ios - 以编程方式在 UITextView 中选择文本，在具有多个文本容器的布局管理器中

Question

如果布局管理器中只有一个 TextContainer，则操作系统将处理用户交互。但是有了多个文本容器，我在某处读到它不是开箱即用的。

这里有一些我已经用过但没有运气的东西。

NSRange range = NSMakeRange(5, 10);

UITextPosition *from = [textView positionFromPosition:[textView beginningOfDocument] offset:range.location];
UITextPosition *to = [textView positionFromPosition:from offset:range.length];
[textView select:self];
[textView setSelectedTextRange:[textView textRangeFromPosition:from toPosition:to]];

和

NSRange range = NSMakeRange(5, 10);
textView.selectedRange = range;

如果只有一个 TextContainer，我可以让它工作，但我希望它有多个容器。

这就是我想以编程方式实现的目标

更新：添加了我正在处理的代码

- (void)didDoubleTap:(id)sender {
    UITapGestureRecognizer *tapGesture = (UITapGestureRecognizer *)sender;
            if (tapGesture.state == UIGestureRecognizerStateEnded) {
                CGPoint point = [tapGesture locationInView:self];
                for (UITextView *textView in self.textViews) {
                    if (CGRectContainsPoint(textView.frame, point)) {
                        textView.selectable = YES;
                        [textView becomeFirstResponder];
                        NSInteger glypIndex = [self.articleLayoutManager glyphIndexForPoint:point inTextContainer:textView.textContainer];
                        NSLog(@"GlyphIndex : %ld",glypIndex);
                        NSRange wordRange = [self rangeForWordWithGlyphAtIndex:glypIndex];
                        wordRange.length += 5;//For testing purpose
                        NSLog(@"Got Range");
                        UITextPosition *beginning = textView.beginningOfDocument;
                        UITextPosition *start = [textView positionFromPosition:beginning offset:wordRange.location];
                        UITextPosition *end = [textView positionFromPosition:start offset:wordRange.length];
                        UITextRange *textRange = [textView textRangeFromPosition:start toPosition:end];

                        textView.selectedTextRange = textRange;
                        textView.selectedRange = wordRange;
                        UITextRange *textRange1 = [textView selectedTextRange];
                        CGRect wordRect = [self.articleLayoutManager boundingRectForGlyphRange:wordRange inTextContainer:textView.textContainer];
                        NSLog(@"Got Word Rect");
                        UIMenuController *theMenu = [UIMenuController sharedMenuController];
                        [theMenu setTargetRect:wordRect inView:textView];
                        [theMenu setMenuVisible:YES animated:YES];
                    }
                }
            }
}

谢谢。