iphone-按下按钮时执行操作

例如，我有两个音量按钮（+和-）

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我如何实现一些功能，例如，当按住+按钮时，它会以一定的间隔递增音量？（我只感兴趣的是在按下按钮时间隔一段时间做一个动作）

首先添加按钮

 UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self  action:@selector(increase)forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Show View" forState:UIControlStateNormal];
    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    [view addSubview:button];

然后写下Button press的方法

-(void)increase
{
//increase the volume here
}

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如果不是您想要的解决方案，则意味着添加注释…

首先添加按钮

 UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [button addTarget:self  action:@selector(increase)forControlEvents:UIControlEventTouchDown];
    [button setTitle:@"Show View" forState:UIControlStateNormal];
    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    [view addSubview:button];

然后写下Button press的方法

-(void)increase
{
//increase the volume here
}

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如果不是您想要的解决方案，则意味着添加注释…

假设您有两个按钮，一个用于-另一个用于+

您可以将间隔信息存储在按钮的标记字段中

在按钮标签属性中安装间隔值。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

使用按钮添加操作。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

执行下面的buttonEvent方法。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

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假设您有两个按钮，一个用于-，另一个用于+

您可以将间隔信息存储在按钮的标记字段中

在按钮标签属性中安装间隔值。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

使用按钮添加操作。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

执行下面的buttonEvent方法。

myPulseButton.tag = 10;
myMinusButton.tag = 10;

[myPulseButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside]; 

[myMinusButton addTarget:self action:@selector(buttonEvent:) forControlEvents:UIControlEventTouchUpInside];

-(void) buttonEvent:(id) sender
{
    UIButton* myButton = (UIButton*) sender;
    if(myButton == myPulseButton)
    {
      [self increaseVolume:myPulseButton.tag];
    }
    else if(myButton == myMinusButton)
    { 
      [self decreaseVolume:myMinusButton.tag];
    }
}

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您可以使用计时器来完成此操作。触摸启动时启动计时器。如果计时器过期，请增大或减小音量，然后重新启动计时器。触摸结束后，取消计时器。

您可以使用计时器进行此操作。触摸启动时启动计时器。如果计时器过期，请增大或减小音量，然后重新启动计时器。触摸结束后，取消计时器