ios - UISearchBar范围栏在iOS7中不可见

Question

使用以下代码，合并范围栏不可见(按钮有效，但不可见-只是黑色空间)

UISearchBar* searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, self.tableView.frame.size.width, 44 + (_showScope?40:0));];
searchBar.barStyle = UIBarStyleBlack;

searchBar.scopeButtonTitles = [NSArray arrayWithObjects:@"string1", @"string2", nil];
searchBar.showsScopeBar = YES;
searchBar.delegate = self;

self.tableView.tableHeaderView = searchBar;

在iOS6中工作正常。有任何想法吗？

Answer 1

这似乎是一种解决方法:

UISearchBar* searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero];
searchBar.barStyle = UIBarStyleBlack;

searchBar.scopeButtonTitles = [NSArray arrayWithObjects:@"string1", @"string2", nil];
searchBar.showsScopeBar = YES;
searchBar.delegate = self;

self.tableView.tableHeaderView = searchBar;

searchBar.frame = CGRectMake(0, 0, self.tableView.frame.size.width, 44 + (_showScope?40:0));

真好!