I have created a scroll(width 320, height 420) in 'Interface Builder'.
and in class:
-(void)viewWillAppear:(BOOL)animated {
[scroll setContentSize:CGSizeMake(scroll.frame.size.width, 1000)];
}
but the scroll view is not scrolling?
See the print screens
http://imageshack.us/photo/my-images/832/scrollo.png
http://imageshack.us/photo/my-images/203/capturadetela20121103s2.png
http://img802.imageshack.us/img802/889/capturadetela20121103s2.png
I think maybe you have not successfully added the images or have not successfully set the scrollView's contentSize. And I suggest you to set the contentSize after you add the image view to your scrollView. viewDidLoad is good idea. Most of the time don't do much work in viewWillAppear. The view will not be shown until this method finish.
Check if you init with your scrollView with frame:
self.scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 280, 360)];
Remember also to set contentSize bigger than frame, for example:
self.scrollView.contentSize = CGSizeMake(2*280, 360);
Also add delegate in your interface:
<UIScrollViewDelegate>
And delegate it:
self.scrollView.delegate = self;
Problem resolved: "Auto layout" was on ... must to be off.
Related
I've search and found a few questions about this, but none containing an answer that worked for me.
This code centres a subview in the current view, if the device is in portrait, but not if it's landscape. How do I make the centring work in landscape?
UIView *redView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
redView.backgroundColor = [UIColor redColor];
redView.center = [self.view convertPoint:self.view.center fromView:self.view.superview];
[self.view addSubview:redView];
Rather try using
redView.center = [self.view convertPoint:self.view.center fromView:nil];
Works for me.
Note from the docs:
The view with point in its coordinate system. If view is nil, this
method instead converts from window base coordinates. Otherwise, both
view and the receiver must belong to the same UIWindow object
(should be called in viewDidAppear, not in viewDidLoad)
I have a scrollview that is subview of view, and has the subviews. The problem is this: the scrollView came with the black background (as I have set transparent) and also does not work. The scrollView is connected with an IBOutlet. I redid the XIB 2 times, what needs fixing? When I add the scrollView as subview of view:
[self.view addSubview:self.scrollView];
I get this error during runtime:
0x132b61: calll 0x132b66; CA::Layer::ensure_transaction_recursively(CA::Transaction*) + 14
EXC_BAD_ACCESS(code=2 address=0xbf7ffffc)
If I do not add it as a subview in the code, the view controller opens and the scrollview is black and does not scroll.
You are probably doing somewhere, something like:
[myScrollView addSubview:myAnotherView];
[myAnotherView addSubview:myScrollView];
which kicks an unwanted recursion. Check your code.
Check if you init with your scrollView with frame:
self.scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 280, 360)];
Remember also to set contentSize bigger than frame, for example:
self.scrollView.contentSize = CGSizeMake(2*280, 360);
Also add delegate in your interface:
<UIScrollViewDelegate>
And delegate it:
self.scrollView.delegate = self;
In my situation I had a UIView that was receiving the same error. In my case I had forgotten to create an IBOutlet for my view. Once I did this, the error went away.
I want to change the titleView of navigationBar with a regular text field. Then I want to set the textField size to fill the old "normal" titleView.
I can't seem to be able to do this in storyBoard. Dragging a text Field to the place where the navigation title View is doesn't work.
So I added stuff at
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
PO(self.navigationItem.titleView);
CGRect theFrame= self.navigationItem.titleView.frame;
self.navigationItem.titleView=self.searchBar;
//self.searchBar.frame = theFrame;
while (false);
...
It's working with one cached. That PO is a macro that print the content of the object. Turns out at viewDidAppear, self.navigationItem.titleView is null.
So while I can display the searchBar, I cannot make the searchBar "fill" it's space because I do not know the space is.
I prefer not to hard code it because you know, things may change in the future.
So what should I do?
I once saw codes where rather than setting the self.navigationItem.titleView, you would simply add subview to it. The problem with this approach even on viewDidAppear, self.navigationItem.titleView is 0.
I added these codes:
CGRect theFrame= self.navigationItem.titleView.frame;
CGRect theFrame2 = self.searchBar.frame;
CGRect theFrame3 = self.navigationController.navigationItem.titleView.frame;
And, I do not know how to nslog structure value, however, theFrame and theFrame3 are all 0
You can try this inside viewWillAppear:
UIView *customTitleView = [[UIView alloc]initWithFrame:CGRectMake((320-210)/2, 0, 210, 50)];
customTitleView.backgroundColor = [UIColor clearColor];
//create your UITextField or UILabel or other view and add as subview of customTitleView
self.navigationItem.titleView = customTitleView;
I've customized background of navigation bar in my RootViewController (just part of code)
[navBar insertSubview:customBack atIndex:0];
I push detailViewController and add activity indicator as a rightBarButtonItem
UIActivityIndicatorView *actInd = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
actInd.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
self.activityIndicator = actInd;
[actInd release];
UIBarButtonItem * barButton = [[UIBarButtonItem alloc] initWithCustomView:self.activityIndicator];
[self.navigationItem setRightBarButtonItem:barButton];
[barButton release];
The problem is that the indicator is not visible but without customized background it works OK.
You can better change your navigationBar Background I think. Create a subclass of UINavigationBar and add:
- (void)drawRect:(CGRect)rect {
UIImage * image = [UIImage imageNamed:#"MyNavigationBarBackground.png"];
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextScaleCTM(ctx, 1.0, -1.0); // Otherwise the image is drawn upside-down
CGContextDrawTiledImage(ctx, CGRectMake(0, 0, image.size.width, image.size.height), image.CGImage);
}
I do that and I never add a problem with any button :)
Zoleas has the right idea. If you don't or can't use a subclass, I think your problem is that you are adding your subview at index 0 so it is on top of the other views in the navigation bar, it is probably hiding your buttons.
set rightBarButtonItem with following way
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Exit" style:UIBarButtonItemStylePlain target:self action:#selector(cancel)];
Try this and also check the position of background
The activity indicator is there its just not being activated. Try animating it like this:
[actInd startAnimating];
Or if you want to keep it visible set the hideWhenStopped property like this:
actInd.hidesWhenStopped = NO;
Did you try to change the origin from the UIActivityIndicatorView?
Or creating it inside an UIView and add this UIView to the UIBarButtonItem.
I think the problem can be the frame from the element.
By this way you can resolve the problem:
Create activity indicator and add in a view1
Now this view1 add or create navigation bar with the help of this view1. Now when view1 is visible automatically you will be able to see the loading indicator.
Just wild try on this.
When using UISplitViewController on the iPad there's a black vertical divider line between the root and detail view. Is there any way to remove this line?
Thanks
Excellent answer by #bteapot. I tested this and it works, even gets rid of the line between master/detail nav bars.
You can do this in storyboard by adding the "gutterWidth" key path and the value 0 to the USplitViewController runtime attributes.
Actuly I have some modification to answer of (Dylan)'s answer
in the appDelegate we need to add image in spliteview controller rather then window
self.splitViewController.view.opaque = NO;
imgView = [[UIImageView alloc] initWithImage:
[UIImage imageNamed:#"FullNavBar.png"]];
[imgView setFrame:CGRectMake(0, 0, 1024, 44)];
[[self.splitViewController view] insertSubview:imgView atIndex:0];
[[self.splitViewController view] setBackgroundColor:[UIColor clearColor]];
here self is object of AppDelegate.
now Apply the answer of this thread : iPhoneOS SDK - Remove Corner Rounding from views (iPad problem) answer by (abs)
edit in above post's answer is
-(void) fixRoundedSplitViewCorner {
[self explode:[[UIApplication sharedApplication] keyWindow] level:0];
}
-(void) explode:(id)aView level:(int)level
{
if ([aView isKindOfClass:[UIImageView class]]) {
UIImageView* roundedCornerImage = (UIImageView*)aView;
roundedCornerImage.hidden = YES;
}
if (level < 2) {
for (UIView *subview in [aView subviews]) {
[self explode:subview level:(level + 1)];
}
}
imgView.hidden = FALSE;
}
** make imgView.hidden to FALSE
declare imgView to the AppDelegate.h file**
and dont forget to call this
-(void)didRotateFromInterfaceOrientation:
UIInterfaceOrientation)fromInterfaceOrientation
{
[yourAppDelegate performSelector:#selector(fixRoundedSplitViewCorner)
withObject:NULL afterDelay:0];
}
chintan adatiya answer covers only the corners and the navigation bar, but I found an trick how to cover the line between the Master and the Detail view.
It is not nice but it works like a charm.
First create an image which is 1 px wide and 704 pixels high.
In the didFinishLaunchingWithOptions add the following code:
UIView *coverView = [[UIView alloc] initWithFrame:CGRectMake(320, 44, 1, 704)];
[coverView setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:#"divider_cover.png"]]];
[splitViewController.view addSubview:coverView];
And done.
When you want a background image which is continues create 3 images:
Master: width: 320, height: 704
Detail: width: 703, height: 704
Divider:width: 1, height: 704
First post here, hi everyone.
I discovered how to do it accidentally... when I tried to find why I had LOST the divider line. Here's how to hide it, if you're still interested:
1) In your Detail (right-side) view, make sure you have a subview that spans the whole view.
2) Offset this subview view to (-1, 0).
3) Make sure that the Detail View has its "Clip Subviews" option unchecked.
Voilà, enjoy.
You can mostly get rid of it by setting another image behind it in the main window's views. This is from the app delegate didFinishLaunchingWithOptions
// Add the split view controller's view to the window and display.
splitViewController.view.opaque = NO;
splitViewController.view.backgroundColor = [UIColor clearColor];
[window addSubview:splitViewController.view];
[window insertSubview:bgImageView belowSubview:splitViewController.view];
[window makeKeyAndVisible];
But it still leaves two visual artifacts at the top and the bottom that appear to be custom drawn by the splitviewcontroller.
Interestingly, In the app that I'm working on I want a black background color for both views in the UISplitViewController. I'd like to change the color of the divider line to white (so that you can see it). Making both background colors black is one way to get rid of (make invisible) the dividing line but that's probably not a solution for most people.
Tested on iOS10 (probably will work on iOS9 too).
splitviewController.view.backgroundColor = UIColor.white
it removes divider. Apparently divider is just a gap between master and detail container.
I looked around for a while, and came to the conclusion that theres no way to do this, other than to create your own custom split view.
Try the MGSplitViewController by Matt Gammell
http://mattgemmell.com/2010/07/31/mgsplitviewcontroller-for-ipad
I may be late here, but I DO have a solution that works. It even works for the iOS 8+ splitViewController.preferredDisplayMode = UISplitViewControllerDisplayModeAllVisible; and seamlessly slides in and out when you press the Full Screen toggle button.
Here is the trick :
first Subclass UISplitViewController.m
In the header add the follwing :
#property (strong, nonatomic) UIView *fakeNavBarBGView;
In the viewDidLoad method add the following code :
CGFloat fakeNavBarWidth = 321; // It is important to have it span the width of the master view + 1 because it will not move when the split view slides it's subviews (master and detail)
CGFloat navbarHeight = self.navigationController.navigationBar.frame.size.height + 20;
self.fakeNavBarBGView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, fakeNavBarWidth, navbarHeight)];
self.fakeNavBarBGView.backgroundColor = [UIColor redColor];
// Add Fake navbar to back of view
[self.view insertSubview:self.fakeNavBarBGView atIndex:0];
// SplitView Controller
UISplitViewController *splitViewController = self;
DetailViewController *detailVC = [navigationController.viewControllers lastObject];
detailVC.fakeNavBarSubView = self.fakeNavBarBGView;
detailVC.SVView = self.view;
In the DetailViewController.h add the following :
#property (strong, nonatomic) UIView *SVView;
#property (strong, nonatomic) UIView *fakeNavBarSubView;
Now here is the final trick : in the DetailViewController.m, add the following in the viewDidLoad method (called every time you click the Master table) :
[self.SVView sendSubviewToBack:self.fakeNavBarSubView];
[self.SVView bringSubviewToFront:self.view];
Run it and watch the magic ;-)
Private API (can cause App Store rejection):
[splitViewController setValue:#0.0 forKey:#"gutterWidth"];
I did this accidentally by setting the backgroundColor property of the first viewController's view - possibly to clearColor, I don't remember now.
UIManager.put("SplitPaneDivider.draggingColor", new Color(255, 255, 255, 0));