UISearchBar背景透明,去掉背景,自定义背景(转)

seachBar=[[ UISearchBar alloc] init];

//修改搜索框背景

seachBar.backgroundColor =[UIColor clearColor ];

//去掉搜索框背景

//1.

[[searchbar. subviews objectAtIndex : 0 ]removeFromSuperview ];

//2.

for ( UIView *subview in seachBar. subviews) 

{  

if ([subview isKindOfClass :NSClassFromString ( @"UISearchBarBackground" )])

{  

[subview removeFromSuperview ];  

break;  

}  

} 

//3自定义背景

UIImageView *imageView = [[UIImageView alloc ] initWithImage :[UIImage imageNamed : @"40-di.png" ]];

    [mySearchBar insertSubview:imageView atIndex: 1];

    [imageView release];

//4输入搜索文字时隐藏搜索按钮，清空时显示

- ( BOOL)searchBarShouldBeginEditing:( UISearchBar *)searchBar {  

searchBar. showsScopeBar = YES;  

[searchBar sizeToFit];  

[searchBar setShowsCancelButton : YES animated : YES ];  

return YES ;  

}  

- ( BOOL)searchBarShouldEndEditing:( UISearchBar *)searchBar {  

searchBar. showsScopeBar = NO;  

[searchBar sizeToFit];  

[searchBar setShowsCancelButton : NO animated : YES ];  

return YES ;  

}  

//改变搜索按钮文字

// 改变UISearchBar 取消按钮字体

for( id cc in [searchBar subviews])

    {

if ([cc isKindOfClass :[ UIButton class ]])

        {

            UIButton *btn = ( UIButton *)cc;

            [btn setTitle : @" 搜索 "   forState :UIControlStateNormal ];

        }

    }