为什么80%的码农都做不了架构师？>>> 
1:
// 前提之前：增加几张jpg格式的图片，暂时写死为9张，命名格式为：（1.jpg－9.jpg）,你也可以在代码中去修改一下、谢谢!
//
// QQRedButton.m
// 仿照QQ小红点
//
// Created by 李胜兵 on 15/4/18.
// Copyright © 2015年 李胜兵. All rights reserved.
//
#import "QQRedButton.h"
#define kMaxDisance 200
#define kHeight [UIScreen mainScreen].bounds.size.height
#define kWidth [UIScreen mainScreen].bounds.size.width
@interface QQRedButton ()
@property (nonatomic, strong)UIView *smallCircleView;
@property (nonatomic, assign)CGFloat smallOriginRadius;
@property (nonatomic, strong)CAShapeLayer *shapeLayer;
@end
@implementation QQRedButton
- (instancetype)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
[self setUp];
}
return self;
}
#pragma mark - 设置按钮内容
- (void)setUp {
CGFloat w = self.bounds.size.width;
self.layer.cornerRadius = w /2;
self.smallOriginRadius = w /2;
[self setTitle:@"10" forState:UIControlStateNormal];
self.titleLabel.font = [UIFont systemFontOfSize:12];
[self setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[self setBackgroundColor:[UIColor redColor]];
// 添加pan手势
UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(pan:)];
[self addGestureRecognizer:pan];
// 添加小圆到大圆的后面:设置小圆的位置和尺寸
self.smallCircleView.center = self.center;
self.smallCircleView.bounds = self.bounds;
self.smallCircleView.layer.cornerRadius = w/2;
}
#pragma mark - 方法
- (void)pan:(UIPanGestureRecognizer *)pan {
[self.superview insertSubview:self.smallCircleView belowSubview:self];
CGPoint transPoint = [pan translationInView:self];
CGPoint center = self.center;
center.x += transPoint.x;
center.y += transPoint.y;
self.center = center;
[pan setTranslation:CGPointZero inView:self];
CGFloat d = [self circleCenterDistanceWithBigCircleViewCenter:self.center smallCircleViewCenter:self.smallCircleView.center];
CGFloat smallRadius = (self.smallOriginRadius - d / 10)>0?(self.smallOriginRadius - d / 10):0;
self.smallCircleView.bounds = CGRectMake(0, 0, smallRadius*2, smallRadius*2);
self.smallCircleView.layer.cornerRadius = smallRadius;
if (d>kMaxDisance) {
self.smallCircleView.hidden = YES;
[self.shapeLayer removeFromSuperlayer];
self.shapeLayer = nil;
}else if (d>0 && self.smallCircleView.hidden == NO) { // 有圆心距离而且小圆也显示的时候才绘制不
[self.superview.layer insertSublayer:_shapeLayer below:self.layer];
self.shapeLayer.path = [[self pathWithBigCircleView:self smallCircleView:self.smallCircleView] CGPath];
}
if (pan.state == UIGestureRecognizerStateEnded) {
if (d>kMaxDisance) {
NSMutableArray *arrM = [NSMutableArray array];
UIImageView *imgV = [[UIImageView alloc]initWithFrame:self.bounds];
for (int i = 1; i<10; i++) {
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.gif",i]];
[arrM addObject:image];
}
imgV.animationDuration = 2.2;
imgV.animationRepeatCount = 1;
imgV.animationImages = arrM;
[imgV startAnimating];
[self addSubview:imgV];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self removeFromSuperview];
});
}else {
[self.shapeLayer removeFromSuperlayer];
self.shapeLayer = nil;
self.smallCircleView.hidden = NO;
[UIView animateWithDuration:.5 delay:0 usingSpringWithDamping:.2 initialSpringVelocity:0 options:(UIViewAnimationOptionCurveLinear) animations:^{
self.center = self.smallCircleView.center;
} completion:^(BOOL finished) {
}];
}
}
}
- (CGFloat)circleCenterDistanceWithBigCircleViewCenter:(CGPoint)bigCircleViewCenter smallCircleViewCenter:(CGPoint)smallCircleViewCenter {
CGFloat offsetX = bigCircleViewCenter.x - smallCircleViewCenter.x;
CGFloat offsetY = bigCircleViewCenter.y - smallCircleViewCenter.y;
return sqrt(offsetX * offsetX + offsetY * offsetY);
}
- (UIBezierPath *)pathWithBigCircleView:(UIView *)bigCircleView smallCircleView:(UIView *)smallCircleView {
CGPoint bigCenter = bigCircleView.center;
CGFloat x2 = bigCenter.x;
CGFloat y2 = bigCenter.y;
CGFloat r2 = bigCircleView.bounds.size.width /2;
CGPoint smallCenter = smallCircleView.center;
CGFloat x1 = smallCenter.x;
CGFloat y1 = smallCenter.y;
CGFloat r1 = smallCircleView.bounds.size.width /2;
CGFloat d = [self circleCenterDistanceWithBigCircleViewCenter:bigCenter smallCircleViewCenter:smallCenter];
CGFloat sinθ = (x2 - x1) /d;
CGFloat cosθ = (y2 - y1) /d;
CGPoint pointA = CGPointMake((x1-r1*cosθ), y1+r1*sinθ);
CGPoint pointB = CGPointMake((x1+r1*cosθ), y1-r1*sinθ);
CGPoint pointC = CGPointMake((x2+r2*cosθ), y2-r2*sinθ);
CGPoint pointD = CGPointMake((x2-r2*cosθ), y2+r2*sinθ);
CGPoint pointO = CGPointMake(pointA.x+d/2 *sinθ, pointA.y + d/2 * cosθ);
CGPoint pointP = CGPointMake(pointB.x + d/2 * sinθ, pointB.y + d/2 * cosθ);
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:pointA];
[path addLineToPoint:pointB];
[path addQuadCurveToPoint:pointC controlPoint:pointP];
[path addLineToPoint:pointD];
[path addQuadCurveToPoint:pointA controlPoint:pointO];
return path;
}
#pragma mark - get
- (UIView *)smallCircleView {
if (!_smallCircleView) {
_smallCircleView = [[UIView alloc] init];
_smallCircleView.layer.cornerRadius = self.layer.cornerRadius;
_smallCircleView.backgroundColor = self.backgroundColor;
}
return _smallCircleView;
}
#pragma mark - get
- (CAShapeLayer *)shapeLayer {
if (!_shapeLayer) {
_shapeLayer = [CAShapeLayer layer];
_shapeLayer.fillColor = self.backgroundColor.CGColor;
}
return _shapeLayer;
}
@end//
// QQRedButton.h
// 仿照QQ小红点
//
// Created by 李胜兵 on 15/4/18.
// Copyright © 2015年 李胜兵. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface QQRedButton : UIButton
@end