textview根据光标插入数据
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
//定位光标
NSRange range = [opinion selectedRange];
NSMutableString *top = [[NSMutableString alloc] initWithString:[opinion text]];
NSString *addName = [NSString stringWithFormat:@"%@、",cell.textLabel.text];
[top insertString:addName atIndex:range.location];
opinion.text = top;
[top release];

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