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。
1 // 2 // gzhGuideView.h 3 // GuideView 4 // 5 // Created by 郭志贺 on 2020/5/29. 6 // Copyright © 2020 郭志贺. All rights reserved. 7 // 8 9 #import <UIKit/UIKit.h> 10 11 NS_ASSUME_NONNULL_BEGIN 12 13 @interface gzhGuideView : UIView 14 15 16 -(void)showGuide:(UIView*)view;//显示引导 17 -(void)dismissGuide;//移除 18 19 @end 20 21 NS_ASSUME_NONNULL_END
1 // 2 // gzhGuideView.m 3 // GuideView 4 // 5 // Created by 郭志贺 on 2020/5/29. 6 // Copyright © 2020 郭志贺. All rights reserved. 7 // 8 9 #import "gzhGuideView.h" 10 11 @implementation gzhGuideView 12 -(instancetype)initWithFrame:(CGRect)frame{ 13 14 if (self = [super initWithFrame:frame]) { 15 16 self.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.6]; 17 //主要代码 添加路径 18 UIBezierPath *path = [UIBezierPath bezierPathWithRect:frame]; 19 // 这里添加第二个路径 需要扣除的部分 20 [path appendPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(100, 100, 150, 40) cornerRadius:5] bezierPathByReversingPath]]; 21 22 //渲染 23 CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 24 shapeLayer.path = path.CGPath; 25 [self.layer setMask:shapeLayer]; 26 27 //根据需求添加按钮 实现点击事件 28 UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom]; 29 button.frame = CGRectMake(100, 100, 150, 40); 30 [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside]; 31 button.layer.cornerRadius = 5.0f; 32 button.layer.masksToBounds = YES; 33 [self addSubview:button]; 34 } 35 36 return self; 37 } 38 39 -(void)showGuide:(UIView *)view{//添加 40 41 42 [view.window addSubview:self]; 43 [view.window bringSubviewToFront:self]; 44 self.alpha = 1; 45 46 47 } 48 -(void)dismissGuide{//移除 49 50 [self removeFromSuperview]; 51 52 } 53 -(void)buttonClick{ 54 [self dismissGuide]; 55 NSLog(@"引导状态可点击"); 56 57 } 58 @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
