坑爹小问题-table改变frame动画影响cell

 1 - (void)keyboardFrameChange:(NSNotification *)sender
 2 {
 3     NSDictionary *userInfo = sender.userInfo;
 4     CGRect keyboardFrame;
 5     [[userInfo valueForKey:UIKeyboardFrameEndUserInfoKey] getValue: &keyboardFrame];
 6     NSNumber *duration = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];
 7     NSNumber *curve = [userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey];
 8     
 9     //坑爹的frame调整动画
10     [UIView beginAnimations:nil context:nil];
11     [UIView setAnimationDelegate:self];
12     [UIView setAnimationDuration:[duration doubleValue]];
13     if ([duration doubleValue] != 0)
14     {
15         [UIView setAnimationCurve:[curve intValue]];
16     }
17     _tfToolBar.frame = [self changeYForFrame:_tfToolBar.frame withY:keyboardFrame.origin.y-_tfToolBar.frame.size.height];
18     _mainTabel.frame = [self changeHeightForFrame:_mainTabel.frame withHeight:keyboardFrame.origin.y-_tfToolBar.frame.size.height];
19     [UIView commitAnimations];
20     
21     //让表滚到最下面一行
22     if ([_chatArr count])
23     {
24         NSIndexPath *lastPath=[NSIndexPath indexPathForRow:[_chatArr count]-1 inSection:0];
25         [_mainTabel scrollToRowAtIndexPath:lastPath atScrollPosition:UITableViewScrollPositionBottom animated:YES];
26     }
27 }