Whenever I click on a UITextField, my UIView will move up. How can I stop this?
There could be a chance of one of below.
If UIView is inside(contained) by ScrollView, then set the contentSize to have more height CGSize siz=sv.frame.size; siz.height+=300;sv.contentSize=siz; where 300 is keyboard height.
If there is some code to handle keyboard sizing then search for UIKeyboardDidShowNotification and comment the lines with addobserver, removerobserver in them
Related
I have TextView inside a TableView FooterView and that TableView is inside CollectionViewCell.
How to have the TextView move when pressed. Now Keyboard collapses with the textView. It does not scrolls the TableView up by default.
You can use IQKeyboardManager. It will handle all keyboard events.
Take the reference of the bottom constraint of your tableView and then change the constraint constant to keyboard height, then the bottom of your tableView as well as the textView will come just above the keyboard.
I have a tableview with a textview for entering text immediately below it similar to Apple Messages. When the user begins to enter text and the keyboard appears, I want the following behavior similar to IOS Messages.
If the keyboard will not cover anything, the visible part of the tableview remains unchanged.
If the keyboard will cover something, the tableview moves up just enough so that its bottom-most filled cell is just above the keyboard.
Because I'm using autolayout, I currently have a constraint between the tableview and the textview below it. Also, the project has IQKeyboard which manages a lot of other views involving textfields and textviews.
The constraint combined with IQKeyboard accomplishes 2. When the keyboard appears, the keyboard pushes the textview up. The textview pushes the tableview up. So if the tableview is fully populated, you see the last cell of the tableview above the textview above the keyboard as desired.
However, 2. is not working.
if the tableview is not filled, the keyboard pushes up the textview which pushes up the tableview so that you longer see the top of the tableview.
I have tried adjusting the contentOffset property of the tableview when the Keyboard Shows and this sort of works but the tableview initially moves up before coming back down. I think this is because the notification to change the offset property does not fire until after the keyboard has begun to move up.
I also tried adjusting the tableview height to its content but this causes the textview to expand to fill the difference due to constraints.
Content offset approach - problem is that content offset adjusts too late
//register for keyboard notifications and in handler:
if let infoKey = notification.userInfo?[UIKeyboardFrameEndUserInfoKey],
let rawFrame = (infoKey as AnyObject).cgRectValue {
let keyboardFrame = view.convert(rawFrame, from: nil)
self.heightKeyboard = keyboardFrame.size.height
UIView.animate(withDuration: 0.2, animations: {
self.tableView.contentInset = UIEdgeInsetsMake(self.heightKeyboard!, 0, 0, 0);
})
}
Can anyone suggest a way to mimic the behavior of Apple Messages? Thanks in advance for any suggestions.
One approach:
constrain the top of the tableView to the top of the view
constrain the bottom of the tableView to the top of the textField
constrain the bottom of the textField to the bottom of the view
create an #IBOutlet for the textField's bottom constraint
When the keyboard is shown, change the .constant of the textField's bottom constraint to the height of the keyboard view.
This will move the textField up, and because it's top is constrained to the bottom of the tableView, it will also move the tableView's bottom edge up.
Then scroll to the bottom of the tableView.
Layout:
Initial hierarchy, with 20 rows (scrolled to the bottom):
Hierarchy view (tableView background color set to green, so we can see its frame):
View after the keyboard is shown:
Hierarchy after the keyboard is shown:
Little tough to see from static screen caps, but the frame of the green rectangle (the tableView background) is now shorter... the user can still scroll up and down to see all the rows, but the bottom of the tableView is still constrained to the top of the textField.
When you the keyboard is dismissed, set the .constant of the textField's bottom constraint back to Zero.
You can see a full, working example project up on GitHub: https://github.com/DonMag/KBAdjust
We have a UITextView with a keyboard input accessory - the accessory is another UIView with a few buttons and another UITextView that grows in height as needed to display a message. (similar to what you see in iMessage)
Everything works fine up through iOS7 and the input accessory grows upward above the keyboard when we update the frame size. But with iOS8, the accessory view grows downward extending over the predictive text and keyboard.
Is there a new way to tell the iOS8 keyboard view to relayout the accessory views? I've tried calling ReloadInputViews() and it doesn't seem to change anything.
Stuck on this - thanks for the help.
I override the addConstraint method on my view as apple sets a constraint with constant height for iOS8. This seems to solve the issue.
I meet this problem too. What I do is override inputAccessoryView's layoutSubviews method and make the height is a fixed number. like this:
- (void)layoutSubviews {
if (self.height > 38) {
self.height = 38;
}
}
PS:
what strange is when your inputAccessoryView's height is above 50,inputAccessoryView will not grows downward.
My pure AutoLayout UITableViewCell looks like this in Interface Builder:
UITableViewCell
|-> UITableViewCell.contentView
|-> UIView (ScrollViewContainerView)
|-> UIScrollView
|-> left (fixed)
|-> center (fill remaining)
|-> right (fixed)
The UIScrollView contains a left, center, and right UIView. left and right are both fixed width, while center expands to fill the remainder of the UIView. The UIScrollView constraints are to align all edges to ScrollViewContainerView. ScrollViewContainerView constraints are to align all edges to the UITableViewCell.contentView. I have a constraint on center's width to be a multiple of ScrollViewContainerView's width, so the UIScrollView scrolls left and right, but the height is fixed and does not scroll. Note that the UIScrollView has been subclassed to include this code so that the UITableView can detect a tap on the cell to toggle selection.
The issue is that I currently can either scroll the UITableView containing these UITableViewCells up and down or I can scroll the UIScrollViews in the UITableViewCells left and right, not both.
When ScrollViewContainerView.userInteractionEnabled == YES, I can't scroll the UITableView up and down, but I can scroll the UIScrollView left and right. When ScrollViewContainerView.userInteractionEnabled == NO, I can scroll the UITableView up and down, but I can't scroll the UIScrollView left and right. userInteractionEnabled == YES on everything else in the above hierarchy.
I can get away with having ScrollViewContainerView as a sibling view to the UIScrollView (making the UIScrollView the direct descent of contentView -- can't get rid of this view completely, because I require it to get the dimensions for the UIScrollView frame). In that case, the opposite handling with userInteractionEnabled holds.
I know I've done this before in other projects before, but starting fresh again, I can't seem to figure out what step I'm missing. Currently using Xcode 6 6A215l targeting iOS 8, though I have reproduced the issue under Xcode 5 targeting iOS 7.
It sounds like the scrollview is causing your tableview to not allow userInteraction when being scrolled. I'm sure that if you called - (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView in the UIScrollView delegate (not sure for iOS 8), but you could just do
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView {
if(scrollView.dragging == YES) {
self.<scrollViewName>.userInteractionEnabled = NO;
}
}
This is untested code, but it's just a bit of help to get you where you need to go.
Hope it helps!
I met some similar problem.
I have a scrollView in tableViewCell. All works fine.
Until one day, someone told me that the tableView can't scroll up/down when finger is touched on the scrollView in 6p. Just in 6p, not in 5, 5s,or6.
This makes me almost crazy.
Finally, I set the scrollView's height smaller than the height in storyboard.
Biu ~ It works~~~
Still, I don't know why.
#user2277872's answer put me on the right track to look at the output of the UIScrollView delegate methods of the UIScrollView in my UITableViewCell subclass. Putting an NSLog() in scrollViewWillBeginDragging: made me notice that the UIScrollView was receiving scrolling events while I was trying to scroll the UITableView. My UIScrollView had a contentSize larger than its frame in both directions, but I've forced that view to only scroll horizontal, so ignored the height and reset it. That force was my undoing and I should have known it at the time -- the correct solution is to fix the frame height. If the UIScrollView doesn't think there is more vertical content, it will correctly forward the swipe up/down gesture to the UITableView.
While I attempt to figure out why my contentSize is too large when it wasn't before (thinking I'm missing a clipToBounds somewhere), what I'm doing to force horizontal scrolling temporarily is (in the UITableViewCell's subclass):
- (void)drawRect:(CGRect)rect
{
[super drawRect:rect];
CGSize contentSize = self.scrollView.contentSize;
contentSize.height = self.frame.size.height;
self.scrollView.contentSize = contentSize;
}
EDIT: Actually, this is seemingly better than overriding drawRect. This would be in the UIScrollView subclass:
/*
* Lock to horizontal scrolling only.
*/
- (void)setContentSize:(CGSize)contentSize
{
[super setContentSize:CGSizeMake(contentSize.width, 1)];
}
The height struct member isn't too important, as long as it's guaranteed to be smaller than the frame.size.height of the UITableViewCell. Still hacky, still need to find why I could clip before and not now.
I have a fixed size UITextView and if I add more word's, it will scroll to it's content. I'm adding an UIImage as a subview in UITextView. If there are more comment's I cannot scroll UITextView to see the image. Can we set the content height of uitextview to solve this issue?
UITextView is not designed to receive a subview like that, and it won't scroll it correctly. You need to add both as subviews in a UIScrollView, which should auto-behave like so:
Swiping should first scroll the view where the touchDown event began (i.e., your UITextView)
When that view has no more to scroll, the event should bubble up to the UIScrollView itself, bringing up your UIImage.
If you don't like this behavior then you can synchronize scrolling as you prefer by calculating the height of your text inside your UITextView bounds, using:
CGSize size = [myText sizeWithFont:myFont forWidth:myFontWidth.0 lineBreakMode:UILineBreakModeWordWrap];