在我的iOS应用中,我希望在UINavigationController
中设置右侧搜索按钮,当用户触摸该按钮时,会显示UISearchBar
上方的UITableView
。
我想在加载视图时隐藏UISearchBar
,然后在用户点击UISearchDisplayController
中的取消按钮时再次隐藏。
我到处搜索,找不到一个例子。帮助
答案 0 :(得分:1)
有一个很好的示例项目here。关键点是:
1.在显示视图之前隐藏搜索栏:
-(void)viewWillAppear:(BOOL)animated {
[self hideSearchBar];
}
-(void)hideSearchBar {
CGRect newBounds = self.tableView.bounds;
newBounds.origin.y = newBounds.origin.y + self.searchBar.bounds.size.height;
self.tableView.bounds = newBounds;
}
2.在搜索按钮的操作目标上,显示搜索栏
// make the search bar visible
// code example from https://github.com/versluis/Table-Seach-2013 to deal with iOS 7 behavior
-(IBAction)displaySearchBar:(id)sender {
[self.tableView scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:YES];
NSTimeInterval delay;
if (self.tableView.contentOffset.y >1000) delay = 0.4;
else delay = 0.1;
[self performSelector:@selector(activateSearch) withObject:nil afterDelay:delay];
}
- (void)activateSearch
{
[self.tableView scrollRectToVisible:CGRectMake(0, 0, 1, 1) animated:NO];
[self.searchBar becomeFirstResponder];
}
3.最后,单击“取消”时隐藏SearchBar
-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
[self hideSearchBar];
}