I have an odd behavior with my app and I don't know where it comes from. I have implemented a NSScanner for a text view content that works very well. The scanner works in conjunction with the text storage to set attributes on the text storage string via text view delegate methods. However, each time I enter a space, the enclosing scroll view scrolls back to the top of the text view. Can anyone give me a hint where this comes from ?
Probably not much hassle for those more experienced than me, I found out the possible reason for this behavior (see above) so I post it here in case anyone will look for solutions for similar "problems". It seems that turning off "Non-contiguous layout" option in the XCode 4.x attributes inspector for the NSTextView in case will solve the problem. The documentation for NSLayoutManager provides more clues (under "Overview" section): "Noncontiguous layout is an optional layout manager behavior new in Mac OS X v10.5..."
Maybe somebody more experienced than me will provide more info on this and the reason of this behavior of the enclosing scroller view when non-contiguous option is checked (which is, by default).
I am stuck with the same problem and turning off "Non-contiguous layout" does solve the problem, but it gives rise to another problem which is that the NSTextView gets sluggish for 10k lines of text. A similar question has been answered differently but I wonder if it works. That solution also imposes some restrictions which may not be applicable to you though.
Related
I have a horrible problem that is worthy of a separate stackoverflow question. Perhaps I can save time by asking a different question:
What are the downsides to recreating the whole UICollectionView layout on every device rotation rather than invalidating the UICollectionView layout with invalidateLayout?
Bare in mind that its a small view with a maximum of 6 text based cells - not a lot of data.
This question is a follow on from this one. I implemented the UICollection view and everything is working except the first two buttons inside the cells aren’t changing width on a orientation change, its a mess. Its almost like the method to update the cells is definitely being called but with the data from the last orientation view. Even after lots of debugging I'm still unsure exactly what the problem is.
Update
I managed to solve my nightmare with the information from this answer and the actual code from this answer. But if someone can still answer this question it would be helpful and interesting, I still want to know the answer!
Getting the compiler warning:
Unsupported Configuration:
Unknown pattern color for the Background Color attribute
on my xib when trying to set the background color of a UIView to clear in interface builder. I swear I've made a UIView clear in the past without any trouble. Google isn't giving me anything useful. I feel like there is a head-slapping-simple answer here but after 14 hours at the keyboard (not on this issue) my tired mind isn't figuring it out.
I had lot of problem with the same issue. I solved this by this way
"select the UIView in interface builder, background color first set default color in option and build it".
I started getting this warning after updating to Mavericks and Xcode 5.1.1
I read elsewhere that the clearColor was the cause of this warning but in my case it was a pattern very similar to the standard Apple dark grey style background you see after updating an iPhone. No idea how it got there, don't remember ever asking for a pattern rather than a color nor how to select a pattern in the color selector popup. Perhaps it was chosen by IB because something in my original code was missing.
I changed it to Default, rebuilt and the warning has not returned. The only problem was going through each UIView until I found the one causing the warning because the background preview dropbox control in attributes is tiny.
Once aware of it, the pattern can be seen instead of a color
This is going to be a compile time error in XCode 8 (beta). Storyboard wont even open.
So we need to open storyboard in editor mode in XCode 7.x and search for "pattern" text and find the view as suggested by #Gordon Dove and fix it by changing the pattern to a plain color.
If I turn the autocorrection ON, the words get autocompleted, as if I write "wor", I get "word" before I finish writing. I don't want this to happen because I might be writing "world" or any word different than the autocompleted one.
I set Correction off in the Interface Builder and this problem is solved.
The problem now is that I still need the suggestions that appear in a little popover below the incomplete words.
This two features might be different but I don't know how to activate the suggestions.
How can I solve this?
This can be solved with the use of tableview. Create a tableview with the width as of the width of the textfield and height as you like. Place it just below the textfield. Make it hidden initially. When the user starts typing, fetch the array of data that resembles to the typed text and if any exists then, unhide the table view. On the subsequent typing keep on reloading the tableview sections with animations. You should be accurate on hiding, unhiding and then reloading the data on the tableview. I have implemented such thing before. It is really easy and once you get started with it you find it easy.
In the UITextView TextViewDidChange I created a thread that changed the cursor position. This, off course happens after the text view changes. The change of the cursor position triggers the autocomplete without letting me even see that there had been a suggestion.
My application is such that it does not require the tool-bar. It is very simple in nature and is controlled 100% by keyboard actions (one at a time, even). So while I know it's generally accepted that you should leave the toolbar in place, this time I feel that it actually hampers the UX of the program. So, I was wondering if it's possible to actually remove the tool-bar from my program?
It's easy to remove the traffic lights [ o o o ] from the bar, and there's no Title, but the space is still there, and the application simple looks 'off' with the extra space.
Any pointers are much appreciated, as I've looked around with the following queries:
How to remove the toolbar in an OSX application in XCode / Objective-C.
How do I remove the toolbar in an OSX application in XCode / Objective-C?
and a few others without much success.
You say toolbar, but I think you mean the window's title bar. This previous answer should work for you. The top answer is the way to do it, and the second answer is an argument against doing it.
Hide NSWindow Title Bar
If you want to keep title bar, but just want to customize it (including close, minimize and maximize buttons), you can use INAppStoreWindow component.
I can make a single row IKImageBrowserView by setting the
[imageBrowser setContentResizingMask:NSViewWidthSizable];
but in this case while i drag an image inside image browser to rearrange it, the drop place highlights with horizontal line(vertical line expected).
how can this be changed?
Many thanks.
There is no defined way to do what you want.
You may be better off writing your own custom view where you can control every detail of how things are drawn. In general, Apple's controls are "as-is" and unless they provide an explicit way to control behavior or mention that you can custom an object in some way, don't count on being able to do it easily (if at all).
I would also suggest heading to http://bugreport.apple.com and making the enhancement request - it would be best if you attached a sample application demonstrating the behavior.
EDIT: You could also try out the NSCollectionView to see if it might work for you.