How to set UISwitch border color?

问题

My app has done:

[[UIView appearance] setTintColor:[UIColor whiteColor]];

And here is what I have when on:

and off:

I need to make UISwitch border visible like in Settings.app:

回答1:

Your [[UIView appearance] setTintColor:[UIColor whiteColor]]; is interfering with the tint color of your switch. The command to set the tint color is self.mySwitch.tintColor = [UIColor grayColor]; which sets the color used to tint the outline of the switch when it is turned off.

回答2:

Will you please try adding this line to your AppDelegate's didFinishLaunchingWithOptions

[[UISwitch appearance] setTintColor:[UIColor grayColor]];

This should apply the chosen Tint color on all your UISwitch controls.

回答3:

Rather than using the appearance proxies you can also use:

[self.mySwitch setThumbTintColor:[UIColor blueColor]];
[self.mySwitch setOnTintColor:[UIColor redColor]];

ie. Use setOnTintColor for the background/border color.

来源：https://stackoverflow.com/questions/21959403/how-to-set-uiswitch-border-color