I have three views : topView, middleView, bottomView.
When I clicked the button in the topView, I want to insert alpha view between topView and middleView.
but middleView and bottomView is already located by calling method [self.view addsubView:] at viewDidLoad.
So I have to change middleView and bottomView below the alpha view...
So I called method 'setFrame', but already added views didn't move to where i want to put them.
So I have to call method 'removeFromSuperView' but there is a big problem that middleView and bottomView are the master views that has multiple subviews into them...
I don't know how to solve this problem, please help me!
! middleView and bottomView, they just need to go down , moving issue is simple.
****UPDATE
My code about the issue is below :
authCodeView is alphaView
authCodeView = [[UIView alloc] initWithFrame:CGRectMake(0, topView.frame.size.height + 8, [UIScreen mainScreen].bounds.size.width, topView.frame.size.height)];
[authCodeView setBackgroundColor:[UIColor whiteColor]];
authCodeField = [[UITextField alloc] initWithFrame:CGRectMake(30, 0, authCodeView.frame.size.width - 30, authCodeView.frame.size.height)];
authCodeField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:#"인증번호 입력" attributes:#{NSForegroundColorAttributeName:tempGray}];
[authCodeView addSubview:authCodeField];
NSLog(#"%f",authCodeView.frame.origin.y+authCodeView.frame.size.height + 8);
[middleView setFrame:CGRectMake(100, authCodeView.frame.origin.y+authCodeView.frame.size.height + 8, [UIScreen mainScreen].bounds.size.width, 308.0f)];
[bottomView setFrame:CGRectMake(0, middleView.frame.origin.y+middleView.frame.size.height+8, [UIScreen mainScreen].bounds.size.width, bottomView.frame.size.height)];
[self.view addSubview:authCodeView];
[self.view addSubview:middleView];
[self.view addSubview:bottomView];
So I called method 'setFrame', but already added views didn't move to where i want to put them.
Then you passed the wrong rectangle to -setFrame:. That method changes the frame of the view, i.e. it's location and size in the coordinate system of its superview.
So I have to call method 'removeFromSuperView' but there is a big problem that middleView and bottomView are the master views that has multiple subviews
You don't need to remove a view just to change its position. You'd only need to remove it if you want to add it to some other view instead, or if you no longer want it in the superview at all. That said, it's not a problem if a view like middleView has subviews -- those will go along with middleView if you remove it from its superview, or if you change middleView's position, etc.
I don't know how to solve this problem, please help me!
When asking for help, you really need to post code that reproduces the problem you're trying to solve.
Related
I have several sub views added to a UIScrollView in the main view controller. Each sub view's view controller has its own tap recognizer. The problem is, only tapping in the starting area on the screen is recognised. After scrolling the view and tapping beyond the starting area, the tapping handler will no longer be called.
This SO post UIButton in non-visible area of UIScrollView seems to be relevant but its solution description wasn't really clear to me...
A simple report project could be found at: dropbox link
Thanks.
Please check your contentview size or setbackground color for scrollview and contentview. Contenview size is not increasing i think.
I have downloaded your project and see that the
SSubViewController *pvc = [SSubViewController controllerWithSubViewID:0];
pvc frame is out of bound
SSubViewController *pvc = [SSubViewController controllerWithSubViewID:0];
[self.scrollView addSubview:pvc.view];
[self addChildViewController:pvc];
[pvc.view setBackgroundColor:[UIColor grayColor]];
[pvc.view setFrame:CGRectMake(0, 0, 400, 200)];
[pvc didMoveToParentViewController:self];
SSubViewController *pvc1 = [SSubViewController controllerWithSubViewID:1];
[self.scrollView addSubview:pvc1.view];
[pvc1.view setBackgroundColor:[UIColor yellowColor]];
[self addChildViewController:pvc1];
[pvc1 didMoveToParentViewController:self];
[pvc1.view setFrame:CGRectMake(0, 400, 400, 200)];
Now see the Colours
As you can see Gray color, and Yellow color frame
I'm trying to implement a ScrollView, but when I put a View inside, the View looks good in the preview but it's not the same when I run the application:
http://i.stack.imgur.com/ZZfEg.jpg
And I don't know how to resize a text of the width of the view.
Without the ScrollView I can do a good structured view but when I use ScrollView I cannot get a good view, how to do ?
Code here: http://pastebin.com/LN5FySku
I think this task is very easy if you use code rather than storyboard.
Use this code..
You can do this in Storyboard as well but i prefer using code for such tasks. Hope that helped.
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 520)]; // little less than 568 to accommodate the tabBar
[scrollView setContentSize:CGSizeMake(320, 1500)];
UIView *largeView = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 320, 100)];
[scrollView addSubview:largeView];
[self.view addSubview:scrollView];
for further more information check this link.
My problem is solved, the reasons:
UIImageView: I think my view have lost the images when i did a copy past of the view, so click on your UIImageView and set the image field.
UILabel: For the cropped text you have to create the Equal Width Constraint between the ContentView and the View, select the ContentView on the view hierarchy and Control + Drag to the View – you should get a pop-up that gives you the “Equal Widths” option.
I have a storyboard with a square imageView in the middle at: 280,140 (vertical)
When the application starts i am able to move this imageView by pressing buttons. I move the imageView using:
_mainImage.frame = CGRectMake(_mainImage.frame.origin.x + 2, _mainImage.frame.origin.y, _mainImage.frame.size.width, _mainImage.frame.size.height);
while the application is running i keep adding new imageViews to the mainView:
UIImageView *imgView;
imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, yCoordinate, 50, 10)];
imgView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:imgView];
each time i call this code the square imageView i have placed in the middle and moved around, gets set back to its starting position. It seems like the mainView gets "reset" each time the addSubview gets called. Is there any way i can add a subview without having the mainView "reset"?
Most likely your view is set up using Autolayout (this is the default for storyboards or nibs) and when you add a new subview, a layout pass is performed which resets your views position back to that defined by its original constraints.
You should move your view by updating its constraints, or turn off Autolayout. There are lots of posts around explaining how to do either of these things.
I have written some code which applies and image to a view for a UIViewController. The code is supposed to be iPhone screensize independent in as far as the difference in height between the iPhone 4 and 5.
self.view.autoresizingMask = UIViewAutoresizingFlexibleHeight;
self.view.clipsToBounds = YES;
UIGraphicsBeginImageContext(self.view.frame.size);
[[UIImage imageNamed:#"myimage.png"] drawInRect:self.view.bounds];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIView *imageView = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.view.frame.size.width, self.view.frame.size.height)];
imageView.backgroundColor = [UIColor colorWithPatternImage:image];
[self.view addSubview: imageView];
image = nil;
imageView = nil;
I found that when I add this code to the viewDidLoad method, the code failed to detect the different window size. However when I place it in viewWillAppear, the code does correct work with both screen sizes. I don't understand why.
Does any one know why this would happen ? I would like to understand it.
thanks
This happens because at the time the view is loaded, its' content hasn't necessarily been laid out and the size isn't known. This is especially true when using the autolayout system. The basic steps are,
The view is loaded
The view is laid out by the system using the constraints you give in the storyboard or code
The view appears
So the most appropriate place to put this appears to be viewDidLayoutSubviews. At that point the view and its subviews have been laid out, and the sizes are there. But putting it in viewWillAppear (or viewDidAppear, for that matter) will work, albeit will be less correct.
viewDidLoad method is called when the view controller's root view just has been created. At this point it is not added to the window hierarchy and auto layout has not been done. That is why you see this behavior.
This being said why draw the image in the graphic context? Just use UIImageView to display the image.
What you are doing is almost correct. As others have stated, in viewDidLoad the final size of the view controller's view is not set yet. The proper solution is to set the subview's autoresizingMask properly.
UIView *imageView = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.view.frame.size.width, self.view.frame.size.height)];
imageView.backgroundColor = [UIColor colorWithPatternImage:image];
imageView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[self.view addSubview: imageView];
This assumes you want the image view to fill the view controller's view.
Another solution is to update the frames of the subviews in the viewWillLayoutSubviews method.
I want to change the existing view in a UIViewController to a new view. The new view contains the old view and a little banner view.
Doing this fairly simple change leaves me with a black view.
My code looks like this
UIView *existingView = self.view;
UIView *newView = [[UIView alloc] initWithFrame:existingView.frame];
UIView *bannerView = [[UIView alloc] initWithFrame:CGRectMake(0, (self.view.frame.size.height - 50), 320, 50)];
CGRect existingViewFrame = existingView.frame;
existingViewFrame.size.height -= 50;
existingView.frame = existingViewFrame;
[newView addSubview:existingView];
[newView addSubview:bannerView];
self.view = newView;
However when switch Tabs and come back to the view which changed the view is shown just like I want. I guess I need to set a flag or something to tell the controller to redraw it's (new) view.
Edit
I wrote an simple example for this problem. You can find it on GitHub: https://github.com/Oemera/ChangeView
You did not say where you do this. It may be that you need to save the original view's super view, then add the new view to that views subViews array. I'm betting that is the problem.