iphone - 如何在iphone应用程序中自动调用UITextField的textDidChange方法

我在 iphone 应用程序中工作，其中有我想要的文本字段，当任何文本发生更改时，应自动调用以下方法。

   -(void)textFieldTextDidChangeOneCIUITextField*)tf{



NSLog(@"Testing Successful Value %.2f",appDelegate.p_ClinInf_Yes_V_InModel);
appDelegate.p_ClinInf_Yes_NV_InModel  = [[textFieldOne text] floatValue];

appDelegate.p_ClinInf_No_NV_InModel=100-appDelegate.p_ClinInf_Yes_NV_InModel;

textFieldTwo.text=[NSString stringWithFormat"%.2f",appDelegate.p_ClinInf_No_NV_InModel];


NSCharacterSet * set = [[NSCharacterSet characterSetWithCharactersInString"0123456789."] invertedSet];
NSString*string=textFieldOne.text;
if ([string rangeOfCharacterFromSet:set].location != NSNotFound) {
    UIAlertView * alert = [[UIAlertView alloc] initWithTitle"Warning" message"Only a number can be entered into this input field " delegate:nil cancelButtonTitle"OK" otherButtonTitles:nil];
    [alert show];
    [alert release];
    textFieldOne.text=@"";


}

NSLog(@"Testing Successful CI Data  %.2f",appDelegate.p_ClinInf_Yes_NV_InModel);

}

目前我正在调用它

使用

    [textFieldOne addTarget:self actionselector(textFieldTextDidChangeOneCI forControlEvents:UIControlEventEditingChanged];

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Best Answer-推荐答案

试试这个

 - (void)viewDidLoad
{
[super viewDidLoad];

 [[NSNotificationCenter defaultCenter]
 addObserver:self
 selectorselector(textFieldTextDidChangeOneCI
 name:UITextFieldTextDidChangeNotification
 object:textfield];
 }

同时修改你的方法

 -(void)textFieldTextDidChangeOneCINSNotification *)notification
 {
UITextField *textfield=[notification object];
NSLog(@"%@",textfield.text);

 }

关于iphone - 如何在iphone应用程序中自动调用UITextField的textDidChange方法，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16684916/