/** 取消searchBar背景色 */

- (UIImage *)imageWithColor:(UIColor *)color size:(CGSize)size

{

CGRect rect = CGRectMake(0, 0, size.width, size.height);

UIGraphicsBeginImageContext(rect.size);

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetFillColorWithColor(context, [color CGColor]);

CGContextFillRect(context, rect);

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return image;

}

然后在viewdidload里面

/** 设置背景图片 */

[_searchBar setBackgroundImage:[UIImage imageNamed:@"red_nav_bar"]];   //这里图片的颜色和导航栏一样

/** 设置背景色 */

[_searchBar setBackgroundColor:[UIColor redColor]];

/** 设置文本框背景 *

[_searchBar setSearchFieldBackgroundImage:[UIImage imageNamed:@"imageView"] forState:UIControlStateNormal];

//更改search圆角

UITextField *searchField = [self.searchBar valueForKey:@"searchField"];

if (searchField) {

[searchField setBackgroundColor:[UIColor whiteColor]];

searchField.layer.cornerRadius = 14.0f;

searchField.layer.borderColor = [UIColor colorWithRed:247/255.0 green:75/255.0 blue:31/255.0 alpha:1].CGColor;

searchField.layer.borderWidth = 1;

searchField.layer.masksToBounds = YES;

}