//
// gzhGuideView.h
// GuideView
//
// Created by 郭志贺 on 2020/5/29.
// Copyright © 2020 郭志贺. All rights reserved.
//

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface gzhGuideView : UIView


-(void)showGuide:(UIView*)view;//显示引导
-(void)dismissGuide;//移除

@end

NS_ASSUME_NONNULL_END

//
// gzhGuideView.m
// GuideView
//
// Created by 郭志贺 on 2020/5/29.
// Copyright © 2020 郭志贺. All rights reserved.
//

#import "gzhGuideView.h"

@implementation gzhGuideView
-(instancetype)initWithFrame:(CGRect)frame{

  if (self = [super initWithFrame:frame]) {

    self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.6];
    //主要代码 添加路径
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:frame];
    // 这里添加第二个路径 需要扣除的部分
    [path appendPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(100, 100, 150, 40) cornerRadius:5] bezierPathByReversingPath]];

    //渲染
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    shapeLayer.path = path.CGPath;
    [self.layer setMask:shapeLayer];

    //根据需求添加按钮 实现点击事件
    UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(100, 100, 150, 40);
    [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];
    button.layer.cornerRadius = 5.0f;
    button.layer.masksToBounds = YES;
    [self addSubview:button];
  }

  return self;
}

-(void)showGuide:(UIView *)view{//添加


  [view.window addSubview:self];
  [view.window bringSubviewToFront:self];
  self.alpha = 1;


}
-(void)dismissGuide{//移除

  [self removeFromSuperview];

}
-(void)buttonClick{
  [self dismissGuide];
  NSLog(@"引导状态可点击");

}
@end

相应页面直接添加

gzhGuideView * guide = [[gzhGuideView alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight)];

dispatch_async(dispatch_get_main_queue(), ^{

[guide showGuide: self .view]; 

});

可根据不同需求进行不同的布局，核心代码就是添加路径

总结

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