SomeView

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
	NSLog(@"Touched page 1!");
    
    UITouch *touch = [touches anyObject];    
    
    CGPoint location = [touch locationInView: self];
    
    CGRect previousButtonFrame = [previousButton frame];
    
    NSLog(@" %f, %f", location.x, location.y);
    
    if (CGRectContainsPoint(previousButtonFrame, location)){
        NSLog(@"previous button clicked");
    } 
}