是否可以获得触摸的x和y坐标？

Question

是否有可能获得触摸的x和y坐标？如果是这样,请有人提供一个非常简单的示例,其中坐标刚刚记录到控制台.

Answer 1

使用touchesBegan事件

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint touchPoint = [touch locationInView:self.view];
    NSLog(@"Touch x : %f y : %f", touchPoint.x, touchPoint.y);
}

触摸开始时会触发此事件.

使用手势

在viewDidLoad:Method中注册您的UITapGestureRecognizer

- (void)viewDidLoad {
    [super viewDidLoad];
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapGestureRecognizer:)];
    [self.view setUserInteractionEnabled:YES];
    [self.view addGestureRecognizer:tapGesture];
}

设置tapGestureRecognizer功能

// Tap GestureRecognizer function
- (void)tapGestureRecognizer:(UIGestureRecognizer *)recognizer {
    CGPoint tappedPoint = [recognizer locationInView:self.view];
    CGFloat xCoordinate = tappedPoint.x;
    CGFloat yCoordinate = tappedPoint.y;

    NSLog(@"Touch Using UITapGestureRecognizer x : %f y : %f", xCoordinate, yCoordinate);
}

示例项目