Displaying text in text view from NSArray

Question

This method found in the AppDelagate, loads a text file of my choosing and splits the context of the text file into an array.

Im having trouble displaying the contents of the array in my NSScrollview * called self.textView.

I am not sure how to update the text view with each member of the array.

- (IBAction)loadButton:(id)sender {        
    NSOpenPanel *panel = [NSOpenPanel openPanel];
    if ([panel runModal] == NSFileHandlingPanelOKButton) {
        NSURL *bookUrl  = [panel URL];
        NSString *contents = [NSString stringWithContentsOfURL: bookUrl encoding: NSASCIIStringEncoding error: NULL];
        NSArray *loadedBook = [contents componentsSeparatedByString:@"#NP#"];
        self.textView.value = loadedBook[0];            
    }
}

I have no clue what the `textView.value` property is. Shouldn't it be `textView.text`? — Lord Zsolt, May 12 '15 at 12:59
textView.text isn't a property that i can assign. Value was the only one that i thought could be close to what i needed. — Harvey1066, May 12 '15 at 13:01
Is googling "NSTextView how to change text" hard? This was the first result: http://stackoverflow.com/questions/14646163/change-the-text-of-a-nstextview-programmatically — Lord Zsolt, May 12 '15 at 13:02
The text view is declared as a property in the appdelegate.h file @property (weak) IBOutlet NSScrollView *textView; — Harvey1066, May 12 '15 at 13:03
Why on earth would you name an NSScrollView object as `textView`? — Lord Zsolt, May 12 '15 at 13:04
it was called text view when i added it in the interface builder.. and the setString method wasnt avaialble — Harvey1066, May 12 '15 at 13:06
I have realised that when i made outlets for the property it connected a scroll view instead of the text view.. :( — Harvey1066, May 12 '15 at 13:12
a NSScrollview? really? ok, then my answer wont work, I supposed it was a NSTextView — Daniel, May 12 '15 at 13:14
You will have to add a text UI element to show the text first, then set the text. — Daniel, May 12 '15 at 13:17

score 1 · Answer 1 · edited May 23 '17 at 11:58

The right method is setString:, which is declared in NSText.

your code should be:

- (IBAction)loadButton:(id)sender {        
    NSOpenPanel *panel = [NSOpenPanel openPanel];
    if ([panel runModal] == NSFileHandlingPanelOKButton) {
        NSURL *bookUrl  = [panel URL];
        NSString *contents = [NSString stringWithContentsOfURL: bookUrl encoding: NSASCIIStringEncoding error: NULL];
        NSArray *loadedBooks = [contents componentsSeparatedByString:@"#NP#"];
        [self.textView setString:bookStr];
    }
}

UPDATE

Take a look at this question, to see how to add text to a NSScrollView

Displaying text in text view from NSArray

1 Answers1