ios - 检测 Xcode 中某个对象的触摸

Question

此伪代码的 Xcode 代码是什么？

if ([Any UIPickerView in my ViewController isTouched]) {
    [AnyUIView setHidden:NO];
}

if ([Any UIPickerView in my ViewController is__NOT__Touched__Anymore__]) {
    [AnyUIView setHidden:YES];
}

尝试使用-(void)touchesBegan方法，它检测触摸，但我无法使其特定于对象。谢谢

附言我想在触摸 UIPickerView 时在显示屏上显示提示。

Answer 1

这只是我的想法......但你应该能够明白......

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [super touchesBegan:touches withEvent:event];
    UITouch *touch = [touches anyObject];
    if ([touch.view isKindOfClass: UIPickerView.class]) {
         //your touch was in a uipickerview ... do whatever you have to do
    }
}

..并对 touchesEnded:withEvent:

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