Botón flotante de desarrollo de iOS

Prefacio

Hay una función de botón flotante en el desarrollo.

efecto

Subir código

• SuspensionButton.h

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface SuspensionButton : UIButton

@property(nonatomic, assign)BOOL MoveEnable;
@property(nonatomic, assign)BOOL MoveEnabled;
@property(nonatomic, assign)CGPoint beginpoint;

@end

NS_ASSUME_NONNULL_END

• SuspensionButton.m

#import "SuspensionButton.h"

@implementation SuspensionButton

- (instancetype)initWithFrame:(CGRect)frame {
    
    
    if (self = [super initWithFrame:frame]) {
    
    
        self.frame = CGRectMake([[UIScreen mainScreen] bounds].size.width - 51, 50, 51, 51);
        [self setBackgroundImage:[UIImage imageNamed:@"icon_move"] forState:UIControlStateNormal];
        [self setTitle:@"Button" forState:UIControlStateNormal];
        self.titleLabel.font = [UIFont systemFontOfSize:10];
        [self setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
        _MoveEnable = YES;
    }
    return self;
}

//开始触摸的方法
//触摸-清扫
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    
    
    _MoveEnabled = NO;
    [super touchesBegan:touches withEvent:event];
    if (!_MoveEnable) {
    
    
        return;
    }
    UITouch *touch = [touches anyObject];
    _beginpoint = [touch locationInView:self];
}

//触摸移动的方法
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    
    
    _MoveEnabled = YES;//单击事件可用
    if (!_MoveEnable) {
    
    
        return;
    }
    UITouch *touch = [touches anyObject];
    CGPoint currentPosition = [touch locationInView:self];
    //偏移量
    float offsetX = currentPosition.x - _beginpoint.x;
    float offsetY = currentPosition.y - _beginpoint.y;
    //移动后的中心坐标
    self.center = CGPointMake(self.center.x + offsetX, self.center.y + offsetY);
    
    //x轴左右极限坐标
    if (self.center.x > (self.superview.frame.size.width - self.frame.size.width / 2)) {
    
    
        CGFloat x = self.superview.frame.size.width - self.frame.size.width / 2;
        self.center = CGPointMake(x, self.center.y + offsetY);
    } else if (self.center.x < self.frame.size.width / 2) {
    
    
        CGFloat x = self.frame.size.width / 2;
        self.center = CGPointMake(x, self.center.y + offsetY);
    }
    
    //y轴上下极限坐标
    if (self.center.y > (self.superview.frame.size.height - self.frame.size.height)) {
    
    
        CGFloat x = self.center.x;
        CGFloat y = self.superview.frame.size.height - self.frame.size.height * 1.5;
        self.center = CGPointMake(x, y);
    } else if (self.center.y <= self.frame.size.height) {
    
    
        CGFloat x = self.center.x;
        CGFloat y = self.frame.size.height * 1.2;
        self.center = CGPointMake(x, y);
    }
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    
    
    if (!_MoveEnable) {
    
    
        return;
    }
    
    if (self.center.x >= self.superview.frame.size.width / 2) {
    
    //向右侧移动
        //偏移动画
        [UIView beginAnimations:@"move" context:nil];
        [UIView setAnimationDuration:1];
        [UIView setAnimationDelegate:self];
        self.frame = CGRectMake(self.superview.frame.size.width - 51, self.center.y - 25.5, 51, 51);
        //提交UIView动画
        [UIView commitAnimations];
    } else {
    
    //向左侧移动
        
        [UIView beginAnimations:@"move" context:nil];
        [UIView setAnimationDuration:1];
        [UIView setAnimationDelegate:self];
        self.frame=CGRectMake(0.f,self.center.y - 25.5, 51, 51);
        //提交UIView动画
        [UIView commitAnimations];
    }
    
    //不加此句话，UIButton将一直处于按下状态
    [super touchesEnded: touches withEvent: event];
    
}

@end

utilizar

• ViewController.m

#import "ViewController.h"
#import "SuspensionButton.h"//悬浮按钮

@interface ViewController ()

@property(nonatomic, strong) SuspensionButton *suspensionButton;

@end

@implementation ViewController

- (void)viewDidLoad {
    
    
    [super viewDidLoad];
    [self.view addSubview:self.suspensionButton];
}

- (SuspensionButton *)suspensionButton {
    
    
    if(_suspensionButton == nil) {
    
    
        _suspensionButton = [SuspensionButton buttonWithType:UIButtonTypeCustom];
        _suspensionButton.backgroundColor = [UIColor grayColor];
        _suspensionButton.layer.masksToBounds = YES;
        _suspensionButton.layer.cornerRadius = self.suspensionButton.frame.size.width/2;
        [_suspensionButton addTarget:self action:@selector(suspensionButtonClick) forControlEvents:UIControlEventTouchUpInside];
    }
    return _suspensionButton;
}

- (void)suspensionButtonClick {
    
    
    
}

@end