设置导航标题颜色以及导航条背景色

//设置导航条标题颜色

[self.navigationController.navigationBar setTitleTextAttributes: @{NSFontAttributeName:[UIFont systemFontOfSize:20],NSForegroundColorAttributeName:[UIColor whiteColor]}];

//或者自定义标题，新建一个lable赋给self.navigationItem.titleView 

UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 20, 320, 44)];titleLabel.backgroundColor = [CommonTools colorWithHexString:@"1680fa" alpha:1.0];titleLabel.font = [UIFont boldSystemFontOfSize:20];titleLabel.textColor = [UIColor whiteColor];titleLabel.textAlignment = NSTextAlignmentCenter;titleLabel.text = @"视频聊天";self.navigationItem.titleView = titleLabel;

//设置导航栏背景色

self.navigationController.navigationBar.barTintColor = [CommonTools colorWithHexString:@"1680fa" alpha:1.0];

colorWithHexString:@"1680fa" alpha:1.0取到的颜色接近于导航条

+ (UIColor *)colorWithHexString:(NSString *)hexString alpha:(CGFloat)alpha
{unsigned int red, green, blue;NSRange range;range.length =2;range.location =0;[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&red];range.location =2;[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&green];range.location =4;[[NSScanner scannerWithString:[hexString substringWithRange:range]]scanHexInt:&blue];return [UIColor colorWithRed:(float)(red/255.0f)green:(float)(green/255.0f)blue:(float)(blue/255.0f)alpha:alpha];
}