Changing UITextView frame - iphone

Question

I have ViewController with UITextField(top view) and UITextView(bottom view). I want move UITextView to the top of the view, when user start editing it.
When user start editing from UITextView everything is fine, but when user first want to edit UITextField and then UITextView (without hidding keyboard) its not working. UITextField is hidden, but UITextView don't change his frame.
I tried to use UIKeyboardDidShowNotification but its called only when keyboard pops up.
Code to reproduce problem:
ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController <UITextViewDelegate>
#property (weak, nonatomic) IBOutlet UITextField *titleTF;
#property (weak, nonatomic) IBOutlet UITextView *bodyTV;
#end
ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
-(void)textViewDidBeginEditing:(UITextView *)textView {
self.titleTF.hidden=YES;
CGRect newFrame=CGRectMake(20, 20, textView.frame.size.width, 100);
textView.frame=newFrame;
}
#end
Run app and click on UITextView, app will look like:
http://imageshack.us/photo/my-images/694/32568213.png
For now everything is fine (UITextField is hidden and UITextView is moved and resized).
Start app again. First click on UITextField and then click on UITextView. App look like this:
http://imageshack.us/photo/my-images/843/66433184.png
UITextField is hidden, but UITextView did not change his frame.

Answer 1

Move the view up, when the TextView editing begins,
Move it down when editing ends.
Just put these two methods,
-(void) textViewDidBeginEditing:(UITextView *)textView{
CGRect frame = self.view.frame;
frame.origin.y = -(textView.frame.origin.y + textView.frame.size.height);
[UIView animateWithDuration:0.3f animations:^{
self.view.frame = frame;
}];
}
-(void) textViewDidEndEditing:(UITextView *)textView{
CGRect frame = self.view.frame;
frame.origin.y = 0;
[UIView animateWithDuration:0.3f animations:^{
self.view.frame = frame;
}];
}