如圖:

image.png

這是一個(gè)xib搭建的界面,里面的button 是通過(guò)純代碼自定義創(chuàng)建的,包含動(dòng)畫,button的代碼如下:

#import <UIKit/UIKit.h>

typedef void(^finishBlock)();

@interface LYButton : UIView

@property (nonatomic,copy) finishBlock translateBlock;

@end

#import "LYButton.h"

@interface LYButton()

//渲染層
@property (nonatomic,strong) CAShapeLayer *maskLayer;

@property (nonatomic,strong) CAShapeLayer *shapeLayer;

@property (nonatomic,strong) CAShapeLayer *loadingLayer;

@property (nonatomic,strong) CAShapeLayer *clickCicrleLayer;

@property (nonatomic,strong) UIButton *button;

@end


@implementation LYButton

- (instancetype)initWithCoder:(NSCoder *)coder
{
    self = [super initWithCoder:coder];
    if (self) {
//        NSLog(@"LYButton----initWithCoder");
//        NSLog(@"%@",NSStringFromCGRect(self.frame));
        [self starInitWithFrame:self.frame];
        
    }
    return self;
}


-(instancetype)initWithFrame:(CGRect)frame{
    
    NSLog(@"-----");
    if(self = [super initWithFrame:frame]){
        [self starInitWithFrame:frame];
//        _shapeLayer = [self drawMask:frame.size.height/2];
//        _shapeLayer.fillColor = [UIColor clearColor].CGColor;
//        _shapeLayer.strokeColor = [UIColor whiteColor].CGColor;
//        _shapeLayer.lineWidth = 2;
//        [self.layer addSublayer:_shapeLayer];
//
//        [self.layer addSublayer:self.maskLayer];
//
//        _button = [UIButton buttonWithType:UIButtonTypeCustom];
//        _button.frame = self.bounds;
//        [_button setTitle:@"SIGN IN" forState:UIControlStateNormal];
//        [_button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
//        _button.titleLabel.font = [UIFont systemFontOfSize:13.f];
//        [self addSubview:_button];
//        [_button addTarget:self action:@selector(clickBtn) forControlEvents:UIControlEventTouchUpInside];
    }
    return self;
}

-(void)starInitWithFrame:(CGRect)frame{
    _shapeLayer = [self drawMask:frame.size.height/2];
    _shapeLayer.fillColor = [UIColor clearColor].CGColor;
    _shapeLayer.strokeColor = [UIColor whiteColor].CGColor;
    _shapeLayer.lineWidth = 2;
    [self.layer addSublayer:_shapeLayer];
    
    [self.layer addSublayer:self.maskLayer];
    
    _button = [UIButton buttonWithType:UIButtonTypeCustom];
    _button.frame = self.bounds;
    [_button setTitle:@"SIGN IN" forState:UIControlStateNormal];
    [_button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    _button.titleLabel.font = [UIFont systemFontOfSize:13.f];
    [self addSubview:_button];
    [_button addTarget:self action:@selector(clickBtn) forControlEvents:UIControlEventTouchUpInside];
    
    
}


-(CAShapeLayer *)maskLayer{
    if(!_maskLayer){
        _maskLayer = [CAShapeLayer layer];
        _maskLayer.opacity = 0;
        _maskLayer.fillColor = [UIColor whiteColor].CGColor;
        _maskLayer.path = [self drawBezierPath:self.frame.size.width/2].CGPath;
    }
    return _maskLayer;
}

-(void)clickBtn{
    [self clickAnimation];
}

//點(diǎn)擊出現(xiàn)白色圓形
-(void)clickAnimation{
    CAShapeLayer *clickCicrleLayer = [CAShapeLayer layer];
    clickCicrleLayer.frame = CGRectMake(self.bounds.size.width/2, self.bounds.size.height/2, 5, 5);
    clickCicrleLayer.fillColor = [UIColor whiteColor].CGColor;
    clickCicrleLayer.path = [self drawclickCircleBezierPath:0].CGPath;
    [self.layer addSublayer:clickCicrleLayer];
    
    //放大變色圓形
    CABasicAnimation *basicAnimation = [CABasicAnimation animationWithKeyPath:@"path"];
    basicAnimation.duration = 0.5;
    basicAnimation.toValue = (__bridge id _Nullable)([self drawclickCircleBezierPath:(self.bounds.size.height - 10*2)/2].CGPath);
    basicAnimation.removedOnCompletion = NO;
    basicAnimation.fillMode = kCAFillModeForwards;

    [clickCicrleLayer addAnimation:basicAnimation forKey:@"clickCicrleAnimation"];
    
    _clickCicrleLayer = clickCicrleLayer;
    
    //執(zhí)行下一個(gè)動(dòng)畫
    [self performSelector:@selector(clickNextAnimation) withObject:self afterDelay:basicAnimation.duration];
}

//
-(void)clickNextAnimation{
    //圓形變圓弧
    _clickCicrleLayer.fillColor = [UIColor clearColor].CGColor;
    _clickCicrleLayer.strokeColor = [UIColor whiteColor].CGColor;
    _clickCicrleLayer.lineWidth = 10;
    
    CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
    
    //圓弧變大
    CABasicAnimation *basicAnimation = [CABasicAnimation animationWithKeyPath:@"path"];
    basicAnimation.duration = 0.5;
    basicAnimation.toValue = (__bridge id _Nullable)([self drawclickCircleBezierPath:(self.bounds.size.height - 10*2)].CGPath);
    basicAnimation.removedOnCompletion = NO;
    basicAnimation.fillMode = kCAFillModeForwards;
    
    //變透明
    CABasicAnimation *basicAnimation1 = [CABasicAnimation animationWithKeyPath:@"opacity"];
    basicAnimation1.beginTime = 0.10;
    basicAnimation1.duration = 0.5;
    basicAnimation1.toValue = @0;
    basicAnimation1.removedOnCompletion = NO;
    basicAnimation1.fillMode = kCAFillModeForwards;
    
    animationGroup.duration = basicAnimation1.beginTime + basicAnimation1.duration;
    animationGroup.removedOnCompletion = NO;
    animationGroup.fillMode = kCAFillModeForwards;
    animationGroup.animations = @[basicAnimation,basicAnimation1];
    
    [_clickCicrleLayer addAnimation:animationGroup forKey:@"clickCicrleAnimation1"];

    [self performSelector:@selector(startMaskAnimation) withObject:self afterDelay:animationGroup.duration];
    
}

//半透明的登錄按鈕的背景
-(void)startMaskAnimation{
    _maskLayer.opacity = 0.5;
    CABasicAnimation *basicAnimation = [CABasicAnimation animationWithKeyPath:@"path"];
    basicAnimation.duration = 0.25;
    basicAnimation.toValue = (__bridge id _Nullable)([self drawBezierPath:self.frame.size.height/2].CGPath);
    basicAnimation.removedOnCompletion = NO;
    basicAnimation.fillMode = kCAFillModeForwards;
    [_maskLayer addAnimation:basicAnimation forKey:@"maskAnimation"];
    
    [self performSelector:@selector(dismissAnimation) withObject:self afterDelay:basicAnimation.duration+0.2];
}

//登錄按鈕合攏并消失（透明）
-(void)dismissAnimation{
    [self removeSubViews];
    
    CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
    
    CABasicAnimation *basicAnimation = [CABasicAnimation animationWithKeyPath:@"path"];
    basicAnimation.duration = 0.2;
    basicAnimation.toValue = (__bridge id _Nullable)([self drawBezierPath:self.frame.size.width/2].CGPath);
    basicAnimation.removedOnCompletion = NO;
    basicAnimation.fillMode = kCAFillModeForwards;
    
    CABasicAnimation *basicAnimation1 = [CABasicAnimation animationWithKeyPath:@"opacity"];
    basicAnimation1.beginTime = 0.10;
    basicAnimation1.duration = 0.2;
    basicAnimation1.toValue = @0;
    basicAnimation1.removedOnCompletion = NO;
    basicAnimation1.fillMode = kCAFillModeForwards;
    
    animationGroup.animations = @[basicAnimation,basicAnimation1];
    animationGroup.duration = basicAnimation1.beginTime+basicAnimation1.duration;
    animationGroup.removedOnCompletion = NO;
    animationGroup.fillMode = kCAFillModeForwards;
    [_shapeLayer addAnimation:animationGroup forKey:@"dismissAnimation"];
    
    [self performSelector:@selector(loadingAnimation) withObject:self afterDelay:animationGroup.duration];
}

//菊花
-(void)loadingAnimation{
    _loadingLayer = [CAShapeLayer layer];
    _loadingLayer.position = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2);
    _loadingLayer.fillColor = [UIColor clearColor].CGColor;
    _loadingLayer.strokeColor = [UIColor whiteColor].CGColor;
    _loadingLayer.lineWidth = 2;
    _loadingLayer.path = [self drawLoadingBezierPath].CGPath;
    [self.layer addSublayer:_loadingLayer];

    CABasicAnimation *basicAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    basicAnimation.fromValue = @(0);
    basicAnimation.toValue = @(M_PI*2);
    basicAnimation.duration = 0.5;
    basicAnimation.repeatCount = LONG_MAX;
    [_loadingLayer addAnimation:basicAnimation forKey:@"loadingAnimation"];
    
    [self performSelector:@selector(removeAllAnimation) withObject:self afterDelay:2];

}

-(void)removeSubViews{
    [_button removeFromSuperview];
    [_maskLayer removeFromSuperlayer];
    [_loadingLayer removeFromSuperlayer];
    [_clickCicrleLayer removeFromSuperlayer];
}

-(void)removeAllAnimation{
    [self removeSubViews];
    if(self.translateBlock){
        self.translateBlock();
    }
}


-(CAShapeLayer *)drawMask:(CGFloat)x{
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    shapeLayer.frame = self.bounds;
    shapeLayer.path = [self drawBezierPath:x].CGPath;
    return shapeLayer;
}

//
-(UIBezierPath *)drawBezierPath:(CGFloat)x{
    CGFloat radius = self.bounds.size.height/2 - 3;
    CGFloat right = self.bounds.size.width-x;
    CGFloat left = x;

    UIBezierPath *bezierPath = [UIBezierPath bezierPath];
    bezierPath.lineJoinStyle = kCGLineJoinRound;
    bezierPath.lineCapStyle = kCGLineCapRound;
    //右邊圓弧
    [bezierPath addArcWithCenter:CGPointMake(right, self.bounds.size.height/2) radius:radius startAngle:-M_PI/2 endAngle:M_PI/2 clockwise:YES];
    //左邊圓弧
    [bezierPath addArcWithCenter:CGPointMake(left, self.bounds.size.height/2) radius:radius startAngle:M_PI/2 endAngle:-M_PI/2 clockwise:YES];
    //閉合弧線
    [bezierPath closePath];
    
    return bezierPath;
}


-(UIBezierPath *)drawLoadingBezierPath{
    CGFloat radius = self.bounds.size.height/2 - 3;
    UIBezierPath *bezierPath = [UIBezierPath bezierPath];
    [bezierPath addArcWithCenter:CGPointMake(0,0) radius:radius startAngle:M_PI/2 endAngle:M_PI/2+M_PI/2 clockwise:YES];
    return bezierPath;
}

//畫圓
-(UIBezierPath *)drawclickCircleBezierPath:(CGFloat)radius{
    UIBezierPath *bezierPath = [UIBezierPath bezierPath];
    /**
     *  center: 弧線中心點(diǎn)的坐標(biāo)
     radius: 弧線所在圓的半徑
     startAngle: 弧線開始的角度值
     endAngle: 弧線結(jié)束的角度值
     clockwise: 是否順時(shí)針畫弧線
     *
     */
    [bezierPath addArcWithCenter:CGPointMake(0,0) radius:radius startAngle:0 endAngle:M_PI*2 clockwise:YES];
    return bezierPath;
}
@end

這個(gè)自定義的button的代碼,大家可以直接復(fù)制過(guò)去使用;

xib中的設(shè)置如下:

image.png

其實(shí)操作就是拖一個(gè)View(什么自定義的button,我是view創(chuàng)建的),然后設(shè)置它的class為 LYButton;

這個(gè)時(shí)候運(yùn)行代碼,發(fā)現(xiàn)一個(gè)問(wèn)題,我們并沒有把這個(gè)自定義的控件加載出來(lái);

打斷點(diǎn)發(fā)現(xiàn),-(instancetype)initWithFrame:(CGRect)frame ,這個(gè)自定義控件的初始化方法并不會(huì)走;

原因:這個(gè)方法是只有純代碼創(chuàng)建,我們調(diào)用了initWithFrame,才會(huì)走,通過(guò)xib是不走這個(gè)方法的,我們需要添加一個(gè)- (instancetype)initWithCoder:(NSCoder *)coder方法,這里面其實(shí)創(chuàng)建了一個(gè)LYButton的對(duì)象了,我們需要通過(guò)initWithCoder去對(duì)這個(gè)對(duì)象進(jìn)行一些其他 的初始化操作;
上面的代碼,我已經(jīng)添加了initWithCoder,并重新調(diào)用了初始化的操作,問(wèn)題解決.