如何在UISearchDisplayController的UISearchBar中更改"Cancel"按钮，"No Results"标签的字符串？

Question

如何更改"取消"按钮，"无结果"标签的字符串在UISearchBar的UISearchDisplayController?

Answer 1

我自己解决了。

取消按钮>

(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller {
    [controller.searchBar setShowsCancelButton:YES animated:NO];
    for (UIView *subview in [controller.searchBar subviews]) {
        if ([subview isKindOfClass:[UIButton class]]) {
            [(UIButton *)subview setTitle:@"_____" forState:UIControlStateNormal];
        }
    }
}

No Results Text>

- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView {
    if (!isChangedNoResults) {
        if ([contactManager.filteredPeople count] == 0) {
            [NSTimer scheduledTimerWithTimeInterval:0.01 target:self selector:@selector(changeNoResultsTextToKorean:) userInfo:nil repeats:YES];
        }
    }
}

使用定时器和bool值。如果没有定时器，当"no Results"先显示时，不能更改文本。

- (void)changeNoResultsTextToKorean:(NSTimer *)timer {
    if (isChangedNoResults) {
        [timer invalidate];
    }
    else {
        for (UIView *subview in [self.searchDisplayController.searchResultsTableView subviews]) {
            if ([subview isKindOfClass:[UILabel class]]) {
                UILabel *targetLabel = (UILabel *)subview;
                if ([targetLabel.text isEqualToString:@"No Results"]) {
                    NSLog(@"Changed!");
                    [targetLabel setText:@"_____"];
                    isChangedNoResults = YES;
                    [timer invalidate];
                }
            }
        }
    }
}

Answer 2

要更改"no result"文本，您可以使用:

[self.searchDisplayController setValue:@"my no result text"  forKey: @"noResultsMessage"];

我刚刚在iOS8上测试过

Answer 3

感谢ChangUZ找到了解决办法。现在，为了改进，不需要计时器来更改"No Results"标签。

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    dispatch_async(dispatch_get_main_queue(), ^(void) {
        for (UIView *v in controller.searchResultsTableView.subviews) {
            if ([v isKindOfClass:[UILabel self]]) {
                ((UILabel *)v).text = @"_____";
                break;
            }
        }
    });
    return YES;
}

Answer 4

更改取消按钮文本的简单解决方案:

[self.searchDisplayController.searchBar setValue:@"custom text" forKey:@"cancelButtonText"];

在iOS 10中测试