I have a UITextView
whose height I am trying to resize as the number of lines increases. Apart form this, I need to resize the UIView
in which the UITextView
is contained. I am using the following code for this:
-(void) textViewDidChange:(UITextView *)textView{
CGFloat before = textView.frame.size.height; CGRect frame = textView.frame; frame.size = textView.contentSize; CGFloat after = frame.size.height, diff = after - before, final = 0; if (diff>16) { final = 8; }else if(diff<-1){ final = -16; }else{ final = 0; } [self.containerView setFrame: CGRectMake(self.containerView.frame.origin.x,
self.containerView.frame.origin.y-final, self.containerView.frame.size.width, frame.size.height+13)];
[textView setFrame: frame];
}
I am also trying to change the Y-position of the container as the text is changed. I am using static number values according to font size to avoid complications.
But the problem is that whenever the UITextView
enters a new line, it resizes its contentSize
to the original size and so the frame of the UITextView
is also reduced for a moment, which looks really ugly. Also, the Y-position depends on this contentSize
change and it gets all messed up when this automatic resize happens.
I am looking for the same behaviour which apps like whatsapp or viber have. Any idea how I can achieve this?
If I understand correctly, the containerView includes a textfield and must be drawn around it, regardless of the size of the textfield? If that is, try something like this
-(void) textViewDidChange:(UITextView *)textView
{
CGRect frame = textView.frame;
frame.size = textView.contentSize;
//do your magic calculations
[textView setFrame: frame];
[self.containerView setFrame: CGRectMake(self.containerView.frame.origin.x,
self.containerView.frame.origin.y-final, self.containerView.frame.size.width, frame.size.origin.y +frame.size.height+13)];
}
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