Question

I have two classes A and B.

Class A contains a UIView named myView and also a method MyMethod to set the position of the myView.

-(void)MyMethod:(NSString *)justCheck
{   
[self.view addSubview:myView];
[self.view bringSubviewToFront:myView];

CGRect mframe = [myView frame];

NSLog(@"------------> MyMethod Called = %@",justCheck); 


  // EDIT: the following NSLogs are added later--------------------

NSLog(@"------------> MyMethod Called:mframe:x = %g",mframe.origin.x);      //0

NSLog(@"------------> MyMethod Called:mframe:y = %g",mframe.origin.y);      //42

NSLog(@"------------> MyMethod Called:mframe:H = %g",mframe.size.height);   //317

NSLog(@"------------> MyMethod Called:mframe:W = %g",mframe.size.width);    //320


  //---------------------------------------------------------------

mframe.origin.y = 42; 

[myView setFrame:mframe];
}

When a button in the class A named buttonOfA calls this MyMethod, it works perfectly and I can see the myView in position 42.
code is as below,

-(IBAction)buttonOfA:(id)sender 
{
[self MyMethod:@"I am A"];
}

But, when the button of class B named buttonOfB tries to call this method, NSLog works but I cannot see the myView in position 42. Code as below,

  -(IBAction)buttonOfB:(id)sender 
{
[objOfA MyMethod:@"I am B"];  //objOfA is the object of class A
}

What is happening here??
I have been trying hard to figure out the problem, But I couldn’t. Plz help me.

Thanx 🙂

EDIT: four NSLogs are added in myMethod()

Answer 1

Make sure the myView instance variable in the class A object is initialized and added to a super view when class B calls MyMethod: on it. Otherwise setting the frame won’t have any effect.