UISearchBar 背景图-举一反三-优快云博客

本文链接：https://blog.youkuaiyun.com/james_1010/article/details/8672051

本文介绍了如何自定义UISearchBar的背景图、ScopeBar的背景色以及右侧按钮的颜色。通过遍历subviews并设置相应属性，实现了搜索栏风格的统一调整。同时，针对UISearchBar获取焦点后上移的问题，提出了通过调整frame来避免遮挡导航控制器的方法，但这种方法在焦点切换时需要不断调整frame。

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想去掉UISearchBar的背景图,网上很多文章都介绍:

UISearchBar *mSearchBar;

for (UIView *subview in mSearchBar.subviews) {
                if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) {
                    [subview removeFromSuperview];
                    break;
                }

}

如果想改变ScopeBar的背景图呢?

先把mSearhBar的subviews数组打印出来:
<__NSArrayM 0x800fe60>(
<UISegmentedControl: 0x8096120; frame = (0 0; 320 44); opaque = NO; layer = <CALayer: 0x80961f0>>,
<UISearchBarBackground: 0x8095db0; frame = (0 0; 320 44); userInteractionEnabled = NO; layer = <CALayer: 0x8095e40>>,
<UISearchBarTextField: 0x8093520; frame = (5 6; 310 31); text = ''; clipsToBounds = YES; opaque = NO; layer = <CALayer: 0x808e3e0>>,
<UINavigationButton: 0x8010dd0; frame = (0 0; 48 30); opaque = NO; layer = <CALayer: 0x8010d40>>
)

现在很明了了.

改变ScopeBar背景色:

if ([subview isKindOfClass:NSClassFromString(@"UISegmentedControl")])
        {
            UISegmentedControl *_control = (UISegmentedControl *)subview;
            _control.tintColor = [UIColor grayColor];

        }

改变uisearchbar背景色,不是remove它:

if ([subview isKindOfClass:NSClassFromString(@"UISearchBarBackground")])
        {
             mSearchBar.tintColor = [UIColor grayColor];
        }

如果想改变searchbar右侧的button的话:

for (id tclass in [searchBar subviews])
   {
       if ([tclass isKindOfClass:[UIButton class]])
       {
           UIButton *btn=(UIButton *)tclass;
            btn.tintColor = [UIColor grayColor];
           [btn setTitle:NSLocalizedString(@"Cancel", nil) forState:UIControlStateNormal];//此处为设置button text
       }
   }

ok,运行结果,success~

无焦点: