iOS悬浮窗口（无论界面跳转、View始终在视图上显示，可移动）

2016.09.24 23:52* 字数 71 阅读 5925评论 9喜欢 11

让所有界面都显示，最好还是封装一个继承Window的类：JYCWindow。

先看看效果：

mygif.gif

关键代码如下：

- (instancetype)initWithFrame:(CGRect)frame mainImageName:(NSString*)name bgcolor:(UIColor *)bgcolor animationColor:animationColor

{

    if(self = [super initWithFrame:frame])

    {

        NSAssert(name != nil, @"mainImageName can't be nil !");

        self.backgroundColor = [UIColor clearColor];

        self.windowLevel = UIWindowLevelAlert + 1;  //如果想在 alert 之上，则改成 + 2

        self.rootViewController = [UIViewController new];

        [self makeKeyAndVisible];

        _bgcolor = bgcolor;

        _frameWidth = frame.size.width;

        _animationColor = animationColor;

        _mainImageButton =  [UIButton buttonWithType:UIButtonTypeCustom];

        [_mainImageButton setFrame:(CGRect){0, 0,frame.size.width, frame.size.height}];

        [_mainImageButton setImage:[UIImage imageNamed:name] forState:UIControlStateNormal];

        //        _mainImageButton.layer.cornerRadius = frame.size.width*0.5;

        //        _mainImageButton.layer.masksToBounds= YES;

        _mainImageButton.alpha = normalAlpha;

        [_mainImageButton addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

        if (_animationColor) {

            [_mainImageButton addTarget:self action:@selector(mainBtnTouchDown) forControlEvents:UIControlEventTouchDown];

        }

        [self addSubview:_mainImageButton];

         // 增加拖动window的手势

        _pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(locationChange:)];

        _pan.delaysTouchesBegan = NO;

        [self addGestureRecognizer:_pan];

        _tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(click:)];

        [self addGestureRecognizer:_tap];

        [self performSelector:@selector(justbegin) withObject:nil afterDelay:statusChangeDuration];

    }

    return self;

}

至于怎么移动，怎么动画，直接看.h和.m文件如下：

JYCWindow.h###



#import <UIKit/UIKit.h>

typedef void(^CallTheService)(void);

@interface JYCWindow : UIWindow

//重要：所有图片都要是圆形的，程序里并没有自动处理成圆形

//  warning: frame的长宽必须相等

- (instancetype)initWithFrame:(CGRect)frame mainImageName:(NSString*)name bgcolor:(UIColor *)bgcolor;

// 长按雷达辐射效果

- (instancetype)initWithFrame:(CGRect)frame mainImageName:(NSString*)name bgcolor:(UIColor *)bgcolor animationColor:animationColor;

// 显示（默认）

- (void)showWindow;

// 隐藏

- (void)dissmissWindow;

@property (nonatomic,copy)CallTheService callService;

@end

JYCWindow.m###



#import "JYCWindow.h"

#define kk_WIDTH self.frame.size.width

#define kk_HEIGHT self.frame.size.height

#define kScreenWidth [[UIScreen mainScreen] bounds].size.width

#define kScreenHeight [[UIScreen mainScreen] bounds].size.height

#define animateDuration 0.3       //位置改变动画时间

#define showDuration 0.1          //展开动画时间

#define statusChangeDuration  3.0    //状态改变时间

#define normalAlpha  1.0           //正常状态时背景alpha值

#define sleepAlpha  0.5           //隐藏到边缘时的背景alpha值

#define myBorderWidth 1.0         //外框宽度

#define marginWith  5             //间隔

#define WZFlashInnerCircleInitialRaius  20

@interface JYCWindow ()

@property(nonatomic)NSInteger frameWidth;

@property(nonatomic,strong)UIPanGestureRecognizer *pan;

@property(nonatomic,strong)UITapGestureRecognizer *tap;

@property(nonatomic,strong)UIButton *mainImageButton;

@property(nonatomic,strong)UIColor *bgcolor;

@property(nonatomic,strong)CAAnimationGroup *animationGroup;

@property(nonatomic,strong)CAShapeLayer *circleShape;

@property(nonatomic,strong)UIColor *animationColor;

@end

@implementation JYCWindow

- (instancetype)initWithFrame:(CGRect)frame

{

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code

    }

    return self;

}

- (instancetype)initWithFrame:(CGRect)frame mainImageName:(NSString*)name bgcolor:(UIColor *)bgcolor{

    return [self initWithFrame:frame mainImageName:name bgcolor:bgcolor animationColor:nil];

}

- (instancetype)initWithFrame:(CGRect)frame mainImageName:(NSString*)name bgcolor:(UIColor *)bgcolor animationColor:animationColor

{

    if(self = [super initWithFrame:frame])

    {

        NSAssert(name != nil, @"mainImageName can't be nil !");

        self.backgroundColor = [UIColor clearColor];

        self.windowLevel = UIWindowLevelAlert + 1;  //如果想在 alert 之上，则改成 + 2

        self.rootViewController = [UIViewController new];

        [self makeKeyAndVisible];

        _bgcolor = bgcolor;

        _frameWidth = frame.size.width;

        _animationColor = animationColor;

        _mainImageButton =  [UIButton buttonWithType:UIButtonTypeCustom];

        [_mainImageButton setFrame:(CGRect){0, 0,frame.size.width, frame.size.height}];

        [_mainImageButton setImage:[UIImage imageNamed:name] forState:UIControlStateNormal];

        //        _mainImageButton.layer.cornerRadius = frame.size.width*0.5;

        //        _mainImageButton.layer.masksToBounds= YES;

        _mainImageButton.alpha = normalAlpha;

        [_mainImageButton addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

        if (_animationColor) {

            [_mainImageButton addTarget:self action:@selector(mainBtnTouchDown) forControlEvents:UIControlEventTouchDown];

        }

        [self addSubview:_mainImageButton];

//        [self doBorderWidth:myBorderWidth color:nil cornerRadius:_frameWidth/2];

        _pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(locationChange:)];

        _pan.delaysTouchesBegan = NO;

        [self addGestureRecognizer:_pan];

        _tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(click:)];

        [self addGestureRecognizer:_tap];

        [self performSelector:@selector(justbegin) withObject:nil afterDelay:statusChangeDuration];

    }

    return self;

}

- (void)dissmissWindow{

    self.hidden = YES;

}

- (void)showWindow{

    self.hidden = NO;

}

- (void)justbegin{

    [self performSelector:@selector(changeStatus) withObject:nil afterDelay:statusChangeDuration];

    CGPoint panPoint = CGPointMake(kScreenWidth-80, kScreenHeight-150);

    [self changBoundsabovePanPoint:panPoint];

}

- (void)changBoundsabovePanPoint:(CGPoint)panPoint{

    if(panPoint.x <= kScreenWidth/2)

    {

        if(panPoint.y <= 40+kk_HEIGHT/2 && panPoint.x >= 20+kk_WIDTH/2)

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(panPoint.x, kk_HEIGHT/2);

            }];

        }

        else if(panPoint.y >= kScreenHeight-kk_HEIGHT/2-40 && panPoint.x >= 20+kk_WIDTH/2)

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(panPoint.x, kScreenHeight-kk_HEIGHT/2);

            }];

        }

        else if (panPoint.x < kk_WIDTH/2+20 && panPoint.y > kScreenHeight-kk_HEIGHT/2)

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(kk_WIDTH/2, kScreenHeight-kk_HEIGHT/2);

            }];

        }

        else

        {

            CGFloat pointy = panPoint.y < kk_HEIGHT/2 ? kk_HEIGHT/2 :panPoint.y;

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(kk_WIDTH/2, pointy);

            }];

        }

    }

    else if(panPoint.x > kScreenWidth/2)

    {

        if(panPoint.y <= 40+kk_HEIGHT/2 && panPoint.x < kScreenWidth-kk_WIDTH/2-20 )

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(panPoint.x, kk_HEIGHT/2);

            }];

        }

        else if(panPoint.y >= kScreenHeight-40-kk_HEIGHT/2 && panPoint.x < kScreenWidth-kk_WIDTH/2-20)

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(panPoint.x, kScreenHeight-kk_HEIGHT/2);

            }];

        }

        else if (panPoint.x > kScreenWidth-kk_WIDTH/2-20 && panPoint.y < kk_HEIGHT/2)

        {

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(kScreenWidth-kk_WIDTH/2, kk_HEIGHT/2);

            }];

        }

        else

        {

            CGFloat pointy = panPoint.y > kScreenHeight-kk_HEIGHT/2 ? kScreenHeight-kk_HEIGHT/2 :panPoint.y;

            [UIView animateWithDuration:animateDuration animations:^{

                self.center = CGPointMake(kScreenWidth-kk_WIDTH/2, pointy);

            }];

        }

    }

}

//改变位置

- (void)locationChange:(UIPanGestureRecognizer*)p

{

    CGPoint panPoint = [p locationInView:[[UIApplication sharedApplication] keyWindow]];

    if(p.state == UIGestureRecognizerStateBegan)

    {

        [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(changeStatus) object:nil];

        _mainImageButton.alpha = normalAlpha;

    }

    if(p.state == UIGestureRecognizerStateChanged)

    {

        self.center = CGPointMake(panPoint.x, panPoint.y);

    }

    else if(p.state == UIGestureRecognizerStateEnded)

    {

        [self stopAnimation];

        [self performSelector:@selector(changeStatus) withObject:nil afterDelay:statusChangeDuration];

        [self changBoundsabovePanPoint:panPoint];

    }

}

//点击事件

- (void)click:(UITapGestureRecognizer*)p

{

    [self stopAnimation];

    _mainImageButton.alpha = normalAlpha;

    //拉出悬浮窗

    if (self.center.x == 0) {

        self.center = CGPointMake(kk_WIDTH/2, self.center.y);

    }else if (self.center.x == kScreenWidth) {

        self.center = CGPointMake(kScreenWidth - kk_WIDTH/2, self.center.y);

    }else if (self.center.y == 0) {

        self.center = CGPointMake(self.center.x, kk_HEIGHT/2);

    }else if (self.center.y == kScreenHeight) {

        self.center = CGPointMake(self.center.x, kScreenHeight - kk_HEIGHT/2);

    }

    if (self.callService) {

        self.callService();

    }

}

- (void)changeStatus

{

    [UIView animateWithDuration:1.0 animations:^{

        _mainImageButton.alpha = sleepAlpha;

    }];

    [UIView animateWithDuration:0.5 animations:^{

        CGFloat x = self.center.x < 20+kk_WIDTH/2 ? 0 :  self.center.x > kScreenWidth - 20 -kk_WIDTH/2 ? kScreenWidth : self.center.x;

        CGFloat y = self.center.y < 40 + kk_HEIGHT/2 ? 0 : self.center.y > kScreenHeight - 40 - kk_HEIGHT/2 ? kScreenHeight : self.center.y;

        //禁止停留在4个角

        if((x == 0 && y ==0) || (x == kScreenWidth && y == 0) || (x == 0 && y == kScreenHeight) || (x == kScreenWidth && y == kScreenHeight)){

            y = self.center.y;

        }

        self.center = CGPointMake(x, y);

    }];

}

//- (void)doBorderWidth:(CGFloat)width color:(UIColor *)color cornerRadius:(CGFloat)cornerRadius{

//    //  self.layer.masksToBounds = YES;

//    self.layer.cornerRadius = cornerRadius;

//    self.layer.borderWidth = width;

//    if (!color) {

//        self.layer.borderColor = [UIColor whiteColor].CGColor;

//    }else{

//        self.layer.borderColor = color.CGColor;

//    }

//}

#pragma mark  ------- animation -------------

- (void)buttonAnimation{

    self.layer.masksToBounds = NO;

    CGFloat scale = 1.0f;

//

    CGFloat width = self.mainImageButton.bounds.size.width, height = self.mainImageButton.bounds.size.height;

//

    CGFloat biggerEdge = width > height ? width : height, smallerEdge = width > height ? height : width;

    CGFloat radius = smallerEdge / 2 > WZFlashInnerCircleInitialRaius ? WZFlashInnerCircleInitialRaius : smallerEdge / 2;

    scale = biggerEdge / radius + 0.5;

    _circleShape = [self createCircleShapeWithPosition:CGPointMake(width/2, height/2)

                                              pathRect:CGRectMake(0, 0, radius * 3, radius * 3)

                                                radius:radius];

    // 方形放大效果

//            scale = 2.5f;

//            _circleShape = [self createCircleShapeWithPosition:CGPointMake(width/2, height/2)

//                                                     pathRect:CGRectMake(-CGRectGetMidX(self.mainImageButton.bounds), -CGRectGetMidY(self.mainImageButton.bounds), width, height)

//                                                       radius:self.mainImageButton.layer.cornerRadius];

    [self.mainImageButton.layer addSublayer:_circleShape];

    CAAnimationGroup *groupAnimation = [self createFlashAnimationWithScale:scale duration:1.0f];

    [_circleShape addAnimation:groupAnimation forKey:nil];

}

- (void)stopAnimation{

    [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(buttonAnimation) object:nil];

    if (_circleShape) {

        [_circleShape removeFromSuperlayer];

    }

}

- (CAShapeLayer *)createCircleShapeWithPosition:(CGPoint)position pathRect:(CGRect)rect radius:(CGFloat)radius

{

    CAShapeLayer *circleShape = [CAShapeLayer layer];

    circleShape.path = [self createCirclePathWithRadius:rect radius:radius];

    circleShape.position = position;

    // 雷达覆盖区域

    circleShape.bounds = CGRectMake(0, 0, radius * 3, radius * 3);

    circleShape.fillColor = _animationColor.CGColor;

    //  圆圈放大效果

    //  circleShape.fillColor = [UIColor clearColor].CGColor;

    //  circleShape.strokeColor = [UIColor purpleColor].CGColor;

    circleShape.opacity = 0;

    circleShape.lineWidth = 1;

    return circleShape;

}

- (CAAnimationGroup *)createFlashAnimationWithScale:(CGFloat)scale duration:(CGFloat)duration

{

    CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];

    scaleAnimation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];

    scaleAnimation.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(scale, scale, 1)];

    CABasicAnimation *alphaAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];

    alphaAnimation.fromValue = @1;

    alphaAnimation.toValue = @0;

    _animationGroup = [CAAnimationGroup animation];

    _animationGroup.animations = @[scaleAnimation, alphaAnimation];

    _animationGroup.duration = duration;

    _animationGroup.repeatCount = INFINITY;

    _animationGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

    return _animationGroup;

}

- (CGPathRef)createCirclePathWithRadius:(CGRect)frame radius:(CGFloat)radius

{

    return [UIBezierPath bezierPathWithRoundedRect:frame cornerRadius:radius].CGPath;

}

- (void)mainBtnTouchDown{

    [self performSelector:@selector(buttonAnimation) withObject:nil afterDelay:0.5];

}

/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect {

    // Drawing code

}

*/

@end

最后附上小demo

巴特西

iOS悬浮窗口（无论界面跳转、View始终在视图上显示，可移动）

让所有界面都显示，最好还是封装一个继承Window的类：JYCWindow。

JYCWindow.h###

JYCWindow.m###

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