UISearchBar背景透明,去掉背景,自定義背景

//初始化一個搜索框
  UISeachBar *seachBar=[[UISearchBar alloc] init];
//修改搜索框背景
  seachBar.backgroundColor=[UIColor clearColor];
//1.去掉搜索框背景
[[searchbar.subviews objectAtIndex:0] removeFromSuperview];

//2.
for (UIView *subview in seachBar.subviews)
{
if ([subview isKindOfClass:NSClassFromString(@”UISearchBarBackground”)])
{
[subview removeFromSuperview];
break;
}
}

//3自定義背景
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@”40-di.png”]];
[mySearchBar insertSubview:imageView atIndex:1];
[imageView release];

//4輸入搜索文字時隱藏搜索按鈕，清空時顯示
- (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;
}

//5 改變搜索按鈕文字 改變UISearchBar取消按鈕字體
for(id cc in [searchBar subviews])
{
if([cc isKindOfClass:[UIButton class]])
{
UIButton btn = (UIButton )cc;
[btn setTitle:@”搜索” forState:UIControlStateNormal];
}
}