textField 检测 文本长度
来源:互联网 发布:域名注册程序 编辑:程序博客网 时间:2024/04/28 09:45
[_groupSearchView.searchBar.textField addTarget:self action:@selector(textFieldValueChanged:) forControlEvents:UIControlEventEditingChanged];- (void)textFieldValueChanged:(UITextField *)textField{ if (textField.text.length > 0) { _groupSearchView.searchBar.deleteButton.hidden = NO; } else { _groupSearchView.searchBar.deleteButton.hidden = YES; _listType = kListType_All; [_groupSearchView.tableView reloadDataWithTotalPage:_helper.allGroupTotalPage currentPage:_helper.allGroupPage]; }}
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string;检测 输入之前的text 以及正在输入的text。