UISegmentedButton使用图案设置色调颜色

Question

So I have the following code:

  UISegmentedControl * segmentedCtrl = [[UISegmentedControl alloc] initWithFrame:CGRectMake(0, 0, 150, 35)];
    [segmentedCtrl setTintColor:[UIColor colorWithPatternImage:[UIImage imageNamed:@"duck.png"]]];


 [segmentedCtrl setSegmentedControlStyle:UISegmentedControlStyleBar];

And here's the duck image I am trying to use:

Anybody care to tell me why it's not working. I tried with any kind of image and it's not working. FYI Iam not trying to have a duck background in my segmented control. This is just to illustrate the point that setTint using the colorWithPatternImage doesn't work for any kind of image.

Answer 1

have you tried a 1px width image? The image you are using is too large for pattern creation

Answer 2

UISegmentedControl (as all other UIKit controls, I think) doesn't support pattern colors as tint colors. The tint color is basically used to create a glossy gradient and that would have to be done very differently with an arbitrary pattern.

To customize the appearance of the background, use setBackgroundImage:forState:barMetrics: and setDividerImage:forLeftSegmentState:rightSegmentState:barMetrics: instead (with appropriate images of course, patterns aren't a good fit for these).

Answer 3

The tintColor on UISegmentedControl is only used as the basis to calculate the gradient used in the control. You can't very well have a gradient image, so it's just using part of it. It sounds like what you need is a custom subclass of UISegmentedControl.

Answer 4

    UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:nil];
    [segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"up_button.png"] atIndex:0 animated:YES];
    [segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"down_button.png"] atIndex:1 animated:YES];

Answer 5

First take the RGB value of color by opening your image in Photochop , then use that values.

segment-control-background-color