Question

可以通过UISplitViewController在iPhone上从主控制器返回到详细控制器吗？我尝试使用displayMode将PrimaryHidden更改为showDetailViewController，splitViewController?.viewControllers[0]使用def set_conversation @user = User.find(params[:id]) if @user? if Task.between(current_user.id, @user.id).present? #### QUESTION: What will happen if there's no Conversation betwwen the current user #### and the user? What is the returning value of this method? Should you #### redirect it again to user_profile path? if Conversation.between(current_user.id, @user.id).present? @conversation = Conversation.between(current_user.id, @user.id).first @reciever = interlocutor(@conversation) @messages = @conversation.messages @message = Message.new @uploader = @message.mfile @uploader.success_action_redirect = messagefilecreation_conversation_url(@conversation.id) end else redirect_to user_profile_path(@user) end end，但没有任何内容能够显示细节控制器。

我希望两个控制器都没有解除和重新加载，因为一个包含地图和第二个地图对象的首选项。

Answer 1

假设您在主视图中有一个按钮，按下该按钮将带您进入详细视图。这是一个如何实现的例子

@IBAction func buttonToGoToDetailView(sender: UIButton) {
     performSegueWithIdentifier("segue id in storyboard", sender: nil)
}
// prpare for segua to detail view
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
     let destination = segue.destinationViewController as? UIViewController
     if let dvc = destination as? NameOfTheDetailViewController{
            if segue.identifier = "segue id in storyboard" {
                //use dvc to pass data to the detail if there is any    
            }
     }
}

UISplitViewController从master返回到detail

1 个答案: