UISwitch大小总是改不了...找了一个简便方法.
?mySwitch = [[UISwitch alloc] initWithFrame: CGRectMake( width - 55, height * .5 - 15, 100, 20)];
[mySwitch setOn: YES animated: YES];
mySwitch.transform = CGAffineTransformMakeScale( .75, .75);
mySwitch.onTintColor = RGBACOLOR( 99, 155, 0, 1);?
原文：http://www.cnblogs.com/jz319/p/3805571.html