Move a view up so textfield does not disappear behind keyboard - iphone

Question

I have a view like you can see over here.
You can see that I have an header image with below a lot of textfields. Only the UITextfields Adres - Postcode - Gemeente - Tel.nr - Email - BTWnr. are disappearing behind the keyboard.
I have some code, that is working for the UITextfield of Adres. But when I want to implement more it always takes the animation for the UITextfield of Adres.
Here is what I have in code
#define kOFFSET_FOR_KEYBOARD 80.0
#define kOFFSET_FOR_KEYBOARD2 120.0
-(void)keyboardWillShow {
NSLog(#"Keyboard frame now is %f",self.keyboardView.frame.origin.y);
// Animate the current view out of the way
if (self.keyboardView.frame.origin.y >= 198)
{
NSLog(#"keyboardWillShow 1");
[self setViewMovedUp2:NO];
}
else if (self.keyboardView.frame.origin.y < 198)
{
NSLog(#"keyboardWillShow 2");
[self setViewMovedUp:YES];
}
}
-(void)keyboardWillHide {
NSLog(#"Keyboard frame ATM %f",self.keyboardView.frame.origin.y);
if (self.keyboardView.frame.origin.y >= 198)
{
NSLog(#"keyboardWillHide 1");
[self setViewMovedUp:YES];
}
else if (self.keyboardView.frame.origin.y < 198)
{
NSLog(#"keyboardWillHide 2");
[self setViewMovedUp:NO];
}
}
-(void)textFieldDidBeginEditing:(UITextField *)sender
{
if ([sender isEqual:txtAdres])
{
NSLog(#"sender is adres");
//move the main view, so that the keyboard does not hide it.
if (self.keyboardView.frame.origin.y >= 198)
{
[self setViewMovedUp:YES];
}
}
if ([sender isEqual:txtPostcode])
{
NSLog(#"sender is postcode");
//move the main view, so that the keyboard does not hide it.
if (self.keyboardView.frame.origin.y >= 198)
{
[self setViewMovedUp2:YES];
}
}
}
//method to move the view up/down whenever the keyboard is shown/dismissed
-(void)setViewMovedUp:(BOOL)movedUp
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3]; // if you want to slide up the view
CGRect rect = self.keyboardView.frame;
if (movedUp)
{
// 1. move the view's origin up so that the text field that will be hidden come above the keyboard
// 2. increase the size of the view so that the area behind the keyboard is covered up.
rect.origin.y -= kOFFSET_FOR_KEYBOARD;
rect.size.height += kOFFSET_FOR_KEYBOARD;
}
else
{
// revert back to the normal state.
rect.origin.y += kOFFSET_FOR_KEYBOARD;
rect.size.height -= kOFFSET_FOR_KEYBOARD;
}
self.keyboardView.frame = rect;
[UIView commitAnimations];
}
-(void)setViewMovedUp2:(BOOL)movedUp
{
NSLog(#"setViewMovedUp2 called");
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3]; // if you want to slide up the view
CGRect rect = self.keyboardView.frame;
if (movedUp)
{
// 1. move the view's origin up so that the text field that will be hidden come above the keyboard
// 2. increase the size of the view so that the area behind the keyboard is covered up.
rect.origin.y -= kOFFSET_FOR_KEYBOARD2;
rect.size.height += kOFFSET_FOR_KEYBOARD2;
}
else
{
// revert back to the normal state.
rect.origin.y += kOFFSET_FOR_KEYBOARD2;
rect.size.height -= kOFFSET_FOR_KEYBOARD2;
}
self.keyboardView.frame = rect;
[UIView commitAnimations];
}
And in my ViewWillAppear I do this
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow)
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillHide)
name:UIKeyboardWillHideNotification
object:nil];
Can anybody help me with this ?

Answer 1

Please try to use this one ...I hope it may help you. And you can put your value on 200 in this line where you wanna your textfield.
CGFloat avaliableHeight = applicationFrame.size.height - 200;
- (void)scrollViewToCenterOfScreen:(UIView *)theView
{
CGFloat viewCenterY = theView.center.y;
CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame];
CGFloat avaliableHeight = applicationFrame.size.height - 200;
CGFloat y = viewCenterY - avaliableHeight / 2.0f;
if (y < 0)
{
y = 0;
}
[scrollView setContentOffset:CGPointMake(0, y) animated:YES];
}
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
[self scrollViewToCenterOfScreen:textField];
return YES;
}

Answer 2

i would suggest , use a dropin replacement library TPKeyboardAvoiding which handles all the work for moving the views, when Keyboard is shown, Its a Very easy way of achieving that

Answer 3

I actually came across this problem yesterday. Here's my code:
#define kOFFSET_FOR_KEYBOARD 80.0
//This decides how many pixels to move the view
-(void)keyboardWillShow
{
// Animate the current view out of the way
if (self.view.frame.origin.y >= 0)
{
[self setViewMovedUp:YES];
}
else if (self.view.frame.origin.y < 0)
{
[self setViewMovedUp:NO];
}
}
-(void)keyboardWillHide
{
if (self.view.frame.origin.y >= 0)
{
[self setViewMovedUp:YES];
}
else if (self.view.frame.origin.y < 0)
{
[self setViewMovedUp:NO];
}
}
-(void)textFieldDidBeginEditing:(UITextField *)sender
{
if ([sender isEqual:doNotCover])
{
//move the main view, so that the keyboard does not hide it.
if (self.view.frame.origin.y >= 0)
{
[self setViewMovedUp:YES];
}
}
}
//method to move the view up/down whenever the keyboard is shown/dismissed
-(void)setViewMovedUp:(BOOL)movedUp
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3]; // if you want to slide up the view
CGRect rect = self.view.frame;
if (movedUp)
{
// 1. move the view's origin up so that the text field that will be hidden come above the keyboard
// 2. increase the size of the view so that the area behind the keyboard is covered up.
rect.origin.y -= kOFFSET_FOR_KEYBOARD;
rect.size.height += kOFFSET_FOR_KEYBOARD;
}
else
{
// revert back to the normal state.
rect.origin.y += kOFFSET_FOR_KEYBOARD;
rect.size.height -= kOFFSET_FOR_KEYBOARD;
}
self.view.frame = rect;
[UIView commitAnimations];
}
-(void)setViewMovedUp:(BOOL)movedUp
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3]; // if you want to slide up the view
CGRect rect = self.view.frame;
if (movedUp)
{
// 1. move the view's origin up so that the text field that will be hidden come above the keyboard
// 2. increase the size of the view so that the area behind the keyboard is covered up.
rect.origin.y -= kOFFSET_FOR_KEYBOARD;
rect.size.height += kOFFSET_FOR_KEYBOARD;
}
else
{
// revert back to the normal state.
rect.origin.y += kOFFSET_FOR_KEYBOARD;
rect.size.height -= kOFFSET_FOR_KEYBOARD;
}
}
self.view.frame = rect;
[UIView commitAnimations];
- (void)viewWillAppear:(BOOL)animated
{
// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillShow)
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(keyboardWillHide)
name:UIKeyboardWillHideNotification
object:nil];
}
- (void)viewWillDisappear:(BOOL)animated
{
// unregister for keyboard notifications while not visible.
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillShowNotification
object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self
name:UIKeyboardWillHideNotification
object:nil];
}