I have a UITextView included in a UITableViewCell . The layout is correct when the views are initially displayed, but once I click in the UITextView it automatically scrolls up a bit and the top half of the characters on the first line becomes invisible.
This image is when the UITextView is not active:
And this one is when I clicked in the UITextView to make it active:
I do not the UITextView to scroll up at all, it should simple stay fixed. How can I achieve this? I already tried several settings in Interface Builder , but no luck so far.
Any suggestions are appreciated.
Gero
Source: Tips4all, CCNA FINAL EXAM
This is how UITextView behaves according to Apple's engineer this is intended and UITextView is meant for text that are at least a few lines in height. There is no work around to this, use a UITextField instead or increase your UITextView to at least 3 lines in height.
ReplyDeleteUITextView is a subclass of UIScrollView, so it has a configurable contentInset property. Unfortunately, if you try to change contentInset on a UITextView instance, the bottom edge inset always gets reset to 32. I've run into this before with short UITextView frames and found this to be an issue. I suspect this is what is causing your problem, but you should check the contentInset of your textview in the debugger to be sure.
ReplyDeleteThe workaround/solution is simple: subclass UITextView and override the contentInset method so that it always returns UIEdgeInsetZero. Try this:
//
// BCTextView
//
// UITextView seems to automatically be resetting the contentInset
// bottom margin to 32.0f, causing strange scroll behavior in our small
// textView. Maybe there is a setting for this, but it seems like odd behavior.
// override contentInset to always be zero.
//
@interface BCZeroEdgeTextView : UITextView
@end
@implementation BCZeroEdgeTextView
- (UIEdgeInsets) contentInset { return UIEdgeInsetsZero; }
@end
You can also just do:
ReplyDeletetextView.contentInset=UIEdgeInsetsZero;
in your delegate file.
I was experiencing a similar issue with undesired UITextView scrolling. I finally managed to fix it by resetting the contentSize at the end of my keyboardDidShow:
ReplyDelete- (void)keyboardDidShow:(NSNotification *)notification {
textView.contentSize = CGSizeZero;
}
You also will need to register for the keyboard notification, like so:
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
In my case I didn't want any scrolling since I was resetting the frame to the height of the textView's contentSize when textViewDidChange (growing textview inside a UIScrollView).