NSNotification 通知

[[NSNotificationCenter defaultCenter]postNotificationName:@"people" object:[self.listdata objectAtIndex:indexPath.row]]//给要传的值写个名字如：@“people”

接收：    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(showvalue1:) name:@"people" object:nil];//需要一个showvalue1:方法得到具体的值：
             -(void) showvalue1:(NSNotification *)notification
{
    NSString *text=notification.object;
    m_labelpeople.text=text;//编辑lable
    
}


注：不要将[self.navigationController pushViewController: animated:true]和[[NSNotificationCenter defaultCenter]postNotificationName:@"people" object:[self.listdata objectAtIndex:indexPath.row]]//这两个动作写在同一个函数中的，最后只有随机一个动作其作用。