iphone - 计数按钮事件

Question

如何对按钮单击事件执行两项操作。例如，单击一次我执行一项操作，连续两次单击我必须执行另一个事件。

Answer 1

UIImageView在.上使用双击手势..... 不要忘记将UIImageView'sUserInteractionEnabled 设置为TRUE。

ImageView.userInteractionEnabled = YES;

Answer 2

将初始按钮标签设置为 0

然后

-(IBAction)yourBtnPress:(id)sender
{
    UIButton *btn = (UIButton*)sender;
    if (btn.tag==0)
    {
        btn.tag=1;
        //singlePress
    }
    else if(btn.tag==1)
    {
        //double tap

        //if you want other action then change tag
        btn.tag=2;

        //if you restart task then
        btn.tag=0;
    }

}

Answer 3

这里tapCount是在.h 文件int中声明的变量

- (void)viewDidLoad
{
  tapCount = 0; // Count tap on Slider 

 UITapGestureRecognizer *gr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(ButtonTap:)];
    [button addGestureRecognizer:gr];
    
}

 - (void)ButtonTap:(UIGestureRecognizer *)g 
    {
/////////////// For TapCount////////////

        tapCount = tapCount + 1;
        NSLog(@"Tap Count -- %d",tapCount);

/////////////// For TapCount////////////



if (tapCount == 1)
{

       // code for first tap
}
else if (tapCount == 2)
{
      // Code for second tap
}
    
}

Answer 4

您可以使用条件setAction:

如果单击然后调用selectorSingleTouch。

否则打电话selectorDoubleTouch。

//这不是编译器检查...至少你可以从中得到一些想法

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

UITapGestureRecognizer *doubleTap=[[UITapGestureRecognizer alloc] initWithTarget: self action:@selector(doDoubleTap)];
doubleTap.numberOfTapsRequired = 2; 
[self.view addGestureRecognizer:doubleTap];