问题描述
在我的应用程序中，我添加了一个 UISearchBar.
In my application, I am adding a UISearchBar.
我的意图是启用 UISearch 栏X 按钮"(清除按钮在 UITextField) 始终可见.
My intent is to enable the UISearch Bar "X button"(clear button in UITextField) to be always visible.
我尝试使用下面的代码来尝试制作X 按钮".始终可见.但是，它不起作用.如果我设置 tf.clearButtonMode = UITextFieldViewModeNever，uitextfield<中的清除按钮/a> 不显示.不知道怎么回事?
I have tried using the following code below to try to make the "X Button" be always visible. However, it does not work. If I set tf.clearButtonMode = UITextFieldViewModeNever, the clear button in uitextfield not showing. I am not sure what is wrong?
我非常感谢任何人的帮助.为什么这不起作用?
I would really appreciate anyone's help here. Why is this not working?
for (UIView* v in searchBar.subviews)
{
if ( [v isKindOfClass: [UITextField class]] )
{
UITextField *tf = (UITextField *)v;
tf.delegate = self;
tf.clearButtonMode = UITextFieldViewModeAlways;
break;
}
}
目标:
如果文本长度等于 0，我希望始终显示清除按钮
Goal:
I want to always show the clear button if the text length is equal to 0
- 即如果我不输入任何文字.
推荐答案
UITextField *searchBarTextField = nil;
for (UIView *subview in self.searchBar.subviews)
{
if ([subview isKindOfClass:[UITextField class]])
{
searchBarTextField = (UITextField *)subview;
searchBarTextField.clearButtonMode = UITextFieldViewModeAlways;
break;
}
}
这篇关于如何在uisearchbar中始终显示Xbutton(清除按钮)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！