我们App的搜索功能，以前使用系统键盘进行输入中文搜索时，只有当输入完整，点击键盘上的对应词后，才会开始搜索， 现在没按下一个字母，就会触发搜索。
iOS18 searchBar and system keyboard
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Albert Pascual Worldwide Developer Relations.
貌似是Xcode16打包运行在iOS18系统上就会出现这种情况，- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText; 这个代理方法，输入中文时，每次按下拼音 就会触发