UILongPressGestureRecognizer 仅调用第二次

Question

这是我的问题，当我使用 UILongPressGestureRecognizer 时，它只在第二次起作用...我按 3 秒按钮，它不起作用，但第二次我按 3 秒按钮，它工作正常...一些想法？

-(IBAction)seleccionar1:(id)sender{
UILongPressGestureRecognizer *longpressGesture =[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressHandler:)];
longpressGesture.minimumPressDuration = 3;
[longpressGesture setDelegate:self];
[sender addGestureRecognizer:longpressGesture];}

-(IBAction)seleccionar2:(id)sender{
UILongPressGestureRecognizer *longpressGesture =[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressHandler:)];
longpressGesture.minimumPressDuration = 3;
[longpressGesture setDelegate:self];
[sender addGestureRecognizer:longpressGesture];}

- (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer{
if(gestureRecognizer.view==boton1)
{
    [boton1 setTitle:@"Funciona 1" forState:UIControlStateNormal];
}
if(gestureRecognizer.view==boton2)
{
    [boton2 setTitle:@"Funciona 2" forState:UIControlStateNormal];
}}

感谢所有的朋友。

此致

Answer 1

因为第一次手势没有添加到按钮，您将其添加到用户操作中..因此，将手势添加到之前的按钮，例如在 viewDidLoad 中。