This is my first post on here and I'm very new to iPhone developing, so please bear with me.
I have an app which has a few view controllers and each view controller has a few nib files that it controls and some of the nibs have more than one view. There is a toolbar throughout the app, controlled by the root view controller.
After lot's of searching, I have got rotation working on every screen, except one. I haven't got them to load in the correct orientation, but I guess that's a different question.
In my nibs that have more than one view, I can select the autosizing options only on the original main view. On the views that I have added, which I load using insertSubview, I can select the fixed margin options, but not the width and height resizing options. I am using Xcode 4.
My 1st Question, is why I am unable to select the resizing options on the additional views?
Sorry, I had to delete the images I put in here, showing what I mean, to be able to post.
Anyway, that is not my main problem, I just want to know, out of curiosity, why I can't select the resize options. I have found a way around it in the code. In the function where I load the subview, I add [viewName setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
E.g to load the view that I have named shiftStart, I use:
- (IBAction)loadShiftStart:(id)sender {
[self clearView];
[self.view insertSubview:shiftStart atIndex:0];
[shiftStart setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
}
Now here is my problem. I have a nib file that has 3 views, view which is the main view that loads first, rotaStart, which loads as a subview when a button on the first view is pressed and shiftStart, which loads as a subview when a button on the first view is pressed. rotaStart and shiftStart are almost identical, with a title, a text block, a Yes button and a No button. The only difference is the text in the box, and which view is loaded if you click on the Yes or No buttons.
I have all the same resize and margin options selected, in Xcode, for the title, text block and buttons and as far as I can tell, the code that loads them is identical (see code below), but shiftStart rotates correctly and rotaStart does not.
- (IBAction)loadRotaStart:(id)sender {
[self clearView];
[self.view insertSubview:rotaStart atIndex:0];
[rotaStart setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
}
- (IBAction)loadShiftStart:(id)sender {
[self clearView];
[self.view insertSubview:shiftStart atIndex:0];
[shiftStart setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
}
Can anyone tell me why rotaStart is not rotating, when the phone is changed to landscape please?
Sorry this explanation has got a bit long winded. I'm not sure how else to explain it.
Thanks
For anyone else looking at this, with a similar problem, #longball solved it for me. Somehow I had managed to add a second view over the top of the base view, complete with Labels & Buttons. Deleting the extra view fixed the problem.
Related
I have two UIButtons that I added to my view
[self.view addSubview:button1];
[self.view addSubview:button2];
These buttons have a selector and in the selector is a menu where the user can choose an option and this option can vary in string size for the button so I decided to remove the buttons from the view and reload them again with different string size and button size. I have am getting the information from an API call so there is where I set the buttons up to my view. I tried to do this:
[button1 removeFromSuperview];
Also tried:
[self.button1 removeFromSuperView];
Now, for the UILabel I have it inside a table view cell because the string is long and covers my detailTextLabel. I am using UITableViewCellStyleValue1 for the cells. I have tried to use NSLineBreakByWordWrapping and set the numberOfLines to 0 as well as 5 so I then decided to add the UILabel inside the table view cell so I can control how far the string goes and I can also wrap that around. Since the cell was writing over and over the label every time the cell with the table view was hidden, I decided to create the label inside the if(cell == nil) statement.Like the button, this label also gets refreshed when the buttons are pressed and a menu option is chosen so I have to remove it from the view, the same way i did the buttons. For some reason it isn't working. Anyone have any thoughts/ideas/suggestions?
I also NSLog(#"%#",[button1 superview]) after I removed it to make sure that the button was indeed (null) as well as the label, and they do show up on the terminal as null but the buttons overlap each other, in fact you can still click the old button and you can see it underneath the new button. Same goes with the label. If you need any code let me know, this problem is frustrating me so much!
Also, I am on iOS7 and for some reason my device isn't displaying the status bar. I've tried to change it inside the info.plist -> status bar style. I've tried the 3 options it has but none of them seem to work. I checked all my xib files and checked for any hidden keywords in my .m files. Thanks in advance.
Since you mentioned the button was making an API call I am guessing you may be threading that section of code. If that's the case then the reason its not working is likely because you are not allowed to update the UI in a background thread.
Try replacing:
[button1 removeFromSuperview];
with this:
[button1 performSelectorOnMainThread:#selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
I deeply suggest using storyboards, they make working with the UI a lot easier! They also allow you to play with constraints to see how your UI elements react to longer text or to the screen rotating, etc...
That apple tutorial:
https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/SecondiOSAppTutorial/Introduction/Introduction.html
goes through a simple app with storyboards!
I have an iOS app in which i have created some view-controller in storyboard, the view-controller's view has some subviews. Now I want to add some scrollview in that view and want to move all those subviews in that scrollview.But the problem is when i drag those views to scrollview, interface builder is centering those subview, all the position information is lost.
I don't want to let interface builder to do that. Isn't there any proper way to solve this problem? I have already searched about this problem and found these two solutions but none is useful in my case.
Adding a subview to the current view without messing up positioning of objects in the view
I am unable to use this solution because, this is adding a view into another view while i want to add scrollview.
XCode - Is there a way to drag a component from one view to another without losing its frame?
Also this solution is not helpful for me because, storyboard file is messed up and corrupted when i did this.
Yes there is an easy way to do this:
Step 1: Select your views
Step 2: Go Editor > Embed In > Scroll View
Done!
PS. This is a very handy way to group views in fact. You can embed any views into a 'container' view, move it wherever you like (even cross-scene) retaining relative position information and then you could keep it as a group or unembed them.
If anyone comes across this question trying to find a way to do this programmatically (as I did), here's what I ended up using:
for (UIView *view in [_viewAdd subviews]) {
[_viewMain addSubview:view];
}
Note: addSubview removes the view from it's previous superview so there's no need to code for the removal
What I'm doing:
I have a custom ViewController called "MoreAppsViewController" - it displays/advertises several of the other apps I have created, and I use this same class/xib etc in several different apps. It controls a small view that gets displayed on options screens.
Normally I can just add this to any view with code such as:
MoreAppsViewController * moreApps = [[MoreAppsViewController alloc] initWithNibName:#"MoreAppsViewController" bundle:nil];
[self.view addSubview:moreApps.view];
-
The Problem:
I'm trying to display the same view in a UITableViewCell. This is the code:
moreApps = [[MoreAppsViewController alloc] initWithNibName:#"MoreAppsViewController" bundle:nil];
[cell.contentView addSubview:moreApps.view];
It does get displayed. However, some elements of moreApps.view appear lower than they should - they get drawn below the cell, but the rest of the elements get drawn in the cell correctly. Specifically, it's a scroll view that forms the main part of moreApps.view that gets pushed below where it should be (the scroll view and anything on it).
Any idea why this is happening or how to fix it? Any help would be much appreciated!
-
Lastly - The scroll view is just part of the .xib file, I don't do anything weird in the MoreAppsViewController either.
EDIT:
To clarify, by 'below' I mean further down the page. If I increase the cell's height, the scroll view is just pushed further down the page.
EDIT 2:
Here's what it was doing: (the bit below the cell should be appearing inside it)
Weirdly enough, placing the scroll view inside a dummy view fixes the problem (via the interface builder). Don't ask me why - feel free to explain though!
Seems to happen for any scroll view on a .xib, when placed inside a UITableViewCell of above default height.
Is the following easy to code?
I have a tableview and when the user selects a cell a detail view is loaded.
I want to allow the user to navigate throughout the items/detail-view representing the items in the tableview by left and right swipes, working in the same way as e.g. the home-screen of the iphone (e.g. while swiping, one page is moving off the screen and the next appears).
I have seen this implemented in the MobileRSS-APP, so it is possible, but I just have a hard-time figuring out the way to do it properly.
Thanks a million in advance! I am still trying to find my feet with cocoa-touch...
This is not a secret, Apple provides the sample code called the PageControl that demonstrates exactly what you want to achieve:
This application primarily demonstrates use of UIScrollView's paging functionality to use horizontal scrolling as a mechanism for navigating between different pages of content.
I implemented it in many of my apps.
The iphone home screen (springboard) works with a scroll view set to paging enabled.
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,self.view.frame.size.width, self.view.frame.size.height)];
[scrollView setPagingEnabled:YES];
Then, lets say there's two pages of apps to swipe through - you set the content size of the scroll view to twice the width of your view:
[scrollView setContentSize:CGSizeMake(self.view.frame.size.width*2, self.view.frame.size.height)];
And thats how that is done. :) I don't know if its the same for the MobileRSS-APP.
Things to bear in mind:
This isn't the default way a table view works. You might get your app rejected by apple. A table view is meant to work by clicking.
You could probably replicate the functionality without using a scroll view using touches methods and the navigation controller. A good tutorial describing how to detect swipes on your view is here: http://www.dosomethinghere.com/2009/07/23/simple-swipe-detection-in-the-iphone-sdk/
In the last method in that tutorial where there is the NSLog("swipe right") you could replace that with [self.navigationController popViewControllerAnimated:YES] which would replicate pressing the "back" button in the navigation bar.
I don't know what you could do for swipe left though..... if you wanted to do this on the table view you'll have to do some complicated maths determining how far the table view has been scrolled. Or you could test for touch events on the cells themselves, but thats something you wil have to look into. :)
Kinda confusing title but oh well.
I have a UIScrollView in my viewController, in that is 3 UIViews with some buttons in each. I download data from a server and populate it into the view and this works as soon as you start scrolling the UIScrollView, but sometimes the buttons only partially load.
Usually its the button label without my formatting added to it. The button works and as soon as you click the button the rest of view loads correctly. Basically if the UIScrollView is touched in anyway it displays correctly.
I've tried adding and removing the scrollView to the view and I've called [scrollView setNeedsDisplay] and the exact same thing happens.
Anyone come across this?
EDIT: screen shot before and after (just basic to demonstrate whats happening)
I was building the buttons in drawRect which was causing issues. Built the buttons in a separate method and it worked fine.