//// 改變滑條的寬度

- (CGRect)trackRectForBounds:(CGRect)bounds {

? ? returnbounds;

}

//改變寬度后，滑到右邊會(huì)出現(xiàn)直角的多余的情況，以下寬度加20就是完整覆蓋

- (CGRect)thumbRectForBounds:(CGRect)bounds trackRect:(CGRect)rect value:(float)value{

?rect.origin.x= rect.origin.x-10;

?rect.size.width= rect.size.width+20;

?return CGRectInset([super thumbRectForBounds:bounds trackRect:rect value:value],10,10);

}