自定义UISearchBar 适配IOS6和IOS7

#import <UIKit/UIKit.h>
#define kBgTextFieldImageName @"search_bar_bg.png"
@interface MySearchBar : UISearchBar <UISearchBarDelegate>
- (void)changeBarTextfieldWithColor:(UIColor *)color bgImageName:(NSString *)bgImageName;
- (void)changeBarCancelButtonWithColor:(UIColor *)textColor bgImageName:(NSString *)bgImageName;
@end

#import "MySearchBar.h"
#import "CommonMethods.h"

@implementation MySearchBar

- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
UIColor *color = [UIColor colorWithRed:255/255.0 green:128/255.0 blue:0.0 alpha:1];
[self changeBarTextfieldWithColor: color bgImageName: kBgTextFieldImageName];
[self changeBarCancelButtonWithColor:[UIColor whiteColor] bgImageName: nil];
}
return self;
}

- (void)changeBarTextfieldWithColor:(UIColor *)color bgImageName:(NSString *)bgImageName
{
self.tintColor=color;

UITextField *textField;
if ([[[UIDevice currentDevice] systemVersion] floatValue] > 6.1f) {
for (UIView *subv in self.subviews) {
for (UIView* view in subv.subviews) {
if ([view isKindOfClass:NSClassFromString(@"UISearchBarTextField")]) {
textField = (UITextField*)view;
textField.layer.borderWidth=1;
textField.layer.cornerRadius=6;
textField.layer.borderColor=color.CGColor;
break;
}
}
}
}else{
for (UITextField *subv in self.subviews) {
if ([subv isKindOfClass:[UITextField class]]) {
textField = (UITextField*)subv;
break;
}
}
}

// 设置文本框背景
NSArray *subs = self.subviews;
if ([[[UIDevice currentDevice] systemVersion] floatValue]  > 6.1f) { // ios 7
for (int i = 0; i < [subs count]; i++) {
UIView* subv = (UIView*)[self.subviews objectAtIndex:i];
for (UIView* subview in subv.subviews) {
if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
{
[subview setHidden:YES];
[subview removeFromSuperview];
break;
}
}
}
}else{
for (int i = 0; i < [subs count]; i++) {
UIView* subv = (UIView*)[self.subviews objectAtIndex:i];
if ([subv isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
{
[subv removeFromSuperview];
break;
}
}
}

UIImage *searchBarBgImage = [CommonMethods imageWithFileName: bgImageName scale:2 edgeInsets:UIEdgeInsetsMake(10, 10, 10, 10)];
[textField setBackground:searchBarBgImage];
}

- (void)changeBarCancelButtonWithColor:(UIColor *)textColor bgImageName:(NSString *)bgImageName
{
for (UIView *searchbuttons in self.subviews)
{

if ([searchbuttons isKindOfClass:[UIButton class]]) // ios7以下
{
UIButton *cancelButton = (UIButton*)searchbuttons;
cancelButton.enabled = YES;
[cancelButton setTitleColor:textColor forState:UIControlStateNormal];
[cancelButton setTitleColor:textColor forState:UIControlStateSelected];
if (bgImageName)
{
[cancelButton setBackgroundImage:[UIImage imageNamed:bgImageName] forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:bgImageName] forState:UIControlStateSelected];
}
break;
}
}
}

@end