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POChecking if the UIPickerView is shown or hidden? The *if* conditions?
 

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  1. POChecking if the UIPickerView is shown or hidden? The *if* conditions?
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    <p>I have a little problem with my UIPickerView animation. I did set up the animation so when I click a button the UIPickerView will slide up and after another click it will slide down. But I hit the problem on <em>if</em>. I tried to set up a new settings bool and set it's value after each animation, so the <em>if</em> was just checking for the bool. I'm not sure if I did explained it well, but maybe you get the idea from the code. But unfortunately it's not working... Any ideas?</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; settings = [NSUserDefaults standardUserDefaults]; [settings setBool:NO forKey:@"pickerShown"]; [settings synchronize]; } - (IBAction)showPicker:(id)sender { CGRect rect = countryPicker.frame; CGPoint origin = CGPointMake(0, 510); // Some off-screen y-offset here. rect.origin = origin; countryPicker.frame = rect; if ([settings boolForKey:@"pickerShown"] == YES) { // Perform transform to slide it off the screen. [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.5]; countryPicker.transform = CGAffineTransformMakeTranslation(0, -0); // Offset. [UIView commitAnimations]; [settings setBool:NO forKey:@"pickerShown"]; [settings synchronize]; } else if ([settings boolForKey:@"pickerShown"] == NO) { // Perform transform to slide it onto the screen. [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.5]; countryPicker.transform = CGAffineTransformMakeTranslation(0, -266); // Offset. [UIView commitAnimations]; [settings setBool:YES forKey:@"pickerShown"]; [settings synchronize]; } } </code></pre> <p>EDIT:</p> <p>Just found the solution... If anyone's interested - here it is:</p> <p>The h. file:</p> <pre><code>. . . { BOOL pickerShown; } . . . </code></pre> <p>The .m file:</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; CGRect rect = countryPicker.frame; CGPoint origin = CGPointMake(0, 510); // Some off-screen y-offset here. rect.origin = origin; countryPicker.frame = rect; pickerShown = NO; } - (IBAction)showPicker:(id)sender { if (pickerShown == NO) { // Perform transform to slide it onto the screen. [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1]; //[UIView setAnimationDidStopSelector:@selector(hidePicker)]; countryPicker.transform = CGAffineTransformMakeTranslation(0, 0); // Offset. [UIView commitAnimations]; [self performSelector:@selector(hidePicker) withObject:nil afterDelay:1]; } else if (pickerShown == YES) { //countryPicker.hidden = NO; // Perform transform to slide it onto the screen. [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1]; countryPicker.transform = CGAffineTransformMakeTranslation(0, -266); // Offset. [UIView commitAnimations]; countryPicker.hidden = NO; } } </code></pre>
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    1. USDominik Hadl
    1. USDominik Hadl
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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