自定义UISearchBar 适配IOS6和IOS7 修改放大镜图标 修改光标颜色 修改边框颜色 placeholder颜色 设置文本框背景

文章转自：http://blog.youkuaiyun.com/zhang_red/article/details/21447535

总结下常用的几点：

1、修改放大镜图标

[self setImage:[UIImage imageNamed:@"search_icon"] forSearchBarIcon:UISearchBarIconSearchstate:UIControlStateNormal];  

2、修改光标颜色

self.tintColor = [UIColorwhiteColor];

3、修改边框颜色（textField对应下文）

textField.layer.borderColor = [[UIColorclearColor]CGColor];

4、//placeholder颜色（必须先设置placeholder的内容，再添此行代码）

[textFieldsetValue:[UIColorwhiteColor] forKeyPath:@"_placeholderLabel.textColor"];

5、//字体颜色（textField对应下文）

[textFieldsetTextColor:[UIColorwhiteColor]];

6、// 设置文本框背景

[textFieldsetBackground:searchBarBgImage];

[textField setBackgroundColor:[UIColorcolorWithPatternImage:searchBarBgImage]];

MySearchBar.h

[objc]  view plain copy

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

MySearchBar.m

[objc]  view plain copy

1. #import "MySearchBar.h"  
2. #import "CommonMethods.h"  
3.   
4. @implementation MySearchBar  
5.   
6. - (id)initWithFrame:(CGRect)frame  
7. {  
8.     self = [super initWithFrame:frame];  
9.     if (self) {  
10.         UIColor *color = [UIColor colorWithRed:255/255.0 green:128/255.0 blue:0.0 alpha:1];  
11.         [self changeBarTextfieldWithColor: color bgImageName: kBgTextFieldImageName];  
12.         [self changeBarCancelButtonWithColor:[UIColor whiteColor] bgImageName: nil nil];  
13.     }  
14.     return self;  
15. }  
16.   
17. - (void)changeBarTextfieldWithColor:(UIColor *)color bgImageName:(NSString *)bgImageName  
18. {  
19.     self.tintColor=color;  
20.       
21.     UITextField *textField;  
22.     if ([[[UIDevice currentDevice] systemVersion] floatValue] > 6.1f) {  
23.         for (UIView *subv in self.subviews) {  
24.             for (UIView* view in subv.subviews) {  
25.                 if ([view isKindOfClass:NSClassFromString(@"UISearchBarTextField")]) {  
26.                     textField = (UITextField*)view;  
27.                     textField.layer.borderWidth=1;  
28.                     textField.layer.cornerRadius=6;  
29.                     textField.layer.borderColor=color.CGColor;  
30.                     break;  
31.                 }  
32.             }  
33.         }  
34.     }else{  
35.         for (UITextField *subv in self.subviews) {  
36.             if ([subv isKindOfClass:[UITextField class]]) {  
37.                 textField = (UITextField*)subv;  
38.                 break;  
39.             }  
40.         }  
41.     }  
42.       
43.     // 设置文本框背景  
44.     NSArray *subs = self.subviews;  
45.     if ([[[UIDevice currentDevice] systemVersion] floatValue]  > 6.1f) { // ios 7  
46.         for (int i = 0; i < [subs count]; i++) {  
47.             UIView* subv = (UIView*)[self.subviews objectAtIndex:i];  
48.             for (UIView* subview in subv.subviews) {  
49.                 if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])  
50.                 {  
51.                     [subview setHidden:YES];  
52.                     [subview removeFromSuperview];  
53.                     break;  
54.                 }  
55.             }  
56.         }  
57.     }else{  
58.         for (int i = 0; i < [subs count]; i++) {  
59.             UIView* subv = (UIView*)[self.subviews objectAtIndex:i];  
60.             if ([subv isKindOfClass:NSClassFromString(@"UISearchBarBackground")])  
61.             {  
62.                 [subv removeFromSuperview];  
63.                 break;  
64.             }  
65.         }  
66.     }  
67.       
68.     UIImage *searchBarBgImage = [CommonMethods imageWithFileName: bgImageName scale:2 edgeInsets:UIEdgeInsetsMake(10, 10, 10, 10)];  
69.     [textField setBackground:searchBarBgImage];  
70. }  
71.   
72. - (void)changeBarCancelButtonWithColor:(UIColor *)textColor bgImageName:(NSString *)bgImageName  
73. {  
74. if ([[[UIDevice currentDevice] systemVersion] floatValue]  > 6.1f) { // ios 7 
    

75. UIButton *cancelButton;

        UIView *topView = self.subviews[0];

        for (UIView *subView in topView.subviews) {

            if ([subView isKindOfClass:NSClassFromString(@"UINavigationButton")]) {

                cancelButton = (UIButton *)subView;

            }

        }

        if (cancelButton) {

            [cancelButton setTitle:@"取消" forState:UIControlStateNormal];

            [cancelButton setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];

            [cancelButton setBackgroundImage:[UIImageimageNamed:@"search_cancelbutton"] forState:UIControlStateNormal];

        }

    
    
76. }

77. 
    

    
    
78. 
    
79.     for (UIView *searchbuttons in self.subviews)  
80.     {  
81.           
82.         if ([searchbuttons isKindOfClass:[UIButton class]]) // ios7以下  
83.         {  
84.             UIButton *cancelButton = (UIButton*)searchbuttons;  
85.             cancelButton.enabled = YES;  
86.             [cancelButton setTitleColor:textColor forState:UIControlStateNormal];  
87.             [cancelButton setTitleColor:textColor forState:UIControlStateSelected];  
88.              if (bgImageName)  
89.              {  
90.                  [cancelButton setBackgroundImage:[UIImage imageNamed:bgImageName] forState:UIControlStateNormal];  
91.                  [cancelButton setBackgroundImage:[UIImage imageNamed:bgImageName] forState:UIControlStateSelected];  
92.              }  
93.             break;  
94.         }  
95.     }  
96. }  
97.   
98. @end