macOS Character arrays in Xcode

[JimmyFeatures]

I want to assign the value of a text field to a character array in Xcode. How would I go about doing this?

Thanks.

 

[robbieduncan]

I want to assign the value of a text field to a character array in Xcode. How would I go about doing this?

Thanks.

What languge are you using? XCode supports Obj-C, C++, Java, AppleScript and probably lots more! Also what type is the character array? Is it char (i.e. a byte) or unichar (2 bytes I think).

 

[JimmyFeatures]

Basically, I want to assign

char array[255]

to a text input.

 

[robbieduncan]

Basically, I want to assign

char array[255]

to a text input.

You still havn't said what language! That narrows it to C++ (Carbon) or Obj-C (Cocoa). When you say text input do you mean from the command line or from a text box on screen (in a window)? If it's from a text box in a window you need to very carefull with this as the string value from that text box will be 16-bit Unicode, whereas your array is for 8-bit chars.

You can do do this in Cocoa with something like:

IBOutlet NSTextView *textView;  // Conect in IB

...

char *array = [[textView stringValue] UTF8String];

This assumes that the text in the text box is a UTF-8 string (i.e. ASCII). The array returned will be null terminated, not 255 bytes long.

 

[JimmyFeatures]

OK. To clear this up.

I am using OBJ-C in cocoa, and would like to assign a text input, which is a text box inside a window (not command line) to a C/C++ style character array.

 

[robbieduncan]

OK. To clear this up.

I am using OBJ-C in cocoa, and would like to assign a text input, which is a text box inside a window (not command line) to a C/C++ style character array.

Then the above will work for UTF-8 strings. If you need it in an array that you have assigned you can just copy the characters across or use the provided NSString method. You need to know what encoding you are in.

Perhaps you could read the documentation.