iOS 设置自带UISearchBar的背景颜色
1、先进行图片的生成（代码生成），也可以通过UI设计师预先切好的图片。
/**
* 生成图片
*
* @param color 图片颜色
* @param height 图片高度
*
* @return 生成的图片
*/
- (UIImage*) GetImageWithColor:(UIColor*)color andHeight:(CGFloat)height
{
CGRect r= CGRectMake(0.0f, 0.0f, 1.0f, height);
UIGraphicsBeginImageContext(r.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, r);
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}
2、然后就可以设置了
UIImage* searchBarBg = [self GetImageWithColor:[UIColor clearColor] andHeight:32.0f];
//设置背景图片
[_searchBar setBackgroundImage:searchBarBg];
//设置背景色
[_searchBar setBackgroundColor:[UIColor clearColor]];
//设置文本框背景
[_searchBar setSearchFieldBackgroundImage:searchBarBg forState:UIControlStateNormal];
OK,这样就大功告成了！
其他设置
1、设置字体颜色、默认字体颜色等
UITextField *searchField = [_searchBar valueForKey:@"_searchField"];
searchField.textColor = [UIColor whiteColor];
[searchField setValue:[UIColor whiteColor] forKeyPath:@"_placeholderLabel.textColor"];
2、修改放大镜
UIImage *image = [UIImage imageNamed:@"cl_tab2_gray"];
UIImageView *iconView = [[UIImageView alloc] initWithImage:image];
iconView.frame = CGRectMake(0, 0, image.size.width , image.size.height);
searchField.leftView = iconView;