无法停止搜索栏显示取消按钮

Question

所以当我点击搜索栏时，我试图阻止取消按钮出现。我试过这个 -

[self.searchDisplayController.searchBar setShowsCancelButton: NO animated:NO];
NSLog(@"CANCEL BUTTON : %hhd", self.searchDisplayController.searchBar.showsCancelButton);

并且日志告诉我showsCancelButton的值为0，表示它已关闭。

那是怎么回事？

Answer 1

您可以在“searchDisplayControllerWillBeginSearch”委托方法中设置取消按钮以隐藏，例如：

-(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller{
    controller.searchBar.showsCancelButton = NO;
}

如果您不使用UISearchDisplayController

，也可以使用以下内容

-(void) searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
    //This'll Show The cancelButton with Animation
    [searchBar setShowsCancelButton:NO animated:YES];
}

Answer 2

试试这个，

    - (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar {
        searchBar.showsCancelButton = NO;
        return YES;
    }