iOS中的UITextfield的自动完成

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和那些是 1.第一兴趣，第二兴趣高达5兴趣。iOS中的UITextfield的自动完成

我需要为这5个UITextField添加自动完成功能。我在谷歌搜索了一天。我有一些论坛和教程。但我甚至尝试过使用Github链接。

根据我的要求，我有一个从我的服务器获取的数据数组。在这个数组中，我有数据，如咖啡，板球等。这是自动完成数据。每当用户在UITextField中输入文本时，如果与我的数据数组相关，需要在该UITextFields的下方显示该数组，则需要显示该数组。

为此我使用了以下代码。

** //在搜索文本框字符串

- (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; 
}

//从搜索文本字段以字符串，并将其与自动完成阵列比较

- (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]; 
     }

我创建的UITableView为AutocompleteTableview in ViewDidLoad方法。

**问题是，如果我输入文本为假设“c”，从我的数组数组中显示任何文本在tableview中包含“c”字母的数据。但是，如果我在那个UITableView中键入“coff”没有数据显示。还有如何验证哪个UITextField用户点击了tableviewdidselectrowatindexpath委托方法。我试着为这些UITextFields分配标签，但它只在UITextFields委托方法中工作，而不是在其他地方工作。所以，每当我从UITableView中选择数据，第一个UITextField只取数据而不是其他UITextField。

请给出宝贵的建议，这是在iOS中为多个UITextfields显示UITextfields的自动完成的最佳方式，以及如何处理显示数据的UITableView。如果我的内容中有任何错误可以原谅我，请提供宝贵的建议以解决此问题。

感谢****

来源

2014-09-30 Anilkumar iOS developer

您是否尝试过任何回答四位，或只是张贴问题？ – Maul 2014-09-30 07:19:54

您输入**“coff”或“coff”？ – abhishekkharwar 2014-09-30 07:54:03

它的coff只，而我发布的问题，我让它大胆这就是为什么它显示出一些错误 – 2014-09-30 08:03:56

举两个全局数组

NSMutableArray *muary_Interest_Main; 
NSMutableArray *muary_Interest_Sub;

在viewDidLoad方法

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];

现在写在文本框代表一个下面的代码。

- (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; 
}

写方法搜索文本

-(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]; 

    } 

}

泰伯维委托方法

- (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]; 
} 

}

这也适用于文本框的退格。试试这个。希望这会适合您的要求。

来源

2014-09-30 06:43:12 Maul

您的疑问是什么？ – Maul 2014-09-30 07:20:53

txt_Interest是您的texfield名称，如果用户开始在该字段中输入，那么然后该方法将调用 – Maul 2014-09-30 07:22:45

如果您想要对所有textFiled进行相同的操作并使用相同的数组，则不需要检查条件只是调用方法 – Maul 2014-09-30 07:28:08

- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring{ 

    //Assume this array is the autocomplete array for which you get data from server 

    NSMutableArray *autoCompleteArray = [[NSMutableArray alloc] initWithObjects:@"Coffee",@"Cricket",@"Volleyboll",nil]; 

    text = [text stringByReplacingOccurrencesOfString:@" " withString:@""]; 

    // This is to create predicate filter for getting matched text 

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF beginswith[c] %@",text]; 

// store matched data for autocompletion in results array and reload data in your tableview based on this array's data 

    NSArray *resultArray = [[NSArray alloc] initWithArray:[autoCompleteArray filteredArrayUsingPredicate:predicate]]; 
}

来源

2014-09-30 06:33:48

感谢您的快速解决方案，这是整体解决方案？ – 2014-09-30 10:20:00

这是用于自动完成搜索并将其显示在您的tableview中的逻辑。 – 2014-09-30 10:32:33

这不是工作？ – 2014-09-30 10:32:58

您可以使用下面的链接，描述了如何使用自动完成。我尝试了AutocompletionTableview（第二个链接），它完美地工作。

https://github.com/EddyBorja/MLPAutoCompleteTextField

https://github.com/keyf/AutocompletionTableView

来源

2014-09-30 06:39:01

这里是SWIFT 3自动完成功能文本框例如

图片看起来像波纹管
创建一个项目&添加一个文本框。连接到视图控制器命名txtAutoComplete

查看控制器代码波纹管

import UIKit 

    class ViewController: UIViewController ,UITextFieldDelegate{ 


    @IBOutlet weak var txtAutoComplete: UITextField! 

    var autoCompletionPossibilities = ["01921687433", "01553377642", "0155776622"] 
    var autoCompleteCharacterCount = 0 
    var timer = Timer() 


    override func viewDidLoad() { 
    super.viewDidLoad() 


     txtAutoComplete.delegate = self 
} 





    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool { //1 
     var subString = (textField.text!.capitalized as NSString).replacingCharacters(in: range, with: string) 
subString = formatSubstring(subString: subString) 

    if subString.characters.count == 0 { 
    // 3 when a user clears the textField 
    resetValues() 
     } else { 
    searchAutocompleteEntriesWIthSubstring(substring: subString) 
    } 
    return true 
    } 

func formatSubstring(subString: String) -> String { 
    let formatted = String(subString.characters.dropLast(autoCompleteCharacterCount)).lowercased().capitalized //5 
    return formatted 
} 

func resetValues() { 
    autoCompleteCharacterCount = 0 
    txtAutoComplete.text = "" 
    } 

    func searchAutocompleteEntriesWIthSubstring(substring: String) { 
    let userQuery = substring 
    let suggestions = getAutocompleteSuggestions(userText: substring) 

    if suggestions.count > 0 { 
     timer = .scheduledTimer(withTimeInterval: 0.01, repeats: false, block: { (timer) in //2 
     let autocompleteResult = self.formatAutocompleteResult(substring: substring, possibleMatches: suggestions) 
      self.putColourFormattedTextInTextField(autocompleteResult: autocompleteResult, userQuery : userQuery) 
      self.moveCaretToEndOfUserQueryPosition(userQuery: userQuery) 
     }) 

    } else { 
     timer = .scheduledTimer(withTimeInterval: 0.01, repeats: false, block: { (timer) in //7 
      self.txtAutoComplete.text = substring 
     }) 
     autoCompleteCharacterCount = 0 
    } 

} 

func getAutocompleteSuggestions(userText: String) -> [String]{ 
    var possibleMatches: [String] = [] 
    for item in autoCompletionPossibilities { //2 
     let myString:NSString! = item as NSString 
     let substringRange :NSRange! = myString.range(of: userText) 

     if (substringRange.location == 0) 
     { 
      possibleMatches.append(item) 
     } 
    } 
    return possibleMatches 
} 

func putColourFormattedTextInTextField(autocompleteResult: String, userQuery : String) { 
     let colouredString: NSMutableAttributedString = NSMutableAttributedString(string: userQuery + autocompleteResult) 
colouredString.addAttribute(NSForegroundColorAttributeName, value: UIColor.green, range: NSRange(location: userQuery.characters.count,length:autocompleteResult.characters.count)) 
self.txtAutoComplete.attributedText = colouredString 
} 

func moveCaretToEndOfUserQueryPosition(userQuery : String) { 
    if let newPosition = self.txtAutoComplete.position(from: self.txtAutoComplete.beginningOfDocument, offset: userQuery.characters.count) { 
    self.txtAutoComplete.selectedTextRange = self.txtAutoComplete.textRange(from: newPosition, to: newPosition) 
} 
     let selectedRange: UITextRange? = txtAutoComplete.selectedTextRange 
txtAutoComplete.offset(from: txtAutoComplete.beginningOfDocument, to: (selectedRange?.start)!) 
    } 

func formatAutocompleteResult(substring: String, possibleMatches: [String]) -> String { 
    var autoCompleteResult = possibleMatches[0] 
autoCompleteResult.removeSubrange(autoCompleteResult.startIndex..<autoCompleteResult.index(autoCompleteResult.startIndex, offsetBy: substring.characters.count)) 
autoCompleteCharacterCount = autoCompleteResult.characters.count 
return autoCompleteResult 
    } 
    }

的源代码提供给GitHub.GitHub链接：https://github.com/enamul95/AutoCompleteTextField

来源

2017-08-20 15:13:01

iOS中的UITextfield的自动完成

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