iOS:如何用一种颜色替换搜索栏的背景光/发光 [英] iOS: How to replace Search Bar background shine/glow with one color

问题描述

如何从搜索栏的背景中删除发光/发光(渐变).我只想用一种颜色代替它.

How do I remove the shine/glow (gradient) from the background of a Search Bar. I would like to replace it with just one color.

从此:

像这样

推荐答案

1要删除有光泽的背景，请执行以下操作:

UISearchBar具有类 UISearchBarBackground 的子视图，只需循环浏览子视图，当您找到该类的子视图时，将其alpha设置为0.

UISearchBar has a subview of class UISearchBarBackground, just cycle through the subviews and when you find a subview of that class, set its alpha to 0.

RubyMotion示例:

RubyMotion example:

searchBar.subviews.each { |v| v.alpha = 0 if v.class == UISearchBarBackground }  

2要添加纯色背景，请覆盖drawRect方法:

RubyMotion示例:

RubyMotion example:

def drawRect(rect)
  blackColor = '#222222'.to_color
  context = UIGraphicsGetCurrentContext()
  CGContextSetFillColor(context, CGColorGetComponents(blackColor.CGColor))
  CGContextFillRect(context, rect)      
end

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