel3.backgroundColor = [UIColor clearColor];
    self.shimmeringView3.contentView = self.shimmerLabel3;

给大家加了所有字段的中文解释，自己测试出来的，有错误的请告知我

//! @abstract Set this to YES to start shimming and NO to stop. Defaults to NO.
    // 是否闪烁
    //@property (nonatomic, assign, readwrite, getter = isShimmering) BOOL shimmering;
    
    //! @abstract The time interval between shimmerings in seconds. Defaults to 0.4.
    // 两次闪烁之间的间隔
    //@property (assign, nonatomic, readwrite) CFTimeInterval shimmeringPauseDuration;
    
    //! @abstract The opacity of the content while it is shimmering. Defaults to 1.0.
    // 闪烁时动画的透明度 1.0就是原始亮度   0-1之间随意选择
    //@property (assign, nonatomic, readwrite) CGFloat shimmeringAnimationOpacity;
    
    //! @abstract The opacity of the content before it is shimmering. Defaults to 0.5.
    // 闪烁前的透明度，例如默认0.5，那么和上面那个参数对比下，就是0.5-1之间闪烁
    //@property (assign, nonatomic, readwrite) CGFloat shimmeringOpacity;
    
    //! @abstract The speed of shimmering, in points per second. Defaults to 230.
    // 闪烁的速度
    //@property (assign, nonatomic, readwrite) CGFloat shimmeringSpeed;
    
    //! @abstract The highlight length of shimmering. Range of [0,1], defaults to 0.33.
    // 闪烁过去的时候那条线的宽度 0 - 1之间的浮点数切换
    //@property (assign, nonatomic, readwrite) CGFloat shimmeringHighlightLength;
    
    //! @abstract @deprecated Same as "shimmeringHighlightLength", just for downward compatibility
    // 和上面类似
    //@property (assign, nonatomic, readwrite, getter = shimmeringHighlightLength, setter = setShimmeringHighlightLength:) CGFloat shimmeringHighlightWidth;
    
    //! @abstract The direction of shimmering animation. Defaults to FBShimmerDirectionRight.
    // 闪烁的方向，这个枚举有上下左右四个方向
    //@property (assign, nonatomic, readwrite) FBShimmerDirection shimmeringDirection;
    
    //! @abstract The duration of the fade used when shimmer begins. Defaults to 0.1.
    // 开始闪烁的时间间隔
    //@property (assign, nonatomic, readwrite) CFTimeInterval shimmeringBeginFadeDuration;
    
    //! @abstract The duration of the fade used when shimmer ends. Defaults to 0.3.
    // 结束闪烁的时间间隔
    //@property (assign, nonatomic, readwrite) CFTimeInterval shimmeringEndFadeDuration;
    
    /**
     @abstract The absolute CoreAnimation media time when the shimmer will fade in.
     @discussion Only valid after setting {@ref shimmering} to NO.
     */
    // 闪烁到shimmeringAnimationOpacity的时候fade需要多久
    //@property (assign, nonatomic, readonly) CFTimeInterval shimmeringFadeTime;

各自属性的默认值是这样的，需要的请自行修改即可

- (instancetype)init
{
  self = [super init];
  if (nil != self) {
    // default configuration
    _shimmeringPauseDuration = 0.4;
    _shimmeringSpeed = 230.0;
    _shimmeringHighlightLength = 1.0;
    _shimmeringAnimationOpacity = 0.5;
    _shimmeringOpacity = 1.0;
    _shimmeringDirection = FBShimmerDirectionRight;
    _shimmeringBeginFadeDuration = 0.1;
    _shimmeringEndFadeDuration = 0.3;
  }
  return self;
}

就这么简单，设置自己喜欢的属性就好了，跑起来看看,效果已经给大家配好了，也可以自行尝试，肯定很酷炫

看到这里，大家有没有发现可以在项目中用到哪里呢？我是觉得可以用到这里，给头像加

一层闪烁，把_shimmingPauseDuration的默认值改为20秒或者各位随意

有想法就试试呗，代码如下

// 给图片加一个shimming
    // 初始化
    self.shimmeringView4 = [[FBShimmeringView alloc] initWithFrame:CGRectMake(140, 400, 80, 80)];
    // 是否闪烁
    self.shimmeringView4.shimmering = YES;
    // 闪烁之前的透明度
    self.shimmeringView4.shimmeringOpacity = 1;
    // 从哪个方向闪烁
    self.shimmeringView4.shimmeringDirection = FBShimmerDirectionLeft;
    // 开始闪烁的时间
    self.shimmeringView4.shimmeringBeginFadeDuration = 0.3;
    // 一次周期的时间间隔
    self.shimmeringView4.shimmeringPauseDuration = 3;
    // 0-1之间，闪烁的线条间隔  由于给图片加，那么就要粗一点，好看点
    self.shimmeringView4.shimmeringHighlightWidth = 0.9;
    // 闪烁速度
    self.shimmeringView4.shimmeringSpeed = 150;
    self.shimmeringView4.layer.cornerRadius = 40;
    self.shimmeringView4.clipsToBounds = YES;
    self.shimmeringView4.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:self.shimmeringView4];
    
    self.headImageView = [[UIImageView alloc] initWithFrame:self.shimmeringView4.bounds];
    self.headImageView.image = [UIImage imageNamed:@"photo-1433878455169-4698e60005b1-1400x933.jpeg"];
    self.headImageView.contentMode = UIViewContentModeScaleToFill;
    self.headImageView.layer.cornerRadius = 40;
    self.headImageView.clipsToBounds = YES;
    // 用imageView加载到shimmering里面
    self.shimmeringView4.contentView = self.headImageView;

注意：

self.shimmeringView4.backgroundColor = [UIColorwhiteColor];

改方法默认是灰色的，这个闪烁的浮层就是灰色的，颜色可以自己更改成喜欢的颜色，一般白色就很酷炫了

self.shimmeringView4.shimmeringHighlightWidth =0.9; 0-1之间，闪烁的线条间隔  由于给图片加，那么就要粗一点，篇幅大一点大气点

正如官方所说

Shimmer is an easy way to add a shimmering effect to any view in your app. It's useful as an unobtrusive loading indicator.

Shimmer was originally developed to show loading status in Paper.

对了，突然想到一点，可以用来做预加载指示器啊，各位可以尝试下，这里就不介绍了

就是这么的简单到没朋友啊   有需要的可以下载下来看看

Demo地址：https://github.com/DeftMKJ/FACEBOOKShimming