CODEWITHSUNDEEP
iosuiscrollviewuitextfield
sudheer
sudheer

Reputation: 428

textfield disappearing when keyboard present for scrollview

i have a problem with keyboard appearing in UiscrollView.

i added a UIScrollview as

scrlView=[[UIScrollView alloc] initWithFrame:CGRectMake(10, 140, 1000, 600)];
scrlView.scrollEnabled=YES;
scrlView.showsVerticalScrollIndicator=YES;
scrlView.bounces=NO;

to this scrollView i have added 10 rows of UITextFields each row has 5 textFields each textfield height is 50px. When ever trying to edit textfield it is overlapping by keyBoard.For that i tried this code

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWasShown:)
                                             name:UIKeyboardDidShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardWillBeHidden:)
                                             name:UIKeyboardWillHideNotification object:nil];


   - (void)keyboardWasShown:(NSNotification*)aNotification
  {
NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
CGRect bkgndRect = selectetTxtfld.superview.frame;
bkgndRect.size.height += kbSize.height;
[selectetTxtfld.superview setFrame:bkgndRect];
[scrlView setContentOffset:CGPointMake(0.0, selectetTxtfld.frame.origin.y) animated:YES];
}

}

// Called when the UIKeyboardWillHideNotification is sent

 - (void)keyboardWillBeHidden:(NSNotification*)aNotification
  {
  UIEdgeInsets contentInsets = UIEdgeInsetsZero;

  [UIView animateWithDuration:0.4 animations:^{
     scrlView.contentInset = contentInsets;
  }];
  scrlView.scrollIndicatorInsets = contentInsets;
 }

But the textField not appearing on the keyboard.it appearing at the scrollview ypoint position

help me on this problem.I saw many answers in StackOverFlow.But not cleared my problem

Upvotes: 0

Views: 290

Answers (2)

dRAGONAIR
dRAGONAIR

Reputation: 1191

- (void)keyboardWillBeHidden:(NSNotification*)aNotification {

NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
CGFloat offSetAfterKeyboardIsDisplayed = scrlview.contentOffset.y + kbSize.height;

[UIView animateWithDuration:0.3 animations:^{
//adding content inset at the bottom of the scrollview
   scrlView.contentInset = UIEdgeInsetMake(0,0,kbSize.height,0);
   [scrlview setContentOffset:offSetAfterKeyboardIsDisplayed]
}];
}


- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{

NSDictionary* info = [aNotification userInfo];
CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
CGFloat offSetAfterKeyboardResigns = scrlview.contentOffset.y - kbSize.height;

[UIView animateWithDuration:0.3 animations:^{
   scrlView.contentInset = UIEdgeInsetsZero;
   [scrlview setContentOffset:offSetAfterKeyboardResigns]
}];
}

Upvotes: 1

dRAGONAIR
dRAGONAIR

Reputation: 1191

in keyboardWasShown: 1.add content inset at bottom of the scrollview with value equal to the height of the keyboard. 2. setContentOffset = current offset+ height of the keyboard. Note: 1&3 should be done in an animation block with duration equalto 0.30

in keyboardWillBeHidden: 1.set contentInset = UIEdgeInsetsZero 2. setContentOffset = current offset - height of the keyboard. Note: 1&3 should be done in an animation block with duration equalto 0.30

This should solve ur problem :)

Upvotes: 1

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