点击手势demo

最新推荐文章于 2021-05-29 01:24:45 发布

骁驰

最新推荐文章于 2021-05-29 01:24:45 发布

阅读量608

点赞数

CC 4.0 BY-SA版权

分类专栏： iOS学习随记文章标签：点击手势

本文链接：https://blog.youkuaiyun.com/u010606986/article/details/41596327

iOS学习随记专栏收录该内容

20 篇文章

订阅专栏

本文介绍了一个名为UIGestureViewController的iOS视图控制器类实现，该控制器通过添加手势识别器来响应不同数量的点击事件，并在界面上显示点击次数及触碰的手指数量。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

<span style="background-color: rgb(153, 153, 255);">//
//  UIGestureViewController.m
//  LJEExcise
//
//  Created by xiaoyao on 14/11/29.
//  Copyright (c) 2014年 lijien. All rights reserved.
//

#import "UIGestureViewController.h"

#define kLABELFRAME (CGRectMake(20, 150, 200, 50))
#define kVIEWFRAME (CGRectMake(20, 220, 200, 80))

@interface UIGestureViewController () {
  UILabel *_touchLabel;
  UIView *_touchView;
}
@end

@implementation UIGestureViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  _touchLabel = [[UILabel alloc] initWithFrame:kLABELFRAME];
  _touchLabel.backgroundColor = [UIColor blueColor];
  _touchLabel.tag = 9999;
  _touchLabel.textColor = [UIColor redColor];
  // 当UI控件不允许用户使用交互属性的时候应当打开其交互
  _touchLabel.userInteractionEnabled = YES;
  // 是否支持多点触碰
  _touchLabel.multipleTouchEnabled = YES;
  [self.view addSubview:_touchLabel];
  
  _touchView = [[UIView alloc] initWithFrame:kVIEWFRAME];
  _touchView.backgroundColor = [UIColor purpleColor];
  [self.view addSubview:_touchView];
  
  for (int i = 1; i < 6; i++) {
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                          action:@selector(handleTap:)];
    // 连续点击的次数
    tap.numberOfTapsRequired = i;
    // 允许两个手指的触碰
    tap.numberOfTouchesRequired = 1;
    [_touchView addGestureRecognizer:tap];
  }
}

- (void)handleTap:(UITapGestureRecognizer *)tap {
  // 用户的第几个手指触碰
  NSUInteger touchNum = tap.numberOfTouches;
  NSUInteger tapNum = tap.numberOfTapsRequired;
  _touchLabel.text = [NSString stringWithFormat:@"tapNum: %lu touchNum: %lu",tapNum, touchNum];
  [_touchLabel performSelector:@selector(setText:) withObject:nil afterDelay:2];
}

- (void)setText:(UILabel *)label {
  [_touchLabel setText:@"aaa"];
  
  return;
}
@end
</span>