again convert textKit from Objective-C to Swift - objective-c

Question

The following code was used in my app to change the state for text in a textview with strikeThrough. Now i wrote a small sample-app, in Objective-C and Swift. Again the result is frustrating as u can see in the screenshots. Any help is welcome so much.
I just use a TextView and try to show some text with StrikeThrough-Layout (other styles like Bold, Italic, Underline... have the same result)
First objc, that is ok, although the font-size of the striked part is very small
and now with Swith. The font is small as with objc, but there is no strikethrough :-)
And now again (dont know another way) the test-code:
objc Part 1: set the Font for a Range and call makeStrikeThrough()
- (void) setFont
{
NSRange range = NSMakeRange(11, 24);
[self makeStrikeThrough:range];
}
same in swift:
func setFont() {
let range = NSMakeRange(11, 24)
self.makeStrikeThrough(range)
}
objc Part 2: the strikeThrough
- (void) makeStrikeThrough:(NSRange)selectedRange
{
NSMutableDictionary *dict = [self getDict:selectedRange];
[_textView.textStorage beginEditing];
[_textView.textStorage setAttributes:dict range:selectedRange];
[_textView.textStorage endEditing];
}
and in Swift:
func makeStrikeThrough(selectedRange: NSRange) {
let dict = self.getDict(selectedRange)
self.textView.textStorage.beginEditing()
textView.textStorage.setAttributes([String() : dict], range: selectedRange)
self.textView.textStorage.endEditing()
}
objc Part 3: the help-method getDict() to buid a dictionary with the StrikeThrough
- (NSMutableDictionary*) getDict:(NSRange)range
{
NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];
[dict setObject:[NSNumber numberWithInt:2] forKey:NSStrikethroughStyleAttributeName];
return dict;
}
and again in Swift
func getDict(range: NSRange) -> NSMutableDictionary {
let dict = NSMutableDictionary()
dict[NSStrikethroughStyleAttributeName] = NSNumber(integer: NSUnderlineStyle.StyleDouble.rawValue)
return dict
}
I´ve tried to reduce the problem to the root. Perhaps u vote me down ;-)
But i need a solution...
Or should i use AttributedStrings?
The procts to download
objc
swift

Answer 1

It boils down to one line of code in your Swift function:
func makeStrikeThrough(selectedRange: NSRange) {
let dict = self.getDict(selectedRange)
self.textView.textStorage.beginEditing()
textView.textStorage.setAttributes([String() : dict], range: selectedRange) // error
self.textView.textStorage.endEditing()
}
it should have been just dict:
func makeStrikeThrough(selectedRange: NSRange) {
let dict = self.getDict(selectedRange)
self.textView.textStorage.beginEditing()
textView.textStorage.setAttributes(dict, range: selectedRange)
self.textView.textStorage.endEditing()
}
And you need to change your getDict function too:
func getDict() -> [String: AnyObject] {
return [NSStrikethroughStyleAttributeName: 2]
}