iOS - Eezy Tutorials

When we need to add methods to existing class, then we can use categories. A simple category for NSString is shown below.

// Category Name - EezyAdditions
@interface NSString(EezyAdditions)

// eezy method
- (void)sampleMethod;

@end
// Category Name - EezyAdditions
@implementation NSString(EezyAdditions)
// eezy method
- (void)sampleMethod{
	NSLog(@"extended method");
}

@end

int main(int argc, const char * argv[])
{
    //  Autoreleasepool used in main for automatic memory management.
    @autoreleasepool {
		NSString *string= [[NSString alloc] init];
        [string sampleMethod];
        
    }
    return 0;
}