54 lines
2.0 KiB
Objective-C
Executable File
54 lines
2.0 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorBallScaleMultipleAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by Nguyen Vinh on 7/20/15.
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// Copyright (c) 2015 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorBallScaleMultipleAnimation.h"
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@implementation DGActivityIndicatorBallScaleMultipleAnimation
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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CGFloat duration = 1.0f;
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NSArray *beginTimes = @[@0.0f, @0.2f, @0.4f];
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// Scale animation
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CABasicAnimation *scaleAnimation = [self createBasicAnimationWithKeyPath:@"transform.scale"];
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scaleAnimation.duration = duration;
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scaleAnimation.fromValue = @0.0f;
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scaleAnimation.toValue = @1.0f;
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// Opacity animation
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CAKeyframeAnimation *opacityAnimation = [self createKeyframeAnimationWithKeyPath:@"opacity"];
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opacityAnimation.duration = duration;
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opacityAnimation.keyTimes = @[@0.0f, @0.05f, @1.0f];
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opacityAnimation.values = @[@0.0f, @1.0f, @0.0f];
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// Animation
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CAAnimationGroup *animation = [self createAnimationGroup];;
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animation.animations = @[scaleAnimation, opacityAnimation];
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animation.duration = duration;
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animation.repeatCount = HUGE_VALF;
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animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
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for (int i = 0; i < 3; i++) {
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CAShapeLayer *circle = [CAShapeLayer layer];
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UIBezierPath *circlePath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, size.width, size.height) cornerRadius:size.width / 2];
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animation.beginTime = [beginTimes[i] floatValue];
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circle.fillColor = tintColor.CGColor;
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circle.path = circlePath.CGPath;
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circle.opacity = 0.0f;
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[circle addAnimation:animation forKey:@"animation"];
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circle.frame = CGRectMake((layer.bounds.size.width - size.width) / 2, (layer.bounds.size.height - size.height) / 2, size.width, size.height);
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[layer addSublayer:circle];
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}
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}
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@end
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