iphone - 按下按钮时

Question

我如何设置一个按钮(附有 IBAction 和 UIButton)以在按下按钮时继续运行 IBAction 或函数，持续运行一个函数直到按钮松开。

我应该附加一个值(value)改变的接收器吗？

简单的问题，但我找不到答案。

Answer 1

[myButton addTarget:self action:@selector(buttonIsDown) forControlEvents:UIControlEventTouchDown];
[myButton addTarget:self action:@selector(buttonWasReleased) forControlEvents:UIControlEventTouchUpInside];


- (void)buttonIsDown
{
     //myTimer should be declared in your header file so it can be used in both of these actions.
     NSTimer *myTimer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(myRepeatingAction) userInfo:nil repeats:YES];
}

- (void)buttonWasReleased
{
     [myTimer invalidate];
     myTimer = nil;
}