往往專案中經常出現此類需求

使用者通過點選引導按鈕可響應頁面附帶按鈕的點選事件。

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

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface gzhGuideView : UIView


-(void)showGuide:(UIView*)view;//顯示引導
-(void)dismissGuide;//移除

@end

NS_ASSUME_NONNULL_END

//
// gzhGuideView.m
// GuideView
//
// Created by 郭志賀 on 2020/5/29.
// Copyright © 2020 郭志賀. 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];
    //主要程式碼 新增路徑
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:frame];
    // 這裡新增第二個路徑 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];

    //根據需求新增按鈕 實現點選事件
    UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(100,40);
    [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{//新增


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


}
-(void)dismissGuide{//移除

  [self removeFromSuperview];

}
-(void)buttonClick{
  [self dismissGuide];
  NSLog(@"引導狀態可點選");

}
@end

相應頁面直接新增

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

dispatch_async(dispatch_get_main_queue(),^{

[guide showGuide: self .view]; 

});

可根據不同需求進行不同的佈局，核心程式碼就是新增路徑

總結

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