IOS实现签到特效(散花效果)的实例代码

#import 
/// 领取奖励成功
@interface RewardSuccess : NSObject
/**
 * 成功动画
 */
+ (void)show;

@end

#import "RewardSuccess.h"
#import "RewardSuccessWindow.h"
#define EmitterColor_Red [UIColor colorWithRed:255/255.0 green:0 blue:139/255.0 alpha:1]
#define EmitterColor_Yellow [UIColor colorWithRed:251/255.0 green:197/255.0 blue:13/255.0 alpha:1]
#define EmitterColor_Blue [UIColor colorWithRed:50/255.0 green:170/255.0 blue:207/255.0 alpha:1]
@implementation RewardSuccess
+ (void)show
{
 UIWindow *window = [UIApplication sharedApplication].keyWindow;
 UIView *backgroundView = [[UIView alloc] initWithFrame:window.bounds];
 backgroundView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.8];
 [window addSubview:backgroundView];
 RewardSuccessWindow *successWindow = [[RewardSuccessWindow alloc] initWithFrame:CGRectZero];
 [backgroundView addSubview:successWindow];
 //缩放
 successWindow.transform=CGAffineTransformMakeScale(0.01f, 0.01f);
 successWindow.alpha = 0;
 [UIView animateWithDuration:0.4 animations:^{
 successWindow.transform = CGAffineTransformMakeScale(1.0f, 1.0f);
 successWindow.alpha = 1;
 }];
 //3s 消失
 double delayInSeconds = 3;
 dispatch_time_t delayInNanoSeconds = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
 dispatch_after(delayInNanoSeconds, dispatch_get_main_queue(), ^(void){
 [UIView animateWithDuration:0.4 animations:^{
  successWindow.transform = CGAffineTransformMakeScale(.3f, .3f);
  successWindow.alpha = 0;
 }completion:^(BOOL finished) {
  [backgroundView removeFromSuperview];
 }];
 });
 //开始粒子效果
 CAEmitterLayer *emitterLayer = addEmitterLayer(backgroundView,successWindow);
 startAnimate(emitterLayer);
}
CAEmitterLayer *addEmitterLayer(UIView *view,UIView *window)
{
 //色块粒子
 CAEmitterCell *subCell1 = subCell(imageWithColor(EmitterColor_Red));
 subCell1.name = @"red";
 CAEmitterCell *subCell2 = subCell(imageWithColor(EmitterColor_Yellow));
 subCell2.name = @"yellow";
 CAEmitterCell *subCell3 = subCell(imageWithColor(EmitterColor_Blue));
 subCell3.name = @"blue";
 CAEmitterCell *subCell4 = subCell([UIImage imageNamed:@"success_star"]);
 subCell4.name = @"star";
 CAEmitterLayer *emitterLayer = [CAEmitterLayer layer];
 emitterLayer.emitterPosition = window.center;
 emitterLayer.emitterPosition = window.center;
 emitterLayer.emitterSize = window.bounds.size;
 emitterLayer.emitterMode = kCAEmitterLayerOutline;
 emitterLayer.emitterShape = kCAEmitterLayerRectangle;
 emitterLayer.renderMode = kCAEmitterLayerOldestFirst;
 emitterLayer.emitterCells = @[subCell1,subCell2,subCell3,subCell4];
 [view.layer addSublayer:emitterLayer];
 return emitterLayer;

}
void startAnimate(CAEmitterLayer *emitterLayer)
{
 CABasicAnimation *redBurst = [CABasicAnimation animationWithKeyPath:@"emitterCells.red.birthRate"];
 redBurst.fromValue = [NSNumber numberWithFloat:30];
 redBurst.toValue  = [NSNumber numberWithFloat: 0.0];
 redBurst.duration = 0.5;
 redBurst.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
 CABasicAnimation *yellowBurst = [CABasicAnimation animationWithKeyPath:@"emitterCells.yellow.birthRate"];
 yellowBurst.fromValue = [NSNumber numberWithFloat:30];
 yellowBurst.toValue  = [NSNumber numberWithFloat: 0.0];
 yellowBurst.duration = 0.5;
 yellowBurst.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
 CABasicAnimation *blueBurst = [CABasicAnimation animationWithKeyPath:@"emitterCells.blue.birthRate"];
 blueBurst.fromValue = [NSNumber numberWithFloat:30];
 blueBurst.toValue  = [NSNumber numberWithFloat: 0.0];
 blueBurst.duration = 0.5;
 blueBurst.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
 CABasicAnimation *starBurst = [CABasicAnimation animationWithKeyPath:@"emitterCells.star.birthRate"];
 starBurst.fromValue = [NSNumber numberWithFloat:30];
 starBurst.toValue  = [NSNumber numberWithFloat: 0.0];
 starBurst.duration = 0.5;
 starBurst.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
 CAAnimationGroup *group = [CAAnimationGroup animation];
 group.animations = @[redBurst,yellowBurst,blueBurst,starBurst];
 [emitterLayer addAnimation:group forKey:@"heartsBurst"];
}
CAEmitterCell *subCell(UIImage *image)
{
 CAEmitterCell * cell = [CAEmitterCell emitterCell];
 cell.name = @"heart";
 cell.contents = (__bridge id _Nullable)image.CGImage;
 // 缩放比例
 cell.scale = 0.6;
 cell.scaleRange = 0.6;
 // 每秒产生的数量
 // cell.birthRate = 40;
 cell.lifetime = 20;
 // 每秒变透明的速度
 // snowCell.alphaSpeed = -0.7;
 // snowCell.redSpeed = 0.1;
 // 秒速
 cell.velocity = 200;
 cell.velocityRange = 200;
 cell.yAcceleration = 9.8;
 cell.xAcceleration = 0;
 //掉落的角度范围
 cell.emissionRange = M_PI;
 cell.scaleSpeed = -0.05;
 //// cell.alphaSpeed = -0.3;
 cell.spin  = 2 * M_PI;
 cell.spinRange = 2 * M_PI;
 return cell;
}
UIImage *imageWithColor(UIColor *color)
{
 CGRect rect = CGRectMake(0, 0, 13, 17);
 UIGraphicsBeginImageContext(rect.size);
 CGContextRef context = UIGraphicsGetCurrentContext();
 CGContextSetFillColorWithColor(context, [color CGColor]);
 CGContextFillRect(context, rect);
 UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
 UIGraphicsEndImageContext();
 return image;
}
@end

#import 
/// 领取奖励成功提示框
@interface RewardSuccessWindow : UIView
@end

#import "RewardSuccessWindow.h"
static CGFloat SuccessWindow_;
static CGFloat SuccessWindow_hight = 170;
@implementation RewardSuccessWindow
 (instancetype)initWithFrame:(CGRect)frame
{
 CGSize screenSize = [UIScreen mainScreen].bounds.size;
 self = [super initWithFrame:CGRectMake((screenSize.width - SuccessWindow_width)/2.0 , (screenSize.height - SuccessWindow_hight)/2.0, SuccessWindow_width, SuccessWindow_hight)];
 if (self)
 {
 [self configSubViews];
 }
 return self;
}
- (void)configSubViews
{
 self.backgroundColor = [UIColor whiteColor];
 self.layer.cornerRadius = 10;
 self.layer.masksToBounds = YES;
 UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 45, SuccessWindow_width, 22)];
 titleLabel.text = @"恭喜您，领取成功！";
 titleLabel.font = [UIFont systemFontOfSize:19.0];
 titleLabel.textAlignment = NSTextAlignmentCenter;
 [self addSubview:titleLabel];
 UILabel *expLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 75, SuccessWindow_width, 43)];
 expLabel.font = [UIFont systemFontOfSize:15];
 expLabel.textAlignment = NSTextAlignmentCenter;
 [self addSubview:expLabel];
 NSString *string = @"获得经验：+6";
 NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:string];
 [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(0, string.length)];
 [attributedString addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"MarkerFelt-Thin" size:35] range:NSMakeRange(5,2)];
 NSShadow *shadow =[[NSShadow alloc] init];
 shadow.shadowOffset = CGSizeMake(1, 3);
 [attributedString addAttribute:NSShadowAttributeName value:shadow range:NSMakeRange(5,2)];
 [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor yellowColor] range:NSMakeRange(5,2)];
 expLabel.attributedText = attributedString;
 UILabel *bottomLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 135, SuccessWindow_width, 22)];
 bottomLabel.text = @"可以在我的->我的奖励中查看获得奖励";
 bottomLabel.font = [UIFont systemFontOfSize:13.0];
 bottomLabel.textAlignment = NSTextAlignmentCenter;
 bottomLabel.textColor = [UIColor colorWithRed:177/255.0 green:177/255.0 blue:177/255.0 alpha:1];
 [self addSubview:bottomLabel];
}

@end