按下 UISearchBar x 按钮

问题描述

按下x"按钮时如何处理事件?

How handle the event when press the 'x' button?

我尝试了这种方法，但不起作用.

I try this method but not works.

-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{

}

推荐答案

我不认为有一个简单的方法可以连接到 X 按钮.

I don't think there's an easy way to hook into the X button.

但是，您可以直接了解它的结果:清除文本.

However, you can hook into its direct consequence: cleared text.

试试这个:

func searchBar(searchBar: UISearchBar, textDidChange searchText: String) {
    if searchText == "" {
        print("UISearchBar.text cleared!")
    }
}

副作用是当您手动清除文本时也会调用它.

The side effect is this also gets called when you manually clear your text.

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