레이블을 오른쪽 정렬로 조정하여 중앙 정렬 텍스트보기에 타임 스탬프를 추가하고 싶습니다.

Textkit- exclusionPaths의 도움으로 이것을 수행 할 수 있습니다.

    CGSize sizelbl = _lbl_Timestamp.frame.size;
[_lbl_Timestamp
 setFrame:CGRectMake(CGRectGetMaxX(_txtView.frame) - sizelbl.width - 5,
                     CGRectGetMaxY(_txtView.frame) - sizelbl.height - 5 - 3,
                     sizelbl.width, sizelbl.height)];


CGRect ovalFrame = [_txtView convertRect:_lbl_Timestamp.bounds fromView:_lbl_Timestamp];

// Since text container does not know about the inset, we must shift the frame to container coordinates
ovalFrame.origin.x -= _txtView.textContainerInset.left;
ovalFrame.origin.y -= _txtView.textContainerInset.top;

// Simply set the exclusion path
UIBezierPath *ovalPath = [UIBezierPath bezierPathWithOvalInRect: ovalFrame];
_txtView.textContainer.exclusionPaths = @[ovalPath];