interface-builder

问题 I read the following answer, so I know that "Unknown class in Interface Builder file" error can be solved using the -ObjC linker option. (FYI, MyClass is in static library.) https://stackoverflow.com/a/6092090/534701 I've also found that single line of [MyClass class] code in the App Delegate can handle the same problem without using -ObjC option. My Question is how come the code can work. According to the answer that I've attached above, the error occurs because symbols in my static

问题 I am working with a TabBarController >> NavBarController UI. One of my UIViewControllers has a UIScrollView in it with some text (UITextField) in it. Problem is, the uppermost text in the UIScrollView is covered by the NavBar. How do I fix this? I am trying to manually adjust stuff in IB with mixed results but I want a more CERTAIN solution. 回答1: The problem is that your view is too big, and it's being positioned under the nav bar. To fix, open up the .xib with your container view and/or your

问题 I have an Android app with a UI like this for viewing emails: I'm trying to port this to iOS and need it to work with iOS 5.0 and above (so can't use auto-layout in iOS 6.0). Hopefully you can tell how the layout should adjust/flow based on the example. What would be the best way to handle this type of layout? The From and Re lines need to be variable height as shown (actually the To: line as well). The message body needs to be variable height of course. My only attempt so far has been trying

问题 I'm trying to set appropriate NSLayoutConstraint s for a UIImageView in a UITableViewCell . The desired constraints are as follows: 16:9 aspect ratio 0 leading 0 trailing 11 top 11 bottom The UIImageView is the sole subview of the cell's contentView. I have set tableView.rowHeight = UITableViewAutomaticDimension and tableView.estimatedRowHeight = 80 2018-03-28 15:52:30.454688-0400 TestApp[28844:694668] [LayoutConstraints] Unable to simultaneously satisfy constraints. Probably at least one of

问题 I'm struggling to use Chromium Tabs in Cocoa and I really seem to be missing something. I've subclassed CTBrowserWindowController ( ppEditor ), CTBrowser ( ppDocumentBrowser ), CTTabContents ( ppDocument ) and CTTabContentsController ( ppDocumentController ) Editor creates new Documents by : [self addTabContents:(ppDocument*)doc]; (and I've also tried first adding a Document Controller for the specific document first, but this doesn't work either) I'm connecting my outlets from TabContents

问题 In a .xib file how do I keep the Autolayout on for iOS 6 but off for iOS below 6. If I turn it off my .xib doesn't get the proper layout . If I turn it on my Iphone with 4.3 crashes. Any help would be appreciat it Thank you 回答1: I don't believe this is possible as autolayout changes how your application is compiled. The options I've considered for a workaround to this are: Detect the height of the display and programmatically change some of the elements (ick, but I've done this when it was

问题 in my app when i click on refresh button, an activity indicator appears. and when tableView is refreshed then it disappears. i want to use a image instead of that activity indicator in such a way that when i click on refresh that image ll come on the whole screen and when view ll b refreshed it ll disappear. how can i do that? thanx in advance 回答1: Basically what you need to do is add a "cover page" view over your current view. These usually work best if you set the alpha to about 50%.

问题 I'd like to have some views fixed on the top of the screen, some other on the bottom and a single fixed size view in the equal distance between the top and bottom views. I cannot figure out how to do this with Autolayout constraints. Do I need to add some spacer views to the UI, or calculate the desired position programatically? 回答1: You can do this with only one additional view. It'd look like this: stuff_on_top middle_view (with fixed size view inside) stuff_on_bottom There'd be vertical

问题 I'm building an iOS application and would like to have a menu that appears from the bottom and can be opened with an upwards swipe. Doing this programmatically works easily. Since I would also like to learn how to do this in Interface Builder I gave it a try and now Interface Builder is driving me crazy. What I did: Create a new View Controller in story boards. Add the arrow so that this controller is shown first. Add a view to the bottom of the View Controller's view. Let's call this view

问题 I'm trying to constrain a couple of views within a controller. I understand how to set spacing between views, and width/height for each view. I'm a little unsure about dynamic height and width, I'm assuming that it's the margin-locks duty to adjust the weight appropriately. Advice on this would be much appreciated. Anyways, I'm trying to set a "Trailing Space to: Superview" constraint, which automatically sets to -16. See photo: As you can see, I've selected margins for left right and top of