UISearchBar背景透明,去掉背景,自定义背景(转)

出自：http://blog.csdn.net/mkhgg/article/details/6640101

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];

    }

}