UIColor colorWithRed:green:blue:alpha: always returns white unless one argument is 0

Question

I am using

[UIColor colorWithRed:136 green:155 blue:218 alpha:1.0]; 

to change the background color of my table view cells.

But fo

Answer 1

Set navigation bar to transparent in iOS 11

(void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    [self.navigationController.navigationBar setBackgroundImage:[UIImage new]
                                                  forBarMetrics:UIBarMetricsDefault];
    self.navigationController.navigationBar.shadowImage = [UIImage new];
    self.navigationController.navigationBar.translucent = YES;
    self.navigationController.view.backgroundColor = [UIColor clearColor];
    self.navigationController.navigationBar.backgroundColor = [UIColor clearColor];
}