Objective-C, accessing object variables within an NSArray

Question

Is it possible to directly access an object variable with an array of objects like so..

NSArray *myObjectsInArray = [NSArray arrayWithObjects:(id) myClass,myOtherClass, nil];

NSLog(@"%d",[myObjectsInArray[0] returnSize]);   //works perfect

NSLog(@"%d",[myObjectsInArray[0].size]);  // error

I'm not sure if it's a syntax problem or if it cannot be accessed without a method. thanks for any help.

CrimsonChris · Accepted Answer · 2014-06-02 22:33:40Z

1

Accessing an array like so myArray[0] is equivelant to calling [myArray objectAtIndex:0]. The return value of objectAtIndex: is id. Any method call may be sent to an id reference. However, the compiler will not allow the use of the dot syntax shortcut to call methods on it.

If you really want to use the dot syntax, you need to cast it.

NSLog(@"%d",[((MyClass*)myObjectsInArray[0]).size]);

answered Jun 2, 2014 at 22:33

CrimsonChris

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