POPSpring动画参数详解

 

效果

 

源码

////  POPSpringParameterController.m//  Animations////  Created by YouXianMing on 15/11/29.//  Copyright © 2015年 YouXianMing. All rights reserved.//#import "POPSpringParameterController.h"#import "RangeValueView.h"#import "UIView+SetRect.h"#import "POP.h"#import "FontAttribute.h"#import "ForegroundColorAttribute.h"#import "NSMutableAttributedString+StringAttribute.h"#define  Width   [UIScreen mainScreen].bounds.size.width#define  Height  [UIScreen mainScreen].bounds.size.height@interface POPSpringParameterController ()@property (nonatomic, strong) UILabel  *secondsLabel;@property (nonatomic, strong) NSDate   *dateStart;@property (nonatomic, strong) RangeValueView *rangeSpeed;@property (nonatomic, strong) RangeValueView *rangeBounciness;@property (nonatomic, strong) RangeValueView *rangeMass;@property (nonatomic, strong) RangeValueView *rangeFriction;@property (nonatomic, strong) RangeValueView *rangeTension;@property (nonatomic, strong) UIButton *showView;@end@implementation POPSpringParameterController- (void)viewDidLoad {        [super viewDidLoad];}- (void)setup {        [super setup];        [self initSecondLabel];        [self initButton];        [self initRangeViews];        [self bringTitleViewToFront];}- (void)initSecondLabel {        self.secondsLabel                = [[UILabel alloc] initWithFrame:CGRectMake(10, 10 + 64, 100, 20)];    self.secondsLabel.attributedText = [self stringWithFloat:0.f];    [self.view addSubview:self.secondsLabel];}- (NSAttributedString *)stringWithFloat:(CGFloat)value {        // 字符串    NSString *stringValue  = [NSString stringWithFormat:@"%.2f", value];    NSString *secondString = [NSString stringWithFormat:@"seconds"];    NSString *totalString  = [NSString stringWithFormat:@"%@ %@", stringValue, secondString];        // 字体    UIFont *allFont        = Font_Avenir(12);    UIFont *numFont        = Font_Avenir_Light(20);        FontAttribute *totalFont = [FontAttribute new];    totalFont.font           = allFont;    totalFont.effectRange    = NSMakeRange(0, totalString.length);        FontAttribute *valueFont = [FontAttribute new];    valueFont.font           = numFont;    valueFont.effectRange    = [totalString rangeOfString:stringValue];        ForegroundColorAttribute *textColor = [ForegroundColorAttribute new];    textColor.color                     = [UIColor grayColor];    textColor.effectRange               = NSMakeRange(0, totalString.length);        ForegroundColorAttribute *numColor = [ForegroundColorAttribute new];    numColor.color                     = [UIColor blackColor];    numColor.effectRange               = [totalString rangeOfString:stringValue];        NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:totalString];    [attributeString addStringAttribute:totalFont];    [attributeString addStringAttribute:valueFont];    [attributeString addStringAttribute:textColor];    [attributeString addStringAttribute:numColor];        return attributeString;}- (void)initButton {        CGFloat gap = Height - 60 - 40*4 - 64;        CGFloat width                    = 100.f;    self.showView                    = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, width, width)];    self.showView.center             = CGPointMake(self.view.middleX, 64 + gap / 2.f);    self.showView.backgroundColor    = [UIColor cyanColor];    self.showView.layer.cornerRadius = self.showView.width / 2.f;    [self.view addSubview:self.showView];    [self.showView addTarget:self                      action:@selector(doAnimation)            forControlEvents:UIControlEventTouchUpInside];}- (void)doAnimation {        // 移除动画    [self.showView.layer pop_removeAllAnimations];        POPSpringAnimation *spring = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerScaleXY];        // 设置代理    spring.delegate            = self;        // 动画起始值 + 动画结束值    spring.fromValue           = [NSValue valueWithCGSize:CGSizeMake(1.f, 1.f)];    spring.toValue             = [NSValue valueWithCGSize:CGSizeMake(2.f, 2.f)];        // 参数的设置    spring.springSpeed         = self.rangeSpeed.currentValue;    spring.springBounciness    = self.rangeBounciness.currentValue;    spring.dynamicsMass        = self.rangeMass.currentValue;    spring.dynamicsFriction    = self.rangeFriction.currentValue;    spring.dynamicsTension     = self.rangeTension.currentValue;        // 执行动画    [self.showView.layer pop_addAnimation:spring forKey:nil];}- (void)pop_animationDidStart:(POPAnimation *)anim {        self.dateStart = [NSDate date];}- (void)pop_animationDidApply:(POPAnimation *)anim {        CGFloat seconds                  = -[self.dateStart timeIntervalSinceNow];    self.secondsLabel.attributedText = [self stringWithFloat:seconds];}- (void)pop_animationDidStop:(POPAnimation *)anim finished:(BOOL)finished {        CGFloat seconds                  = -[self.dateStart timeIntervalSinceNow];    self.secondsLabel.attributedText = [self stringWithFloat:seconds];}- (void)initRangeViews {        self.rangeSpeed = [RangeValueView rangeValueViewWithFrame:CGRectMake(10, Height - 60, Width - 20, 0)                                                         name:@"速度  Speed"                                                     minValue:0.f                                                     maxValue:20.f                                                 defaultValue:12.f];    [self.view addSubview:self.rangeSpeed];            self.rangeBounciness = [RangeValueView rangeValueViewWithFrame:CGRectMake(10, Height - 60 - 40, Width - 20, 0)                                                              name:@"弹力  Bounciness"                                                          minValue:0.f                                                          maxValue:20.f                                                      defaultValue:4.f];    [self.view addSubview:self.rangeBounciness];            self.rangeMass = [RangeValueView rangeValueViewWithFrame:CGRectMake(10, Height - 60 - 40*2, Width - 20, 0)                                                        name:@"质量  Mass"                                                    minValue:0.1                                                    maxValue:10.f                                                defaultValue:1.f];    [self.view addSubview:self.rangeMass];            self.rangeFriction = [RangeValueView rangeValueViewWithFrame:CGRectMake(10, Height - 60 - 40*3, Width - 20, 0)                                                            name:@"摩擦  Friction"                                                        minValue:1                                                        maxValue:50                                                    defaultValue:30.486980];    [self.view addSubview:self.rangeFriction];            self.rangeTension = [RangeValueView rangeValueViewWithFrame:CGRectMake(10, Height - 60 - 40*4, Width - 20, 0)                                                           name:@"拉力  Tension"                                                       minValue:1                                                       maxValue:1000                                                   defaultValue:300];    [self.view addSubview:self.rangeTension];}@end

 

细节