ShakeLabel.m
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//
// ShakeLabel.m
// presentAnimation
//
// Created by 许博 on 16/7/14.
// Copyright © 2016年 许博. All rights reserved.
//
#import "ShakeLabel.h"
@implementation ShakeLabel
- (void)startAnimWithDuration:(NSTimeInterval)duration {
// [UIView animateKeyframesWithDuration:duration delay:0 options:0 animations:^{
// [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1/3.0 animations:^{
//
// self.transform = CGAffineTransformMakeScale(3, 3);
// }];
// [UIView addKeyframeWithRelativeStartTime:1/3.0 relativeDuration:1/3.0 animations:^{
//
// self.transform = CGAffineTransformMakeScale(0.8, 0.8);
// }];
//
// [UIView addKeyframeWithRelativeStartTime:2/3.0 relativeDuration:1/3.0 animations:^{
//
// self.transform = CGAffineTransformMakeScale(1.0, 1.0);
// }];
// } completion:nil];
[UIView animateKeyframesWithDuration:duration delay:0 options:0 animations:^{
[UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1.0 animations:^{
self.transform = CGAffineTransformMakeScale(3, 3);
}];
[UIView addKeyframeWithRelativeStartTime:1.0 relativeDuration:1.0 animations:^{
self.transform = CGAffineTransformMakeScale(0.8, 0.8);
}];
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.25 delay:0 usingSpringWithDamping:0.4 initialSpringVelocity:10 options:UIViewAnimationOptionCurveEaseInOut animations:^{
self.transform = CGAffineTransformMakeScale(1.0, 1.0);
} completion:nil];
}];
}
// 重写 drawTextInRect 文字描边效果
- (void)drawTextInRect:(CGRect)rect {
CGSize shadowOffset = self.shadowOffset;
UIColor *textColor = self.textColor;
CGContextRef c = UIGraphicsGetCurrentContext();
CGContextSetLineWidth(c, 2);
CGContextSetLineJoin(c, kCGLineJoinRound);
CGContextSetTextDrawingMode(c, kCGTextStroke);
self.textColor = _borderColor;
[super drawTextInRect:rect];
CGContextSetTextDrawingMode(c, kCGTextFill);
self.textColor = textColor;
self.shadowOffset = CGSizeMake(0, 0);
[super drawTextInRect:rect];
self.shadowOffset = shadowOffset;
}
@end