Let me preface this by saying I'm new so I might not be the best at asking questions but here it goes. I am getting this error when I hit build in XCode with this code.
-(IBAction)unwindToRecipeDetails:(UIStoryboardSegue*)segue
{
ChangeRecipeDetailViewController *source = [segue sourceViewController];
recipeLabel = source.textView; // error: Incompatible Pointer Types Assigning to UILabel from UITextField
}
Here's what I'm trying to do. I based the code off of this snippet which works...
-(IBAction)unwindToRecipeBook:(UIStoryboardSegue *)segue;
{
AddRecipeViewController *source = [segue sourceViewController];
RecipeItem *item = source.recipeItem;
}
This is supposed to make AddRecipeViewController the data source for the initial RecipeBook page when the user navigates backward. I'm trying to implement the same thing for when a user navigates backward from the ChangeRecipe page to the RecipeDetails page.
Apparently I mixed two different types of code in the error, UILabel and UITextField. I get that they are incompatible but what could I change either one to in order to make it work. It is a little different than what I am basing my code off of in that I don't just want to transfer the same text, I want to change its format as well.
Again, I'm new at this so if anyone needs more information I'll gladly post it. Thanks.
Update 1: Palpatim: Thank you. Your solution worked. So to clarify, in order to transfer text I have to put .text after the initial source. This combines two unlike objects and transfers only text to text. Is this correct? I'm new at coding and am just trying to learn.
Philip Mills: I meant I wanted to change the format of the text when I transfer it from something that is editable like a textview to something static like a label.
Thanks for the help.
Related
I have a simple desktop app where a TextField should be focused when the window loads. I have this working, but it's a little annoying that, having loaded the users content into the TextField, the entire contents of the field become selected automatically. The user may want to start editing the content, but they will rarely/never want to replace it all at once (imagine a text editor doing this, to see what I mean).
I see there is an Action for selectAll: but what I want is the opposite Action of selectNone:
I tried passing nil to the selectText method, but that doesn't work:
textField.selectText(nil)
I found a number of answers on StackOverflow that mention a selectedTextRange, but this appears to be outdated, because Xcode 6.3 doesn't recognize this as a valid property on TextField.
Can anyone explain how I do this?
It's been a while since I've dealt with NSTextFields to this level (I work mostly in iOS these days).
After doing a little digging I found this on the net:
NSText* textEditor = [window fieldEditor:YES forObject:textField];
NSRange range = {start, length};
[textEditor setSelectedRange:range];
window is the window containing your field, textField.
This requires the field editor to be managing your field, what can be done simply by previously selecting the whole text of the field using the selectText:sender method.
Here is the final swift code that I got working based on what Duncan C posted:
if let window = NSApplication.sharedApplication().mainWindow {
let textEditor = window.fieldEditor(true, forObject: textField)!
let range = NSRange(0..<0)
textEditor.selectedRange = range
}
I have an int value in my file1ViewController.m and i want to change this value form my file2ViewController.m. I tried to import the file, NSUserDefaults but i wasn't able to let it works.
Anyone can help me with the code? What is the simplest method to do this simple thing?
Thanks everyone :)
The easiest method is to pass a reference to a file1ViewController object to a file2ViewController when it is pushed or presented. The exact way of doing that depends on the relationship between those objects and how they are created and given control of the display.
Knowing the difference between classes, objects, and code files is a big step in the right direction.
I'm new to this, and new to coding.
I'm working on a quiz app, and here is one of the lines of code:
[questions addObject:#"When was the Declaration of Independence signed?"];
[answer addObject:#"1776"];
But when I test it, the question is too long, so it makes the text extra small, how can I make it so half of it will drop down to the next line?
There are a couple options.
The most basic is to "hard-code" the line break, which is NOT the best option, but I'll spell it out so that you are aware of the difference: this involves splitting the question into two lines by adding a "newline" code (\n) at the point in the question where you want the newline to start. For example:
[questions addObject:#"When was the Declaration\nof Independence signed?"];
This isn't flexible or adaptive, and whether you are using the Interface Builder to configure the object displaying the text (UILabel or UITextView, or other class), the second line of the text may disappear because it falls below the visible area set-up when you create the UILabel or UITextView. This method also goes against best practices because it confounds display with data. There is nothing wrong with your data as it stands.
The better option is to work ONLY with the object displaying the text - which you'd need to do anyway. I'll use UILabel as an example here, but both UILabel and UITextView objects have properties you can set programmatically or in Interface Builder that will effectively enable them not only to stretch their display area instead of shrinking your text, but also to wrap your text at the most logical point based on the new size of the display area.
Programmatically, first make sure that the number of lines for your UILabel object is set to 0:
textLabel.numberOfLines = 0;
You can also do this in Interface Builder if that's where you've created your UILabel.
If that doesn't work, something else is probably not set-up properly - check on the UILabel's metrics to make sure you haven't "locked" its size in any way (its ability to auto-grow or auto-shrink based on the size of its contents).
Does anyone have an example of using a QWidget as an editor in a QAbstractTableModel?
I have a column which when edited should create a QCombobox with the list of choices.
The docs seem to suggest I need to write a QAbstractItemDelegate and a custom paint function but that seems overkill to simply pop-up a standard QCombobox in Qt::EditRole.
Note - the combo box contents are the same for every row and it only needs to be shown when somebody clicks in the cell.
I know this should be simple but I can't get it to work. It's easy for a QTableWidget based table - but I need it for a very large data table.
The docs seem to suggest I need to write a QAbstractItemDelegate and a custom paint function but that seems overkill to simply pop-up a standard QCombobox in Qt::EditRole.
You don't need to go that far. One way is to subclass QStyledItemDelegate and then override createEditor() so that it returns your prepopulated combo box. Its setEditorData and setModelData functions will probably already suffice if you`re using basic Qt value types.
If you need something more generic that works across many different models, you can create a QItemEditorFactory that associates your editor with the correct type. This also works well with custom types.
When indicated by your view's EditTrigger, your view will get the delegate specific to the cell on which the edit is being invoked and call delegate->createEditor(...) which can then size the combo box according to the options parameter as well as set the current entry to the value specified by the model, although most of this should be handled by the QStyledItemDelegate. Thus, you won't have to worry about the Qt::EditRole directly as the view will handle that.
Did you try and have a look at the following example from Qt :
Spin Box Delegate Example
Maybe it will give you a much clearer view on the subject !
Hope it helps a bit !
I'm trying to write some simple code to drag-and-drop the contents of a text file onto a window. With some help from an earlier post and an Apple example I've now got the basics of drag-and-drop up and running.
Unfortunately however, Apple's sample code deals only with images. Can anyone please tell me how I'd modify their "pasteboard" method (shown below) to send the contents of a simple 'dot.txt' file?
- (void)pasteboard:(NSPasteboard*)sender provideDataForType:(NSString*)type
{
//------------------------------------------------------
// method called by pasteboard to support promised drag types.
//--------------------------------------------------------
//sender has accepted the drag and now we need to send the data for the type we promised
if([type compare: NSTIFFPboardType]==NSOrderedSame)
{
//set data for TIFF type on the pasteboard as requested
[sender setData:[[self image] TIFFRepresentation] forType:NSTIFFPboardType];
}
else if([type compare: NSPDFPboardType]==NSOrderedSame)
{
[sender setData:[self dataWithPDFInsideRect:[self bounds]] forType:NSPDFPboardType];
}
}
Thanks :-)
Can anyone please tell me how I'd modify their "pasteboard" method (shown below) to send the contents of a simple 'dot.txt' file?
The caller is asking you to send data of a certain type. If you can provide data of that type, do so by putting it on the pasteboard. If you can't, do nothing.