Change UIViewController to UIView - iphone

Question

I am new at iOS development,
I want to draw a line in my app, i created a simple viewbased application,
I came to know that for drawing a line we require - (void)drawRect:(CGRect)rect method, but this method is available in UIView not in
UIViewCOntroller
How to change my class to UIView ?
Here is my code snippet,
// .h file
#interface Financial_Calc : UIViewController{
UIButton *firstBtn,*secondBtn;
}
#end
//.m file
#implementation Financial_CalculatorViewController
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)drawRect:(CGRect)rect {
NSLog(#"drawRect");
}
#end
Any help will be appreciated

Answer 1

You need to keep the view controller you have, and make a custom view class for it to control.
Choose File > New File…
From iOS, Cocoa Touch, Choose 'Objective-C Class', Click Next
Name your class 'MyView' (or anything you like, the convention is to have view at the end)
Make your class a subclass of UIView (type UIView in the 'subclass of' field)
Click next, choose a location to create the file (anywhere in your project's folder is fine).
Add your custom drawing code to drawRect: in MyView.m
In your view controller's Xib file, select the view.
Choose View > Utilities > Show Identity Inspector
In the 'Custom Class' field, change the class field from 'UIView' to 'MyView'
Build & run - your view controller is now controlling your custom view.
It's also possible to do this without using the user interface Xib, but this should get you going.

Answer 2

FYI: you cannot change UIViewController to UIView. One way to do is, create a new subclass of UIView (lets say called CustomUIView). there do your coding of draw rect. and in your ViewController.m in viewDidLoad method create an object of CustomUIView Class (lets say customUIView) and do this
[self.view addSubView:customUIView];