iOS 中 UITextfield 的自动完成 [英] AutoComplete for UITextfield in iOS
问题描述
我正在开发新的 iOS 应用程序.在那个应用程序中，我有 5 个 UITextFields，它们是1.第一兴趣，第二兴趣最多5个兴趣.
I am working on new iOS application. In that app, I have 5 UITextFields and those are 1. first interest, second interest upto 5 interests.
我需要为这 5 个 UITextField 添加自动完成功能.我在谷歌上搜索了一天.我得到了一些论坛和教程.但我什至也尝试过使用 Github 链接.
I need to add Autocomplete for those 5 UITextFields. I have searched google for one day. I got some forums and tutorial for that. But I even have tried with Github links also.
根据我的要求，我有一组从我的服务器获取的数据.在那个数组中，我有咖啡、板球等数据.这是自动完成数据.每当用户在 UITextField 中输入文本时，我都需要显示该数组，如果它与我的数据数组相关，则需要在该 UITextFields 下方显示.
According to my requirement, I have an array of data which is getting from my server. In that array, I have data like, coffee, cricket, etc. That is Autocomplete data. I need to display that array whenever user entered text in UITextField, if its related to my array of data, need to display below of that UITextFields.
为此，我使用了以下代码.
For that purpose i used following code.
**//搜索文本字段中的字符串
**// String in Search textfield
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
NSString *substring = [NSString stringWithString:textField.text];
substring = [substring stringByReplacingCharactersInRange:range withString:string];
[self searchAutocompleteEntriesWithSubstring:substring];
return YES;
}
**
//从搜索文本字段中获取字符串并将其与自动完成数组进行比较
// Take string from Search Textfield and compare it with autocomplete array
- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring {
// Put anything that starts with this substring into the autoCompleteArray
// The items in this array is what will show up in the table view
[autoCompleteArray removeAllObjects];
NSLog(@"autoCompleteArray %@",autoCompleteArray);
for(NSString *curString in elementArray) {
NSRange substringRangeLowerCase = [curString rangeOfString:[substring lowercaseString]];
NSRange substringRangeUpperCase = [curString rangeOfString:[substring uppercaseString]];
if (substringRangeLowerCase.length != 0 || substringRangeUpperCase.length != 0) {
[autoCompleteArray addObject:curString];
}
}
autoCompleteTableView.hidden = NO;
[autoCompleteTableView reloadData];
}
我在 ViewDidLoad 方法中将 UITableView 创建为 AutocompleteTableview.
And I created UITableView as AutocompleteTableview in ViewDidLoad method.
**问题是，如果我将文本输入为假设c"，则从我的数据数组中显示在 tableview 中包含为c"字母的任何文本.但是，如果我输入coff"，则该 UITableView 中不会显示任何数据.还有如何验证哪个 UITextField 用户在 tableviewdidselectrowatindexpath 委托方法中单击.我尝试为那些 UITextFields 分配标签，但它只在 UITextFields 委托方法中工作，而不是在其他地方.所以，每当我从 UITableView 中选择数据时，首先 UITextField 只取数据而不是其他 UITextField.
**Issue is, if I type text as suppose "c", from my array of data displaying whatever text contains as "c" letter in tableview. But, if i typed "coff" no data displaying in that UITableView. Also how to validate which UITextField user clicking in tableviewdidselectrowatindexpath delegate method. I tried with assigning tag for those UITextFields, but its working in UITextFields delegate methods only, not in other place. so, whenever i selected data from UITableView, first UITextField only taking data not other UITextField.
请提供您宝贵的建议，这是在iOS中为多个UITextfields显示UITextfields的自动完成以及如何处理UITableView以显示数据的最佳方式.如果我的内容有任何错误，请原谅我，并提供您宝贵的建议以解决此问题.
Please give your valuable suggestion, which is the best way to display the autocomplete for UITextfields in iOS for multiple UITextfields and how to handle UITableView for displaying data. If anything mistakes in my content forgive me and please provide your valuable suggestions to fix this issue.
谢谢****
推荐答案
取两个全局数组
NSMutableArray *muary_Interest_Main;
NSMutableArray *muary_Interest_Sub;
IN viewDidLoad 方法
IN viewDidLoad Method
muary_Interest_Main = [[NSMutableArray alloc]initWithObjects:@"Cricket",@"Dancing",@"Painting",@"Swiming",@"guitar",@"movie",@"boxing",@"drum",@"hockey",@"chessing",@"gamming",
@"hunting",@"killing",@"shoping",@"jamm"@"zooming", nil];
muary_Interest_Sub = [[NSMutableArray alloc]init];
tbl_Search = [[UITableView alloc] initWithFrame:
CGRectMake(4, 200, 320, 120) style:UITableViewStylePlain];
tbl_Search.delegate = self;
tbl_Search.dataSource = self;
tbl_Search.scrollEnabled = YES;
[self.tbl_Search registerClass:[UITableViewCell class] forCellReuseIdentifier:@"CellIdentifier"];
[self.view addSubview:self.tbl_Search];
[tbl_Search setHidden:TRUE];
现在在文本字段委托中编写以下代码.
Now write a below code in textfield delegates.
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
NSLog(@"%d",textField.tag);
int_TextFieldTag = textField.tag;
[self searchText:textField replacementString:@"Begin"];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
tbl_Search.hidden = TRUE;
return YES;
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
tbl_Search.hidden = TRUE;
}
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
[self searchText:textField replacementString:string];
return YES;
}
编写搜索文本的方法
-(void) searchText:(UITextField *)textField replacementString:(NSString *)string
{
if(int_TextFieldTag == 1)
{
tbl_Search.frame = CGRectMake(4, 200, 320, 120);
}
else if(int_TextFieldTag == 2)
{
tbl_Search.frame = CGRectMake(4, 248, 320, 120);
}
else if(int_TextFieldTag == 3)
{
tbl_Search.frame = CGRectMake(4, 268, 320, 120);
}
else if(int_TextFieldTag == 4)
{
tbl_Search.frame = CGRectMake(4, 268, 320, 120);
}
else
{
tbl_Search.frame = CGRectMake(4, 268, 320, 120);
}
NSString *str_Search_String=[NSString stringWithFormat:@"%@",textField.text];
if([string isEqualToString:@"Begin"])
str_Search_String=[NSString stringWithFormat:@"%@",textField.text];
else if([string isEqualToString:@""])
str_Search_String = [str_Search_String substringToIndex:[str_Search_String length] - 1];
else
str_Search_String=[str_Search_String stringByAppendingString:string];
muary_Interest_Sub=[[NSMutableArray alloc] init];
if(str_Search_String.length>0)
{
NSInteger counter = 0;
for(NSString *name in muary_Interest_Main)
{
NSRange r = [name rangeOfString:str_Search_String options:NSCaseInsensitiveSearch];
if(r.length>0)
{
[muary_Interest_Sub addObject:name];
}
counter++;
}
if (muary_Interest_Sub.count > 0)
{
NSLog(@"%@",muary_Interest_Sub);
tbl_Search.hidden = FALSE;
[self.tbl_Search reloadData];
}
else
{
tbl_Search.hidden = TRUE;
}
}
else
{
[tbl_Search setHidden:TRUE];
}
}
Tableview 委托方法
Tableview Delegates methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [muary_Interest_Sub count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CellIdentifier"];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"CellIdentifier"];
//cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
;
}
cell.textLabel.text = [muary_Interest_Sub objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.view endEditing:YES];
if(int_TextFieldTag == 1)
{
txt1.text=[muary_Interest_Sub objectAtIndex:indexPath.row];
}
else if(int_TextFieldTag == 2)
{
txt2.text=[muary_Interest_Sub objectAtIndex:indexPath.row];
}
else if(int_TextFieldTag == 3)
{
txt3.text=[muary_Interest_Sub objectAtIndex:indexPath.row];
}
else if(int_TextFieldTag == 4)
{
txt4.text=[muary_Interest_Sub objectAtIndex:indexPath.row];
}
else
{
txt5.text=[muary_Interest_Sub objectAtIndex:indexPath.row];
}
}
这也适用于文本字段的退格.试试这个.希望这能满足您的要求.
This also works on backspace of textfield. Try this. Hope this will suit your requirements.
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