- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
CAGradientLayer *gradientLayer = [CAGradientLayer layer];
gradientLayer.frame = self.view.bounds;
gradientLayer.colors = @[(__bridge id)[UIColor purpleColor].CGColor, (__bridge id)[UIColor redColor].CGColor];
gradientLayer.startPoint = CGPointMake(0.5, 0);
gradientLayer.endPoint = CGPointMake(0.5, 1);
gradientLayer.locations = @[@0.65, @1];
[self.view.layer addSublayer:gradientLayer];
}