Re: [iPhone-AppDev-Auditors] Digest for iphone-appdev-auditors@googlegroups.com - 2 Messages in 1 Topic

[Duane Bender]

If you followed the professor's example, you should have your GraphView as a property of your GraphViewController. If so, you can access the GraphView's dimensions directly from the controller:

self.GraphView.bounds.size.width

Or am I misreading your issue?

Duane

On Thu, Oct 4, 2012 at 11:51 PM, <iphone-appd...@googlegroups.com> wrote:

  Today's Topic Summary

Group: http://groups.google.com/group/iphone-appdev-auditors/topics

• Assignment 3 - How to pass info from VIEW to View Controller? [2 Updates]

 Assignment 3 - How to pass info from VIEW to View Controller?

zallanx <zal...@gmail.com> Oct 03 08:04PM -0700  

(copypasta from my SO post.. where no one has answered so far :*( )
 
I am having a terrible time trying to pass a bit of information from my
GraphingCalcView to myGraphingCalcViewController -_-
 
Basically, I can know about the width of my screen from my GraphingCalcView using
the functionviewSize = self.bounds.size.width / scale .. pretty simple
stuff. I'd like to pass viewSize*from the View to my Controller* (
GraphingCalcViewController), so that it can do a simple transformation (for
example, do viewSize + 1), and pass it back to to the View.
 
I have (and believe) that I set up the whole protocal/datSource/delegation
thing correct (I really just followed the example of "Happiness" presented
in the lecture), so I won't paste the details.
 
I have two equations in my protocol listed in the View's header file..maybe
something is wrong here:
 
-(float) calcResult: (GraphingView *) sender;
@optional
-(void) passingVariable: (float) variable;
 
Basically, in my *View*, I call the @optional to pass viewSize: [self.dataSource
passingVariable:viewSize] , then in my *Controller*, I set viewSize to a
Model property calledself.result so that: self.result = viewSize, and then
return the model property:
 
-(float)calcResult:(GraphingView *)sender
{
return self.result;
}
 
Now, in my *View*, when I assign a float to [self.dataSource
calcResult:self], I always get a 0, instead of any value that I passed to
it.. X_X.. I was wondering if my whole concept about passing stuff from
View to the Controller is correct, and what I am doing wrong.. Thanks for
reading!


 

Asad Khan <asadkh...@gmail.com> Oct 04 04:41PM +0500  

Can you post link to your SO post its very hard to read all text here.
 
 


 

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