Add Parallax Effect to View

gistfile1.m

-(void) backgroundParallaxEffect {
    // Set vertical effect
    UIInterpolatingMotionEffect *verticalMotionEffect =
    [[UIInterpolatingMotionEffect alloc]
     initWithKeyPath:@"center.y"
     type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];
    verticalMotionEffect.minimumRelativeValue = @(-10);
    verticalMotionEffect.maximumRelativeValue = @(10);
    
    // Set horizontal effect
    UIInterpolatingMotionEffect *horizontalMotionEffect =
    [[UIInterpolatingMotionEffect alloc]
     initWithKeyPath:@"center.x"
     type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis];
    horizontalMotionEffect.minimumRelativeValue = @(-10);
    horizontalMotionEffect.maximumRelativeValue = @(10);
    
    // Create group to combine both
    UIMotionEffectGroup *group = [UIMotionEffectGroup new];
    group.motionEffects = @[horizontalMotionEffect, verticalMotionEffect];
    
    // Add both effects to your view
    // imgBackground is a UIImageView
    [self.imgBackground addMotionEffect:group];
}