iOS开发添加向上下左右四个方向的手势以及获取触摸点的坐标

Swift手势识别与视图动画

最新推荐文章于 2025-11-07 15:03:14 发布

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本文介绍如何在Swift中使用UISwipeGestureRecognizer实现上、下、左、右四个方向的手势识别，并通过UIKit进行视图动画操作。文章还展示了如何在触摸开始、移动和结束时调整视图位置。

#import "ViewController.h"

@interface ViewController ()

@property (nonatomic, strong, nullable) UISwipeGestureRecognizer *upGestureRecognizer;
@property (nonatomic, strong, nullable) UISwipeGestureRecognizer *downGestureRecognizer;
@property (nonatomic, strong, nullable) UISwipeGestureRecognizer *leftGestureRecognizer;
@property (nonatomic, strong, nullable) UISwipeGestureRecognizer *rightGestureRecognizer;

@property (nonatomic, assign) CGFloat coordinateX;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor colorWithRed:0.744 green:0.730 blue:1.000 alpha:1.000];
    
    self.upGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
    [self.upGestureRecognizer addTarget:self action:@selector(upGestureRecognizer:)];
    self.upGestureRecognizer.direction = UISwipeGestureRecognizerDirectionUp;
    [self.view addGestureRecognizer:self.upGestureRecognizer];
    
    self.downGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
    [self.downGestureRecognizer addTarget:self action:@selector(downGestureRecognizer:)];
    self.downGestureRecognizer.direction = UISwipeGestureRecognizerDirectionDown;
    [self.view addGestureRecognizer:self.downGestureRecognizer];
    
    self.leftGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
    [self.leftGestureRecognizer addTarget:self action:@selector(leftGestureRecognizer:)];
    self.leftGestureRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
    [self.view addGestureRecognizer:self.leftGestureRecognizer];
    
    self.rightGestureRecognizer = [[UISwipeGestureRecognizer alloc] init];
    [self.rightGestureRecognizer addTarget:self action:@selector(rightGestureRecognizer:)];
    self.rightGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
    [self.view addGestureRecognizer:self.rightGestureRecognizer];
}
- (void)upGestureRecognizer:(UISwipeGestureRecognizer *)gestureRecognizer {
    NSLog(@"上");
}
- (void)downGestureRecognizer:(UISwipeGestureRecognizer *)gestureRecognizer {
    NSLog(@"下");
}
- (void)leftGestureRecognizer:(UISwipeGestureRecognizer *)gestureRecognizer {
    [UIView animateWithDuration:0.5 animations:^{
        self.view.frame = CGRectMake(0, 0, 375, 667);
    }];
}
- (void)rightGestureRecognizer:(UISwipeGestureRecognizer *)gestureRecognizer {
    [UIView animateWithDuration:0.5 animations:^{
        self.view.frame = CGRectMake(300, 0, 375, 667);
    }];
}


- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    [UIView animateWithDuration:0.5 animations:^{
        
        self.view.frame = CGRectMake(0, 0, 375, 667);
        
    }];
    
    UITouch *touch = [touches anyObject];
    
    CGPoint touchPoint = [touch locationInView:self.view];
    
    NSLog(@"%f==%f",touchPoint.x,touchPoint.y);
    
    self.coordinateX = touchPoint.x;
    
}
- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    UITouch *touch = [touches anyObject];
    
    CGPoint touchPoint = [touch locationInView:self.view];
    
    NSLog(@"%f==%f",touchPoint.x,touchPoint.y);
    
    if (touchPoint.x > self.coordinateX) {
        
        [UIView animateWithDuration:0.1 animations:^{
            
            self.view.frame = CGRectMake(touchPoint.x - self.coordinateX, 0, 375, 667);
            
        }];
        
    }
    
}
- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    
    UITouch *touch = [touches anyObject];
    
    CGPoint touchPoint = [touch locationInView:self.view];
    
    NSLog(@"%f==%f",touchPoint.x,touchPoint.y);
    
    if (touchPoint.x > self.coordinateX) {
        
        [UIView animateWithDuration:0.5 animations:^{
            
            self.view.frame = CGRectMake(280, 0, 375, 667);
            
        }];
        
    }
    
}