I have a UIView subclass with a drawRect method. My viewController uses this subclass (I just set it in the xib), and so UIView draws a rectangle to the screen fine.
Now, I'd like to send a bunch CGRects stored in my viewController to my UIView drawRect method.
I'm unsure how to pass them. Any ideas? Thanks.
You can add properties to your UIView subclass to store the CGRect's, set them from your UIViewController then call [self.view setNeedsDisplay]; from your UIViewController.
Related
I have 2 UIViews both with a bit off code in them.
I can subclass one to a UIViewController like this self.view addSubView:_msgView];
_msgView being a UIView.
Now _msgView is a Plain UIView that has a 0.7 Alpha to lay over the UIViewController.
now I have another UIView called menuButtons and I want to put that on top of the _msgView.
I was thinking I could use [_msgView addSubView:_menuButton]; but that does not work and gives a warning
Incompatible pointer types sending 'MenuButtons *__strong' to parameter of type 'UIView *'
How do I put a UIView on top of another UIView?
//EDITS:
#import <UIKit/UIKit.h>
#import "SlideMessageView.h"
#import "definitions.h"
#interface MenuButtons : UIView
{
UIButton *onBack;
UIButton *onForward;
UIButton *onRefresh;
UIButton *onHome;
UIButton *onSafari;
UIButton *onChrome;
UIButton *onPocketReader;
UIButton *onSavePDF;
UIButton *onPrint;
UIButton *onShare;
SlideMessageView *msgView;
BOOL viewVisible;
}
The UIButtons have their #properties set below that.
you do 1 thing.. if u are generating both the views through code then add both views in self.view itself and set their frames separately.
i.e if 1st view is at top set the frame msgview.frame = CGRectMake(0,0,320,100);
ans for second view someview.frame = CGRectMake(0,100,320,200);
I have a program with a UIViewController as a Root UIView.
I have added a subView to it.
When I give WillAnimateRotation to the main and the subView.
Only the Root UIViewController WillAnimateRotation is called, but not the subview WillAnimateRotation.
Any solution for it???
The simplest solution would be pass the message along from your root UIViewController to the UIViewController of your subview:
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
// you can do some extra stuff here if you like
[_mySubviewsViewController willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];
}
Remember that this method only applies to UIViewController not UIView.
I have created an UIView which has several controllers , is there any possible way to add this view in UIPopoverController because UIPopoverController just support ViewController !
Create a UIViewController and assign your UIView to be it's .view property. Then you can pass it along to the UIPopoverController while creating it.
If I have a view (mainView) in which I have added subViews. How do I get to subviews instance to mainView ?
I have a button in those subviews which when pressed should call a method in mainView, so I tried:
[myButton addTarget:self.presentingViewController
action:#selector(myMethod:)
forControlerEvents:UIControletcetc];
and
[myButton addTarget:self.parentViewController action:#selector....];
I read that parentViewController now returns nil in iOS 5, but presentingViewController doesn't seem the way to do it because its not presented modally. Its just a subview. Any hints?
Your question doesn't make it quite clear whether you are talking about views or view controllers. Use the superview property to access a view's parent.
There is generally no way to get from a view to its view controller.
It feels to me that you're trying to let your views know about objects beyond their scope.
If you need to notify about an event to anyone that included your view, you could use a delegate to do that.
Say:
#protocol YourClassDelegate
#optional
- (void)instanceOfYourClass:(YourClass *)instance tappedButton:(UIButton *)button;
#end
and then
#interface YourClass
#property (nonatomic, assign) id<YourClassDelegate> delegate;
#end
I hope you can take it from here, by synthesizing the property, assigning the delegate and calling the method when you need to.
I have subclassed UIView and created a NIB that controls the main logic for my application.
Hoping the view will scale nicely, I want to use it for both the iPhone and iPad versions of the app.
On the iPhone the view will cover the full screen. On the iPad the view will cover only part of the screen.
I have read that you shouldn't use UIViewControllers to control only part of the screen. So, I am trying to embed the custom UIView in the main UIViewController's view using IB.
How can this be done?
After a lot of trial and error I found a solution based on an approach explained in the following question, answered by Brian Webster.
The solution was originally suggested for a Cocoa environment. I hope it is valid in an iOS environment as well.
Create the main view controller with a NIB-file. In the NIB, the File's Owner should correspond to the class of your main view controller.
Create a custom view controller with a NIB-file. In this NIB, the File's Owner should correspond to the class of your custom view controller.
Create a custom view controller property in your main view controller class.
Create an UIView property in the main view controller class. It will hold your custom view controller's view. Define it as an IBOutlet, so it can be linked in the NIB.
Drop a UIView in your main view controller's NIB. Link it to the main view controller's view IBOutlet. It will be used as a placeholder for the custom view.
In the main view controller's viewDidLoad method, load the custom view controllers NIB, determine the custom view's frame size and copy the view in the main view controller's view.
Here is some code:
MainViewController.h
#interface MainViewController : UIViewController {
CustomViewController *customViewController;
UIView *customView;
}
#property (nonatomic, retain) CustomViewController *customViewController;
#property (nonatomic, retain) IBOutlet UIView *customView;
#end
MainViewController.m
- (void)viewDidLoad {
CustomViewController *controller = [[CustomViewController alloc] initWithNibName:#"CustomViewController" bundle:nil];
self.customViewController = controller;
[controller release];
customViewController.view.frame = customView.frame;
customViewController.view.autoresizingMask = customView.autoresizingMask;
[customView removeFromSuperview];
[self.view addSubview:customViewController.view];
self.customView = customViewController.view;
[super viewDidLoad];
}
Add an IBOutlet propertyfor your custom UIView to the UIViewController, and additional outlets for any subviews you wish to access.
Go to Interface Builder, select the "File's Owner" object in your NIB and in the Inspector go the rightmost tab set its class to match your UIViewController's class.
Connect the IBOutlet from step one on the "File's Owner" to your custom UIView.
In XCode, when you need to load your view, do something like this:
--
[[NSBundle mainBundle] loadNibNamed:#"MyNib" owner:self options:0];
self.myCustomView.frame=self.view.bounds; // make view fill screen - customize as necessary
[self.view addSubview:self.myCustomView];
When you load the NIB, the outlet(s) you set up in step 1 will be populated with the objects loaded from your NIB.