自动完成UITextField [英] Autocomplete UITextField

问题描述

我要自动填写自订值中的文字栏位

在这里研究过Google和SO UITextField Autocomplete - iPhone SDK

我尝试过：

   - （BOOL）textField：（UITextField *）textField shouldChangeCharactersInRange：（NSRange）range replacementString：（NSString *）string {
 
 if string isEqualToString：@Fac]）{
 _clientField.text = @Factory; 
} 
 
 return YES;问题是我没有输入预测值工厂     / code>，只是输入的值 Fac  
 
 
 
 EDIT 
 
 
 
根据答案尝试这个... 
   - （BOOL）textField：（UITextField *）textField shouldChangeCharactersInRange ：（NSRange）range replacementString：（NSString *）string {
 
 if（[string isEqualToString：@Fac]）{
 _clientField.text = [_clientField.text stringByReplacingCharactersInRange：range 
 withString：@Factory]; 
} 
 
 return NO; 
} 
  
仍然相同
 
 
 
您可以在视图控制器中设置它。 
  _clientField.delegate = self; 
  
此外，您需要使用稍微不同的方法来获取用户看到的文本。类似这样：
   - （BOOL）textField：（UITextField *）textField shouldChangeCharactersInRange：（NSRange）range replacementString：（NSString * ）string {
 NSString * currentString = [textField.text stringByReplacingCharactersInRange：range withString：string]; 
 if（[currentString isEqualToString：@Fac]）{
 textField.text = @Factory; 
 return NO; 
} 
 return YES; 
} 
  
请注意，您可能需要微调这一点，也是用户删除文本时的自动完成。但这应该让你在正确的轨道。
 
I want to auto complete a text field from a custom value

Having researched Google and SO here UITextField Autocomplete - iPhone SDK

I tried this:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

    if ([string isEqualToString:@"Fac"]) {
        _clientField.text = @"Factory";
    }

    return YES;
}
Problem is I get no predicted value entered Factory, just the typed value Fac

EDIT

Tried this based on answers...
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

if ([string isEqualToString:@"Fac"]) {
    _clientField.text = [_clientField.text stringByReplacingCharactersInRange:range
                                                   withString:@"Factory"];
  }

  return NO;
}
Still the same
解决方案
I checked your sample code and the text field's delegate is not set.

You can set it in your view controller using
_clientField.delegate = self;
Additionally you need to use a slightly different method to get the text which the users sees. Something like this:
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    NSString *currentString = [textField.text stringByReplacingCharactersInRange:range withString:string];
    if ([currentString isEqualToString:@"Fac"]) {
        textField.text = @"Factory";
        return NO;
    }
    return YES;
}
Note that you probably want to fine tune this a bit, since it e.g. also autocompletes when the user deletes text. But this should get you on the right track.

                        
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