How to remove added done button from numeric keyboard - iphone

Question

This is my code....
`
- ( void ) registerForKeyboardNotifications {
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWasShown:)
name:UIKeyboardDidShowNotification object:nil];
}
// Called when the UIKeyboardDidShowNotification is sent.
- ( void ) keyboardWasShown:(NSNotification*)notification {
[self addButtonToKeyboard];
}
#pragma -
#pragma Numeric keyboard done button
- ( void ) keyboardDoneClicked:(id)sender {
[txtvannum resignFirstResponder];
[txtmobnum resignFirstResponder];
// [sender resignFirstResponder];
}
- ( void ) addButtonToKeyboard {
// create custom button
// if(keyButton){
doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
doneButton.frame = CGRectMake(0, 163, 106, 53);
doneButton.adjustsImageWhenHighlighted = NO;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.0) {
[doneButton setImage:[UIImage imageNamed:#"DoneUp3.png"] forState:UIControlStateNormal];
[doneButton setImage:[UIImage imageNamed:#"DoneDown3.png"] forState:UIControlStateHighlighted];
} else {
[doneButton setImage:[UIImage imageNamed:#"DoneUp.png"] forState:UIControlStateNormal];
[doneButton setImage:[UIImage imageNamed:#"DoneDown.png"] forState:UIControlStateHighlighted];
}
[doneButton addTarget:self action:#selector(keyboardDoneClicked:) forControlEvents:UIControlEventTouchUpInside];
// locate keyboard view
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
for(int i=0; i<[tempWindow.subviews count]; i++) {
keyboard = [tempWindow.subviews objectAtIndex:i];
// keyboard found, add the button
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2) {
if([[keyboard description] hasPrefix:#"<UIPeripheralHost"] == YES)
[keyboard addSubview:doneButton];
} else {
if([[keyboard description] hasPrefix:#"<UIKeyboard"] == YES)
[keyboard addSubview:doneButton];
}
}
// }
//// else{
//// return;}
}
`
I developed an app which consist of user to enter their details.There are 4 text fields in that.Two among those requires numeric type of keyboard.For that numeric keyboard I added the done button to resign after finished editing.But that done button is coming for all other type of keyboard also.How can add that done button oly to numeric keyboard so that it should hide for all other type.I am struggling in this.Please help.
Thank you.

Answer 1

For each UITextField use the function setReturnKeyType: which can attain values,
typedef enum {
UIReturnKeyDefault,
UIReturnKeyGo,
UIReturnKeyGoogle,
UIReturnKeyJoin,
UIReturnKeyNext,
UIReturnKeyRoute,
UIReturnKeySearch,
UIReturnKeySend,
UIReturnKeyYahoo,
UIReturnKeyDone,
UIReturnKeyEmergencyCall,
} UIReturnKeyType;
And you have to set the key type for each text field separately.For the text field that you don't want the done button just set it as UIReturnKeyDefault.
Hope this helps.

Answer 2

First of all, you have to set a notification to keep tracking keyboard's activity. To identify, which UITextField is being active, you have to set an unique tag to each.
In .h file >>
#interface myViewController : UIViewController
{
UITextField *txtField1; // Allows Numeric input
UITextField *txtField2; // Allows String input
UITextField *txtField3; // Allows Numeric input
UITextField *txtField4; // Allows String input
UITextField *txtFieldTemp; // Temp textfield
BOOL isReturned;
}
In .m file >>
- (void)viewDidLoad
{
txtField1.tag = 0;
txtField2.tag = 1;
txtField3.tag = 2;
txtField4.tag = 3;
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(UIKeyboardWillChangeFrameNotification:) name:UIKeyboardDidShowNotification object:nil];
}
- (void)UIKeyboardWillChangeFrameNotification:(NSNotification *)note
{
if (txtFieldTemp.tag == 0 || txtFieldTemp.tag == 2)
{
[self addButtonToKeyboard];
}
}
-(void) textFieldDidBeginEditing:(UITextField *)textField
{
if (textField.tag == 0 || textField.tag == 2)
{
[self addButtonToKeyboard];
}
else
{
[self removeButtonFromKeyboard];
}
txtFieldTemp = textField;
}
- (void)removeButtonFromKeyboard
{
// Remove Keyboard logic
}