UISearchBar未显示范围栏

Question

我使用以下代码显示UISearchBar带有范围栏的a.

UISearchBar *searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0, 0, 320, 45)];
searchBar.barStyle = UIBarStyleDefault;
searchBar.showsCancelButton = NO;
searchBar.autocorrectionType = UITextAutocorrectionTypeNo;
searchBar.autocapitalizationType = UITextAutocapitalizationTypeNone;

searchBar.scopeButtonTitles = [NSArray arrayWithObjects:@"One", @"Two", nil];
searchBar.showsScopeBar = YES;

self.tableView.tableHeaderView = searchBar;

[searchBar release];

但是,范围栏永远不会显示.为什么没有显示它,我该如何解决这个问题？

Answer 1

在initWithFrame:CGRectMake(0, 0, 320, 45),高度只是搜索栏的高度,不包括范围栏.尝试替换以下内容:

UISearchBar *searchBar = [[UISearchBar alloc]initWithFrame:CGRectMake(0, 0, 320, 90)];