iOS开发添加新手引导

往往项目中经常出现此类需求

用户通过点击引导按钮可响应页面附带按钮的点击事件。

 //
 //  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: green: blue: 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(, , , ) cornerRadius:] 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(, , , );
         [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 = ;

 }
 -(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 * guideView = [[gzhGuideView alloc]initWithFrame:CGRectMake(, , ScreenW, ScreenH)];

[guideView 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