本文讲述了ios实现签到特效(散花效果)实例代码。分享给大家供大家参考，具体如下：
散花特效
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#import <foundation/foundation.h>
/// 领取奖励成功
@interface rewardsuccess : nsobject
/**
* 成功动画
*/
+ (void)show;
@end
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#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
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领取奖励成功提示框
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#import <uikit/uikit.h>
/// 领取奖励成功提示框
@interface rewardsuccesswindow : uiview
@end
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#import "rewardsuccesswindow.h"
static cgfloat successwindow_width = 270;
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
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原文链接：https://blog.csdn.net/guigen_l/article/details/74273900