[Solved] what is “isKindOfClass” and why we use it? [closed]

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isKindOfClass returns true when an object inherits from (or is) a given class. In this case, it’s checking if images is a NSArray or a subclass of NSArray.

An example of usage in some code I’m working on is checking if the item we’re displaying needs to be handled for an iPad ([ctrl isKindOfClass:[BaseSplitViewController class]]) or the iPhone. Like this:

CGRect backViewFrame = CGRectZero;
if ([currentController isKindOfClass:[BaseSplitViewController class]]) {
    //Set width and hight of background View to 1024.
    [backgroundView setFrame:CGRectMake(0, 0, 1024, 1024)];
    if (UIInterfaceOrientationIsLandscape(orientation)) {
        backViewFrame = CGRectMake(0, 0, 1024, 768);
    } else if (UIInterfaceOrientationIsPortrait(orientation)) {
        backViewFrame = CGRectMake(0, 0, 768, 1024);
    }
} else {
    backViewFrame = currentController.view.frame;
    [backgroundView setFrame:backViewFrame];
}

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solved what is “isKindOfClass” and why we use it? [closed]