objective-c - 如何在 UITextView 上获取点击坐标

Question

我正在使用这种方法，但它仅适用于我的 UIView 子类。如果我点击 UITextView 或 UIButton 或任何其他对象，它不会显示坐标。如何获取 UITextView 上的点击坐标？为什么会这样？

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

Answer 1

在 ViewDidLoad 方法中添加此代码，

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapRecognized:)];
singleTap.numberOfTapsRequired = 1;
[self.textView addGestureRecognizer:singleTap];

实现上述方法

-(void)singleTapRecognized:(id)sender{
    CGPoint tapPoint = [sender locationInView:self.textView];
    NSLog(@"Coordinates: (%f,%f)", tapPoint.x, tapPoint.y);
}