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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：

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' dopod'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;

//! @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;

- (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;}

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：