更改UISearchBar取消按钮标题颜色后，无法更改它的文本。

Question

我使用此代码更改UISearchBar取消按钮标题：

-(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller{
self.searchDisplayController.searchBar.showsCancelButton = YES;
UIView* view=_otsinguRiba.subviews[0];
for (UIView *subView in view.subviews) {
    if ([subView isKindOfClass:[UIButton class]]) {
        UIButton *cancelButton = (UIButton*)subView;

        if (cancelButton) {
        [cancelButton setTitle:@"Test") forState:UIControlStateNormal];
        [cancelButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
        }
    }
}
}

虽然更改文本可以正常工作，但更改颜色并不适用。它保持黑色。

Answer 1

我在一段时间后找到了答案，但我不记得在哪里。这是我用来设置文字颜色的代码。

[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:
                [UIColor redColor],NSForegroundColorAttributeName,
                //[UIColor whiteColor],UITextAttributeTextShadowColor,
                //[NSValue valueWithUIOffset:UIOffsetMake(0, 1)],UITextAttributeTextShadowOffset,
                nil]
        forState:UIControlStateNormal];

Answer 2

您可以利用iOS运行时属性_cancelButton来实现此目的。

UIButton *cancelButton = [self.searchDisplayController.searchBar valueForKey:@"_cancelButton"];
[cancelButton setTitleColor:[UIColor yourColor] forState:UIControlStateNormal];