iOS（编辑内容被键盘遮盖）ScrollView里的包含了TextField&&TextView（用了监听的方法）

现在ScrollView里的TextField编辑弹出键盘，ScrollView上移的特效做好，可是TextView按照TextField的方法却没有效果（下面写出了TextField的方法，急需TextView编辑ScrollView上移到可显示位置的方法！！！）
【TextField】- (void)registerForKeyboardNotifications
{
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWasShown:)
                                                 name:UIKeyboardDidShowNotification object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillBeHidden:)
                                                 name:UIKeyboardWillHideNotification object:nil];
    
}// Called when the UIKeyboardDidShowNotification is sent.
- (void)keyboardWasShown:(NSNotification*)aNotification
{
    NSDictionary* info = [aNotification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
    
    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height + 70, 0.0);
    _myScroolView.contentInset = contentInsets;
    _myScroolView.scrollIndicatorInsets = contentInsets;
    
    // If active text field is hidden by keyboard, scroll it so it's visible
    // Your application might not need or want this behavior.    CGRect aRect = self.view.frame;
    aRect.size.height -= kbSize.height;//    if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) {
//        CGPoint scrollPoint = CGPointMake(0.0, activeField.frame.origin.y-kbSize.height);
//        [_myScroolView setContentOffset:scrollPoint animated:YES];
//    }}// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
    UIEdgeInsets contentInsets = UIEdgeInsetsZero;
    _myScroolView.contentInset = contentInsets;
    _myScroolView.scrollIndicatorInsets = contentInsets;
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    
    return YES;
}
 
【TextView】???????????????????????????????????? 大神指点下~