Init NSMutableArray of class object

Question

I work with both Objective C / Swift class in my project and I have this problem :

I try to init an NSMutableArray which contains objects of type XXXIndicator in Swift according to my objective C method which is :

- (void)myMethod : (NSMutableArray<XXXIndicator*> *) indicatorsArray;

I create my Swift mutable array like that :

var indicatorsArrayCABarDatasource = [XXXIndicator]()

It works fine for now.

And when I call my objective-c method (which has been generated to a swift method by my bridging class), I get the following error :

"Cannot convert value of type [XXXIndicator] to expected argument type "NSMutableArray!"

How I call my method :

myView.myMethod(indicatorsArrayCABarDatasource)

Thanks for help.

Dániel Nagy · Accepted Answer · 2016-02-16 15:52:21Z

1

The problem is that Swift arrays, even if they are declared with var, are bridged to NSArray instead of NSMutableArray, so you have to explicitly convert it to an NSMutableArray with its contructor, like:

NSMutableArray(array: indicatorsArrayCABarDatasource)

answered Feb 16, 2016 at 15:52

Dániel Nagy

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1 Comment

AnthonyR Over a year ago

Thank you it works. Yes I just noticed that my generated method in swift was : public func createWithPercentBarWithArrayOfIndicators(indicatorsArray: NSMutableArray!)

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