RGB color codes not showing color in iphone app

Question

I am using RGB color code for my bar to show in iphone app but they don't show any color i am getting these code values from photoshop but when i use them they don't show any color in iphone app

For first line i have RGB code from photoshop is 255.192,0

        color=[UIColor colorWithRed:255 green:192 blue:0 alpha:0 ];

For Second line i have RGB code from photoshop is 195,214,155

        color=[UIColor colorWithRed:195 green:214 blue:155 alpha:0];

For Third line i have RGB code from photoshop is 49,133,156

        color=[UIColor colorWithRed:49 green:133 blue:156 alpha:0 ];

Answer 1

colorWithRed:green:blue:alpha的参数是0到1之间的浮点值。因此，您必须将所有数字除以255，例如：

color = [UIColor colorWithRed:1.0f green:0.75f blue:0f alpha:1f];

Answer 2

Try setting your alpha value as 1 like this [UIColor colorWithRed:255/255 green:192/255 blue:0 alpha:1 ];'

alpha is the transparency of your color

Answer 3

iOS上的RGB值仅介于0和1之间，因此您必须将所需的色相除以255.0f如下所示：

UIColor *color=[UIColor colorWithRed:255.0f/255.0f green:192.0f/255.0f blue:0.0f alpha:0.0f];

Answer 4

Change the line

color=[UIColor colorWithRed:255 green:192 blue:0 alpha:0 ];

to

color=[UIColor colorWithRed:(255/255.0) green:(192/255.0) blue:0 alpha:0 ];

I dont know about the alpha but I believe it should be 1