ios7 左右searchbar在设置cancelButton的title属性

  经 [searchBarsetShowsCancelButton:YES];设置之后默认是“cancel”，想改为中文的

在stackoverflow上參考了非常多方法都没用

这里的关键是要获取到 searchbar中得 cancelButton

通过打印 [searchbar subviews]

得到结果例如以下

(lldb) po [searchBar subviews]

<__NSArrayM 0xd6b0db0>(

<UIView: 0xd6aab30; frame = (0 0; 240 24); clipsToBounds = YES; autoresize = 

+H; layer = <CALayer: 0xd6aab90>>

)

也就是其仅仅有一个subview，在stackoverflow上得到些事实上

这个cancelbutton在更深一层

打印 

[[[searchBar subviews] objectAtIndex:0] subviews]

得到结果：

(lldb) po [[[searchBar subviews] objectAtIndex:0] subviews]

<__NSArrayM 0xd6b0dd0>(

<UISearchBarBackground: 0xd6ab370; frame = (0 0; 240 24); opaque = NO; userInteractionEnabled = NO; layer = <CALayer: 0xd6ab4c0>>,

<UINavigationButton: 0xd6abef0; frame = (0 0; 54 30); opaque = NO; layer = <CALayer: 0xd6ac020>>,

<UISearchBarTextField: 0xd6acbe0; frame = (0 0; 0 0); text = ''; clipsToBounds = YES; opaque = NO; layer = <CALayer: 0xd6acdf0>>

)

也就是这个UINavigationButton。对它进行设置

代码例如以下

ios6和ios7情况不一样，ios7中searchBar得层级多了一层

    if (iOS7) {
        for(UIView *view in  [[[searchBar subviews] objectAtIndex:0] subviews]) {
            if([view isKindOfClass:[NSClassFromString(@"UINavigationButton") class]]) {
                UIButton * cancel =(UIButton *)view;
                [cancel setTitle:@"取消" forState:UIControlStateNormal];
                [cancel  setTintColor:[UIColor blackColor]];
                [cancel.titleLabel setTextColor:[UIColor blackColor]];
                //            [cancel setImage:[UIImage imageNamed:@"cancel.png"] forState:UIControlStateNormal];
            }
            if ([view isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
            {
                [view removeFromSuperview];
            }
            
        }
    }else
    {
        for(UIView *view in  [searchBar subviews]) {
            if([view isKindOfClass:[NSClassFromString(@"UINavigationButton") class]]) {
                UIButton * cancel =(UIButton *)view;
                [cancel setTitle:@"取消" forState:UIControlStateNormal];
                [cancel  setTintColor:[UIColor blackColor]];
                [cancel.titleLabel setTextColor:[UIColor blackColor]];
                cancel.backgroundColor = [UIColor clearColor];
            }
            if ([view isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
            {
                [view removeFromSuperview];
            }
            
        }
    }

能够通过

(lldb) po [searchBar recursiveDescription]  来查看一下searchBar的视图层级

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