我们都知道iOS9 CASpringAnimation 弹簧动画,操作简单,容易实现,目前使用也比较广泛,下面我给大家介绍一种pop的弹簧效果,跟CASpringAnimation 弹簧动画 很相似
CocaPods加载 pod 'pop', '~> 1.0.9'
首先我们先看下动画的效果
2.gif
具体实现如下
#import "CSPlusVC.h"
#import "CSVerticalButton.h" //自定义封装的button
#import <POP.h>
@implementation CSPlusVC
- (void)viewDidLoad {
[super viewDidLoad];
[self addVerticalButtons];
}
- (void)addVerticalButtons{
//点击之前 关闭交互
self.view.userInteractionEnabled = NO;
//创建两个数组 分别存button上image的名字和title的名字
NSArray *imagesArray = @[@"renwu",@"shuju",@"shudu",@"xianhua",@"yanlun",@"quantou"];
NSArray *titleArray = @[@"人物",@"数据",@"数读",@"闲话",@"言论",@"拳头"];
// kWidth为整屏宽,kHeight为整屏高
CGFloat buttonW = kWidth*0.2;
CGFloat buttonH = buttonW + 0.04*kHeight;
CGFloat buttonStartY = (kHeight - 2*buttonW)*0.5;//buttonY的开始位置
CGFloat buttonStartX = 20;
int maxCols = 3;//每行最多三个
CGFloat xMargin = (kWidth - 2*buttonStartX - maxCols *buttonW)/(maxCols-1);
for (int i=0;i<6;i++) {
//添加6个button
CSVerticalButton *button = [[CSVerticalButton alloc] init];
//设置button的相关属性
button.titleLabel.font = [UIFont systemFontOfSize:15];
[button setTitle:titleArray[i] forState:(UIControlStateNormal)];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:imagesArray[i]] forState:(UIControlStateNormal)];
button.tag = i; //原始方法 给button一个tag值 用与后面点击方法
[button addTarget:self action:@selector(clickButtonAciton:) forControlEvents:(UIControlEventTouchUpInside)];
int row = i/maxCols; //行
int col = i%maxCols; //列
CGFloat buttonX = buttonStartX+col*(buttonW+xMargin);
CGFloat buttonEndY = buttonStartY +row*(buttonH+10);
CGFloat buttonBeginY = buttonEndY -kHeight;
[self.view addSubview:button];
//创建POPSpringAnimation动画 对象 动画结束位置就是button最终frame的位置 所以不需要一开始设置button在window中的位置 这也是跟CASpringAnimation的区别
POPSpringAnimation *anim = [POPSpringAnimation animationWithPropertyNamed:kPOPViewFrame]; //改变frame
anim.fromValue = [NSValue valueWithCGRect:CGRectMake(buttonX, buttonBeginY, buttonW, buttonH)];//动画开始位置
anim.toValue = [NSValue valueWithCGRect:CGRectMake(buttonX, buttonEndY, buttonW, buttonH)];//动画结束位置
anim.springBounciness = 15;//弹簧反弹弹度[4,20]
anim.springSpeed = 15;//弹簧速度[4,20]
anim.beginTime = CACurrentMediaTime()+0.1*i;//动画开始时间
//动画结束后 打开用户交互界面
[anim setCompletionBlock:^(POPAnimation *anim, BOOL finished) {
self.view.userInteractionEnabled = YES;
}];
[button pop_addAnimation:anim forKey:nil];
}
// 添加标语
UIImageView *sloganView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"app_slogan"]];
[self.view addSubview:sloganView];
// 标语动画
POPSpringAnimation *anim = [POPSpringAnimation animationWithPropertyNamed:kPOPViewCenter]; //改变center位置
CGFloat centerX = kWidth * 0.5;
CGFloat centerEndY = kHeight * 0.2;
CGFloat centerBeginY = centerEndY - kHeight;
anim.fromValue = [NSValue valueWithCGPoint:CGPointMake(centerX, centerBeginY)];
anim.toValue = [NSValue valueWithCGPoint:CGPointMake(centerX, centerEndY)];
anim.springBounciness = 15;
anim.springSpeed = 15;
anim.beginTime = CACurrentMediaTime() + imagesArray.count * 0.1;
[anim setCompletionBlock:^(POPAnimation *anim, BOOL finished) {
// 标语动画执行完毕, 恢复点击事件
self.view.userInteractionEnabled = YES;
}];
[sloganView pop_addAnimation:anim forKey:nil];
}
//取消按钮的方法
- (IBAction)cancelAction:(id)sender {
[self cancelWithCompletionBlock:nil];
}
//取消的block方法
- (void)cancelWithCompletionBlock:(void(^)())completionBlock
{
//关闭交互
self.view.userInteractionEnabled = NO;
int index = 0;
//遍历父视图 用于设置页面消失时的动画
for (UIButton *button in self.view.subviews) {
if ([button isKindOfClass:[CSVerticalButton class]]) {
//给button设置下坠动画 用最普通的POPBasicAnimation就可以
POPBasicAnimation *anim = [POPBasicAnimation animationWithPropertyNamed:kPOPViewCenter];
CGFloat centerY = button.center.y + kHeight;
anim.toValue = [NSValue valueWithCGPoint:CGPointMake(button.center.x, centerY)];
anim.beginTime = CACurrentMediaTime()+ index*0.1;
[button pop_addAnimation:anim forKey:nil];
index++;
if (index==5) { //在最后一个动画执行完毕后 ,页面退出 ,然后调用block ,block里执行要点击的事件
[anim setCompletionBlock:^(POPAnimation *anim, BOOL finished) {
[self dismissViewControllerAnimated:NO completion:nil];
if (completionBlock) {
completionBlock();
}
}];
}
}
}
}
相信我写的已经很详细了,如有问提,请留言
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