iPhone slider volume controller to another controller

Question

I'm new in objective-c, I created a firstcontroller which play a song: [mysong play] also create a slider control of volume: mysong.volume=slider.value

It works fine, and I create another view controller remoteController with a play button and slider to control firstcontroller to play the song, I can play the song but how can I pass the slider value to control the volume, thank you someone can enlighten me.

Answer 1

The question is not very clearly explained but I'd say you can add a property to your FirstController class that exposes the volume value. Something like this:

@interface FirstController : ...
{
    float _level;
}

@property (nonatomic, assign) float volumeLevel;
@end

@implementation FirstController
@synthesize volumeLevel = _level;

- (id)init {
    ...
    _level = -1;
    ...
}

- (void)setVolumeLevel:(float)level {
    _level = level;
    <# update slider volume here #>
}

- (float)volumeLevel {
    if (_level < 0) {
       /* first access */
        _level = <# read the volume from the slider #>
    } 
    return _level;
}
@end

If you show us some actual code we can taylor the answer to your needs.