iOS Help with UISwitch affecting accelerometer

[mandude]

ok so i got this UISwitch that when it is set to ON i would like it that if the user shakes the device... something happens like a label appearing. When it is set to off if you shake the device then nothing happens simple enough not for me though haha here's code:


header:

#define kAccelerationThreshold 2.2
#define kUpdateInterval (1.0f/10f)

@interface............{
UISwitch *switch;
UILabel *shookDeviceLabel;
}
@property (nonatomic, retain) IBOutlet UISwitch *switch;
@property (nonatomic, reatain) IBOutlet UILabel *shookDeviceLabel;
-(IBAction)switchChanged:(id)sender;
@end

main file:

@synthesize switch;
@synthesize shookDeviceLabel;

-(IBAction)switchChanged:(id)sender {
if (switch.on = YES) {
- (void)accelerometer:(UIAccelerometer *)accelerometer 
        didAccelerate:(UIAcceleration *)acceleration {
if (acceleration.x > kAccelerationThreshold 
            || acceleration.y > kAccelerationThreshold
            || acceleration.z > kAccelerationThreshold) {
shookDeviceLabel.hidden = NO;
}
}


//* pretty sure this is all completely wrong but help would be nice.

 

[dejo]

[B]-(IBAction)switchChanged:(id)sender[/B] {
if (switch.on = YES) {
[B]- (void)accelerometer:(UIAccelerometer *)accelerometer 
        didAccelerate:(UIAcceleration *)acceleration[/B] {

You can't define one method (accelerometer:didAccelerate:) inside another (switchChanged:). Step away from from the real code and go learn the basics of Objective-C.

 

[mandude]

i asked for help not a scummy snob answer

 

[KoolStar]

What you would want to do is to start the accelerometer if the switch is on and set it to nil if the switch is off such as below.
Header

UISwitch *onOff;
	UILabel *shakeStir;
	
	UIAccelerometer *accelerometer;
	
}
@property(nonatomic, retain) IBOutlet UISwitch *onOff;
@property(nonatomic, retain) IBOutlet UILabel *shakeStir;

@property(nonatomic, retain) UIAccelerometer *accelerometer;

- (IBAction)switchChange;

MAIN

- (void)loadView {
	shakeStir.hidden = YES;
}

- (IBAction)switchChange{
	if (onOff.on == YES){
		self.accelerometer = [UIAccelerometer sharedAccelerometer];
		self.accelerometer.updateInterval = .1;
		self.accelerometer.delegate = self;
	}
	else {
		shakeStir.hidden = YES;
		self.accelerometer = nil;
	}
}

- (void)accelerometer:(UIAccelerometer *)accelerometer 
        didAccelerate:(UIAcceleration *)acceleration {
	if (acceleration.x > kAccelerationThreshold 
		|| acceleration.y > kAccelerationThreshold
		|| acceleration.z > kAccelerationThreshold) {
		shakeStir.hidden = NO;
	}
}

 

[dejo]

i asked for help not a scummy snob answer

I was trying to help. If you think it was a snob answer, I'm sorry for you. If you just want code you can copy-and-paste (my apologies, KoolStar), you won't get any more help from me. Good luck, though.

 

[KoolStar]

No problem, that was out of a guide basically 4 links down on google. People just need to search google better.