我目前正在尝试在 ios 中使用 tableview 和 searchbar 以编程方式创建一个 searchview。表格视图按预期工作，但搜索栏位于屏幕左侧，只有最后一个像素可见。请告诉我我错在哪里。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
//init array item for table view
self.timeZoneNames = [NSMutableArray array];
for(int i = 0; i < 100; i++)
{
[self.timeZoneNames addObject:[NSString stringWithFormat:@"a %d", i]];
}
//init rectangel that store table view's frame
UIScreen *mainScreen;
CGRect rect = CGRectMake(0, 44, [mainScreen applicationFrame].size.width,[mainScreen applicationFrame].size.height);
//init search bar
UISearchBar *search = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, [mainScreen applicationFrame].size.width, 44)];
//init search controller that handle search bar
//UISearchDisplayController *searchController = [[UISearchDisplayController alloc] initWithSearchBar:search contentsController:self];
//searchController.delegate = self;
//searchController.searchResultsDataSource = self;
//UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [mainScreen applicationFrame].size.width, 44)];
//[view addSubview:search];
//init table view, add search bar on top of table view and reload data
UITableView *table = [[UITableView alloc] initWithFrame:rect style:UITableViewStylePlain];
table.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
table.dataSource = self;
table.delegate = self;
//table.tableHeaderView = search;
[table reloadData];
//set table view to be this controller's view
//self.view = table;
self.view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [mainScreen applicationFrame].size.width, [mainScreen applicationFrame].size.height)];
self.view.backgroundColor = [UIColor blackColor];
[self.view addSubview:table];
[self.view addSubview:search];
}