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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
A single action for multiple iPad / iPhone buttons, and animation

How do we add animation to an iPad / iPhone app? How do we share one action routine across a whole lot of similar buttons? These are amongst the questions that we looked at, and answered, in the little demonstration below during today's iOS / iPad / iPhone "Geekfest" ;-).


Here is the header file ViewController.h:

  #import
 
  @interface ViewController : UIViewController{
    UIButton *goUp;
    UIButton *goDown;
    UIImageView *crewe;
  }
 
  @property(nonatomic, retain) IBOutlet UIButton *goUp;
  @property(nonatomic, retain) IBOutlet UIButton *goDown;
  @property(nonatomic, retain) IBOutlet UIImageView *crewe;
 
  -(IBAction)movingImage:(id)sender;
@end


And the changes to ViewController.m:

  @synthesize goUp;
  @synthesize goDown;
  @synthesize crewe;


With the added action routine:

  -(IBAction)movingImage:(id)sender {
   
    if (sender == goUp) {
   
    [UIView beginAnimations:@"moveitup" context:NULL];
    [crewe setFrame:CGRectOffset([crewe frame],0,-400)];
    [UIView commitAnimations];
   
    } else {
 
    [UIView beginAnimations:@"moveitdown" context:NULL];
    [UIView setAnimationDuration:5.0];
     // Should really have used animateWithDuration
    [crewe setFrame:CGRectOffset([crewe frame],0,400)];
    [UIView commitAnimations];
   
    }
  }


Results:






(written 2012-03-11)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
C501 - C and C based languages - Objective C, XCode and iOS Resources
  [3594] Back to Uni - (2012-01-26)
  [3596] Want to learn iPad and iPhone programming? Come along and learn with me for free. - (2012-01-28)
  [3599] Seeing how Melksham has changed over the years, via an iPad - (2012-01-30)
  [3648] iPad and iPhone programming - our seminar weekend with Xcode - (2012-03-11)
  [3650] Possessive Regular Expression Matching - Perl, Objective C and some other languages - (2012-03-12)


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Some other Articles
What is happening in 59 days time in Melksham?
A Complete makefile example
Makefile - some basics, and a demonstration
A single action for multiple iPad / iPhone buttons, and animation
Along the brook - East Melksham to Melksham
Exploring Melksham with a film maker
Keeping our hotel looking like new, by using our gained experience
The way of the Prioress - Melksham history pictured today
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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